CN109208180B - Smooth non-woven fabric and preparation method thereof - Google Patents

Smooth non-woven fabric and preparation method thereof Download PDF

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Publication number
CN109208180B
CN109208180B CN201811251462.5A CN201811251462A CN109208180B CN 109208180 B CN109208180 B CN 109208180B CN 201811251462 A CN201811251462 A CN 201811251462A CN 109208180 B CN109208180 B CN 109208180B
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temperature
spinning
woven fabric
raw
auxiliary materials
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CN109208180A (en
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田耀辉
郭振
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Hebei Huarui Non Woven Fabrics Co ltd
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Hebei Huarui Non Woven Fabrics Co ltd
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    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H3/00—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length
    • D04H3/005—Synthetic yarns or filaments
    • D04H3/007—Addition polymers
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
    • D01D13/00—Complete machines for producing artificial threads
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H3/00—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length
    • D04H3/02—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length characterised by the method of forming fleeces or layers, e.g. reorientation of yarns or filaments
    • D04H3/03—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length characterised by the method of forming fleeces or layers, e.g. reorientation of yarns or filaments at random
    • D04H3/033—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length characterised by the method of forming fleeces or layers, e.g. reorientation of yarns or filaments at random reorientation immediately after yarn or filament formation
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H3/00—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length
    • D04H3/08—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length characterised by the method of strengthening or consolidating
    • D04H3/14—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length characterised by the method of strengthening or consolidating with bonds between thermoplastic yarns or filaments produced by welding
    • D—TEXTILES; PAPER
    • D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B2321/00—Fibres made from polymers obtained by reactions only involving carbon-to-carbon unsaturated bonds
    • D10B2321/02—Fibres made from polymers obtained by reactions only involving carbon-to-carbon unsaturated bonds polyolefins
    • D10B2321/022—Fibres made from polymers obtained by reactions only involving carbon-to-carbon unsaturated bonds polyolefins polypropylene

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Nonwoven Fabrics (AREA)
  • Artificial Filaments (AREA)
  • Filtering Materials (AREA)

Abstract

The invention relates to a smooth non-woven fabric and a preparation method thereof, wherein the smooth non-woven fabric comprises the following raw materials in percentage by mass: 85-90% of polypropylene; 8.5-12.5% of an elastomer; 1.0-2.5% of soft master batch; the smooth master batch comprises: 27-38% of polypropylene, 14-25% of an ethylene propylene copolymer, 25-30% of fatty amide derivatives and 12-18% of a slipping agent, the raw materials and auxiliary materials used in the formula have high cooperativity, the softness can be effectively guaranteed, the qualification rate of finished products is improved, the obtained soft non-woven fabric has high softness through verification, the softness is 10.1-11.2 mN according to EDANA WSP 90.3.(05), and the use requirement of the surface fabric of the disposable hygienic product is particularly met.

Description

Smooth non-woven fabric and preparation method thereof
Technical Field
The invention relates to the technical field of non-woven fabric performance improvement, in particular to a smooth non-woven fabric and a preparation method thereof.
Background
With the development of society and the continuous progress of science and technology, the application range of non-woven fabrics is wider and wider, the variety is more and more, and the high requirement on the performance of the non-woven fabrics is higher and higher. As is well known, the materials of the face sheets of products such as sanitary napkins, panty liners, diapers, and diapers among disposable sanitary products are nonwoven fabrics, and the most important index for selecting these sanitary products is softness and comfort, in addition to permeability and absorbency. Therefore, the industry has conducted some studies on how to improve the softness of nonwoven fabrics.
CN106948018A discloses a special additive for silk soft nonwoven fabric or fiber, which comprises a mixture a, wherein the mixture a is composed of the following components in percentage by weight: fatty acid amide 1-99%, mono-or diglycerol fatty acid ester 1-99%, and non-woven fabric containing the above additives. The additive can impart a silky feel to the nonwoven fabric.
CN103132241A discloses a smooth SS non-woven fabric which is mainly prepared from polypropylene, an elastomer, a softening agent and cooling master batches in a weight ratio of 55-90: 5-40: 1-4: 0.5-1. After the formula and the process are adopted, the produced SS non-woven fabric has the softness of less than 1.5g and soft and smooth handfeel like silk, and is very suitable for being used as the fabric of the baby diaper.
CN106192213A discloses a flexible non-woven fabric and a preparation method thereof, wherein the flexible non-woven fabric comprises the following raw materials in parts by weight: 30-35 parts of polypropylene, 20-25 parts of regenerated polypropylene, 30-35 parts of calcium carbonate filling master batch, 10-15 parts of elastomer, 0.2-0.25 part of flexible filling master batch and 1-3 parts of lubricant, and has good flexibility.
