TW200934897A - Conjugate fiber having low-temperature processability, nonwoven fabric and formed article using the conjugate fiber - Google Patents

Abstract

A conjugate fiber having low-temperature processability, and the shrink is restrained, and having excellent thermal adhesive, and the processability of the card-passing ability is excellent when processing the fiber to a nonwoven fabric, and the nonwoven fabric having excellent texture can be obtained fluffy. And this invention provides a nonwoven fabric and a formed article having excellent low-temperature processability, fluffiness and texture. A conjugate fiber is formed as a side-by-side type cross section by a first component including at least 75 wt% of an ethylene. α -olefin of melting point of 70 to 100 DEG C, and a second component including crystalline poly propylene, characterized in that: in the cross section of fiber perpendicular to a axis of fiber, the 55 to 90% of outer circumference of fiber is occupied by the first component, a borderline of the first and second component is a curve projecting toward the first component, and an area ratio of first and second component (first component/second component) is at a range of 70/30 to 30/70. A nonwoven fabric is obtained by nonwoven fabric forming process using the conjugate fiber. A formed article is obtained by using the conjugate fiber.

Description

200934897

[Technical Field of the Invention] The present invention relates to a composite fiber which has low-temperature workability at the time of hot working and which suppresses shrinkage and has good thermal adhesion. Further, the present invention relates to a nonwoven fabric and a molded body which are excellent in bulkiness and texture using the conjugate fiber. [Prior Art] Since the prior art, various types of composite fibers having low-temperature workability have been proposed, and ethylene-hipon hydrocarbon copolymers which are easy to adjust the glare have been used as components constituting the composite fibers. For example, a sheath core type fiber is used, which is a "mixture" of a polyethylene-based resin having a low melting point of 90 to 125 Å and a high (four) polyethylene-based surface as a component of a composite component (for example, 彖Zhaoli literature i). = 'There is a latent crimping conjugate fiber which is used as a conjugate of the component containing the ethylene-α-copolymer and the component containing the polyester resin, respectively (for example, refer to Patent Document 2). . . . , 丨 , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , For example, the composite m proposed in Patent Document 1 uses a polyethylene tree having a low melting point of 90 to 125 ° C: substantially 30 Å / 〇 or more for weight stability (weight 5 = "Mixed" in the range of ratio) has 120 to 135. (10) The high melting point: the resin is used to feed the composite fiber-based component, so that it is less than 21% and does not sufficiently satisfy the requirements. Further, Patent Document 2 is closed; the use of a composite fiber comprising an ethylene·olefin copolymer as a component in the heat 4 200934897 is likely to shrink during the shrinkage of the composite fiber in the crimped composite fiber is not suitable for obtaining & Value this kind of potential non-woven fabric. The texture of the hook suppression is good. In addition, the difference in shrinkage between the various components of the potential crimping crucible is likely to cause peeling after the composition is used. When the processing is non-woven, the heat-treating component is not (4). The other component, New Zealand, is close to the adhesion of the fiber formed by the adhesive component to the tt. Therefore, it is expected that the strength of the Weidun cloth will not be as high as B, so that it is low, Wei ^ :: good for low temperature processing or non-woven _ or strong; == [[=:; public 00/36200 No. Japanese Patent Application No. 2 No. 1 No. 1 The purpose of the present invention is to provide a kind of reworkability, and the shrinkage is suppressed, and the appearance is low, and the processing is low, especially when it is not woven. The heat-adhesive property, and in the case where the addition property is excellent, and the hair can be obtained and processed, the carding pass is also to provide a good non-woven fabric. The woven fabric of the present invention and the frequency of formation. The result of intensive research, and (4) good non-performed people who have made in-depth research have found that by constructing a specific 5 200934897

f ^pn.uuC The composite fiber of the parallel cross-section can achieve the above-mentioned problem. In the composite fiber, a component which is advantageous for the low-temperature workability of the conjugate fiber, that is, a component which is mainly softened during heat treatment and has a lower melting point after melting is formed to have a ratio of greater than or equal to A component of a specific amount of the specific ethylene-olefin copolymer is used as a component, and a component containing a crystalline polypropylene is used as a second component. ❹ ❹ Therefore, the present invention is a composite fiber which is composed of a melting point containing at least 75 wt/min. The first component of the ethylene/α-olefin copolymer of c and the second component containing the crystalline polypropylene are formed into a side-by-side cross section, and the conjugate fiber is characterized in that it is a fiber cross section of a fiber-shaped right angle. In the middle, the first component accounts for 55 to 90% of the outer circumference of the fiber, and the boundary line of the second component is curved toward the first component side to be convex == the area ratio of the first component to the second component (the first component / the younger component) It is in the range of 70/30 to 30/70. In the embodiment of the present invention, the amount of the ethylene olefin copolymer used in the invention can be exemplified by a sub-quantity distribution (interruption) ^. g/cm3, and based on ASTM D]: 5 in the degree of ?.87 #^ίγΑ?ι ο χταα and /V degree is 190 C, MI) ^ 35 ^ M) is 10~35g/1〇min of the woman · 心 归 上述 上述 上述 上述 上述 上述 上述 上述 上述 上述 上述 上述 上述 上述 上述 上述 上述 上述 上述 上述 上述 上述 上述 上述 上述 上述 上述 上述 上述 上述 上述 上述 上述 上述 上述 上述 上述 上述 上述 上述 上述 上述 上述 上述 上述 上述 上述 上述 上述The composite fiber is sterilized to produce a non-woven fabric obtained by a composite fiber which is not invented, or a pair of bodies.浥仃Processing, and forming the forming 6 200934897 π magnetic; 本 本 本 2009 2009 2009 2009 2009 2009 2009 2009 2009 2009 2009 2009 2009 2009 2009 2009 2009 2009 2009 2009 2009 2009 2009 2009 2009 2009 2009 2009 2009 2009 2009 2009 2009 2009 2009 2009 2009 2009 2009 2009 2009 2009 2009 2009 2009 2009 The obtained shaped body. 5. The example of the non-woven treatment of the fifth method is a reduction bonding method or a hot water adhesion [effect of the invention] ~1 〇〇 γ ΓΛ ΓΛ composite fiber is an ethylene containing at least 75 wt% of a melting point of 70 100 C· The component of the α•dilute hydrocarbon copolymer is a first component and has a cross section such as ===: a fiber cross section at right angles to the fiber axis, and 55 to 9 G% of the outer circumference of the first w fiber, the i component component The boundary line of the boundary line is curved to the i-th component side, and the area ratio of the first component to the second component (the first component/the second component) is a range of '0^30, 〜30/70. . Since the virginity of the ethylene-containing dilute hydrocarbon copolymer mainly covers the surface of the fiber, the thermal adhesiveness with good heat=degree under the loot: or loot: has a good low; the blister contains a crystalline poly The second component of propylene is exposed to the surface of the surface of the surface of the surface of the surface of the surface of the surface of the surface of the surface of the surface of the surface of the surface of the surface of the surface of the surface of the surface of the surface of the surface of the surface of the surface of the surface of the surface. 'In particular, the carding process makes the fiber passability in the W cotton step good. In the shape of the general two-component side-by-side type, the shape is =. The conjugate fiber of the present invention is constituted by a side-by-side type, that is, a mixture comprising ethylene.α, a hydrocarbon copolymerized yttrium having a circumferential length of 55 〜·, the 丨 component and the seventh 200934897

