JP3212169U - Body fluid absorbent article - Google Patents

Abstract

A body fluid-absorbing wearing article capable of stretching and shrinking is provided. A body fluid-absorbing wearing article using a sanitary napkin as an example includes a top sheet layer, a back sheet layer, and an absorbent body interposed between the sheet layers. The top sheet layer and the back sheet layer have extensibility in the vertical direction. At least one of the sheet layers 11 and 12 includes a first sheet 25 that exhibits extensibility when a plurality of pleats 28 extending in the lateral direction are widened in the longitudinal direction, and elastic in the longitudinal direction. The second sheet 26 (strip 27) that can be stretched and contracted and is joined to the first sheet 25 in an elastically relaxed state and interposed between the first sheet and the absorbent body. The [Selection] Figure 2

Description

  The present invention relates to a body fluid-absorbing wearing article suitable for use as a sanitary napkin or a urine absorbing pad.

  Pad-like body fluid-absorbing wearing articles such as sanitary napkins and urine absorbing pads used by being attached to the inner surface of the crotch region of pants-type wearing articles such as sanitary pants are well known. Also, such wearable articles that are extensible in the front-rear direction of the wearer's body are known.

  For example, the absorbent product described in Japanese Patent No. 3998712 (Patent Document 1) has an extensible part that crosses the absorbent product. The extensible portion can extend in the longitudinal direction of the absorbent product. A large number of crepings are formed on the topsheet and backsheet in the extensible portion.

  The absorbent article having stretchability described in JP 2013-385 A (Patent Document 2) includes a stretchable back sheet and a shrinkable absorbent structure, and is in a stretched state with a non-stretched back sheet. The absorbent structure in the contracted state is fixed to each other. The absorbent structure can be contracted as the back sheet contracts. For the back sheet, for example, an elastomer film or an embossed film is used. This absorbent article, for example, a sanitary napkin, is in a contracted state when not stretched, and is stretched when a tensile load of a required size is applied. The sanitary napkin formed in this way can expand and contract at the crotch portion of the underwear.

Japanese Patent No. 3998712 JP 2013-385 A

  In a conventional sanitary napkin in which creping is formed on a top sheet or a back sheet to form extensible portions on these sheets, it is difficult to quickly contract and restore the extensible portions after extending the extensible portions. Moreover, in the conventional absorbent article which makes the absorbent article which has extensibility by fixing the non-shrinkable absorbent structure to the stretched back sheet, let the back sheet be air-permeable and liquid-impermeable. Then, a composite sheet in which a plurality of thread-like elastic members extending in parallel with each other is sandwiched by a gas-permeable liquid-impermeable film and a nonwoven fabric must be made, and the composite sheet must be stretched.

  An object of the present invention is to provide a pad-like body fluid-absorbing wearing article that is improved so as to solve such problems in the prior art.

  In order to solve the above problems, the present invention is directed to a surface sheet layer and a clothing having a longitudinal direction, a lateral direction, and a thickness direction orthogonal to each other, and forming a skin facing surface in the thickness direction. A body fluid-absorbing absorber is interposed between the back sheet layer forming the facing surface, the top sheet layer is liquid permeable in at least part of the portion covering the absorber, and the back sheet layer is The portion that covers the absorber is liquid-impermeable, and the topsheet layer and the backsheet layer are joined at a portion extending from the absorber, and the absorber is the topsheet layer and the backsheet. A pad-like body fluid-absorbing wearing article joined to at least one of the layers.

  The features of the present invention are as follows. Each of the top sheet layer, the back sheet layer, and the absorber has extensibility in the longitudinal direction. At least one of the top sheet layer and the back sheet layer has a plurality of pleats extending in the lateral direction in parallel, and the pleats are widened in the longitudinal direction to express the extensibility. And the first sheet that crosses the absorber and can be repeatedly elastically stretched and contracted in the longitudinal direction, and is joined to the first sheet in an elastically relaxed state and the first sheet. It is formed by the 1st sheet | seat and the 2nd sheet | seat interposed between the said absorbers.