CN107523938A discloses a soft non-woven fabric and a soft hydrophilic non-woven fabric, which are formed by hot rolling and consolidation of a soft layer and an adhesive surface layer, wherein the net forming gram weight ratio of the soft layer is more than or equal to 70 percent, and the net forming gram weight ratio of the adhesive surface layer is less than or equal to 30 percent; the adhesive performance of the adhesive surface is improved, the glue application amount is greatly reduced, and the light and thin feeling of a non-woven fabric product is improved.
The above patents CN106948018A and CN103132241A have improved the formulation to obtain a soft and smooth nonwoven fabric with silk feeling, and CN106192213A has improved the softness of the nonwoven fabric by adding silane compounds such as polydimethylsiloxane emulsion. CN107523938A has increased the frivolous sense of product through the mode of bilayer complex, and in the prior art, the flexibility definition and the preparation technology of different producers to the non-woven fabrics are all different, in order to satisfy market demand, widen the non-woven fabrics compliance selection range, the invention aims at providing a gentle non-woven fabrics new formula technology and preparation method.
Disclosure of Invention
The invention aims to overcome the defects in the prior art, provides a smooth non-woven fabric and a preparation method thereof.
In order to achieve the purpose, the technical scheme adopted by the invention is as follows:
the invention provides a soft non-woven fabric which is characterized by comprising the following raw and auxiliary materials in percentage by mass:
88-92% of polypropylene;
5.5-8.5% of an elastomer;
2.5-3.5% of soft master batch;
the smooth master batch comprises: 40-60% of polypropylene, 20-40% of modified EPDM (ethylene-propylene-diene monomer), 4-6% of vinylidene fluoride and hexafluoropropylene copolymer and 10-30% of slip agent.
Further, the material comprises the following raw and auxiliary materials in percentage by mass:
90% of polypropylene;
7% of an elastomer;
3% of soft master batch;
the smooth master batch comprises: 50% of polypropylene, 30% of modified EPDM, 5% of vinylidene fluoride and hexafluoropropylene copolymer and 15% of slip agent.
Further, the modified EPDM is maleic anhydride and triallyl isocyanurate modified EPDM.
Further, the elastomer is a dadmax elastomer 6202.
Further, the slipping agent is selected from any one or combination of erucamide and oleamide.
The invention also provides a preparation method of the soft non-woven fabric, which comprises the following steps:
(1) weighing and mixing: weighing the raw and auxiliary materials according to the mass percentage, putting the raw and auxiliary materials into a stirrer for stirring, and uniformly mixing to obtain a mixture;
(2) melting the screw: conveying the mixture obtained in the step (1) to a screw extruder for melt extrusion to obtain molten slurry;
(3) spinning and lapping: filtering and metering the molten slurry obtained in the step (2), inputting the molten slurry into a spinning box, spinning through a spinneret orifice, cooling and drafting through air flow to form filament fibers, and uniformly adsorbing the filament fibers onto a conveying belt to form a fiber net;
(4) hot-press molding: and (4) hot rolling the fiber web obtained in the step (3) by a hot rolling mill to form a smooth non-woven fabric.
Further, the pressure of the hot rolling mill in the step (4) is 3.6-4.0N, the air suction temperature is 680-720 ℃, the cold air temperature is 580-620 ℃, the upper roll temperature is 134-137 ℃, and the lower roll temperature is 128-131 ℃.
Further, the temperatures of the screw extruder in the step (2) are respectively as follows: the temperature of the first zone is 160-175 ℃, the temperature of the second zone is 180-190 ℃, the temperature of the third zone is 200-210 ℃, the temperature of the fourth zone is 210-220 ℃, the temperature of the fifth zone is 225-235 ℃, and the temperature of the sixth zone is 225-235 ℃.
Further, the temperature of the spinning box in the step (3) is 210-240 ℃, and the side blowing air volume is 700-850 r/minThe temperature of the cross air blow is 5-20 ℃; the suction flow of the monomer during spinning is 3800m3/h。
Further, the temperature of the metering step and the temperature of the filtering step in the step (3) are 210-240 ℃.
The technical scheme provided by the invention has the following beneficial effects:
the elastomer in the formula is a Widamei elastomer 6202 which is an ethylene-propylene copolymer catalyzed by metallocene, the content of ethylene is about 16 percent, and the elastomer can be blended with polypropylene to have better toughening effect on the polypropylene. The smooth master batch disclosed by the invention is prepared from polypropylene, modified EPDM, vinylidene fluoride, hexafluoropropylene copolymer and a slip agent in a scientific and reasonable ratio, the overall flexibility, silkiness, elasticity, toughness and dispersibility are balanced and considered, after the smooth master batch is compounded with an elastomer and polypropylene, higher flexibility and smooth silky thinness are achieved, and the flexibility is between 8.0 and 9.0mN according to an EDANA WSP 90.3.(05) test.
Drawings
FIG. 1 is a graph showing the properties of a nonwoven fabric obtained in example 1 of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in detail and fully with reference to the following embodiments.