The J\JjL /^pii.uuC boundary is a curve in which the first component side is curved to be convex, and the area ratio (the first component/second component) of the first component and the second component is 7〇= 〜30/70. The range 'is therefore difficult to remove the components, especially when the carding process is performed, the fiber passability in the carding step or the non-woven strength after the non-woven fabric is not hindered, and the workability is improved. Further, in the cross-sectional shape of the two-component side-by-side type in which the half-moon shape is combined, there is a tendency that shrinkage due to the wire drawing process is easy, but it is generally considered that the composite fiber of the present invention is converted by ethylene. α__ The copolymer is used as the first component, and the cross-sectional shape of the special (four) fiber is used to effectively suppress shrinkage. The non-woven fabric obtained by using the conjugate fiber of the present invention is bulky and soft, and has little shrinkage during the teaching. Therefore, there is almost no shrinkage (a reduction in the width of the machined surface with respect to the woven fabric), and productivity is good. Further, the composite fiber of the present invention has a Wei-containing point of 7 G to chest. Ethylene of C. Heart-thin smoke The age of the copolymer is as effective as it can be used (10). Take the lake. Heat treatment below C. Therefore, when the conjugate fiber of the present invention is not woven or processed, a medium such as steam or hot water can be used, so that the woven fabric can be selected according to the use, the environment, and the condition. Forming processing conditions. The above described features and advantages of the present invention will become more apparent and understood. [Embodiment] Eight you f = a fiber is a 1 ', , and a knife containing a polyethylene-α, a hydrocarbon copolymer. The ethylene·α-olefin copolymer is a compound derived from a mother or an alpha-dilute hydrocarbon, and the frequency thereof is as follows: 8 200934897 Propylene, butene q, pentene, hexene d, and heart olefin. Among these (four) hydrocarbons, it is preferred that η 辛; ^ and other linear (four) is him. The ethylene reading η is exclusively for 30 mol% (% of moles), and more preferably: the hydrocarbon content of the 二α 1 is usually 1 mol% or more. At this time, the 疋 疋 曰 ( ((α-women hydrocarbon) / ( α _ female hydrocarbon + ethylene) 3 ❹ ο = two more than two, it exists in the fiber manufacturing Jing curing ί slow: 5 fiber and so on The tendency to impair productivity. If ^ 夂 30 « inside, the rigidity of the fiber is sufficient. 2] When the fiber is in the carding step, the fiber passability is good. Especially the ethylene·α-dilute hydrocarbon used in the carding process. The melting point of the copolymer is preferably 80 to 150. The melting point of the copolymer is used to prevent the fiber material, such as an antistatic agent applied to the fiber surface. When the treatment agent is dry, it does not (four) swell between the fibers ^

,Happening. And play a good productivity. In addition, the melting point is just. C c X can be used to process the fiber into a non-woven fabric or a molded body. The processing temperature is set to A loot: or below the Chuo Dynasty. Steam or hot water can be used as a medium for heat treatment, and processing with a medium having a relatively low temperature can be selected. method. Further, it is not necessary to worry about the influence of other components constituting the fibers which are not originally melted. The melting point referred to herein is the melting peak temperature of ethylene and α•olefin copolymers measured by differential scanning calorimetry (DSC). When a plurality of melting peaks are confirmed, the temperature of the maximum melting peak is taken as the melting point, and when a plurality of melting peaks having similar sizes are confirmed, 200934897

When the JUZ/3pil.UOC value is used, the peak temperature of the lower side is used as the refining point. The ratio of the weight average molecular weight (Mw) of the t-ene copolymer to the number of knives (Mn), that is, the molecular weight distribution (Mw/Mn) is preferably 曰 = h5 to 2.5', more preferably L7 to 2.3. When the molecular weight distribution (Mw/Mn) is in the range of i. 5 to 2.5, it is preferable to obtain a composite fiber which is excellent in the spinning enthalpy in the fiber production step and has sufficient strength in terms of fiber physical properties. The density of the φ 3 ethylene.α-olefin copolymer is preferably 0.87 to 0.91 g/cm 3 ', particularly preferably 0.88 to 0.90 g/cm 3 . When the density of the ethylene·α·dilute hydrocarbon copolymer is 大于·87 g/cm 3 or more, the surface viscosity of the copolymer when processed into a fiber is moderate, and the fiber is less likely to cause sticking during the production of the fiber, and is suitable for use as a main body of the fiber. Composition. On the other hand, if the density is 0.91 g/cm3 or less, the melting point of the ethylene.α_dilute hydrocarbon copolymer is relatively low, being 10 ° C or less, suitable for use as the ethylene used in the present invention. __ dilute smoke copolymer. The melt index (ΜΙ) of the ethylene 〇 〇 〇 〇 hydrocarbon copolymer is preferably from 10 to 35 g/l 〇 min, more preferably from 15 to 30 g/, in view of stable production in the fiber production step. 10 min range. Here, mi is a value measured based on ASTMD-1238 at 190 ° C and a load of 21.2 N. The ethylene·α-olefin copolymer to be used may be either a single one or a mixture of two or more kinds. In the ethylene·α-olefin copolymer used in the present invention, various additives can be formulated within a range not detracting from the object of the present invention. For example, Lubricant, 200934897

Juz, /^pu.uuC Heat stabilizers, antioxidants, weather stabilizers, antistatic agents, colorants, etc. It can be preferably used as a lubricant, such as fatty acid decylamine such as oleic acid amide or phthalic acid amide, fatty acid vinegar such as butyl vinegar, butyl phthalate or polyacrylonitrile, and stearic acid. About waiting for metal and so on. Very good use of oleic acid. _, erucic acid _, stearic acid _, behenylamine and other fatty acid amines. In order to participate in thermal bonding at a low temperature, in particular, steam or hot water may be used for the heat medium during the non-woven or forming process, the first component of the composite fiber of the present invention must contain an effective amount of the above ethylene·α_ Olefin copolymer. The content of the ethylene/olefin copolymer is 75% or more, preferably 85% or more, based on the weight of the first component, and particularly preferably 1% of the resin raw material. . When the ethylene/α-olefin copolymer is 75 wt% or more in the first component, it is preferable to mainly exhibit the performance of the ethylene.α-olefin copolymer. In the case where the ethylene-olefin copolymer contains 75% or more by weight based on the weight of the first component, the resin raw material which can be contained in the first component other than the ethylene/α-olefin copolymer oxime can be, for example, For example: low density polyethylene, high density polyethylene, ethylene-vinyl acetate copolymer, propylene copolymer, and the like. These resin raw materials can be mixed by the following method: a method of uniformly mixing in advance in a state of a resin; or when a polyethylene-α-olefin copolymer is melted and extruded in a fiber production step, in the middle of a self-producing machine The method of inputting the feed port. The conjugate fiber of the present invention contains a component containing crystalline polypropylene as the second component. The crystalline polypropylene is a propylene homopolymer or propylene 200934897

a copolymer of JUZ/^pn.UUC with a small amount (usually 2% by weight or less) of an α-olefin, such a Ziegler-Natta catalyst or a pentad metal catalyst. General purpose polypropylene obtained from metallocene catalyst. The crystalline polypropylene in the present invention is preferably a melting point of 150 to 165 ° C, preferably 155 to 165 ° C, and a melt mass flow rate (melt mass-flow rate ' ]\«^ = 230. (:, 21.2 N) is in the range of 〇.1 〜 ❹ 8 (^/1 〇 111 丨 11 , and more preferably in the range of 3 〇 4 〇 1 〇 111 丨 11 . The second component of the fiber contains crystalline polypropylene, and a mixture of propylene.3_olefin copolymer or melt mass flow rate (MFR) or molecular weight distribution (Mw/Mn) can be suitably used within a range in which the effect is not significantly impaired. a mixture of crystalline polypropylenes having different physical properties, etc. Further, other thermoplastic resins, or inorganic substances such as titanium oxide, calcium carbonate, and magnesium hydroxide, or various additives (flame retardants, heat-resistant stabilizers, or the like) may be blended as needed. In the second component constituting the conjugate fiber of the present invention, it is generally suitable that the fluorene crystalline polypropylene accounts for at least 75 wt%. In the composite fiber of the present invention The first component and the content of the ethylene-containing olefin copolymer The second component having the crystalline polypropylene constitutes a side-by-side cross section of a specific structure. The fiber component having a right angle to the fiber axis contains the first component of the ethylene-olefin copolymer in the range of 55 to 9 % by weight of the outer periphery of the fiber, and contains crystals. The second component of the polypropylene is 45 to 10%. The first component containing a specific ethylene olefinic copolymer accounts for 55% or more of the outer circumference of the fiber, and can enter 12 200934897

jpil.UUC ❹ ❹ Heat treatment at 100 C or less; in the case where the second component containing crystalline polypropylene accounts for 1% or more of the outer circumference of the fiber, the crystalline polypropylene is continuously present in The surface of the fiber can be reduced in the interfiber friction when the ethylene/α-olefin copolymer is used on the surface of the fiber, or the friction and adhesion to the metal, the spinnability, or the carding workability in the carding process. In particular, in the cross section of the fiber at right angles to the fiber axis, it is preferred that the first component containing the ethylene.α-olefin copolymer accounts for 6〇% to 8〇% of the outer periphery of the fiber, and the second component containing the crystalline polypropylene accounts for 40 to 20%. Further, in the conjugate fiber of the present invention, in the fiber surface at right angles to the fiber axis, the boundary line between the first component and the second component rides on the side of the second component to be convexly curved. By having such a structure, the boundary length of the first component and the second component is increased as compared with the composite fiber of the general coplanar structure in which only two components of the half moon are joined, and the bonding between the components is The area is increased, and the structure of the (four) bismuth component (four) component is obtained, whereby the peeling of the second component from the conjugate fiber can be suppressed. In particular, in the cross section of the fiber at right angles to the fiber axis, the intersection of the boundary line between the i-th component and the second component which curves the curve which is curved toward the i-th component side and the outer periphery of the fiber is set to a and b, by dividing the line segment a1 connecting the a and b into a point e of two equal parts, and satisfying the relationship between the point of intersection with the outer circumference of the fiber on the side of the line and the second component side. The one-component side of the above side is curved to have a structure of (10). In the satisfaction of better 岐d~, and then 13 200934897