  The bodily fluid-absorbing wearing article according to the present invention includes a first sheet that exhibits extensibility when the pleats are widened, and a second sheet that is in a relaxed state in which elastic stretching and contraction can be repeated. Are joined together, it is easy for the first sheet in the stretched state to elastically return to the state before stretching.

The following drawings not only show specific embodiments of the present invention, but also include indispensable configurations, selectively implementable configurations, and preferred embodiments of the present invention.
The partially broken top view which shows the skin opposing surface of a bodily fluid absorptive wearing article (sanitary napkin). The partially broken top view which shows the clothing opposing surface of the bodily fluid absorptive wearing article of FIG. The top view of an absorber. The figure which shows the IV-IV line | wire cut surface of FIG. The figure similar to FIG. 4 when a sanitary napkin exists in an expansion | extension state. The fragmentary broken perspective view of the sanitary napkin with an individual bag. The partially broken top view which shows the skin opposing surface of the sanitary napkin which is an example of embodiment. The partially broken top view which shows the clothing opposing surface of the sanitary napkin of FIG. The figure similar to FIG. 4 which shows an example of embodiment. The figure similar to FIG. 9 which shows an example of embodiment. The side view of the roll for pleat formation.

  The details of the body fluid-absorbing wearing article according to the present invention will be described with reference to the accompanying drawings.

  FIG. 1 is a partial cutaway view showing a skin facing surface 11a of a sanitary napkin 10 which is an example of a body fluid absorbent wearing article. The napkin 10 has a top sheet layer 11 that forms a facing surface 11a against the wearer's skin (not shown) and a back sheet layer 12 that forms a facing surface 12a (see FIG. 2) against the wearer's clothing. And a body fluid-absorbing absorber 13 interposed between the two sheet layers 11 and 12. The top sheet layer 11 covers the absorber 13 and is at least partially permeable, and the back sheet layer 12 has at least a portion that covers the absorber 13 out of the whole. Is. The sanitary napkin 10 has a vertical direction, a horizontal direction, and a thickness direction indicated by double-headed arrows A, B, and C (see also FIG. 4), and the vertical direction A is a length direction or a front-rear direction. Sometimes called. The lateral direction B may be referred to as the width direction. The thickness direction C is a direction in which the top sheet layer 11, the absorber 13, and the back sheet layer 12 overlap. The sanitary napkin 10 has side portions 16 extending in the longitudinal direction A on both sides in the lateral direction B, and end portions 17 extending in the lateral direction B on both ends in the longitudinal direction A, respectively. A plurality of compressed portions 19 for joining the top sheet layer 11 and the back sheet layer 12 are intermittently formed on the peripheral edge 18 of the sanitary napkin 10 formed by the side portions 16 and the end portions 17. Yes. The top sheet layer 11 and the back sheet layer 12 are also elastically extensible adhesives that preferably include a rubber-based resin component at a portion between the pressing parts 19 adjacent in the longitudinal direction A via an adhesive. They are joined to each other via 22.

  The surface sheet layer 11 is formed of a liquid-permeable nonwoven fabric or an apertured plastic film having extensibility in the longitudinal direction A, more preferably elastic extensibility. Such a surface sheet layer 11 when formed of a nonwoven fabric can be obtained by using a spunbond nonwoven fabric in which the constituent fibers are mainly oriented in the machine direction in a manner in which the machine direction coincides with the transverse direction B. Besides, it can also be obtained by using a nonwoven fabric containing crimped thermoplastic synthetic fibers or a nonwoven fabric containing elastic fibers such as polyurethane fibers. It can also be obtained by forming a large number of slits extending in the transverse direction B with respect to the non-extensible nonwoven fabric. Such a surface sheet layer 11 when formed of a plastic film is formed by forming a pleat region similar to the pleat region 29 (see FIGS. 2 and 4) described later on a polyethylene resin film having a liquid-permeable opening. In addition to the above, it can be obtained by forming a large number of slits extending in the lateral direction B in parallel with each other in a polyethylene resin film having liquid-permeable openings. The surface sheet layer 11 can also be formed of an elastomer film having liquid-permeable openings.