Example 1
A smooth non-woven fabric comprises the following raw materials in percentage by mass:
90% of polypropylene;
widamet elastomer 62027%;
3% of soft master batch;
the smooth master batch comprises: polypropylene 50%, maleic anhydride and triallyl isocyanurate modified EPDM30%, vinyl fluoride and hexafluoropropylene copolymer 5% and erucamide 15%.
Is prepared by the following steps:
(1) weighing and mixing: weighing the raw and auxiliary materials according to the mass percentage, putting the raw and auxiliary materials into a stirrer for stirring, firstly mixing the raw and auxiliary materials at the room temperature of 150r/min for 2min, then stirring the raw and auxiliary materials at the rotating speed of 1200r/min for 10min, and uniformly mixing the raw and auxiliary materials to obtain a mixture;
(2) melting the screw: conveying the mixture obtained in the step (1) into a screw extruder, wherein the temperature of the screw extruder is respectively as follows: the first zone temperature is 170 ℃, the second zone temperature is 185 ℃, the third zone temperature is 205 ℃, the fourth zone temperature is 215 ℃, the fifth zone temperature is 230 ℃ and the sixth zone temperature is 230 ℃, and the molten slurry is obtained by melt extrusion.
(3) Spinning and lapping: filtering the molten slurry obtained in the step (2) by a filter with the heating temperature of 220 ℃, metering by a metering pump with the heating temperature of 220 ℃, inputting into a spinning box body, wherein the temperature of the spinning box body is 225 ℃, spinning is carried out through spinning holes, the spinning temperature is 220 ℃, the cross-blown air volume is 800r/min, the cross-blown temperature is 15 ℃, and the suction flow of a monomer during spinning is 3800m3H is used as the reference value. Cooling and drafting by airflow to form filament fibers, and uniformly adsorbing the filament fibers onto a conveying belt to form a fiber web;
(4) hot-press molding: and (4) carrying out hot rolling on the fiber web obtained in the step (3) by a hot rolling mill, wherein the control parameters are as follows: the pressure of the hot rolling mill is 3.8N, the air suction temperature is 700 ℃, the cold air temperature is 600 ℃, the upper roller temperature is 135 ℃, and the lower roller temperature is 130 ℃, so that the smooth non-woven fabric is formed.
Example 2
A smooth non-woven fabric comprises the following raw materials in percentage by mass:
88% of polypropylene;
62028.5% of a Widamet elastomer;
3.5 percent of soft master batch;
the smooth master batch comprises: 40% of polypropylene, 40% of maleic anhydride and triallyl isocyanurate modified EPDM, 6% of vinyl fluoride and hexafluoropropylene copolymer and 14% of oleamide.
Is prepared by the following steps:
(1) weighing and mixing: weighing the raw and auxiliary materials according to the mass percentage, putting the raw and auxiliary materials into a stirrer for stirring, firstly mixing the raw and auxiliary materials at the room temperature of 150r/min for 2min, then stirring the raw and auxiliary materials at the rotating speed of 1000r/min for 10min, and uniformly mixing the raw and auxiliary materials to obtain a mixture;
(2) melting the screw: conveying the mixture obtained in the step (1) into a screw extruder, wherein the temperature of the screw extruder is respectively as follows: the first zone temperature is 165 ℃, the second zone temperature is 180 ℃, the third zone temperature is 200 ℃, the fourth zone temperature is 210 ℃, the fifth zone temperature is 225 ℃ and the sixth zone temperature is 225 ℃, and molten slurry is obtained by melt extrusion.
(3) Spinning and lapping: filtering the molten slurry obtained in the step (2) by a filter with the heating temperature of 210 ℃, metering by a metering pump with the heating temperature of 210 ℃, inputting into a spinning box body, spinning at the temperature of 210 ℃ through spinning holes, wherein the spinning temperature is 210 ℃, the cross-blown air volume is 800r/min, the cross-blown air temperature is 5 ℃, and the suction flow of a monomer during spinning is 3800m3H is used as the reference value. Cooling and drafting by airflow to form filament fibers, and uniformly adsorbing the filament fibers onto a conveying belt to form a fiber web;
(4) hot-press molding: and (4) carrying out hot rolling on the fiber web obtained in the step (3) by a hot rolling mill, wherein the control parameters are as follows: the pressure of the hot rolling mill is 3.7, the air suction temperature is 720 ℃, the cold air temperature is 620 ℃, the upper roller temperature is 136 ℃, and the lower roller temperature is 131 ℃, so that the smooth non-woven fabric is formed.
Example 3
A smooth non-woven fabric comprises the following raw materials in percentage by mass:
92% of polypropylene;
62025.5% of a Widamet elastomer;
2.5 percent of soft master batch;
the smooth master batch comprises: polypropylene 60%, maleic anhydride and triallyl isocyanurate modified EPDM 20%, vinyl fluoride and hexafluoropropylene copolymer 4%, and erucamide 16%.
