JP5097481B2 - Tape-type diaper with elastic fastening tape - Google Patents

Description

  The present invention relates to a tape-type diaper provided with an elastic fastening tape for fixing a front body and a back body of a diaper according to a wearer's body shape.

  In general, a tape-type diaper is composed of the front body 2, the crotch 4, and the back body 6, for example, like a tape-type diaper 100 shown in FIG. 2, and covers the absorbent body 22 and the surface of the absorbent body 22. A top sheet 18 made of a liquid-permeable material, a back sheet 20 made of a liquid-impermeable material, and a back sheet 20 made of a liquid-impermeable material. It is a disposable diaper that is arranged so as to extend from the left and right side edges 6a, 6b, and includes a fastening tape 10 for fixing the front body 2 and the back body 6 (for example, Patent Documents 1 and 2). reference).

  According to such a tape-type diaper 100, the excrement of the wearer passes through the liquid-permeable portion of the top sheet 18 (the center sheet 18a in the figure) and is absorbed by the absorber 22, and usually the liquid Leakage to the outside is prevented by the back sheet 20 made of an impermeable material, and excrement can be held inside the diaper. Further, by fixing the front body 2 and the back body 6 of the diaper to each other with the fastening tape 10, there is also an advantage that the wearer can easily put on the diaper.

  In recent years, a tape-type diaper having a stretchable fastening tape (stretchable fastening tape) has been proposed (see, for example, Patent Document 3). This tape-type diaper is obtained by giving stretchability to the fastening tape by using a stretchable material as the base material of the fastening tape, and has the effect of making it easier for the wearer to fit the diaper. is there.

JP 2004-141532 A JP 2004-24307 A Japanese Patent No. 3590069

  However, the tape-type diaper has a problem that the elastic fastening tape is easily broken when the diaper is worn or used, and still leaves room for improvement.

  As described above, at present, no measures for effectively preventing the tearing of the elastic fastening tape at the time of wearing or using the diaper have been disclosed yet, and such a measure is eagerly desired.

  The present invention has been made to solve the above-described problems of the prior art, and provides a tape-type diaper that can effectively prevent tearing of the elastic fastening tape when the diaper is worn or used. Is.

As a result of intensive studies to solve the problems of the prior art as described above, the present inventor (1) the base material constituting the elastic fastening tape is formed by a non-elastic sheet made of a non-elastic nonwoven fabric. in the first non-stretchable regions, stretchable region being formed by a stretch sheet made of stretchable nonwoven fabric and non-elastic in the second non-stretchable region are sequentially formed substrate formed by the non-stretchable sheet made of nonwoven fabric (2) The base material is joined to the end of the non-stretchable sheet that forms the first non-stretchable region, and the stretchable sheet that forms the stretchable region is joined to the end of the stretchable sheet. The non-stretchable sheet forming the second non-stretchable region is a base material joined together, (3) the stretchable fastening tape, the end of the base on the second non-stretchable region side is the tip, The end of the base on the first non-stretchable region side As end, joining the first portion of the non-stretchable region of the substrate with respect to the diaper, and (4) the time of this joining, the elastic region and the first non-stretchable region of the substrate constituting the stretchable fastening tape The boundary of the diaper is not located inside the side edge of the diaper, but outside the side edge of the diaper (that is, the boundary is arranged outside the diaper and spaced apart from the side edge of the diaper). ), The above-mentioned problem is solved, and the present invention has been completed. Specifically, the following tape type diaper is provided by the present invention.

[1] The front body, the crotch part, and the back body, each of which is composed of an absorbent body, a top sheet that is arranged so as to cover the surface of the absorbent body, and at least part of which is made of a liquid-permeable material, and the absorbent body A back sheet made of a liquid-impermeable material and arranged to extend from the left and right side edges of the back body, fixing the front body and the back body. A non-stretchable tape comprising: a base material; and a fastener member attached to a surface of the base material, wherein the base material is made of a non-stretchable nonwoven fabric. A first non-stretchable region formed by a sheet, a stretchable region formed by a stretchable sheet made of a stretchable nonwoven fabric, and a second non-stretchable region formed by a non-stretchable sheet made of a non-stretchable nonwoven fabric are sequentially formed , And the first non- The stretchable sheet forming the stretchable region is joined so as to be continuous with the end of the non-stretchable sheet forming the stretchable region, and the second non-stretchable region is formed so as to be continuous with the end of the stretchable sheet The stretchable fastening tape is a base material to which the non-stretchable sheets are joined , and the stretchable fastening tape has an end on the second non-stretchable region side of the base, With the end on the first non-stretchable region side as a terminal, the boundary between the stretchable region and the first non-stretchable region of the base material is disposed outside the left and right side edges of the back body. The tape-type diaper joined to the left and right side edges of the back body at the first non-stretchable region of the base material.

[2] In the stretchable fastening tape, the boundary between the first non-stretchable region and the stretchable region of the base material is disposed 20 to 80 mm outside the left and right side edges of the back body. And the tape-type diaper as described in said [1] joined to each side edge of the right and left of the said back body.

[3] In the stretchable fastening tape, a boundary between the first non-stretchable region and the stretchable region of the base material is disposed on the outer side of the left and right sides of the back body by 30 to 50 mm. And the tape type diaper as described in said [2] joined to each side edge of the said back body right and left.

[4] The tape-type diaper according to any one of [1] to [3], wherein two each of the stretchable fastening tapes are arranged on each of the left and right side edges of the back body.

[5] The tape-type diaper according to [4], wherein two stretchable fastening tapes are arranged at intervals of 20 to 150 mm on left and right side edges of the back body.

  The tape-type diaper of the present invention can effectively prevent tearing when the stretchable fastening tape is stretched.

  Hereinafter, the best mode for carrying out the tape-type diaper of the present invention will be described in detail with reference to the drawings by referring to the example of the tape-type diaper 1 shown in FIGS. 1, 3A and 3B. However, the present invention broadly encompasses tape-type diapers having the invention-specific matters, and is not limited to the following embodiments.

[1] Tape-type diapers:
The tape-type diaper of the present invention has a base tape 48 and a fastener member 44 attached to the surface of the base material 48, for example, like the tape-type diaper 1 shown in FIG. The base material 48 includes a first non-stretchable region 34 formed by a non-stretchable sheet 56 made of a non-stretchable non- woven fabric, a stretchable region 32 formed by a stretchable sheet 62 made of a stretchable non-woven fabric, and a non-stretchable non-woven fabric. The second non-stretchable region 30 formed by the non-stretchable sheet 60 is formed sequentially , and the stretchable region 32 is formed so as to be continuous with the end of the non-stretchable sheet 56 forming the first non-stretchable region 34. stretch sheet 62 is seamed, a second stretchable fastening tape 28 is non-stretchable region 30 substrate non stretchable sheet 60 is seamed to form a so as to continue to the end of the stretch sheet 62 Te Is a flop type diapers. The stretchable fastening tape 28 has the end on the second non-stretchable region 30 side of the base material 48 as the front end and the end on the first non-stretchable region 34 side of the base material 48 as the end. In the state where the boundary 52 between the region 32 and the first non-stretchable region 34 is disposed outside the left and right side edges 6a, 6b of the back body 6, the back of the first non-stretchable region 34 of the base 48 It is a tape-type diaper joined to the left and right side edges 6a, 6b of the body 6.