  In the present invention, when the sheet layer such as the top sheet layer 11 is extensible, the test piece in the longitudinal direction A and the transverse direction B obtained from the sheet layer is 50 mm and 25 mm in the longitudinal direction A. It was set in a tensile tester so that both ends were gripped by 10 mm each, and a length of 30 mm in the longitudinal direction A was pulled at a speed of 100 mm / min, and an extension force of 30 mN was applied in the longitudinal direction A for a dimension of 25 mm in the lateral direction B. This means that the elongation ratio at that time is 3% or more, that is, the length before the extension force is applied is 1.03 times or more. In addition, when the sheet layer has elastic extensibility, when the extension force is applied to extend the sheet layer in the longitudinal direction A to twice the length, and then immediately release the extension force, the length Means that the length returns to 1.5 times or less of the length before the extension force is applied. The sheet layer whose length does not return to 1.5 times or less has inelastic stretchability.

  FIG. 2 is a partial cutaway view showing the clothing facing surface 12 a of the sanitary napkin 10. The back sheet layer 12 forming the clothing facing surface 12a is liquid-impermeable, more preferably air-permeable and liquid-impermeable, and has the same shape and size as the top sheet layer 11, and an absorbent body. And a second sheet 26 formed by a plurality of strips 27 extending in the transverse direction B across 13 and elastically extending and contracting in the longitudinal direction A.

  The first sheet 25 in the case of liquid impermeability is formed of a plastic film such as a polyethylene resin film, for example. The first sheet 25 in the case of air-impermeable liquid impermeability is formed of, for example, a plastic film such as a stretched polyethylene resin film containing inorganic fine particles such as barium sulfate as a filler. A large number of pleats 28 extending from one side 16 to the other side 16 across the absorbent body 13 are formed on the first sheet 25. The pleats 28 adjacent to each other in the longitudinal direction A form a pleat region 29. Between the pleated areas 29 and 29 arranged in the longitudinal direction A, a flat non-pleated area 30 without the pleats 28 is formed. Since the cross-sectional shape in the longitudinal direction A of the pleat 28 has undulations as illustrated in FIG. 4, the pleat 28 does not irritate the wearer's skin because the pleat 28 is on the side portion 16. It is preferable that it is in the state where it was crushed not only between the pressing parts 19 but between the pressing parts 19.

  The strip 27 is formed of a plastic film having rubber elasticity such as a polyurethane resin film, and is interposed between the first sheet 25 and the absorbent body 13 and overlaps the pleat region 29, more preferably. Is overlapped with the pleat region 29 so as to cover the entire pleat region 29, and is bonded to the first sheet 25 via a hot melt adhesive 37 (see FIG. 4) in an elastically relaxed state. .

  Each of the strips 27 is also separated in the longitudinal direction A so as not to cover the whole area of the non-pleated area 30 between the pleated areas 29 and 29. Therefore, each of the non-pleated regions 30 faces the absorber 13 without the band 27 interposed therebetween. A fastening area 35 that can be detachably fastened to the garment is formed on the facing surface 12a for the garment in the non-pleated area 30 by applying an adhesive. In a preferred example of the sanitary napkin 10, the fastening region 35 is formed between the pleated region 29 and the pleated region 29 arranged in the longitudinal direction A, and the end portion 17 faces the pleated region 29. That is, a pleat region 29 is formed in the vicinity of the end portion 17 instead of the fastening region 35. From the time when the sanitary napkin 10 is manufactured to when the sanitary napkin 10 is worn, the fastening area 35 is covered and protected by a separator 36 indicated by an imaginary line.