Is prepared by the following steps:
(1) weighing and mixing: weighing the raw and auxiliary materials according to the mass percentage, putting the raw and auxiliary materials into a stirrer for stirring, firstly mixing the raw and auxiliary materials at the room temperature of 150r/min for 2min, then stirring the raw and auxiliary materials at the rotating speed of 1000r/min for 10min, and uniformly mixing the raw and auxiliary materials to obtain a mixture;
(2) melting the screw: conveying the mixture obtained in the step (1) into a screw extruder, wherein the temperature of the screw extruder is respectively as follows: the first zone temperature is 160 ℃, the second zone temperature is 1810 ℃, the third zone temperature is 205 ℃, the fourth zone temperature is 215 ℃, the fifth zone temperature is 230 ℃ and the sixth zone temperature is 230 ℃, and the molten slurry is obtained by melt extrusion.
(3) Spinning and lapping: filtering the molten slurry obtained in the step (2) by a filter with the heating temperature of 230 ℃, metering by a metering pump with the heating temperature of 230 ℃, inputting into a spinning box body, wherein the temperature of the spinning box body is 230 ℃, spinning by a spinning hole, the spinning temperature is 230 ℃, the cross air flow is 800r/min, the cross air flow is 10 ℃, and the suction flow of a monomer during spinning is 3800m3H is used as the reference value. Cooling and drafting by airflow to form filament fibers, and uniformly adsorbing the filament fibers onto a conveying belt to form a fiber web;
(4) hot-press molding: and (4) carrying out hot rolling on the fiber web obtained in the step (3) by a hot rolling mill, wherein the control parameters are as follows: the pressure of the hot rolling mill is 3.6N, the air suction temperature is 700 ℃, the cold air temperature is 600 ℃, the upper roller temperature is 137 ℃, and the lower roller temperature is 131 ℃, so that the smooth non-woven fabric is formed.
Example 4
A smooth non-woven fabric comprises the following raw materials in percentage by mass:
89% of polypropylene;
widamet elastomer 62028%;
3% of soft master batch;
the smooth master batch comprises: 50% of polypropylene, 35% of maleic anhydride and triallyl isocyanurate modified EPDM, 5% of vinyl fluoride and hexafluoropropylene copolymer and 10% of oleamide.
Is prepared by the following steps:
(1) weighing and mixing: weighing the raw and auxiliary materials according to the mass percentage, putting the raw and auxiliary materials into a stirrer for stirring, firstly mixing the raw and auxiliary materials at the room temperature of 150r/min for 2min, then stirring the raw and auxiliary materials at the rotating speed of 1000r/min for 10min, and uniformly mixing the raw and auxiliary materials to obtain a mixture;
(2) melting the screw: conveying the mixture obtained in the step (1) into a screw extruder, wherein the temperature of the screw extruder is respectively as follows: the first zone temperature is 175 ℃, the second zone temperature is 190 ℃, the third zone temperature is 210 ℃, the fourth zone temperature is 220 ℃, the fifth zone temperature is 235 ℃ and the sixth zone temperature is 235 ℃, and the molten slurry is obtained by melt extrusion.
(3) Spinning and lapping: filtering the molten slurry obtained in the step (2) by a filter with the heating temperature of 240 ℃, metering by a metering pump with the heating temperature of 240 ℃, inputting into a spinning box body, wherein the temperature of the spinning box body is 240 ℃, spinning is carried out through spinning holes, the spinning temperature is 240 ℃, the cross-blown air volume is 850r/min, the cross-blown temperature is 5 ℃, and the suction flow of a monomer during spinning is 3800m3H is used as the reference value. Cooling and drafting by airflow to form filament fibers, and uniformly adsorbing the filament fibers onto a conveying belt to form a fiber web;
(4) hot-press molding: and (4) carrying out hot rolling on the fiber web obtained in the step (3) by a hot rolling mill, wherein the control parameters are as follows: the pressure of the hot rolling mill is 3.9N, the air suction temperature is 680 ℃, the cold air temperature is 580 ℃, the upper roll temperature is 134 ℃, and the lower roll temperature is 129 ℃, so that the smooth non-woven fabric is formed.
Example 5
A smooth non-woven fabric comprises the following raw materials in percentage by mass:
91% of polypropylene;
62026.5% of a Widamet elastomer;
2.5 percent of soft master batch;
the smooth master batch comprises: polypropylene 45%, maleic anhydride and triallyl isocyanurate modified EPDM 20%, vinyl fluoride and hexafluoropropylene copolymer 5%, and erucamide 30%.