  In the present specification, the “tape-type diaper” includes, for example, each part of the front body 2, the crotch part 4 and the back body 6, like the tape-type diaper 1 shown in FIG. The top sheet 18 is disposed so as to cover the surface of the absorber 22 and at least a part is made of a liquid permeable material, and the back sheet is disposed so as to cover the back surface of the absorber 22 and is made of a liquid impermeable material. 20 and a disposable diaper that is disposed so as to extend from the left and right side edges 6a and 6b of the back body 6 and includes a fastening tape 10 for fixing the front body 2 and the back body 6. Shall.

  In addition, in this specification, “front body” means a part that covers the abdomen (front of the body) of the wearer when a diaper is worn on the wearer, and “inseam” means that the wearer wears a diaper. When the wearer wears a diaper, the part covering the inseam of the wearer means the part covering the back side (back of the body) of the wearer.

[1-1] Fastening tape:
The “fastening tape” is a tape-like member having a base material and a fastener member attached to the surface of the base material. This fastening tape is arranged so as to extend from the left and right side edges of the back of the diaper. The fastening member attached to the base material is fastened to the front of the diaper and the front of the diaper. It is configured so that the back and the back can be fixed. By the operation as described above, the entire diaper becomes a pants type, and the diaper can be attached to the wearer.

  For example, in the tape-type diaper 1 shown in FIG. 1, the fastening tape 10 is arranged so as to extend from the left and right side edges 6a and 6b of the back body 6 (more specifically, the side flap 8) of the diaper. ing. A hook material 44 a of a mechanical fastener is attached as a fastener member 44 to the surface of the base material 48. On the other hand, a front patch 12 made of a fastener member 44 (more specifically, a loop material 44b of a mechanical fastener) is also disposed on the front body 2 of the diaper. In the case of a diaper having such a configuration, the front body 2 and the back body 6 of the diaper are fixed by fastening the hook member 44a of the fastening tape 10 to the loop member 44b disposed on the front body 2. It is possible. FIG. 6 is a diagram illustrating a usage state of the tape-type diaper 1 illustrated in FIG. 1, and illustrates a state where the tape-type diaper 1 is attached to the wearer using the fastening tape 10.

  The “fastener member” may be an adhesive fastener or a mechanical fastener, but is preferably a mechanical fastener. The mechanical fastener is a fastener that performs fastening by mechanical coupling between a “hook material” that is a convex member and a “loop material” that is a concave material. In this fastener, the hook material is superimposed on the surface of the loop material, and a large number of protrusions of the hook material are engaged with the surface of the loop material, so that both members can be peeled and firmly fixed. it can.

  As the “hook material”, for example, a material having a large number of protrusions (such as a bowl shape, a mushroom shape, a bowl shape) formed on the surface thereof is used. On the other hand, as the “loop material”, a material having loop-like fibers arranged on the surface is often used. However, when the diaper is made of a nonwoven fabric, the nonwoven fabric (that is, the diaper itself) can be used as a loop material.

  The tape-type diaper of the present invention includes a stretchable fastening tape as a fastening tape. The “stretchable fastening tape” means a fastening tape having stretchability, and usually stretchability is imparted by forming all or part of the base material with a stretchable material. For example, in the stretchable fastening tape 28 shown in FIGS. 1, 3A and 3B, a part of the base material 48 is constituted by a stretchable sheet 62 which is a stretchable material, and the stretchable sheet 62 has stretchability. It has been granted.

  In the stretchable fastening tape of the tape-type diaper of the present invention, a first non-stretchable region, a stretchable region, and a second non-stretchable region are sequentially formed on a base material. And it arrange | positions so that the edge part by the side of the 2nd non-stretching area side of a base material may become a tip, and the edge part by the side of the 1st non-stretching area side of a substrate may be made into a terminal. As will be described later, the non-stretchable region (specifically, the first non-stretchable region), not the stretchable region of the base material, is joined to the diaper so that it can be stretched when the diaper is worn or used. It is possible to effectively prevent the tape from being broken.

For example, the elastic fastening tape 28 shown in FIGS. 1, 3A and 3B includes a first non-stretchable region 34 formed by a non-stretchable sheet 56 and a stretchable region 32 formed by a stretchable sheet 62 on a base 48. And the second non-stretchable region 30 formed by the non-stretchable sheet 60 are sequentially formed, the end of the base 48 on the second non-stretchable region 30 side is the tip, and the end of the base 48 on the first non-stretchable region 34 side It arrange | positions so that a part may be made into the terminal. And the part of the 1st non-expanding-contraction area | region 34 of the base material 48 is joined to the part of the side flap 8 of a diaper.

  In the tape-type diaper of the present invention, the stretchable fastening tape is a base with the boundary between the stretchable region and the first non-stretchable region of the base material disposed outside the left and right side edges of the back body. The first non-stretchable region of the material is joined to the left and right side edges of the back body. That is, the boundary between the first non-stretchable region and the stretchable region of the base material and the side edge of the diaper are spaced apart. By setting it as such a structure, the force which acts at the time of extending | stretching a stretchable fastening tape is the boundary of the 1st non-stretch area | region of a base material and an expansion-contraction area | region, and the junction part of a base material and a diaper. Since it acts in a distributed manner at two points, it becomes possible to effectively prevent tearing of the elastic fastening tape when the diaper is worn or used.

  As shown in FIGS. 4A and 4B, when an oblique force F acts on the stretchable fastening tape 28, the force F (1) stretches and deforms with the stretchable region 32 that is free to stretch and deform. It is considered to act in a distributed manner at two points of the boundary 52 with the first non-stretchable region 34 which is difficult and (2) the joint portion (such as the side edge of the diaper) between the stretchable fastening tape 28 and the diaper.

  4A and 4B are schematic views showing a state in which the stretching force F acts on the stretchable fastening tape 28 shown in FIGS. 1, 3A, and 3B. In a tape-type diaper, especially a tape-type diaper in which two elastic fastening tapes are placed on the left and right side edges of the back of the diaper, the opening around the waist or the opening around the leg fits For the purpose of improving the performance and preventing leakage from these openings, as shown in FIG. 6, the fastening tape 10 is pulled up (or pulled down) in an oblique direction rather than in a horizontal direction, so that the front body 2 In many cases, it is fixed.