  FIG. 3 is a plan view of the absorber 13. Absorbent body 13 is formed by compression-molding an aggregate of water-absorbing fibers, compression-molding a mixture of highly water-absorbing polymer particles and water-absorbing fibers, and coating the compression-molded material with tissue paper or a water-permeable nonwoven fabric. And may contain a binder such as a water-soluble binder. Examples of water-absorbing fibers include rayon fibers and acetate fiber staples, pulverized pulp, and the like. The absorber 13 also has side edges 31 extending in the longitudinal direction A on both sides in the lateral direction B, and end edges 32 extending in the lateral direction B at both ends of the longitudinal direction A. The absorbent body 13 includes a plurality of central dividing portions 33 a that partially divide the absorbent body 13 in the longitudinal direction A and extend in the lateral direction B on the center line P extending in the longitudinal direction A, and the center line from the side edge 31. A plurality of side edge dividing portions 33b extending in the horizontal direction B toward the P and dividing a part of the absorber 13 in the vertical direction A on the side of the center line P are formed. It is preferable that these center parting part 33a and the side edge parting part 33b are formed so as to be symmetric with respect to the center line P. However, the absorber 13 divides a part of the absorber 13 in the longitudinal direction A without intersecting the center line P and the side edge 31, or is irregularly distributed so that a part of the absorber 13 is longitudinally A. The part 33 which is parting may be formed. The absorber 13 is penetrated in the thickness direction C (see FIG. 4). The center parting part 33a and the side edge parting part 33b can be obtained by forming a slit in the absorber 13. In addition, when the outer shape of the absorbent body 13 is made using a mold, it is possible to simultaneously make a parting site.

  The absorbent body 13 in FIG. 3 is bonded to the top sheet layer 11 and / or the back sheet layer 12 using a hot melt adhesive (not shown), and has a central cut portion 33a and a side edge cut portion 33b. Closed. The absorber 13 in the case of joining to the back sheet layer 12 is joined to the non-pleated region 30 in the first sheet 25 so as not to prevent the second sheet 26 from extending in the longitudinal direction A. Although it is preferable, the present invention can be implemented in such a manner that the first sheet 25 is joined to the pleated region 29 or a part of the second sheet 26 is joined.

  4 is a cross-sectional view taken along line IV-IV in FIG. In the absorbent body 13 interposed between the top sheet layer 11 and the back sheet layer 12, a central part 33a penetrating the absorbent body 13 in the thickness direction C of the sanitary napkin 10 is formed. A large number of pleats 28 and pleat areas 29 are formed on the first sheet 25 in the back sheet layer 12. A non-pleated region 30 is formed between the pleated region 29 and the pleated region 29 that are separated from each other in the front-rear direction A. The first sheet 25 is flat in the non-pleated region 30, and a fastening region 35 is formed in a part of the non-pleated region 30. The strip 27 forming the second sheet 26 in the back sheet layer 12 straddles the pleat region 29 so as to cover the pleat region 29, and is bonded to the first sheet 25 via the hot melt adhesive 37. Yes. The strip 27 is preferably joined to the non-pleated region 30 as in the illustrated example, but can also be joined to the pleated region 29. However, the joining of the strip 27 to the pleat region 29 may prevent the pleat region 29 from being widened in the longitudinal direction A when the back sheet layer 12 is pulled in the longitudinal direction A. The strip 27 bonded to the region 29 is preferably bonded only to a part of the pleat region 29 or only to a part of the pleat regions 29 among the plurality of pleat regions 29.

  Since the strips 27 adjacent in the longitudinal direction A are separated from each other so as not to cover the non-pleated region 30, the non-pleated region 30 faces the absorber 13 directly. Therefore, in the non-pleated region 30, the first sheet 25 exhibits the function of air permeability without being obstructed by the strip 27, and the water vapor generated from the water absorbed by the absorbent body 13 is removed from the sanitary napkin 10. You can escape to the outside.