Is prepared by the following steps:
(1) weighing and mixing: weighing the raw and auxiliary materials according to the mass percentage, putting the raw and auxiliary materials into a stirrer for stirring, firstly mixing the raw and auxiliary materials at the room temperature of 150r/min for 2min, then stirring the raw and auxiliary materials at the rotating speed of 1000r/min for 10min, and uniformly mixing the raw and auxiliary materials to obtain a mixture;
(2) melting the screw: conveying the mixture obtained in the step (1) into a screw extruder, wherein the temperature of the screw extruder is respectively as follows: the first zone temperature is 170 ℃, the second zone temperature is 185 ℃, the third zone temperature is 210 ℃, the fourth zone temperature is 220 ℃, the fifth zone temperature is 235 ℃, and the sixth zone temperature is 235 ℃, and the molten slurry is obtained by melt extrusion.
(3) Spinning and lapping: heating the molten slurry obtained in the step (2)Filtering with a filter with a temperature of 220 deg.C, metering with a metering pump with a heating temperature of 220 deg.C, feeding into a spinning box with a temperature of 250 deg.C, spinning at 220 deg.C via spinning holes with a side blowing air volume of 700r/min and a side blowing temperature of 10 deg.C, wherein the monomer suction flow rate is 3800m during spinning3H is used as the reference value. Cooling and drafting by airflow to form filament fibers, and uniformly adsorbing the filament fibers onto a conveying belt to form a fiber web;
(4) hot-press molding: and (4) carrying out hot rolling on the fiber web obtained in the step (3) by a hot rolling mill, wherein the control parameters are as follows: the pressure of the hot rolling mill is 4.0N, the air suction temperature is 700 ℃, the cold air temperature is 600 ℃, the upper roller temperature is 134 ℃, and the lower roller temperature is 128 ℃, so that the smooth non-woven fabric is formed.
Effect example 1
The softness of examples 1-5 was measured according to the detection method of EDANA WSP 90.3.(05), and the performance results are shown in table 1:
table 1 softness test results of examples 1-5
Figure 503563DEST_PATH_IMAGE001
The smaller the softness value, the better the softness.
Comparative examples 1 to 1
A smooth non-woven fabric comprises the following raw materials in percentage by mass:
90% of polypropylene;
widamet elastomer 62027%;
3% of soft master batch;
the smooth master batch comprises: polypropylene 50%, EPDM 35% and erucamide 15%.
Is prepared by the following steps:
(1) weighing and mixing: weighing the raw and auxiliary materials according to the mass percentage, putting the raw and auxiliary materials into a stirrer for stirring, firstly mixing the raw and auxiliary materials at the room temperature of 150r/min for 2min, then stirring the raw and auxiliary materials at the rotating speed of 1200r/min for 10min, and uniformly mixing the raw and auxiliary materials to obtain a mixture;
(2) melting the screw: conveying the mixture obtained in the step (1) into a screw extruder, wherein the temperature of the screw extruder is respectively as follows: the first zone temperature is 170 ℃, the second zone temperature is 185 ℃, the third zone temperature is 205 ℃, the fourth zone temperature is 215 ℃, the fifth zone temperature is 230 ℃ and the sixth zone temperature is 230 ℃, and the molten slurry is obtained by melt extrusion.
(3) Spinning and lapping: filtering the molten slurry obtained in the step (2) by a filter with the heating temperature of 220 ℃, metering by a metering pump with the heating temperature of 220 ℃, inputting into a spinning box body, wherein the temperature of the spinning box body is 225 ℃, spinning is carried out through spinning holes, the spinning temperature is 220 ℃, the cross-blown air volume is 800r/min, the cross-blown temperature is 15 ℃, and the suction flow of a monomer during spinning is 3800m3H is used as the reference value. Cooling and drafting by airflow to form filament fibers, and uniformly adsorbing the filament fibers onto a conveying belt to form a fiber web;
(4) hot-press molding: and (4) carrying out hot rolling on the fiber web obtained in the step (3) by a hot rolling mill, wherein the control parameters are as follows: the pressure of the hot rolling mill is 3.8N, the air suction temperature is 700 ℃, the cold air temperature is 600 ℃, the upper roller temperature is 135 ℃, and the lower roller temperature is 130 ℃, so that the smooth non-woven fabric is formed.
Comparative examples 1 to 2
A smooth non-woven fabric comprises the following raw materials in percentage by mass:
90% of polypropylene;
widamet elastomer 62027%;
3% of soft master batch;
the smooth master batch comprises: polypropylene 50%, maleic anhydride and triallyl isocyanurate modified EPDM 35% and erucamide 15%.
Is prepared by the following steps:
(1) weighing and mixing: weighing the raw and auxiliary materials according to the mass percentage, putting the raw and auxiliary materials into a stirrer for stirring, firstly mixing the raw and auxiliary materials at the room temperature of 150r/min for 2min, then stirring the raw and auxiliary materials at the rotating speed of 1200r/min for 10min, and uniformly mixing the raw and auxiliary materials to obtain a mixture;
(2) melting the screw: conveying the mixture obtained in the step (1) into a screw extruder, wherein the temperature of the screw extruder is respectively as follows: the first zone temperature is 170 ℃, the second zone temperature is 185 ℃, the third zone temperature is 205 ℃, the fourth zone temperature is 215 ℃, the fifth zone temperature is 230 ℃ and the sixth zone temperature is 230 ℃, and the molten slurry is obtained by melt extrusion.