  As shown in FIGS. 4A and 4B, when an oblique force F acts on the stretchable fastening tape 28, the force F (1) stretches and deforms with the stretchable region 32 that is free to stretch and deform. It is considered to act in a distributed manner at two points A1 of the boundary 52 with the difficult first non-stretchable region 34 and (2) a joint portion A2 (such as a side edge of the diaper) between the stretchable fastening tape 28 and the diaper. It is done. Therefore, the force F does not concentrate on one point of the elastic fastening tape 28, and it becomes possible to effectively prevent the elastic fastening tape from being broken when the diaper is worn or used.

  On the other hand, FIG. 5A and FIG. 5B are the figures which showed the elastic fastening tape in the conventional tape type diaper. In this stretchable fastening tape, the first non-stretchable region 34 is not formed on the tape end side of the substrate 48, and the stretchable region 32 portion of the substrate 48 is joined to the side flap 8 portion of the diaper. Yes. When a force F in an oblique direction is applied to such a stretchable fastening tape, the force F is 1 of the joint portion A3 (such as a side edge of the diaper) between the stretchable fastening tape 28 and the diaper. It is thought that it acts on the point. Therefore, it can be said that the elastic fastening tape is easily broken when the diaper is worn or used.

  In addition, the elastic fastening tape 28 in which the first non-stretchable region 34, the stretchable region 32, and the second non-stretchable region 30 are sequentially formed on the base material 48 as shown in FIGS. 1, 3A, and 3B was used. Even in this case, the effect of the present invention may not be obtained depending on the manner of joining to the diaper. For example, in a state where the boundary 52 between the stretchable region 32 and the first non-stretchable region 34 of the base material 48 is arranged so as to coincide with the left and right side edges 6a, 6b of the back body 6, or the boundary 52 is This is the case where the elastic fastening tape is joined to the diaper in a state of being arranged inside the left and right side edges 6a, 6b of the body 6. In such a case, similarly to the case shown in FIGS. 5A and 5B, the force is considered to be concentrated on one point of the joint portion (such as a side edge portion of the diaper) between the elastic fastening tape and the diaper. Therefore, it can be said that the elastic fastening tape is easily broken when the diaper is worn or used.

  The stretchable fastening tape is configured such that the boundary between the non-stretchable region and the stretchable region of the base material is disposed 20 to 80 mm outside the left and right side edges of the backbody. It is preferable to be joined to each of the left and right side edges.

  By placing the boundary outside the side edge of the back body by 20 mm or more, force acts and (1) the boundary portion, and (2) the joint between the elastic fastening tape and the diaper, The distance between the two becomes wider and the force is more dispersed. Accordingly, it is possible to more effectively prevent the elastic fastening tape from being broken when the diaper is worn or used. On the other hand, by setting it to 80 mm or less, the stretching stress acting on the stretchable fastening tape can be reliably transmitted to the diaper. In order to exhibit these effects more reliably, the elastic fastening tape has the boundary disposed 30 to 50 mm outside the left and right side edges of the back body, and the left and right sides of the back body. It is preferable to be joined to each side edge.

  In addition, it is preferable that the stretchable fastening tape in the tape-type diaper of the present invention is provided with a hook material of a mechanical fastener in the second non-stretchable region. For example, in the stretchable fastening tape 28 shown in FIGS. 1, 3A and 3B, a first non-stretchable region 34, a stretchable region 32 and a second non-stretchable region 30 are sequentially formed from the end side of the tape. A hook material 44 a of a mechanical fastener that is a fastener member 44 is attached to the second non-stretchable region 30. Such a configuration causes the hook material 44a to fall off the surface of the base material 48 due to repeated expansion and contraction of the base material 48, as compared with the case where the hook material is attached to the elastic region where the elastic deformation is free. It is possible to effectively prevent the inconvenience.

  The first non-stretchable region or the second non-stretchable region can be formed using a non-stretchable material. Non-stretchable materials include spunbond, SMS (spunbond / meltblown / spunbond), SMMS (spunbond / meltblown / meltblown / spunbond), card embossed, resin-bonded sheet materials such as resin bonds, stretch Alternatively, an unstretched film material or the like can be used. In consideration of strength, it is preferable to use a sheet material made of a spunbonded nonwoven fabric or the film material. For example, the elastic fastening tape 28 shown in FIGS. 1, 3A and 3B is an example in which the second non-stretchable region 30 is formed by a sheet material (non-stretchable sheet 60) made of a non-stretchable nonwoven fabric.

  Examples of the constituent material of the nonwoven fabric include synthetic fibers made of polyolefin (polyethylene, polypropylene, etc.), polyester, aliphatic polyamide (so-called nylon), and other thermoplastic resins. In this case, the synthetic fiber may be a single fiber or a composite fiber having a core-sheath structure or the like. In general, when a single fiber is used, polyolefin is often used, but it is also preferable to use polyester in consideration of strength.

  Moreover, the laminated body which laminated | stacked the some nonwoven fabric and / or a film can also be used as a non-stretchable raw material. At this time, when a non-woven fabric or a loop material that is easily engaged with the hook material is disposed on the surface opposite to the surface on which the hook material is disposed, the fastening tape 10 is further disposed on the fastening tape 10 as shown in FIG. Are preferable because they can be fixed in layers. In addition, there is an advantage that the hook material can be fixed in a state where the fastening tape is folded when the diaper is packaged (see the fastening tape 10 on the right side of FIG. 1).

Basis weight of the nonwoven fabric constituting the first non-stretchable region or the second non-stretchable region is preferably set to 30 to 120 g / ^{m 2,} and more preferably be a 40 and 80 g / ^{m 2.} If the basis weight is less than 30 g / m ² , the strength of the fastening tape may be insufficient. In addition, there is no stiffness in the fastening tape, and when the fastening tape is fastened or removed, it cannot be kept overhanging to the side of the diaper (it hangs down on the diaper). It may be inconvenient. Furthermore, in the 2nd expansion-contraction area | region, there is no stiffness in the part which picks up a fastening tape, and it may become difficult to pick. On the other hand, when the basis weight is larger than 120 g / m ² , the non-stretchable region is not flexible, and the tape-applied portion is likely to be uncomfortable when the diaper is worn, which may deteriorate the wearing feeling.

  On the other hand, the stretchable region can be formed using a stretchable material. As the stretchable material, an elastic nonwoven fabric, an elastomer spunbond nonwoven fabric, or the like can be used. More specifically, Straflex (made by Idemitsu Unitech Co., Ltd.), Espancione (made by Kanebo Co., Ltd.), Elax (made by GPF Co., Ltd.) and the like can be suitably used under the trade names below.