^UZ/jpil.UUC is better 疋cd^l.5ce, particularly preferably in the relationship of cd^2ce, when the recombination of the composite = and the heat shrinkage during heat treatment or forming are changed, The i-th component side is curved into a convex curve. When the boundary line between the 帛1 component and the second component is regarded as the part of the outer circumference of the second component, or the outer circumference of the ellipse, it is preferable that the boundary line The length of the g) is greater than the total outer circumference β of the circle or ellipse to be traced by the second component, and the second or the second is preferably greater than or equal to 6〇%. In particular, the diameter of the circle or ellipse of ϋ-ί:: or both ends of the long pumping = compound σ, ' \, ' is a right angle with the fiber axis and the boundary between the second component and the fiber = IS point a The length of the b-joined line segment is f>ab, and the cross-section of the fiber can be formed in the cross section of the f-bonded fiber. The first component ❹(4) peak (four) (four) is divided into the (four) dimension axis in the form of straight shape or fiber manufacturing. It is better that the ratio of the strength to the elongation of the second work is not the same as the ratio of the elongation of the _〇~= to the ratio of ~=30/70, the silk head ίίη = It can be manufactured by using the previously known side-by-side type composite spinning patent, Japanese Patent Laid-Open No. 48-11417. The parallel type composite spinning head described in U2-74011, 200934897, in order to form the cross-section of the conjugate fiber of the present invention by using the side-by-side type composite spinning head, the first part containing the ethylene·α-contact copolymer The balance between the composition and the second component containing crystalline propylene in the secret flow (viscosity, etc.), the contact index (μι) of the two components, and the melt mass flow rate (10) R), etc. It is adjusted. For example, for the component containing the Epstein-Barley alpha-smoke copolymer, the fluidity at the temperature of 19 〇t: at the temperature of the melt is measured. 'Selected according to the change in the flow property (shadowing viscosity) The temperature at which the fluidity of the fiber is reduced (minus), and the extrusion temperature of the fiber-forming condition is also the same as the second degree of liquidity (viscosity) of the second octet containing the crystalline poly(tetra). When the degree of melt flow (melting viscosity) of the first component is relatively high, the melt fluidity (melt viscosity) of the first component is selected to be relatively large. The proportion of the first component on the fiber surface of the fiber is relatively increased. Although the temperature dependence (viscosity) at the time of melting differs depending on the resin used, it cannot be generalized, but the melting index (ΜΙ) of the 匕成刀 and the ratio of the second component (=, when i The ratio of the number of components (the ratio of the flow rate (MFR) of the shards of the two knives is 15 to 3. The cross-sectional shape of the conjugate fiber of the present invention is easily formed to be in the range of 1·8... The higher the ratio, the easier the shape is. = L2 卜成 Therefore the second component occupies the outer circumference of the fiber so that the same extrusion temperature, melt viscosity 'can also be changed by the tree 15 200934897

JU^/J>pil.UUC is to improve two = complex, ❹

The degree of discharge of the resin or the resin is selected as follows: ., :: The extrusion temperature is selected to increase the manufacturing of the weaving dimension. Γ = surface coating treatment of fibers. The treatment agent is mainly = agent, and this outer-step increases the surface static of the fiber. It can be: the acid salt or its epoxy Ethylene adduct, the pear sugar alcohol:: Wei Wei, etc. The composite fiber of the wire-seeking or basic invention is heat-treated at track C for 5 minutes ^^ =' is preferably less than or equal to 3. %, _ The heat shrinkage rate of the present invention means that the conjugate fiber of the present invention is made into a staple fiber and thrown into a carding machine, and the fiber taken at the card exit is _ In the case of a predetermined shape, after the shape is specified, heat treatment is performed for 5 minutes at 10 ° C, and the difference (decrease amount) between the dimensions before and after the treatment is expressed as a percentage (%). In the present invention, the heat shrinkage ratio specifically refers to a value which is obtained by cutting the composite fiber of the present invention into any degree of 3 〇 to 65 mm to form a short fiber, and then the short fiber. Put into a small carding machine 16 200934897 /^pn.uuc ❹ (miniature carding machine) to make a fiber web having a basis weight of 2〇〇g/m; then use a paper pattern of 250 mm x 25 〇 mm. Cutting the web along the paper in the machine direction (MD) and the direction (CD) at right angles to the machine direction, and then placing it for 1 〇 minutes before the heat treatment is about to be carried out. The length of the MD is then treated by a circulating hot air entertainment box and then _length again, and then the value of the heat shrinkage rate is calculated according to the following formula. Heat shrinkage rate (%) = {(L.-L) / L. } χίοο L〇 : Length of MD before heat treatment L: Length of MD after heat treatment The smaller the value of Ϊ, the smaller the shrinkage of the web at the time of non-woven, and the better the non-woven fabric with good texture can be obtained. The conditions for the heat shrinkage of the fiber-reinforced fiber are obtained by the combination of the processing conditions of the second part of the invention, the non-woven conditions, the more stable the processing, and the combination of the resin of (10) the former (four) resin. 'In the heat treatment step in the production of fibers, the expandable structure and the crimp of the resin are formed, and the tangent cross-section is easy to show, and the result is that the bulkiness of the fiber is improved and the cut is completed. It is used to form a collection of high-dimensionality of non-woven fabrics, that is, a fiber web, if it shrinks in the body. Because of the mr heat treatment, it is also expected that the bulky conjugate fiber in the state of the second eyebrow after the fiber is processed from the woven fabric will not be able to maintain the original bulkiness. Further, in the fiber web, in order to make the degree of freedom of the fibers in the mesh in the weight per unit area distributed, the degree of distribution is different, so that it is easy to generate a portion of the f from the heat treatment during the heat treatment at the time of non-woven fabricization. shrink. Therefore, the portion that is more easily contracted makes the surrounding = gathering bundle shout as a block, _ poly # into bundles _ less 'eight ❹ ❹ the weight per unit area decreases, so the unit area on the non-woven fabric is heavy = uneven Extremely clear, it is difficult to obtain (four) uniform non-woven fabric. In contrast to the 'composite fiber of the present invention, whether or not the f-minus=column-type cross-sectional structure, the fiber cross-section of the two-opening angle disposed in the following manner accounts for 55 to 9 % of the outer circumference of the fiber, and further the crystalline polypropylene (4) 2 components; the boundary point is 7Q~cut. Ethylene of c: It is preferred to use a molecular weight distribution (Mw/Mn) of i 5 to $degree 0.87 to 0.91 gW, and a melt index (10) of 1 〇~ type olefin. It is possible to suppress the shrinkage property by the potential crimping by the parallel surface structure, and to suppress the shrinkage property at the time of heat treatment processing so that the range which can be stably infiltrated or formed and cured is 5 〇% or less. The bismuth resin of the present invention having a specific composite structure and a specific composite structure exhibits such an excellent shrinkage suppression mechanism, and it is not known that the specific ethylene (tetra) hydrocarbon copolymer is described, and it is Furthermore, it is possible to make a fiber with a specific fiber cross-sectional shape, and it is surprising that the fiber axis can be suppressed, but on the other hand, it cannot be 200934897.