(3) Spinning and lapping: filtering the molten slurry obtained in the step (2) by a filter with the heating temperature of 220 ℃, metering by a metering pump with the heating temperature of 220 ℃, inputting into a spinning box body, wherein the temperature of the spinning box body is 225 ℃, spinning is carried out through spinning holes, the spinning temperature is 220 ℃, the cross-blown air volume is 800r/min, the cross-blown temperature is 15 ℃, and the suction flow of a monomer during spinning is 3800m3H is used as the reference value. Cooling and drafting by airflow to form filament fibers, and uniformly adsorbing the filament fibers onto a conveying belt to form a fiber web;
(4) hot-press molding: and (4) carrying out hot rolling on the fiber web obtained in the step (3) by a hot rolling mill, wherein the control parameters are as follows: the pressure of the hot rolling mill is 3.8N, the air suction temperature is 700 ℃, the cold air temperature is 600 ℃, the upper roller temperature is 135 ℃, and the lower roller temperature is 130 ℃, so that the smooth non-woven fabric is formed.
Comparative examples 1 to 3
A smooth non-woven fabric comprises the following raw materials in percentage by mass:
90% of polypropylene;
widamet elastomer 62027%;
3% of soft master batch;
the smooth master batch comprises: 50% of polypropylene, 35% of vinyl fluoride and hexafluoropropylene copolymer and 15% of erucamide.
Is prepared by the following steps:
(1) weighing and mixing: weighing the raw and auxiliary materials according to the mass percentage, putting the raw and auxiliary materials into a stirrer for stirring, firstly mixing the raw and auxiliary materials at the room temperature of 150r/min for 2min, then stirring the raw and auxiliary materials at the rotating speed of 1200r/min for 10min, and uniformly mixing the raw and auxiliary materials to obtain a mixture;
(2) melting the screw: conveying the mixture obtained in the step (1) into a screw extruder, wherein the temperature of the screw extruder is respectively as follows: the first zone temperature is 170 ℃, the second zone temperature is 185 ℃, the third zone temperature is 205 ℃, the fourth zone temperature is 215 ℃, the fifth zone temperature is 230 ℃ and the sixth zone temperature is 230 ℃, and the molten slurry is obtained by melt extrusion.
(3) Spinning and lapping: passing the molten slurry obtained in the step (2) throughFiltering with a filter with a heating temperature of 220 deg.C, metering with a metering pump with a heating temperature of 220 deg.C, feeding into a spinning box with a temperature of 225 deg.C, spinning via spinning holes at a spinning temperature of 220 deg.C, a cross-blow air volume of 800r/min and a cross-blow temperature of 15 deg.C, and a monomer suction flow rate of 3800m during spinning3H is used as the reference value. Cooling and drafting by airflow to form filament fibers, and uniformly adsorbing the filament fibers onto a conveying belt to form a fiber web;
(4) hot-press molding: and (4) carrying out hot rolling on the fiber web obtained in the step (3) by a hot rolling mill, wherein the control parameters are as follows: the pressure of the hot rolling mill is 3.8N, the air suction temperature is 700 ℃, the cold air temperature is 600 ℃, the upper roller temperature is 135 ℃, and the lower roller temperature is 130 ℃, so that the smooth non-woven fabric is formed.
Comparative examples 1 to 4
A smooth non-woven fabric comprises the following raw materials in percentage by mass:
90% of polypropylene;
widamet elastomer 62027%;
3% of soft master batch;
the smooth master batch comprises: 50% of polypropylene, 25% of maleic anhydride and triallyl isocyanurate modified EPDM, 10% of vinyl fluoride and hexafluoropropylene copolymer and 15% of erucamide.
Is prepared by the following steps:
(1) weighing and mixing: weighing the raw and auxiliary materials according to the mass percentage, putting the raw and auxiliary materials into a stirrer for stirring, firstly mixing the raw and auxiliary materials at the room temperature of 150r/min for 2min, then stirring the raw and auxiliary materials at the rotating speed of 1200r/min for 10min, and uniformly mixing the raw and auxiliary materials to obtain a mixture;
(2) melting the screw: conveying the mixture obtained in the step (1) into a screw extruder, wherein the temperature of the screw extruder is respectively as follows: the first zone temperature is 170 ℃, the second zone temperature is 185 ℃, the third zone temperature is 205 ℃, the fourth zone temperature is 215 ℃, the fifth zone temperature is 230 ℃ and the sixth zone temperature is 230 ℃, and the molten slurry is obtained by melt extrusion.