Basis weight of the stretchable material forming the stretchable area, it is preferable that the 70~150g / ^{m 2.} When the weight per unit area is less than 70 g / m ² , the strength of the tape may be insufficient, and the stiffness of the tape is lost, so that handling of the fastening tape becomes difficult. On the other hand, if the basis weight is larger than 150 g / m ² , the tape becomes hard and the wearing feeling tends to deteriorate.

  Further, as the stretchable material constituting the stretchable region, it is preferable to use a material having a stress at 50% elongation (50% stress) in the range of 2.5 to 7.0 N / 25 mm. It is more preferable to use one having a range of 0.0 N / 25 mm. Further, as the stretchable material, it is preferable to use a material having a stress at 100% elongation (100% stress) in the range of 6.0 to 15.0 N / 25 mm, and in the range of 8.0 to 12.0 N / 25 mm. It is preferable to use those.

  If the 50% stress is less than 2.5 N / 25 mm and the 100% stress is less than 6.0 N / 25 mm, the tape will be stretched even if the tape is stretched with a small force. It becomes difficult to act. In such a case, the stretching force does not sufficiently act on the fastening tape, and the fit may be lost.

  On the other hand, if the 50% stress exceeds 6.0 N / 25 mm and the 100% stress exceeds 15.0 N / 25 mm, the tape becomes difficult to stretch even if the tape is pulled with a strong force. Therefore, the stretchability of the tape portion is not sufficiently exhibited, and there is a possibility that sufficient fit cannot be obtained.

  The 50% stress and 100% stress can be measured by using a tensile tester (trade name: Strograph, Tensilon, etc.) that can fix both ends of the test piece with a chuck or the like. A test piece of length 60 mm × width 25 mm was fixed to a tensile tester at a distance between chucks of 40 mm so that the longitudinal direction thereof was the tensile direction, and then pulled at a speed of 200 mm / min, when stretched 50% (between chucks) The stress when the distance is 60 mm is 50% stress, and the stress when 100% is extended (when the distance between chucks is 80 mm) is 100% stress.

  However, all portions of the stretchable region need not be made of a stretchable material, and the stretchable region may be formed by a stretchable laminated sheet in which a plurality of sheet materials including a stretchable material are laminated. For example, in the stretchable fastening tape 28 shown in FIGS. 3A and 3B, the stretchable region 32 is formed by a stretchable sheet 62. This stretchable sheet 62 is a stretchable laminated sheet having a structure as shown in FIG. 64.

  The stretchable laminated sheet 64 shown in FIG. 7 is formed by laminating a covering sheet 70 (70a, 70b) made of a nonwoven fabric or the like that can be deformed following the stretch of an elastic material on and under an elastic sheet 68 made of an elastic material. It is a laminated sheet having a three-layer structure joined by processing (in the figure, a portion indicated by reference numeral 72 is an embossed portion). Such a stretchable laminated sheet can also be used for forming a stretchable region.

  Examples of the “elastic material” include elastic thermoplastic synthetic resins such as styrene block copolymers, polyurethane block copolymers, polyester block copolymers, polyamide block copolymers, and the like. it can. Therefore, a sheet material made of these elastic materials can be suitably used as the “elastic sheet”. Moreover, as the “coating sheet”, for example, a nonwoven fabric made of thermoplastic synthetic resin fibers such as polyolefin fibers, polyester fibers, or composite fibers thereof can be suitably used.

  The base material is preferably composed of a composite sheet in which a non-stretchable sheet that forms a non-stretchable region and a stretchable sheet that forms a stretchable region are joined, in particular, a composite sheet in which both sheets are joined by fusion bonding. . By doing so, it becomes possible to firmly join the non-stretchable sheet and the stretchable sheet as compared with the case where they are bonded together by bonding with an adhesive or the like. It is possible to effectively prevent problems such as separation of the joint between the non-stretchable sheet and the non-stretchable sheet. Examples of the method of “fusion” include fusion by heating or pressurization such as embossing, ultrasonic fusion, and the like.

  The “composite sheet” is preferably one in which stretchable sheets are joined together so as to be continuous with the end of the non-stretchable sheet. In such a composite sheet, as shown in FIGS. 3A and 3B, the non-stretchable region 30 includes a region where only the non-stretchable sheets 56 and 60 are disposed, and a joint region between the non-stretchable sheets 56 and 60 and the stretchable sheet 62. 58 and 66, and the stretchable region 32 is formed from a region where only the stretchable sheet 62 is disposed.

  3A and 3B are enlarged views of the vicinity of the elastic fastening tape 28 of the tape-type diaper 1 shown in FIG. In the example shown in FIGS. 3A and 3B, the stretchable fastening tape 28 is a composite in which a base material 48 is joined to a non-stretchable sheet 60 that forms a non-stretchable region 30 and a stretchable sheet 62 that forms a stretchable region 32. It is composed of sheets. The composite sheet is obtained by joining stretchable sheets 62 so as to be continuous with the end of the non-stretchable sheet 60.

  The non-stretchable region 30 of the base material 48 is formed of a region where only the non-stretchable sheet 60 is disposed and a joining region 66 between the non-stretchable sheet 60 and the stretchable sheet 62, and the stretchable region 32 is the stretchable sheet 62. Is formed from the region where only the substrate is disposed. That is, even in the region where the stretchable sheet 62 is disposed, the stretchable sheet 62 does not exhibit the stretchability of the region that overlaps the non-stretchable sheet 60, and is a non-stretchable region 30. In the state where the elastic fastening tape 28 is attached to the disposable diaper 1, the region overlapping the non-stretchable material such as the side flap 8 does not exhibit the stretchability of the stretchable sheet 62, and the non-stretchable region. It becomes.

  In the stretchable fastening tape 28 shown in FIGS. 3A and 3B, the shape of the non-stretchable region 30 is such that the end of the non-stretchable region 30 extends toward the boundary with the stretchable region 32 from the end of the region where the hook material 44a is attached. Is formed. Such a shape is preferable because there is an advantage that the force pulling the fastening tape is easily transmitted to the entire fastening tape. Examples of shapes that can obtain such effects include trapezoidal shapes and mountain shapes.

  The illustrated elastic fastening tape 28 uses rectangular sheets as the stretchable sheet 62 and the non-stretchable sheet 56, and the base end of the base material 48 is formed in a rectangular shape having a uniform width. However, the stretchable fastening tape of the present invention is not limited to such a shape, and may be formed in a shape (for example, a trapezoidal shape or the like) in which the end side of the substrate is wide.