J\JL· / Jpll.UuC A non-woven fabric having excellent bulkiness, good texture, and excellent heat treatment processing characteristics at a low temperature of 100 ° C or less, which is generally considered to be the opposite performance. ❹

The fineness of the conjugate fiber of the present invention is not particularly limited. The physical properties of the components constituting the conjugate fiber and the step stability at the time of production may be selected, and the conjugate fiber may be processed into a fineness of a nonwoven fabric or a molded body. For example, in a use of a cotton pad (c〇smetic puff) or a drug-coated sheet that directly contacts a person's skin, it is preferable to select "in addition to the ink of the printer" within a range of 1 to 5 dtex. g (inkcartridge) and the like are representative of the liquid retaining material, and it is suitable to use 丨~(7) out (3) of the formula f, 'external' in the middle of the home fragrant aromatic core of the Lai New volatile material 'suitable is 1~20 dtex The scope. Or short-term, it can be a long fiber fiber yarn b / fiber material 'the degree of cut can be appropriately selected according to the compound (4) method or use. As the short fiber, in the case of a dichroic shape, it is preferably set to a surface of, for example, a ~(2) plane, and a texture of a card or a fiber web of 25 to 75, preferably a bright composite fiber = another 'utilization' The air-spinning (singularity) method is preferable to the case where the staple fiber is made into a non-woven fabric, and the air-spun staple fiber (chop) is skillfully mm. In the entangled, web or non-woven fabric of the present invention, the sigma fiber is a type of crimp which is obtained by opening the fiber bundle to obtain a fluffy type. The number of crimps or the fineness and the length of the cut of the processing method or the use of the fibers are appropriately selected depending on the type. For example, when the composite fiber (short fiber) of 3.3~· 19 200934897 ^υζ/Dpu.aoc i38~45mm is made into a fiber by the carding method, it is better to compensate the number of U)~25 channels/25 Mm · J port. 3 to 6.6 dtex fineness. When the composite fiber with a length of 3 to 6 is cut into a fiber web by air spinning, it is preferably given in the range of 5 to 15 channels/25 coffee. The type of shrinkage can be exemplified by a ngzag shape or a spiral structure. ❹ In order to add the composite fiber of the present invention to the non-woven fabric, it is not necessary to make the fiber _ after the formation of the fiber _ (4) so that the woven fiber is not woven, so that the conjugate fiber passes through the carding _; turn::====, but is not limited to these method. When these shapes are used to significantly impair the effects of the present invention, other fibers can be mixed. Yes, 1 =, for example, a screw (Curry & Γ1 Gn) for improving water retention, and a hollow fiber (Polyflber) which is made of polyethylene terephthalate for the purpose of making the nonwoven fabric more fluffy )Wait. The formation of the required unit area by the formation of the webs

Mn heats the fiber axis (4) so that it is not woven before heat treatment, and the strength is improved or the texture is changed by the water flow or the spe. ee ee epuneh method. The light needle i is a heat treatment method. Examples include hot air bonding method, hot water bonding method, and sputum method. Among them, the heat treatment method after the composite fiber-shaped two-dimensional net of the present invention is preferably hot air bonding or heat 20 200934897

Jyj^L/^yiL.LiuC method. The hot air bonding method softens the heated == component, so that the fiber cross = fine and has rJ: wide reduction * city _ hiding like a face = method, and thus is suitable for providing the subject of the present invention p The bonding method of non-woven fabrics with good chlorine and shellfish and good texture. The ship is suitable for providing fluffy and "feeling non-woven fabrics"

When the short fiber having the parallel cross-section of the two types of the shape of the moon into the shape is cut by the hot air bonding method, the heat treatment is performed on the fiber web on the conveyor belt. Other bonding methods tend to shrink more than shrinkage, and it is difficult to obtain a non-woven fabric having a good texture or a good texture. On the other hand, the conjugate fiber of the present invention is effectively inhibited by the shrinkage caused by the heat treatment for non-woven fabrication, so it is particularly suitable for use in the hot air bonding hood, and the method provides not only the maintenance of the original fluffiness. A special kind of non-woven fabric with excellent texture. The 'hot water bonding method is a method in which the low-melting component of the conjugate fiber is softened and melted by passing hot water or steam through the fiber web to bond the fiber interlaced portion. In the conjugate fiber of the present invention, since the ruthenium component of the ethylene·α• olefin copolymer having a melting point of from 7 Å to 100 C is more than half of the fiber surface, the original ioo°c or 〇〇 can be applied. 〇 The following hot water bonding method. The medium used in the bonding method is a medium which is relatively cheap and does not require special equipment such as hot water or steam. By using such a medium for processing, it can be substantially washed and applied while being non-woven. 200934897

I The treatment agent for the surface of the composite fiber of the invention. The treatment agent applied to the surface of the fiber is indispensable in the production steps of the composite fiber (short fiber and air-spun fiber, etc.), but depending on the application, it may not be required or become an obstacle after the nonwoven fabric or the forming process. For example, a food protection sheet or a packaging material or a tray which directly contacts food, a cotton pad impregnated with cosmetics, and a cotton swab (stiek) # for applying the medicine to the affected part. There is also a method of forming a treatment agent for a fiber surface with a safe food additive or a component of the composition, or a method of setting a cleaning step to form a cleaning agent after forming a nonwoven fabric or a molded body, but even if it is safe for human body. The composition constitutes a treatment agent and does not have an effect on the cosmetic or the pharmaceutical agent. In order to maintain the stability of the product, it is preferred that the treatment agent remains as far as possible from the non-woven fabric or the molded body. Further, after the processing is performed into a non-woven fabric or a molded body, the cleaning step is further required, and additional time is required, which is disadvantageous in terms of cost. Therefore, for the use as described above, it is possible to efficiently provide a non-woven fabric which is bulky and can be efficiently disposed at a low cost, and the amount of adhesion of the treating agent hardly adheres or the treating agent is effectively reduced to such an extent that the above-mentioned adverse conditions are not caused. In terms of the molded body, the industrial sound of the composite fiber of the present invention which can be adhered by hot water is extremely large. It is preferable to use the composite fiber of the present invention to form a non-woven composite fiber by heat-sealing by heat-air bonding by means of a water-viscosing method, and to form a non-woven composite fiber by hot water bonding, and hot water bonding. Line forming processing. The non-woven fabric area weight when the conjugate fiber of the present invention is processed into a non-woven fabric can be appropriately selected depending on the purpose of use. For example, in the use of oyster spoons, it is desirable to select within 2G~5G coffee 2 = 22 200934897

jpu.uuC is preferably used in a range of 3 〇 to 150 g/m 2 in a cotton pad or a chemical impregnated sheet, and is preferably 50 to 250 in a cotton swab for drug application. The range of g/m2. Further, the bulkiness of the nonwoven fabric when the conjugate fiber of the present invention is processed into a non-woven fabric is calculated by a specific volume, and it is easy to obtain a bulkiness of 20 cm 3 /g or more, and it is also suitable to obtain a ratio of more than or equal to ^

❹ When the conjugate fiber of the present invention is processed into a non-woven fabric, other kraft cloth or fiber web or enamel plastic thin plaque may be laminated on the kraft cloth according to the purpose: a breathable thin enamel, an apertured film or a perforated non-woven fabric. It is bonded or laminated with a stretchable nonwoven fabric composed of an elastomer (dast mer) or an olefin copolymer. " In the present invention, the term "molded body" means a fiber, and the process of adding the product after the addition of the king and the step of the non-woven step is performed without the step of non-woven. When processing, Product. Put in a specific mold, in the dimension - "formed body". When not through the fabric. If the composite fiber is obtained by the carding method or the air-spinning method, the fiber web of the present weight can be woven by the woven fabric, and the non-woven fabric of the unit area is overlapped and woven. Method or hot water wheel _ integrated and 23 200934897 juz / jpu.aoc The invention ^ after the composite fiber is not woven, the non-woven fabric is seriously worried about the required unit area weight # and thickness, or the money cloth is cut and: and ^ Then, the obtained person is placed in a special mold, and heat treatment is performed in this state to obtain a "molded body". The "molded body" obtained by using the conjugate fiber of the present invention can be easily subjected to secondary processing such as "sectioning" or "processing". Ding", ground Φ

The composite fiber of the present invention can be used as a core material for a cosmetic cotton or a drug coated sheet, an antiPyretie sheet, a food tray, a cushioning material, a cushioning material, a household fragrance, and the like. Liquid-repellent materials such as wetters, seedling sheets (raising), and the like. [Examples] Next, the present invention will be specifically described by way of Examples and Comparative Examples, but the present invention is not limited to the following Examples. Further, the definitions and measurement methods of the terms used in the present specification, particularly the examples and comparative examples, and the following Tables 1 to 3 are as follows. (1) Melt index MI: Measured under conditions of 19 (TC, 21 2 N based on ASTM D-1238. Moreover, the numerical values shown in the table are numerical values measured for the resin: g/min) (2 The density is measured based on JIS K7112. 24 200934897 juz/Dpu.aoc and the values shown in the table are the values measured for the resin. (Unit: g/cm3) (3) Molecular weight distribution (Mw/Mn) The molecular weight distribution is a ratio of the weight average molecular weight to the number average molecular weight, which is determined by gel permeation chromatography. "GPC-150C" made by Waters ❹