  FIG. 5 shows a portion of the sanitary napkin 10 showing a state when the sanitary napkin 10 of FIG. 4 formed as described above is gripped and the sanitary napkin 10 is pulled in the longitudinal direction A. FIG. The sanitary napkin 10 when pulled in this way is also shown in phantom lines in FIGS. 1-3. In the sanitary napkin 10 of FIG. 5, the first sheet 25 of the back sheet layer 12 is pulled in the longitudinal direction A, so that each of the pleats 28 is widened in the longitudinal direction A and at the same time forms a second sheet 26. Each of the pieces 27 is elastically extended. The top sheet layer 11 joined to the back sheet layer 12 at the side 16 and the end 17 of the sanitary napkin 10 also extends in the longitudinal direction A. The fact that the top sheet layer 11 and the back sheet layer 12 are joined by the pressing part 19 formed so as to extend intermittently in the longitudinal direction A in the side part 16 means that these both sheet layers 11 and 12 are the pressing part 19. And 19 can be extended in the longitudinal direction A. In particular, the intermittent formation of the compressed portion 19 in the pleat region 29 of the back sheet layer 12 facilitates the extension of the pleat region 29. The absorbent body 13 is bonded to the top sheet layer 11 and / or the back sheet layer 12, so that the absorbent body 13 expands in the longitudinal direction A at least at the center parting part 33a of the center parting part 33a and the side edge parting part 33b. To do. As a result, the sanitary napkin 10 extends in the longitudinal direction A. The extension of the sanitary napkin 10 caused by the extension is elastic due to the presence of the second sheet 26. When the sanitary napkin 10 is released from the extension force, it elastically contracts, The state before being stretched is approached.

  Therefore, when the sanitary napkin 10 is fastened and worn on the crotch region of clothes such as sanitary pants, the sanitary napkin is used when the crotch region is twisted or bent as the wearer moves. 10 can follow the movement of the crotch region while elastically expanding or contracting elastically. Since the sanitary napkin 10 extends easily as described above, the fastening region 35 does not easily peel off from the crotch region. In the crotch region, the sanitary napkin 10 does not sag or wrinkles only on the sanitary napkin 10, and the wearer has a strong sense of unity between the sanitary napkin 10 and the clothes. . In the present invention, when the sanitary napkin is extensible, when both ends of the sanitary napkin are gripped by a chuck of a tensile tester with a width of 10-20 mm and a tension of 700 mN per 25 mm width is applied. Furthermore, it means that the sanitary napkin extends at least 3% without damage between the chucks. The sanitary napkin is preferably extended at a speed of 100 mm / min.

  Further, the sanitary napkin 10 is formed with the central dividing portion 33a in the absorbent body 13, so that when the portion on the center line P at both end portions 17 is grasped and pulled in the longitudinal direction A, it is joined at both side portions 16. The surface sheet layer 11 and the back surface sheet layer 12 have a characteristic of being easily stretched without being affected. Therefore, the wearer who wants to selectively wear the sanitary napkin 10 according to the present invention from among a large number of commercially available sanitary napkins, by pulling both end portions of the sanitary napkin obtained in the longitudinal direction A, Knowing the existence of the characteristics of the sanitary napkin 10, the sanitary napkin 10 can be selected without hesitation.

  FIG. 6 is a partially broken perspective view of the package 40 formed by the sanitary napkin 10 together with the plastic film 45 that is a sheet-like packaging material. The sanitary napkin 10 has a separator 36 superimposed on the back sheet layer 12 so as to cover the fastening area 35, and is folded in the longitudinal direction A with the top sheet layer 11 inside. In the package 40, the separator 36 is bonded to the plastic film 45 so as not to be peeled off, and a part of the plastic film 45 forms a flap 41. In the flap 41, both side portions 42 are detachably joined to the main body portion 43 of the packaging body 40 to form a seal portion in the packaging body 40, and an intermediate portion between the side portion 42 and the side portion 42 is interposed via the tape 46. The main body portion 43 is sealed. The tape 46 is fixed to the flap 41 so as not to be peeled off, and is fixed to the main body portion 43 so as to be peelable. When the tape 46 is held and pivoted in the direction indicated by the arrow R, the flap 41 pivots with the side portions 42 peeled off from the main body portion 43, and the package 40 has an opening for taking out the sanitary napkin 10. It is formed between the flap 41 and the main body portion 43, and through the opening, one end portion 17a of the both end portions 17 of the sanitary napkin 10 can be seen. At the same time, at least a part of the end pleat region 29a formed so as to face the end 17a among the plurality of pleat regions 29 can be seen. The separator 36 covering the fastening area 35 (see FIG. 2) of the sanitary napkin 10 moves so as to rotate integrally with the flap 41 indicated by the phantom line, and is peeled off from the fastening area 35.