  The tape-type diaper of the present invention is preferably one in which two stretchable fastening tapes are arranged on each of the left and right side edges of the back body. In this way, a tape-type diaper in which two elastic fastening tapes are arranged is a wearer's body shape, specifically around the waist and around the legs, compared to a tape-type diaper in which one piece is placed. It is excellent in that the tape position and the tightening degree can be adjusted according to the dimensions.

  As described above, when two elastic fastening tapes are arranged on each of the left and right side edges of the rear body, the elastic fastening tape is attached to each of the left and right side edges of the rear body. It is preferable that two are arranged at intervals of 20 to 150 mm.

  When two elastic fastening tapes are arranged, the upper tape improves the fit around the abdomen and the lower tape improves the fit around the legs. Adjust appropriately before use. Even in such a case, if the interval between the two fastening tapes is 20 mm or more, the two fastening tapes can be stopped at an appropriate position without interfering with each other. For example, even when two fastening tapes are fastened so as to cross each other, the tape can be fastened to an appropriate position by forming a tack in the area between the tapes of the side flaps.

  On the other hand, by setting the interval to 150 mm or less, the inter-tape region of the side flap can also be pulled firmly, so that a good fit can be obtained. In other words, if the interval exceeds 150 mm, the area between the side flaps of the side flaps may become loose, and the fit may be deteriorated or leakage may occur from the gap.

  For example, the tape-type diaper 1 shown in FIG. 1 has two elastic fastening tapes 28 arranged on each of the left and right side edges 6a and 6b of the back body 6, and the distance between the two tapes is 30 mm. It is what.

  The tape-type diaper of the present invention is preferably one in which the stretchable fastening tape of the present invention is joined to the diaper main body with an adhesive. The tape may be bonded to the upper surface of the side flap, that is, the top sheet, but may be bonded to the lower surface of the side flap, that is, the back sheet or the cover sheet. However, preferably, it is in a state of being interposed between the top sheet and the back sheet or the cover sheet, and in this way, the fastening tape is sandwiched between both sheets, so that the fastening tape is difficult to come off. There is. The tape-type diaper 1 shown in FIG. 1 is stretchable according to the present invention by an adhesive on the side edges 6a and 6b of the back body 6 of the diaper main body, more specifically on both side edges of the side flap 8 constituted by the side sheet 18b. This is an example in which the adhesive fastening tape 28 is joined.

[1-2] Absorber:
The absorber is a member for absorbing and holding the wearer's urine. The absorber is made of an absorbent material because it needs to absorb and retain the wearer's urine and body fluid.

  Examples of the absorbent material constituting the absorber include conventionally known absorbent materials usually used for disposable diapers and other absorbent articles, such as fluff pulp, super absorbent polymer (Super Absorbent Polymer; hereinafter referred to as “SAP”). And a hydrophilic sheet. It is possible to use wood pulp or non-wood pulp defibrated as fluff pulp, sodium polyacrylate as SAP, tissue, absorbent paper, hydrophilized nonwoven fabric as hydrophilic sheet preferable.

  These absorbent materials are usually used as a single-layer or multi-layer mat. Under the present circumstances, 1 type may be used independently among the said absorptive materials, and 2 or more types may be used together. Especially, what used together about 10-500 mass parts SAP with respect to 100 mass parts of fluff pulp is preferable. At this time, the SAP may be uniformly mixed in each mat of fluff pulp, or may be arranged in layers between the layers of the multilayer fluff pulp.

  It is preferable that the absorber is interposed at least in part between the top sheet and the back sheet. Usually, the absorber is interposed between the top sheet and the back sheet by being sandwiched between the top sheet and the back sheet and sealing the peripheral edge thereof. Therefore, the flap part in which the absorber is not interposed is formed between the top sheet and the back sheet at the peripheral part of the absorber. The absorber is interposed in at least a part between the top sheet and the back sheet. More specifically, the absorbent body may be interposed at least in the crotch region, and the absorbent body may extend to the front body and the back body.

  It is preferable that the absorber is entirely wrapped with a hydrophilic sheet. Such a configuration has an advantage that SAP can be prevented from leaking from the absorber and shape stability can be imparted to the absorber.

  Although there is no restriction | limiting in particular about the shape of an absorber, The shape used in the conventional disposable diaper and other absorbent articles, for example, a rectangular shape, an hourglass type, a gourd type, a T shape etc. can be mentioned. The tape-type diaper 1 shown in FIG. 1 is an example in which an hourglass-type absorber is used as the absorber 22.

  In addition, a sheet (second sheet) for diffusing liquid such as urine and body fluid may be incidentally disposed on the surface side of the absorber (for example, between the absorber and the top sheet). . When this second sheet is attached, due to the wearer's posture, etc., even when the space on the back side of the top sheet is not sufficiently formed, the absorption rate of urine, body fluid, etc. is difficult to decrease, and the absorption rate decreases. It is possible to prevent leakage of urine and body fluids.

  Examples of the material constituting the second sheet include hydrophilic and liquid-permeable materials such as woven fabric, non-woven fabric, porous plastic, and fluff pulp. Examples of these constituent materials include polypropylene, polyethylene, polyester, rayon, pulp, and composite fibers thereof. As the pulp, crimped fibers such as curly cellulose fibers can be suitably used.

[1-3] Top sheet:
A top sheet is a sheet | seat arrange | positioned so that the surface (surface located in a wearer's skin side at the time of mounting | wearing of a diaper) may be coat | covered. At least a part (all or a part) of the top sheet is made of a liquid-permeable material because the absorber disposed on the back surface side needs to absorb the wearer's urine. Usually, at least near the surface of the absorber, it is made of a liquid-permeable material that can permeate the wearer's urine and body fluid. As long as at least a part is made of the liquid permeable material, the entire top sheet is not necessarily made of the liquid permeable material.

  Examples of the liquid permeable material constituting the top sheet include a woven fabric, a nonwoven fabric, and a porous film. Among these, it is preferable to use a non-woven fabric made of a thermoplastic resin such as polypropylene, polyethylene, polyester, or nylon and subjected to a hydrophilic treatment. There is no restriction | limiting in particular also about the kind of nonwoven fabric, The conventionally well-known nonwoven fabric manufactured by various manufacturing methods, such as air through (card hot air), card | curd embossing, and a spun bond, can be used suitably.

  The top sheet may be composed of a single sheet material, but may be composed of a plurality of sheet materials. For example, the form which comprises the top sheet arrange | positioned at the surface part of an absorber and the top sheet arrange | positioned in the part of a side flap by a different sheet | seat is also utilized frequently. The tape-type diaper 1 shown in FIG. 1 has a top sheet 18 (center sheet 18a) made of a liquid-permeable material at the center of the diaper, and the side flap 8 part of the diaper is resistant to liquid permeation. It is the example which has arrange | positioned the top sheet 18 (side sheet 18b) which consists of ventilation water-repellent material which shows.