The measurement was carried out. (Tube: TSKgel GMH6-HT manufactured by Tosoh 7.5 cm I.D.x60 cm 1 piece) and the values in the table are values measured for the raw material resin. (4) Melting point The melting point indicates the temperature at which the resin is melted and is measured by differential scanning calorimetry (DSC). (Unit: €) Use the DSC "Q-l〇" manufactured by INSTRUMENTS to make the adjustment. The resin was cut into a weight of 4.20 to 4.80 mg, filled into a sample pan, and covered. In the A flushing, the heating rate is ~30 °C / min from 30. 〇 Warm up to 2 〇〇乞, enter the net to get the melt _ table. Tabulation analysis*

(5) The mass flow rate of the solution (mfr) X is based on JIS K72H), and the value of the tantalum is determined at 23 (rc, 21.2 N). (6) The fineness and fiber diameter are determined by the unit length. The weight of the fiber, the fiber control table, the thickness of the fiber, the true. (Unit: dtex) 25 200934897

y i k field · ^ fiber difficult "^ diameter 0 degrees. In the case of anaesthesia + death, 100 fibers are arbitrarily selected from the image obtained by scanning electron microscopy, and the average value of the diameter and the specific gravity of the fiber are measured. The fiber is occupied by the outer circumference of the first section. Rate, cross-sectional shape observation π dry spear = conjugate fiber is cut at right angles to the length direction. Obtained by optical ray mirror or sweep (four) electron beam mirror ride. The first component is relative to the fiber axis. The percentage (%) of the outer circumference of the fiber in the cross section of the fiber at right angles; and the first component and the second component in the cross section of the fiber at right angles to the fiber axis when the curve is bent to the first component side The two points at which the boundary line intersects the outer periphery of the fiber are set to be a line c which divides the line segment ab connecting the a and b into two equal parts and extends in a direction at right angles to the line segment ab and When the point at which the boundary between the i component and the second component intersects is d, and the point at which the outer edge of the fiber on the second component side is set to e, the length of the fiber cd is relative to the length of the segment ce (cd/ce) In addition, the first component and the second component which are bent to the i-th component side and convex = are drawn. When the boundary line of the division is regarded as a part of the outer circumference of the circle or ellipse drawn by the outer circumference of the second component, the ratio of the length of the boundary line to the total outer circumference h of the circle or ellipse to be drawn by the second component ( g/h); further, the diameter of the circle or ellipse depicted by the second component 26 200934897 juz/jpii.aoc or the long axis of the composite fiber _ is in the cross section at right angles to the fiber, or The length of the long axis [the length of the line segment ab ^ is 0. Using an optical microscope made by NIKON or a Japanese-made electronic (4) f/7 limited (4) scanning electron microscope "Jane_T22Q" The length of the portion of each component exposed on the surface of the fiber was measured and substituted into the following formula to calculate. Further, the difference between the second component and the second component in the fiber cross section can be confirmed by heat treatment in a state where the fiber is cut at a right angle to the longitudinal direction. For example, the cut fiber is placed in an oven drier at 10° C., and the second component is softened and melted, and then observed by an optical microscope or a scanning electron microscope to confirm which part of the fiber cross section is the first. ingredient. ^ The length of the circumferential surface of the first component (%) = (Li/L) χ100 L1 : the length L of the circumferential surface of the first component: the total length of the peripheral surface of the fiber cross section (8) The heat shrinkage ratio 〇 The heat shrinkage rate is The fiber web indicates the change in the unit length (reduction rate) before and after the heat treatment, and is calculated from the ratio of the amount of change to the unit length. ς Bit: %) Flat paper size of 250 mm x 250 mm, taken in the machine direction (MD) of the fiber and in the direction (CD) at right angles to the machine direction, respectively, taken along the paper type through the small card The web was cut at 200 g/m2. After standing for 10 minutes, the cut web was then placed on kraft paper (350 mm x 700 mm) and the length of the MD was determined. 27 200934897 ^uz/^pix.aoc Thereafter, the kraft paper is folded in half to form a state of lightly covering the top of the fiber web, and placed in a convection oven manufactured by SANYO in this state (circular hurricane, at 10 (TC) After heat treatment for 5 minutes, the sample was taken out from the 'dryer, and left to stand at room temperature for 5 minutes, and the length of MD was measured again. Then, the heat shrinkage rate was calculated by substituting into the following formula.

Heat shrinkage rate (%) = {(Lo-L) / Lq} χ1〇〇L〇: length of Md before heat treatment L. length of MD after heat treatment (9) unit area weight denier unit area weight means non-woven fabric and fiber The weight per unit area of the net is calculated from the weight of the non-woven fabric or web that is cut into a certain area. (Unit: g/m2) The weight of the non-woven fabric cut into 250 mm x 250 mm was measured by a weighing electronic balance "HF··" manufactured by a & D, and the weight per unit area was calculated by amplifying the exercise value by 16 times. (10) Bulkness (specific volume), the degree of looseness indicates the weight per unit volume of the non-woven fabric, and is calculated from the unit area weight and the thick ray. (Unit: Cm3/g) The thickness of the non-woven fabric was measured using the Digi-Thickness (2) (an Vil) load of 2 g/cm2 and the speed of 2 mm/sec. The value (leg) and unit area were measured by the Toyo Seiki Co., Ltd. Reset (g/m2) to calculate the texture of the poncho (11), the texture of the non-woven fabric, hand (four) softness, dynamics, 28 200934897 ^ uz / ^ pir. aoc expansion, etc. The panel test of the paneler was judged and evaluated on the basis of the three stages of "good", "normal" and "poor". Examples 1 to 6 and Comparative Examples 1 to 6 will be described below, and the results of the above are summarized in Tables 1 to 3. [Example 1]

❿ The first component is ethylene obtained by polymerization using a metallocene catalyst. (2-anthraquinone copolymer, olefin is octene-1, and contains 1 〇mol% in the copolymer. The ethylene.α_lean hydrocarbon The copolymer has a density of 〇88〇, a melting point of 72 C, a melt index (ΜΙ) of 18 g/l〇min, and a molecular weight distribution (Mw/Mn) of 1.9. The second component is a melt mass flow rate (MFR) of 8 years old 1 〇 min, and the melting point is 16 〇. Crystallized polypropylene of 〇. A 竣 hollow ceramic 樘戚 is used as a constituent component, using a parallel type composite spinning head, with the first component / the second component = 50 /50 volume ratio, and the volume ratio from the knife Z wind division = 5 〇 / 5 第 on the i ^ ^, and on the i r rc: the second component side is the assigned extrusion temperature (two sets of the temperature dtex = Good. Then, the obtained fineness of 6.5 is heated = up to Wnt) using a twisted fiber (staple fiber) with a machine roll = θ is .2 #m) ^ (4) (MI), molecular weight distribution (Mm/Mn). 29 200934897 ju//^pii.aoc i The melt flow rate (mfr) is measured according to the measurement methods of (4) and (5) above. The results of these results are shown in the items of the composition of Table 1. According to the fiber properties of the above-mentioned (6 conjugate fiber (short fiber), a schematic view of the j-dimensional cross section is shown in the fiber cross section in the direction of the right angle of the silk item of Table 1, and no component is found. Cd/Ce=7.5, f>ab, and g/h=0.80. The composite fiber (short fiber) obtained by Guanfu f was put into a 500 mm vortex m cotton machine to take the fiber web. The fiber pass in the carding step The fiber web was measured according to the measurement method of the above (8). The results are shown in the silky item of Table 1. In addition, 50 g of the obtained conjugate fiber (short fiber) was put into 500 _ wide production η ϋ (four) scarf 'money _. New Zealand Lai wind circulation type hot insect rough air processing machine, at a set temperature of 9 〇 processing time is 12 coffee under the condition of the weaving dimension = according to the above ( 9) The measurement method of (1) is used to measure and evaluate the physical properties of the non-woven fabric. The knots are referred to in the item of non-woven fabric properties in Table 1. Table 1, using the obtained composite fiber (short fiber) Fiber web