(3) Spinning and lapping: filtering the molten slurry obtained in the step (2) by a filter with the heating temperature of 220 ℃, metering by a metering pump with the heating temperature of 220 ℃, inputting into a spinning box body, and spinningThe temperature of a filament box body is 225 ℃, spinning is carried out through a spinning hole, the spinning temperature is 220 ℃, the side blowing air volume is 800r/min, the side blowing temperature is 15 ℃, and the monomer suction flow during spinning is 3800m3H is used as the reference value. Cooling and drafting by airflow to form filament fibers, and uniformly adsorbing the filament fibers onto a conveying belt to form a fiber web;
(4) hot-press molding: and (4) carrying out hot rolling on the fiber web obtained in the step (3) by a hot rolling mill, wherein the control parameters are as follows: the pressure of the hot rolling mill is 3.8N, the air suction temperature is 700 ℃, the cold air temperature is 600 ℃, the upper roller temperature is 135 ℃, and the lower roller temperature is 130 ℃, so that the smooth non-woven fabric is formed.
Comparative examples 1 to 5
A smooth non-woven fabric comprises the following raw materials in percentage by mass:
90% of polypropylene;
widamet elastomer 62027%;
3% of soft master batch;
the smooth master batch comprises: 50% of polypropylene, 30% of EPDM (ethylene-propylene-diene monomer), 5% of vinyl fluoride and hexafluoropropylene copolymer and 15% of erucamide.
Is prepared by the following steps:
(1) weighing and mixing: weighing the raw and auxiliary materials according to the mass percentage, putting the raw and auxiliary materials into a stirrer for stirring, firstly mixing the raw and auxiliary materials at the room temperature of 150r/min for 2min, then stirring the raw and auxiliary materials at the rotating speed of 1200r/min for 10min, and uniformly mixing the raw and auxiliary materials to obtain a mixture;
(2) melting the screw: conveying the mixture obtained in the step (1) into a screw extruder, wherein the temperature of the screw extruder is respectively as follows: the first zone temperature is 170 ℃, the second zone temperature is 185 ℃, the third zone temperature is 205 ℃, the fourth zone temperature is 215 ℃, the fifth zone temperature is 230 ℃ and the sixth zone temperature is 230 ℃, and the molten slurry is obtained by melt extrusion.
(3) Spinning and lapping: filtering the molten slurry obtained in the step (2) by a filter with the heating temperature of 220 ℃, metering by a metering pump with the heating temperature of 220 ℃, inputting into a spinning box body, wherein the temperature of the spinning box body is 225 ℃, spinning is carried out through spinning holes, the spinning temperature is 220 ℃, the cross-blown air volume is 800r/min, the cross-blown temperature is 15 ℃, and the suction flow of a monomer during spinning is 3800m3H is used as the reference value. Cooling and drafting by airflow to form filament fibers, and uniformly adsorbing the filament fibers onto a conveying belt to form a fiber web;
(4) hot-press molding: and (4) carrying out hot rolling on the fiber web obtained in the step (3) by a hot rolling mill, wherein the control parameters are as follows: the pressure of the hot rolling mill is 3.8N, the air suction temperature is 700 ℃, the cold air temperature is 600 ℃, the upper roller temperature is 135 ℃, and the lower roller temperature is 130 ℃, so that the smooth non-woven fabric is formed.
Comparative examples 1 to 6
A smooth non-woven fabric comprises the following raw materials in percentage by mass:
90% of polypropylene;
widamet elastomer 62027%;
3% of soft master batch;
the smooth master batch comprises: polypropylene 50%, maleic anhydride and triallyl isocyanurate modified EPDM30%, EPDM5% and erucamide 15%.
Is prepared by the following steps:
(1) weighing and mixing: weighing the raw and auxiliary materials according to the mass percentage, putting the raw and auxiliary materials into a stirrer for stirring, firstly mixing the raw and auxiliary materials at the room temperature of 150r/min for 2min, then stirring the raw and auxiliary materials at the rotating speed of 1200r/min for 10min, and uniformly mixing the raw and auxiliary materials to obtain a mixture;
(2) melting the screw: conveying the mixture obtained in the step (1) into a screw extruder, wherein the temperature of the screw extruder is respectively as follows: the first zone temperature is 170 ℃, the second zone temperature is 185 ℃, the third zone temperature is 205 ℃, the fourth zone temperature is 215 ℃, the fifth zone temperature is 230 ℃ and the sixth zone temperature is 230 ℃, and the molten slurry is obtained by melt extrusion.
(3) Spinning and lapping: filtering the molten slurry obtained in the step (2) by a filter with the heating temperature of 220 ℃, metering by a metering pump with the heating temperature of 220 ℃, inputting into a spinning box body, wherein the temperature of the spinning box body is 225 ℃, spinning is carried out through spinning holes, the spinning temperature is 220 ℃, the cross-blown air volume is 800r/min, the cross-blown temperature is 15 ℃, and the suction flow of a monomer during spinning is 3800m3H is used as the reference value. Cooling and drafting by airflow to form filament fibers, and uniformly adsorbing the filament fibers onto a conveying belt to form a fiber web;
(4) hot-press molding: and (4) carrying out hot rolling on the fiber web obtained in the step (3) by a hot rolling mill, wherein the control parameters are as follows: the pressure of the hot rolling mill is 3.8N, the air suction temperature is 700 ℃, the cold air temperature is 600 ℃, the upper roller temperature is 135 ℃, and the lower roller temperature is 130 ℃, so that the smooth non-woven fabric is formed.