[1-4] Backsheet:
A backsheet is a sheet | seat arrange | positioned so that the back surface (surface located in a wearer's clothing side at the time of mounting | wearing of a diaper) may be coat | covered. The back sheet is made of a liquid-impermeable material because it is necessary to prevent the wearer's urine from leaking outside the diaper. Although there is no restriction | limiting in particular about the arrangement | positioning method, For example, the structure which arrange | positions the back seat | sheet 20 so that it may correspond with the external shape of a diaper like the tape-type diaper 1 shown in FIG. However, it is not always necessary to adopt such a configuration. From the viewpoint of preventing leakage of urine absorbed by the absorber, a back sheet made of a liquid-impermeable material is disposed at least in a portion where the absorber is present. May be.

  Examples of the liquid-impermeable material constituting the backsheet include a liquid-impermeable film made of a resin such as polyethylene. Among these, a microporous polyethylene film is preferably used. This microporous polyethylene film has a large number of fine pores of 0.1 to several μm, and is liquid impervious but has moisture permeability, so that the inside of the diaper can be prevented from being steamed There is.

  Note that a sheet material (cover sheet) may be bonded to the outer surface of the back sheet. This cover sheet is used to reinforce the back sheet and improve the feel (tactile feeling) of the back sheet.

  Examples of the material constituting the cover sheet include woven fabric and non-woven fabric. Especially, it is preferable to use the dry nonwoven fabric and wet nonwoven fabric which consist of thermoplastic resins, such as polyethylene, a polypropylene, and polyester.

[1-5] Solid gather:
In order to prevent the side leakage of the urine excreted by the wearer, a three-dimensional gather may be provided. The three-dimensional gather is a member for preventing side leakage of the urine excreted by the wearer, and is a leak-proof wall configured to stand up three-dimensionally. By forming such a three-dimensional gather, the three-dimensional gather serves as a breakwater, and leakage from a leg-diameter opening or the like (so-called “lateral leakage”) can be effectively prevented.

  The structure of a three-dimensional gather can employ | adopt the structure used for the conventional disposable diaper and other absorbent articles. For example, a stretchable material (a three-dimensional gathered stretchable material) disposed on a part of the water-repellent sheet material and a sheet (gather) formed on the sheet material by the three-dimensional gathered stretchable material can be suitably used.

  The three-dimensional gather may be formed of a sheet material that is completely different from the top sheet and the back sheet, but may be formed by folding back a top sheet such as a center sheet or a side sheet. For example, the tape-type diaper 1 shown in FIG. 1 is an example in which the three-dimensional gather 26 (26a, 26b) is formed by folding back the side sheet 18b. However, the three-dimensional gather may be formed by folding back a member other than the top sheet such as a second sheet.

  In order to prevent leakage from the crotch part, this three-dimensional gather may be formed at least in the crotch part, but may be formed in the front body or the back body. For example, the tape-type diaper 1 shown in FIG. 1 has a pair of three-dimensional gathers 26 (26a, 26b) formed continuously from the crotch part 4 to both the front body 2 and the back body 6 along the longitudinal direction of the diaper. An example is shown. Further, at least one pair of solid gathers must be formed, but two or more pairs may be formed.

  The three-dimensional gather may be an inward gather that tilts toward the inside of the diaper, or may be an outward gather that tilts toward the outside of the diaper. Moreover, it can also be set as the three-dimensional gathers (C fold gather, Z fold gather, etc.) which formed the bending part and the folding | turning part in a part of height direction. For example, the tape-type diaper 1 shown in FIG. 1 is an example in which the three-dimensional gather 26 (26a, 26b) is inwardly gathered.

[1-6] Various elastic materials:
In a tape-type diaper, it is preferable to arrange an elastic material around the legs and arrange an elastic material around the waist.

  The leg circumference elastic material is an elastic material arranged along the leg circumference opening. By arranging the leg-stretchable material, a gather (leg gather) rich in stretchability can be formed in the leg-surrounding opening. Therefore, it is difficult to form a gap around the leg, and urine leakage from the opening around the leg can be effectively prevented. Further, when the leg stretchable material is disposed, the leg stretchable material contracts on both sides of the absorbent body when changing the diaper, so that the vicinity of the crotch portion is deformed into a bowl shape and a recess is formed. For this reason, urine and body fluid accumulate in the concave portion, and the diaper can be easily replaced without spilling urine and body fluid.

  For example, the tape-type diaper 1 shown in FIG. 1 is an example in which leg gathers are formed by arranging two leg-around elastic members 40 linearly along the longitudinal direction of the diaper. The leg-around elastic member 40 is made of rubber thread. However, the leg-surrounding elastic members are not necessarily arranged linearly, and may be arranged in a curved line along the curve of the leg-periphery opening, for example.

  The leg stretchable material is preferably formed with a leg stretchable material 40 in a portion outside the upright line 46 of the three-dimensional gather 26, for example, like the tape-type diaper 1 shown in FIG. With such a configuration, it is possible to improve the wearing feeling and wearing feeling of the crotch part while ensuring a sufficient leakage preventing effect of the three-dimensional gather.

  The tape-type diaper 1 shown in FIG. 1 shows an example in which the shape, arrangement position, number of arrangements, etc. of the leg elastic members 40 are bilaterally symmetric, but those that are bilaterally asymmetric are also included in the scope of the present invention. It is. And in the tape-type diaper 1 shown in FIG. 5, although the example in which the leg periphery elastic material 40 was arrange | positioned two on one side was shown, only one may be arrange | positioned and three or more may be arrange | positioned. Good. Further, when using a plurality of leg-surrounding stretchable materials, the thickness, stretch rate, etc. may be set as appropriate according to the purpose, and it is not necessary to use the same for all.

  The waist elastic material is an elastic material arranged along the waist opening. By arranging the elastic material around the waist, a gather (waist gather) rich in elasticity can be formed in the waist opening. This waist gather makes it difficult for gaps to be formed around the waist, preventing urine leakage from around the waist, and improving the fit of the diaper to the wearer, thereby preventing the diaper from falling down.

  In addition, the tape-type diaper 1 shown in FIG. 1 is the example which has arrange | positioned the strip | belt-shaped waist circumference elastic material 42 along the edge of the back body 6 of a diaper. The belt-like waist elastic member 42 is made of an elastic foam such as urethane foam. In the illustrated example, the waist elastic member 42 is disposed only on the back body (back side), but the waist elastic material may be disposed on the front body (abdominal side).