:! 5:. The lower value, so the use of hot air bonding method is also a non-woven fabric with a loose texture and good texture.丌 [Example 2] 30 200934897 ^uz/^pu.aoc mol%. The ethylene·α-dilute hydrocarbon copolymer had a density of 885 885, a melting point of 78 C, a smelting index (MI) of 30 g/μ〇min, and a molecular weight distribution (Mw/Mn) of 2.0. The second component is a crystalline polypropylene having a melt mass flow rate (MFR) of 16 g/1 〇 min ' and a melting point of 160 °C. In the parallel type composite spinning head, the two components are used as the constituent components, and the volume ratio of the first component/second component = 50/50 is 20, and the side of the j component is 20 (TC, the second component side is Fine. c. Extrusion temperature (set temperature) 10 = Ship spinning under conditions. When coiling, make anti-electricity with sorbose riding fatty acid bismuth salt-based ethylene oxide adduct as the main component Attachment. The spinning property is good. Then, the obtained fineness is 1〇. 2 The drinking and the filament are extended by the heating device with the heating view of 6Gt; the crimping imparting device is given the crimping and cutting </ br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br> The measurement method of the body mass, t(2), and (5) is used to measure the composition of the melt [= rate (MFR). The results of these tests are shown in Table 1. The outline of the measurement method according to (4) and (7) above. Figure - and shown in Table 1 of the transition Β 2 =: the cross section of the fiber in the direction of the angle == 6. 〇, f &gt; ab, wg obtained composite fiber ( Fiber) investment to 500 mm 31 200934897

i jpn.uuC

In the small card of width, 'take the web.' The fiberiness in the carding step is good. The fiber web was subjected to the heat shrinkage rate according to the measurement method of the above (8). The results are shown in the silky item Φ of Table 1. Then, the obtained conjugate fiber (short fiber) is put into a carding machine of 500 mm wide production to form a fiber web, and then a hot air circulation type wind turbine is used, and the set temperature is 98 ° C, and the hot air wind speed is 〇 The webs were processed at .8 m/see and processed for 12 sec. According to the measurement method of the above &gt; B to (11), the obtained hot air non-woven fabric was measured and evaluated. The results of the results of the non-woven fabrics shown in the table are as follows: the fibers of the obtained conjugate fiber (short fiber) have a low touch of 17%, so that the fluffy and texture is obtained in the processing of the smear bonding method. And a non-woven fabric with good texture. [Example 3] The first component was an ethylene-glycolic hydrocarbon product obtained by polymerization using a metallocene catalyst. The α-olefin was octene-containing 5 mol/0 in the filament. The density of the acetamidine α-olefin copolymer is 〇Hybrid index (10) of 3 Gg/1 Gmin, and the molecular weight distribution is Μη98): 2.1 ° S 2 component is the mass flow rate of the solution (Mf is magical mm, and the melting point is Crystallinity polypropylene of 16 〇 °c. The two components are used as a constituent component, and the volume ratio of the side-by-side type composite spinning octagonal component / the second component = 45/55 is used, and the first composition is &lt;: The second component side is fed at a temperature of 26 ° C (set temperature) under the conditions of (four) melt spinning. When coiling, make sorbose riding fatty acid 32 200934897

The epoxy Ethylene addition of JUZ/jpil.UW vinegar and the potassium sulphate potassium salt is then obtained. The obtained fineness is =: two is the same as: the heating device of the heating roller is extended. After that, cut into 38 coffee, - (Fiber diameter of 25 G (four) composite fiber (short ❹ ❹ for the first component, according to the above (1) ~ (4 Ϊ two point wide melting index (MI), molecular weight distribution (Mw / Mn two movement The rate of the results (MFR) is shown in Tables and (7). The peeling of the measurement method is not found in the fiber cross section of t::: 3.〇, f&gt;abL〇.7〇. The j-type composite fiber (short fiber) produced is put into the position of 500: good. The fiber is taken from the fiber. The fiber through the 2D mesh in the carding step is measured according to the measurement method of (8) above. Putting - (4) Yao* system, fiber) into a small 500-square-width 于 于 ' 'New hot air circulation type hot air processing bottle speed ♦, processing time ~ (11) injection + fiber mesh processing According to the above (9), and 'the physical properties of the obtained hot air non-woven fabrics are measured and evaluated 33 200934897. The results of these are shown in In the project of non-woven fabric properties, the fiber obtained by using the obtained composite fiber (short fiber) has a low value of 28%, so that it is added by the hot air bonding method; a non-woven fabric having a fluffy texture and a good texture is obtained. Example 4] ❹ The same composition as in Example 3 was carried out, and the spinning and stretching under the same conditions were carried out. After the crimping device was crimped, it was cut into 5 broths, and the fineness was 4.4 dtex (fiber diameter was 25). .〇(4)^Spun staple fiber). The composite fiber obtained from 200 g of the soil and the hole (the staple fiber for air-spinning) has a pair of forming heads of the forming head, and the fiber is made into a fiber. The fiber is discharged from the air-spinning machine and the hot air circulation type hot air processing machine is used. The set temperature is: wind speed is 0.38 m/sec, processing time is 14: wind bonding processing. According to the above (9)~ (8) Measurement; = The physical properties of the hot air non-woven fabric are defeated and evaluated. In the project of non-woven fabric properties of Table 1, σ; ^Comprehensive composite fiber_Air-spinning method for making fiber shaft, Linfeng bonded work' results Can get fluffy, shrinkage is inhibited, Non-woven fabric with good texture and texture. Buy [Comparative Example 1] Μ + The component is an ethylene olefin copolymer, which is octene, and has 2 mol% in the hill poly 3. The density of the ethylene·α-olefin copolymer is 〇91, II. 34 200934897

^&gt;KJ^ / ^pn.uuC = M1GIC: Melt index (MI) is 3_min, and molecular weight Ιΐ6ε/Γ〇n The second component is the melt mass flow rate (MF10 is crystallized by these two components) Propylene. The head is composed of the first component, and the side-by-side type composite spinning side is c, and the second is formed under the condition of the first one. The boundary line is drawn to the first component side. Bending into a convex shape: fatty acid vinegar and ten attached to the line II. The antistatic agent which is the main component of J J ί is good in human nature. Then, the obtained fineness of 11 5 dtex is sputtered: =: = ί ,, and the heating device is extended to a twist of 3.8 dtex (after the fiber is shortened by '2 to 38 mm, the fiber is obtained for the second=29%, Melt index (10)), molecular weight distribution (Mw/Mn). Point, melt quality i The above (4), (5) (four) square wire was used to determine the dissolution rate (MFR). The results of these results are shown in item + of structure 77 in Table 2. The fiber properties of the conjugate fiber (short fiber) obtained by the above (6) and (7) are measured, and the results of the film are shown together with the outline of the fiber surface in the silk material of Table 2. Further; In the fiber wearing a direction in which the fiber axis is at right angles, d 3·5 ' f &gt; ab ' and g/h = 〇 55. The composite fiber (short fiber) obtained by the blue g is put into the leg 35 200934897

/ jpn.uuC ' Take the fiber web. The fiber in the carding step is obtained by using the L:=: table, the quality item of the small carding machine, and the machine is put into the processing machine of 5GG mm width, and then, C'祠' and then used. The hot air circulation type has a hot air temperature of 98 ° C, a hot air wind speed of G.8~qing, and processed honey: eight sec conditions to process the fiber webs, but

Since the melting point of the copolymer of the industrial and industrial octene olefins is high, the addition at 98 °C does not (10), and the nonwoven fabric cannot be formed. In this way, if the point is 1 (^# and the above-mentioned embodiment 3 (4), except that the material is substantially inconsistent with the description of the third embodiment, it is not possible to The non-woven treatment at the low temperature or the enthalpy of the forming process at the low temperature is used. Therefore, the evaluation of the shrinkage rate of the fiber under the loot which is premised on the low-temperature processing has lost its meaning of measurement. [Comparative Example 2] The first component is an ethylene/olefin copolymer, and the content of the α-olefin from propylene to butene is 3 mol% and 3 mol% in the copolymer. The bond of the ethylene·I olefin copolymer is 0.897. , melting point is acceptable, the melt index (MI) is 4 g/10 min, and the molecular weight distribution (Mw/Mn) is 2 〇. The second component is the melt mass flow rate (MFR) of 8 g / 1 〇 min, and The melting point is 16 〇. (: crystalline polypropylene. 乂 These two components are used as a constituent component, and a parallel type composite spinning head is used, and the volume ratio of the first component/second component = 50/50 is used. 1成36 200934897 ❷ = ethylene oxide adduct of dodecylphosphoric acid potassium salt as == 峨 剂 agent attachment However, it is true that the composite compound of the county is a small amount of =. Although it is found to be glued, the obtained spinning complex δ filament having a fineness of 98 dtex is extended to a heating device with a heating roller of 咐 to 7; After the crimping device is crimped, it is cut into 38 sheets, and a composite fiber (short fiber) having a fiber of 6.8 dtex (fiber is only 31 1 claw) is obtained. For the first component, according to the above (1) to (4) The measurement method is: 疋 度 degree, melting point, melting index (MI), molecular weight distribution (Mw / Mn). For the second formation; ^ ' according to the above (4), (5) measurement method to determine the dissolution, melt quality The material (MFR) was read. The results of the above were shown in Table 2 = component. The composite fiber (domain dimension) obtained by the above (6) and (7) was used. These are: a schematic view of the cross section of the fruit and the fiber - and are shown in the silk item of Table 2. The melting index (MI) of the first forming knife is low, resulting in a fiber cross section in the direction of the fiber axis. In the middle, the boundary line 1 of the first component and the second component is curved toward the second component side in a convex shape. Therefore, it is impossible to measure c ce ' It was not possible to measure f and _. In addition, peeling between the components was found. 100 g of the obtained conjugate fiber (short fiber) was put into a small card of 500 mm 4 to take the fiber. The fiber passability in the k-cotton step was poor. The heat shrinkage rate was measured for the fiber web by the above-described measurement method. The results of the above were shown in the item of mussels of 2, and 50 g of the obtained composite fiber. (short fiber) 37 200934897