Effect example 2
The softness of comparative examples 1-1 to 1-6 was tested according to the test method of EDANA WSP 90.3.(05), and the performance results are shown in table 2:
TABLE 2 softness test results for comparative examples 1-1 to comparative examples 1-6
Figure 548879DEST_PATH_IMAGE002
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.

Claims (7)

1. The soft non-woven fabric is characterized by comprising the following raw and auxiliary materials in percentage by mass:
88-92% of polypropylene;
5.5-8.5% of an elastomer;
2.5-3.5% of soft master batch;
the smooth master batch comprises: 40-60% of polypropylene, 20-40% of modified EPDM (ethylene-propylene-diene monomer), 4-6% of vinylidene fluoride and hexafluoropropylene copolymer and 10-30% of slip agent;
the modified EPDM is maleic anhydride and triallyl isocyanurate modified EPDM;
the elastomer is a dadmax elastomer 6202;
the slipping agent is selected from any one or combination of erucamide and oleamide;
it is prepared by the following method:
(1) weighing and mixing: weighing the raw and auxiliary materials according to the mass percentage, putting the raw and auxiliary materials into a stirrer for stirring, and uniformly mixing to obtain a mixture;
(2) melting the screw: conveying the mixture obtained in the step (1) to a screw extruder for melt extrusion to obtain molten slurry;
(3) spinning and lapping: filtering and metering the molten slurry obtained in the step (2), inputting the molten slurry into a spinning box, spinning through a spinneret orifice, cooling and drafting through air flow to form filament fibers, and uniformly adsorbing the filament fibers onto a conveying belt to form a fiber net;
(4) hot-press molding: and (4) hot rolling the fiber web obtained in the step (3) by a hot rolling mill to form a smooth non-woven fabric, wherein the pressure of the hot rolling mill is 3.6-4.0N, the air suction temperature is 680-720 ℃, the cold air temperature is 580-620 ℃, the upper roller temperature is 134-137 ℃, and the lower roller temperature is 128-131 ℃.
2. The soft non-woven fabric according to claim 1, which comprises the following raw and auxiliary materials in percentage by mass:
90% of polypropylene;
7% of an elastomer;
3% of soft master batch;
the smooth master batch comprises: 50% of polypropylene, 30% of modified EPDM (ethylene-propylene-diene monomer), 5% of vinylidene fluoride and hexafluoropropylene copolymer and 15% of slip agent.
3. A method of preparing a compliant nonwoven fabric according to claim 1 or 2, comprising the steps of:
(1) weighing and mixing: weighing the raw and auxiliary materials according to the mass percentage, putting the raw and auxiliary materials into a stirrer for stirring, and uniformly mixing to obtain a mixture;
(2) melting the screw: conveying the mixture obtained in the step (1) to a screw extruder for melt extrusion to obtain molten slurry;
(3) spinning and lapping: filtering and metering the molten slurry obtained in the step (2), inputting the molten slurry into a spinning box, spinning through a spinneret orifice, cooling and drafting through air flow to form filament fibers, and uniformly adsorbing the filament fibers onto a conveying belt to form a fiber net;
(4) hot-press molding: and (4) hot rolling the fiber web obtained in the step (3) by a hot rolling mill to form a smooth non-woven fabric.
4. The method for preparing a smooth non-woven fabric according to claim 3, wherein the pressure of the hot rolling mill in the step (4) is 3.6-4.0N, the air suction temperature is 680-720 ℃, the cold air temperature is 580-620 ℃, the upper roll temperature is 134-137 ℃, and the lower roll temperature is 128-131 ℃.
5. The method for preparing a compliant nonwoven fabric according to claim 3, wherein the temperatures of the screw extruder in step (2) are respectively: the temperature of the first zone is 160-175 ℃, the temperature of the second zone is 180-190 ℃, the temperature of the third zone is 200-210 ℃, the temperature of the fourth zone is 210-220 ℃, the temperature of the fifth zone is 225-235 ℃, and the temperature of the sixth zone is 225-235 ℃.
6. The preparation method of the smooth non-woven fabric according to claim 3, wherein the temperature of the spinning box in the step (3) is 210-240 ℃, the air volume of the cross air blowing is 700-850 r/min, and the temperature of the cross air blowing is 5-20 ℃; the suction flow of the monomer during spinning is 3800m3/h。
7. The method for preparing a soft nonwoven fabric according to claim 3, wherein the temperatures of the metering and filtering steps in step (3) are 210 to 240 ℃.
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