  For example, like the tape-type diaper 1 shown in FIG. 1, the tape-type diaper 1 shown in FIGS. 1 and 6 is attached to the left and right side edges 6 a and 6 b of the back body 6 by the elastic fastening of the present invention. When two tapes 28 are arranged, a waist elastic material 42 is provided along the edge of the back body 6 and a leg elastic material 40 is provided along at least both side edges of the crotch 4. It is preferable.

  With the configuration as described above, the elastic fastening tape 28 disposed on the upper side of the two elastic fastening tapes 28 and the waist elastic material 42 are integrated to fit the diaper around the wearer's waist. Can be improved. In addition, the elastic fastening tape 28 disposed on the lower side of the two elastic fastening tapes 28 and the leg-surrounding elastic material 40 are integrated to improve the fit of the diaper around the wearer's legs. be able to. The effect is that the elastic fastening tape 28 arranged on the upper side is fastened in substantially the same direction as the edge of the front body 2 and the elastic fastening tape 28 arranged on the lower side is attached to the edge side of the front body 2 ( This is particularly large when the diaper is fastened upward.

  For these stretchable materials, after considering the degree of shrinkage of gathers, etc., the constituent material, the elongation rate of the material, the stretched state at the time of fixing, etc. may be determined.

  As an elastic material, the elastic material which has been used with the conventional disposable diaper can be used conveniently. Specific examples include elastic rubber, elastic film, elastic foam (urethane foam, etc.), etc., as well as thread rubber and flat rubber made of elastic materials such as natural rubber and synthetic rubber (urethane rubber, etc.). .

  The stretchable material is preferably fixed in the stretched state in order to exert a sufficient stretch force. For example, when the elastic material is natural rubber or synthetic rubber, it is preferably fixed in a stretched state of 120 to 400%, and more preferably fixed in a stretched state of 200 to 300%. By fixing in the extended state in such a range, a sufficient stretching force can be applied.

  The stretchable material as described above is fixed to other constituent members of the diaper by an adhesive or other means. The fixing method may be, for example, adhesion using a hot melt adhesive or other highly fluid adhesive, or may be welding by heat such as heat sealing or ultrasonic waves.

[2] Tape diaper manufacturing method:
Hereinafter, the manufacturing method of the tape type diaper of this invention is demonstrated in the example in the case of manufacturing the tape type diaper 1 shown in FIG. First, the absorbent body 22 and the leg elastic member 40 wrapped in a hydrophilic sheet are placed on the surface of a long sheet material (back sheet material) which is a material of the back sheet 20, and the top sheet is further placed on the surface. By placing a long sheet material (top sheet material) as 18 material, a laminate (diaper continuum) as an intermediate body of the diaper is obtained. At this time, as the top sheet material, two types of top sheet material corresponding to the center sheet 18a and top sheet material corresponding to the side sheet 18b are used. A three-dimensional gather 26 is formed by providing a folded portion on the sheet material corresponding to the side sheet 18b.

  In the diaper continuous body obtained as described above, a portion corresponding to the opening around the leg of the diaper is cut out in an arc shape and cut (R cut) to form an opening around the leg. Finally, an elastic fastening tape 28 as shown in FIGS. 3A and 3B is attached to the side edges 6a and 6b of the back body 6 of the diaper, and a continuous diaper is cut into individual diapers, thereby forming a tape mold. Diaper 1 is produced. At this time, it is preferable that the left and right side edge portions of the back body 6 and the end portions of the elastic fastening tape 28 are joined by an adhesive or the like.

  In addition to the above method, an elastic fastening tape is previously attached to the top sheet material, and the absorbent body and leg elastic materials wrapped in a hydrophilic sheet are placed on the surface of the back sheet material. Further, a diaper continuous body may be obtained by placing a top sheet material provided with a stretchable fastening tape on the surface thereof. The series of steps as described above can be continuously performed by mechanical means. For example, by adopting a method / apparatus such as continuously feeding a long sheet material from a roller, continuous production of a tape-type diaper becomes possible, which contributes to improvement of productivity.

  Hereinafter, the tape type diaper of the present invention will be described more specifically with reference to examples. However, the disposable diaper of this invention is not limited to the form of a following example.

  In addition, “50% stress” and “100% stress” shown in Table 1 indicate values measured by the method described above for the stretchable sheet constituting the base material of the stretchable fastening tape. As for “breaking strength”, the maximum strength when the sample broke in the same measurement method as “50% stress” and the like was shown.

Example 1
A tape-type diaper provided with an elastic fastening tape was produced. The structure of the diaper was based on the tape type diaper 1 shown in FIG. As the base material 48 of the stretchable fastening tape 28, a material in which the first non-stretchable region 34, the stretchable region 32, and the second non-stretchable region 30 were sequentially formed was used. As the non-stretchable sheet 60 constituting the first non-stretchable region 34, (SMS non-woven fabric), and as the stretchable sheet 62 constituting the stretchable region 32, (elastic non-woven fabric (trade name: Elax, manufactured by GPF)), (SMS nonwoven fabric) was used as the non-stretchable sheet 56 constituting the second non-stretchable region 30.

  The length of the overlapping portion of the non-stretchable sheet 60 and the stretchable sheet 62 is 10 mm, and the length of the overlapping portion of the stretchable sheet 62 and the non-stretchable sheet 56 is 10 mm. A material 48 was produced. As a result, the length of the first non-stretchable region 34 was 60 mm, the length of the stretchable region 32 was 50 mm, and the length of the second non-stretchable region 30 was 60 mm. The second non-stretchable region 30 is provided with a hook material 44 a of a mechanical fastener as the fastener member 44.

  With the stretchable fastening tape 28 thus obtained, the end of the base 48 on the second non-stretchable region 30 side is the tip, and the end of the base 48 on the first non-stretchable region 34 side is the end, The first non-stretching of the base material 48 so that the boundary 52 between the stretchable region 32 of the base material 48 and the first non-stretchable region 34 is disposed 20 mm outside the left and right side edges 6a, 6b of the back body 6. The region 34 was joined to the back body 6. Joining was performed with a hot melt adhesive. The length of the joining allowance at this time was 40 mm.

(Example 2)
The tape type diaper of Example 2 was produced according to the tape type diaper of Example 1. The tape-type diaper of Example 2 was produced in the same manner as the tape-type diaper of Example 1 except that only the material of the elastic sheet constituting the base material of the elastic fastening tape was changed. (Elastic nonwoven fabric (trade name: Espancione, manufactured by Kanebo Corporation)) was used as the stretchable sheet.