/ ^pix.uuC is then inserted into a small card of 500 mm width, made into a fiber mesh and then hot air circulation handle hot air elevator, at a set temperature of 98 ° C, hot air wind speed, 0.8 m / sec, processing When the time was 12 sec, the webs were processed, but the shrinkage was large, and the non-woven fabric was low in strength, and a non-woven fabric having a good texture and texture could not be obtained. The heat shrinkage rate of the obtained composite fiber_fiber_ was as high as 55%. [Comparative Example 3]

The first component is an ethylene.α-olefin copolymer, and the olefin is propylene, and the plant contains 15 m〇1%. The density of the vinyl dilute copolymer was a core 3 denier of 5 "C" melt index (MI) of 21 g/l 〇 min and a knife cloth (Mw/Mn) of 2.0. The second component is a melt mass flow, "(MFR) is 16 g / 1 〇 min, and the bright point is 16 〇. [Crystal propylene. Using these two components as a constituent component, using a parallel type composite head : The volume ratio of the /component/second component=50/50, and 26 (the extrusion temperature (set temperature) of the rc component and the second component side are spun. However, when winding, the spinning composite Two filaments are produced; the spinning composite filaments are stretched. The schematic diagram of the fiber cross-sections of the ratio is obtained by the self-adhesive composite spinning, and the silk is obtained by the silk. Since the melt index (MI) is lower than the melt mass flow rate (MFR) of the second component, the boundary between the soil η: and the second component is in the fiber cross section in a direction perpendicular to the fiber axis. The linear composite is a half-moon composite cross section at a right angle to the fiber axis 38 200934897

/ ^pij..uuC weave =: AC, 0, and peeling was found between the composite components. The measurement of the dense sound and the heart is carried out according to the measurement methods of the above (1) to (4). Points, molecular weight distribution (Mw / Mn). The composition is == two rate (job). The results of these are shown in Table 2 [Comparative Example 4]

O

The chest is combined with two kinds of resin as the first component. One of the (four) smoke copolymers 1 · a dilute hydrocarbon is propylene. In the copolymer, the density of the ethylene-ene olefin copolymer is 0.870, the melting point is 75 C, and the index (ΜΙ) is 丨g/1Qmin, and the molecular weight distribution is MW. /Mn) is 1·9° The other resin is C: #·α·olefin copolymer, the hydrocarbon is acetylene], and the content of the fine (4) is =1 mol/ in the copolymer. . The propylene.α-olefin copolymer has a melting point of 128. 〇, and the melt flow scale (MFR) is 16 g / 1 Gmin. (4) The two resins were blended in a weight ratio of 20/80. Further, in Table 2, the physical properties of the ethylene/propylene copolymer which is a resin having a higher melting point are described. The second component was a melt mass having a maneuvering rate (MFR) of 8 g/l 〇 min and a melting point of 16 Å. Crystallization of bismuth Polypropylene. The two-component composite spinneret is used as the constituent component, and the volume ratio of the first component/second component = 50/50 is 200 C on the i-th component side and 260 on the second component side. Melt-spinning was carried out under the conditions of an extrusion temperature (set temperature) of °C, and a fiber-lined surface in which a boundary line between the second component and the second component was drawn and curved toward the first component side was produced.

/ ^pn.uuC , , , "The complex σ fiber. At the time of coiling, an antistatic agent containing sorbitol sulfonate fatty acid vinegar and a bismuth phosphite (4) sulphur oxyethylene residue was attached as a domain. Spinnability is good. Then, the obtained spun 4 a-filament having a fineness of 9.7 dtex was used to extend the force of the heating roller having a diameter of 6 ° C to 26 times, and after being crimped by the crimping device, it was cut into 38 mm. A composite fiber (short fiber) having a fineness of 4.4 dtex (fiber diameter of 251 〃m) was obtained. ❹ ❹ For the first component, the density, the melting point, the melting index (ΜΙ), and the molecular weight distribution (Mw/Mn) were measured according to the measurement methods (1) to (4) above. The melting point and the melt mass flow rate (MFR) of the second component were measured according to the measurement methods of the above (4) and (5). The results of these are shown in the items of the constituent components of Table 2. According to the measurement methods of the above (4) and (7), the fiber results of the obtained conjugate fiber (short age) and the fiber cross-section are measured and shown in Table 2, and at a right angle to the fiber axis. The direction of the fiber loading surface is 0.2, and g/h &lt; 〇.5. — u fork Wtr, J rice S fiber difficult I sister fiber) into the small card of the width, take the fiber mesh. The fiber in the carding step is good in transit. The heat recovery _ was measured according to the measurement 2 method of the above (8) with respect to the obtained fiber web. The result of the results of the silky item g ί 2 =: the conjugate fiber obtained by the kg (short fiber) is put into a small coffee machine of 500 coffee width, made into a fiber web, and then processed by hot air. The machine's work on these fiber webs under the conditions of a set temperature of 98 〇C, a hot air fan of 7 m/sec, and a processing time of 12 sec, but the shrinkage is large, and the non-woven fabric with good texture and good texture is 200934897.

f ^pn.uuC The fiber web of the obtained composite fiber has a heat shrinkage rate of up to 65%. [Comparative Example 5] A mixture of two kinds of resins was used as the first component. One of the resins is low density polyethylene. The low density polyethylene had a density of 〇918, a melting point of 105 ° C, a melt index (MI) of 24 g / 1 〇 min, and a molecular weight distribution of 7.0. Another resin is an ethylene-vinyl acetate copolymer. The amount of ethyl acetate was 2 G wt%, the density of the ethylene acetate copolymer was 0.939 'melting point was 92 ° C, the melt index (MI) was 2 〇g / 1 〇 min, and the molecular distribution (Mw / Mn) is 5.0. The two resins were blended in a weight ratio of 75/25. Further, in Table 3, the lower limit of the resin (4) is the physical properties of the ethyl-acetate copolymer. The second component is a crystalline polyolefin having a melt mass flow rate (MFR) of 8 g/l 〇 min and a melting point of 16 〇〇c. The two components are used as the constituent components, and the parallel type composite spinning head is used in the volume ratio of the first component/second component = 50/50 and is on the side of the ❹ C and the second component. The extrusion temperature of c (the set temperature is) = the boundary line of the second component and the second component is produced, and the knot = fiber which is convex toward the i-th component side is drawn. When taking up, an antistatic agent containing sorbitol Xuanji =: Ethylene oxide blended adduct as a main component is attached. More wire breakage occurs during spinning. The compound composite filament is used as a device (extending to 2.6 times 'transfer_pre-device_roll^mm, obtaining a fineness of 3.3 dtex (fiber diameter is a knife. J into 38 to 1)) composite fiber 200934897 dimension (short fiber) For the first component, the second component is determined according to the measurement method of the density, the melting point, the melting index (MI), and the measurement according to the above-mentioned (4), (Mw/Mn). ❹ Point, melt mass flow rate (MFR). The bee method is used to determine the constituent components of the melt. According to the above (=f results are shown in Table 3, the obtained composite fibers are determined. The results are shown together with the outline of the fiber cross-section in the physical properties of 矣, ', and '. These are also in the qualitative direction of the fiber axis. 9.5, f>ab, and g /h=0.86. I only wear the surface 'cd/ce = 100g of the composite fiber obtained (in the short-width small card, take the fiber mesh., =Man into 500 mm, uneven, so comb The fiber in the cotton step passes, and the fiber is discharged from the middle fiber web' according to the measurement method of it (8). The results are shown in the silky item of Table 3. The shrinkage ratio is 1, and the fiber (short fiber) is put into a composite fiber web obtained by 5 〇〇 _ 50. In the hot air circulation type cotton machine, the system is a step, the hot air speed is G 8 ..., processing = machine, the fiber web is processed under the set temperature, but (3) is a non-woven fabric with good texture of 12 sec. When the texture was increased, the texture of the fiber web obtained with the obtained composite fiber was not obtained, and the shrinkage ratio was 60 〇/〇. The composition was the same as that of Comparative Example 5, and the film was stretched and given by crimping. After the skirt was given the curl, the spinning of the piece was cut into 5 mm and won 42 200934897

jpu.UOC ^i) 3; 3dtexc^ Yes - The obtained composite fiber (gas __) is put into the net, the fiber is formed into a lion gas, and the fiber is made into a fiber. The new fiber is subjected to hot air circulation m/sec, Λ^ machine, degree 98 C, hot air wind speed of 0.38 ❹ ❹ hot air 14 ^ under the condition of the obtained fiber web = ::, although the hot air bonding can be performed under the _ , following 3 in. ..., the law obtains a non-woven fabric with good texture and texture. The results are shown in the table. [Example 5] (IV) 1! The conjugate fiber (short fiber) obtained in Example 3 was formed into a rod-shaped fiber bundle by a carding method. The fiber bundle is made into 1, and is filled into a ^-shaped mold (1Gmmxl() mmx6() mm) of a 20 mesh wire mesh having a wire diameter of 0.29 mm, and in this state, a cyclic type is used. Hot air plus guard, set the temperature to 攸, hot wind

Um^sec, the processing time is 128, and the hot air bonding is performed under the condition that the σ work is obtained. The lining body that is fed has excellent shock absorbing properties. [Example 6] Using the conjugate fiber (air-spun staple fiber) obtained in Example 4, the basis weight was 5 G g/m2__ by air spinning, and the circulating hot air machine was used. The hot air wind speed is 热% m/sec and the processing time is 14 sec. The hot air viscosity is applied to the fiber web 43 200934897

J\J^ / ^pn.uuC is processed. The obtained hot air non-woven fabric was filled in a glass tube having an inner diameter of 8 mm, and directly placed in boiling water in this state, and boiled for 2 minutes. After boiling, it was allowed to cool to obtain a cylindrical fibrous formed body. The obtained fiber molded body is soft and moderate, and has a small unevenness in fiber density, and is suitable for liquid retention of liquids and the like.

44 200934897 ^υζ/Dpn.aoc [Table 1]

Example 1 Example 2 Example 3 Example 4 Component Component The first component used was a resin ethylene·octene·1 copolymer ethylene*octyl-1 copolymer ethylene·octene·1 copolymer ethylene·octene-1 copolymer Material density (g/cm3) 0.880 0.885 0.902 0.902 Melting point (°C) 72 78 98 98 Melt index (g/10 min) 18 30 30 30 Molecular weight distribution 1.9 2.0 2.1 2.1 The second component uses resin polypropylene polypropylene polypropylene Propylene melt mass flow rate (g/10min) 8 16 16 16 Melting point (°c) 160 160 160 160 Spinning condition extrusion; 1 (several set temperature (°c) 1 component/component 2) 200/260 200/260 200/260 200/260 Spinning fineness (dtex) 6.5 10.2 10.0 10.0 Extended condition heating device (heating rod) Setting temperature (°C) 55 60 70 70 Extension ratio 1.7 1.7 2.6 2.6 Silk denier (dtex) 4.4 7.0 4.4 4.4 Cutting length (mm) 38 38 38 5 Fiber surface © 3 3 3 Length of the circumference (Part 1) (%) 85 80 75 75 Web shrinkage (%) 15 17 28 — Non-woven fabric non-woven (Processing temperature is set to 98 ° C) Cocoa Weight per unit area (g/m2) 50 50 50 50 Specific volume (cnrVg) 30 34 38 30 Good texture Good Good Good 45 200934897 ^υζ/^pii.aoc [Table 2]

Comparative Example 1 Comparative Example 2 Comparative Example 3 Comparative Example 4 The resin () used was a mixing ratio [wt%] Ethylene·octene-1 copolymer ethylene, propylene·butene-1 copolymer ethylene·c Dilute copolymer ethylene·propylene copolymer (20) + propylene vinyl · butene-1 copolymer (80) 1 density (g/cm3) 0.913 0.897 0.863 0.870 constituents into melting point rc) 107 81 50 75 minute melt index (g/10 min) 30 4 21 1 Molecular weight distribution 3.0 2.0 2.0 1.9 The second component uses resin polypropylene polypropylene polypropylene polypropylene melt mass flow rate (g/10 min) 16 16 16 8 melting point (°C) 160 160 160 160 Spinning conditions Extruder set temperature (°C) (Part 1 / 2nd component) 200/260 220/260 220/260 200/260 Spinning fineness (dtex) 11.5 9.8 Cannot take 9.7 extension heating device (Heating roller) Setting temperature (°C) 70 60 — 70 Conditional extension ratio 3.3 1.7 — 2.6 Fineness (dtex) 3.8 6.8 — 4.2 Cutting length (mm) 38 38 — 38 Silk fiber section 3 1 0 1 Length of circumference (Part 1) (%) 70 40 50 55 Fiber web heat shrinkage rate ( %) 1 55 — 65 Non-woven fabric non-woven (processing temperature is set to 98 ° C) Does not stick, can not take large shrinkage - shrink large unit weight (coffee 2) — — — — specific volume (cnrVg) — — — — Texture — Poor — Poor 46 200934897 [Table 3] Comparative Example 5 Comparative Example 6 Component Component The first component used in the resin was a mixing ratio fwt%l ethylene. Vinyl acetate copolymer (25) + low density polyethylene (75) Ethylene. Vinyl acetate copolymer (25) + low density polyethylene (75) Density (g/cm3) __ 0.940 0.940 Melting point (°c) 92 92 Melt index (g/10 min) 20 20 Molecular weight distribution 5.0 5.0 2 Ingredients used resin t Polypropylene polypropylene Melt mass flow rate (g/10min) 8 8 Melting point (°c) 160 160 Spinning conditions Extrusion phase (1st set temperature (°C) 1 Component / 2nd component 200/260 200/260 Spinning twist (dtex) 7.2 12 Extended condition heating device (light heating) Setting temperature (°c) 70 70 Extension ratio 2.6 2.6 Silk denier (dtex) 3.5 3.5 Cutting length (mm) 38 5 Weaving dimension © 3 The length of the circumference (No. 1 component) (%) 90 90 Fiber web heat shrinkage rate (%) 60 - Non-woven fabric property L - Non-woven (processing temperature is set to 98 ° C) Shrinkage large shrinkage large basis weight (g/m2) I - specific volume (cm3/g) — — texture difference

[Industrial Applicability] The conjugate fiber of the present invention is composed of a first component containing an ethylene.α_^ hydrocarbon copolymer having a specific property and a component containing a crystalline propylene 2 component, and has a low-temperature processability and heat shrinkage. The rate is low, ' or loot: the following heat treatment temperature is made of fluffy 47 200934897 ^υζ/^pn.aoc quality = non-woven fabric and molded body with good texture. The present invention is as described above, but it is not intended to limit the knowledge of the material of the present invention, and may be modified and retouched without departing from the silver of the invention. The definition is based on the outline. 1 is a side-by-side cross section showing the conjugate fiber of the present invention. [Description of main component symbols] None. The shape of the book

G 48

Claims (1)

200934897 JU2/spit.a〇c VII. Patent application scope: L A composite fiber which is composed of a ruthenium component containing at least 75 wt% of ethylene. The second component of the polypropylene is formed into a side-by-side cross section, and the conjugate fiber is characterized in that the first component occupies 55 to 90% of the outer circumference of the fiber cross section at right angles to the fiber axis, and the first component and the first component are The boundary line of the second component is curved in a convex shape toward the first component side, and the area ratio (first component/second component) of the second component to the second component is 70/30 to 30/70. Wai. 2. The composite fiber according to claim 1, wherein the ethylene·a-olefinic copolymer has a molecular weight distribution (Mw/Mn) of ι 5 to 2.5, a density of 0.87 to 0.91 g/cm 3 , and is based on ASTM D_1238 The melt index (MI) measured under the conditions of a temperature of 190 ° C and a load of 21.2 N was 10 to 35 g/10 min. 3. The composite fiber according to claim 1 or 2, wherein the heat shrinkage rate after heat treatment at 100 ° C for 5 minutes is less than or equal to 50%. A non-woven fabric which is obtained by subjecting a conjugate fiber according to any one of claims 1 to 3 to a non-woven fabric. 5. The non-woven fabric of claim 4, wherein the non-woven fabric is a hot air bonding method or a hot water bonding method. 6. A molded body, which is obtained by using the conjugate fiber according to any one of claims 1 to 3. 7. A shaped body' obtained by using a non-woven fabric as described in claim 4 or 49 200934897. 50