(Comparative Examples 1-2)
According to the tape type diaper of Example 1, the tape type diaper of Comparative Examples 1-2 was produced. The tape type diaper of Comparative Examples 1 and 2 is configured by shortening the first non-stretchable region (the distance between the boundary between the base stretchable region and the first non-stretchable region and the left and right side edges of the back body). The tape-type diaper of Example 1 was manufactured in the same manner except that the change was made. In the tape type diaper of Comparative Example 1, the interval was set to 0 mm, and in the tape type diaper of Comparative Example 2, the interval was set to 10 mm. In addition, the tape type diaper of Comparative Examples 1-2 used the elastic nonwoven fabric (Brand name: Elax, GPF company) as an elastic sheet which comprises an expansion-contraction area | region similarly to the tape type disposable diaper of Example 1. FIG.

  About the tape type diaper obtained in this way, 30 monitors were asked to perform attachment and detachment operations 5 times each (total 150 times), and the strength of the fastening tape was verified. When the number of diapers with broken fastening tape is 2 or less, “very good (indicated by“ ◎ ”in the table)”, and when 5 or less diapers are “good” (indicated by “◯” in the table). In the case of 6 to 10 sheets, “slightly defective (indicated by“ Δ ”” in the table) ”and in the case of exceeding 10 sheets,“ bad (indicated by “x” in the table) ”were evaluated. The results are shown in Table 1.

(Evaluation)
In the tape type diaper of Example 1, since the distance between the boundary between the stretchable region and the first non-stretchable region of the base material and the left and right side edges of the back body is 20 mm, the attachment / detachment operation is performed 150 times in total. However, the fastening tape was not broken at all and an extremely good result was shown. The tape-type diaper of Example 2 uses a sheet having a low breaking strength as the elastic sheet constituting the elastic fastening tape as compared with the tape-type diaper of Example 1, but the elastic region and 1 Since the distance between the boundary with the non-stretchable region and the left and right side edges of the back body was 20 mm, the fastening tape was few torn and good results were shown.

  In the tape-type diaper of Comparative Example 1, since the distance between the boundary between the stretchable region and the first non-stretchable region of the base material and the left and right side edges of the back body is set to 0 mm, the fastening tape is very thin The result was poor. The tape-type diaper of Comparative Example 2 has a distance of 10 mm between the boundary between the stretchable region and the first non-stretchable region of the substrate and the left and right side edges of the back body, and is more spaced than the tape-type diaper of Comparative Example However, there were still many pieces of fastening tape, and the result was somewhat poor.

  The tape-type diaper of the present invention can be suitably used as a diaper for infants or adults such as elderly people and persons with disabilities who need care.

It is a partially notched top view which shows one Embodiment of the tape type diaper of this invention, It is a figure which expand | deploys the tape type diaper of this invention, and shows the state seen from the top sheet side. It is a partially notched top view which shows one Embodiment of the conventional tape type diaper, and is a figure which shows the state which expand | deployed the conventional tape type diaper and was seen from the top sheet side. It is an enlarged plan view which shows one embodiment of the tape type diaper of this invention, and is a figure which expands and shows the stretchable fastening tape part of the tape type diaper shown in FIG. It is an expanded sectional view showing one embodiment of the tape type diaper of the present invention, and is a figure expanding and showing the elastic fastening tape part of the tape type diaper shown in FIG. It is the conceptual diagram which showed typically the effect of the tape type diaper of this invention. It is the conceptual diagram which showed typically the effect of the tape type diaper of this invention. It is the conceptual diagram which showed the effect of the conventional tape type diaper typically. It is the conceptual diagram which showed the effect of the conventional tape type diaper typically. It is a perspective view which shows the state which uses the tape-type diaper of this invention. It is sectional drawing of the lamination sheet used for a stretchable fastening tape .

Explanation of symbols

DESCRIPTION OF SYMBOLS 1,100: Tape-type diaper, 2: Front body, 4: Crotch part, 6: Back body, 6a, 6b: Side edge, 8: Side flap, 10: Fastening tape, 12: Front patch, 18: Top sheet , 18a: Center sheet, 18b: Side sheet, 20: Back sheet, 22: Absorber, 26, 26a, 26b: Three-dimensional gather, 28: Stretchable fastening tape, 30: Non-stretchable area, 32: Stretchable area, 34 : Non-stretchable region, 36, 36a, 36b: three-dimensional gather stretchable material, 40: leg stretchable material, 42: waist stretchable material, 44: fastener member, 44a: hook material, 44b: loop material, 46: upright line, 48: base material, 52, 54: boundary, 56: non-stretchable sheet, 58, 66: joining region, 60: non-stretchable sheet, 62: stretchable sheet, 64: stretchable laminated sheet, 68: elastic sheet, 0: cover sheet, 72: embossments.

Claims (5)

Consists of each part of the front body, the crotch and the back body,
An absorber, a top sheet that is arranged so as to cover the surface of the absorber, and at least partly made of a liquid permeable material, and a back sheet that is arranged so as to cover the back surface of the absorber. Comprising a back sheet, and a fastening tape arranged to extend from the left and right side edges of the back body, and fixing the front body and the back body,
The fastening tape has a base material and a fastener member attached to the surface of the base material, and the base material is a first non-stretchable region formed by a non-stretchable sheet made of a non-stretchable nonwoven fabric. A stretchable region formed by a stretchable sheet made of a stretchable nonwoven fabric, and a second non-stretchable region formed by a non-stretchable sheet made of a non-stretchable nonwoven fabric , and forming the first non-stretchable region The stretchable sheet forming the stretchable region is joined so as to be continuous with the end portion of the stretchable sheet, and the non-stretchable region is formed so as to be continuous with the end portion of the stretchable sheet. It is an elastic fastening tape that is a base material to which sheets are joined ,
The stretchable fastening tape has an end on the second non-stretchable region side of the substrate as a tip, and an end on the first non-stretchable region side of the substrate as a terminal,
In the state where the boundary between the stretchable region and the first non-stretchable region of the base material is arranged outside the left and right side edges of the back body, in the portion of the first non-stretchable region of the base material A tape-type diaper joined to the left and right side edges of the rear body.   In the stretchable fastening tape, the boundary between the first non-stretchable region and the stretchable region of the base material is arranged 20 to 80 mm outside the left and right side edges of the back body, The tape-type diaper according to claim 1, wherein the tape-type diaper is joined to left and right side edges of the back body.   In the stretchable fastening tape, the boundary between the first non-stretchable region and the stretchable region of the base material is arranged on the outside of the left and right side edges of the back body by 30 to 50 mm, The tape-type diaper according to claim 2, wherein the tape-type diaper is joined to the left and right side edges of the back body.   The tape-type diaper according to any one of claims 1 to 3, wherein two each of the stretchable fastening tapes are arranged on each of the left and right side edges of the back body.   5. The tape-type diaper according to claim 4, wherein two elastic fastening tapes are arranged at intervals of 20 to 150 mm on each of the left and right side edges of the back body.

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