  In order to take out the sanitary napkin 10 from the package 40, the end portion 17a is grasped as an end portion for grasping with one hand, and at the same time, the flap 41 in a virtual line state is grasped with the other hand, What is necessary is just to pull in the opposite direction so that it may pull apart. In such a package 40, if an opening is formed in the required portion, the presence of the end pleat region 29a can be easily recognized when the sanitary napkin 10 is to be taken out, and the end portion for gripping can be obtained. When starting to pull 17a, it is possible to feel the extension of the end pleat region 29a while directly looking at the end pleat region 29a facing the end 17a. Therefore, the wearer can naturally recognize that what he is going to wear is the sanitary napkin 10 according to the present invention.

  In addition, the sanitary napkin 10 may form the package 40 without using the separator 36 in the illustrated example. In the packaging body 40 in that case, the plastic film 45 is detachably joined to the fastening region 35 and also serves as a separator.

  FIG. 7 is a partial cutaway view showing a skin facing surface 11a of a sanitary napkin 110 which is an example of an embodiment of the present invention. However, the same reference numerals as those of the sanitary napkin 10 are used for portions having the same functions as those of the sanitary napkin 10 illustrated in FIG.

  The sanitary napkin 110 has both side portions 16 that define a curved line, and each side portion 16 is formed with a wing portion 70 that protrudes in the lateral direction B. The wing portion 70 is a well-known and commonly used sanitary napkin. When the sanitary napkin 110 is worn, the wing portion 70 is folded on the outer surface (not shown) of the crotch region in the clothing, and the fastening region 35 (see FIG. 8). It is fastened to the outer surface using a detachable.

  Such a sanitary napkin 110 has a liquid-permeable surface sheet layer 11 having extensibility in the longitudinal direction A as in the sanitary napkin 10, and an elastic extensibility and contractibility in the longitudinal direction A. It has a liquid-permeable back sheet layer 12 and a body fluid-absorbing absorber 13 that is interposed between the top sheet layer 11 and the back sheet layer 12 and has extensibility in the longitudinal direction A. As the absorber 13, the one illustrated in FIG. 3 is used. The side part 16 and the wing part 70 are formed by overlapping a water-repellent or liquid-impervious leak-proof sheet 71 and the back sheet layer 12 and joining each other via a hot melt adhesive (not shown). Yes. The leak-proof sheet 71 also has a portion 72 joined to the top sheet layer 11 via a hot melt adhesive (not shown). However, in the portion 72, the inner edge portion 72 a extending in the longitudinal direction A is in a non-bonded state with respect to the topsheet layer 11 except for both end portions 17 of the sanitary napkin 110. In the sanitary napkin 10, the leak-proof sheet 71 used in this manner forms a leak-proof portion 73 that can prevent side leakage or oozing of body fluid. The leak-proof sheet 71 in the case of water repellency can be obtained by using a nonwoven fabric of thermoplastic synthetic fibers and, if necessary, by using a water-repellent treatment of the nonwoven fabric. The liquid-impermeable leak-proof sheet 71 can be obtained by using a plastic film such as a polyethylene film. The plastic film can also be used in the form of a composite sheet in which nonwoven fabrics of thermoplastic synthetic fibers that are soft to the touch are laminated.

  In the sanitary napkin 110, the central portion 75 in the lateral direction B where the top sheet layer 11, the absorber 13 and the back sheet layer 12 overlap each other is recessed from the top sheet layer 11 toward the back sheet layer 12, A large number of dot-like pressing portions 76 that are separated from each other are formed. The pressing part 76 can be obtained by embossing the central portion 75, more preferably by embossing under heating. In the pressing part 76, the surface sheet layer 11, the absorber 13, and the back surface sheet layer 12 are integrated by mechanically entanglement or welding. In the sanitary napkin 110 in which the pressing part 76 is formed, it becomes easy to make the surface sheet layer 11 and the absorber 13 extend and contract together with the back surface sheet layer 12. In the sanitary napkin 110, the compressed portions 19 are also arranged along the periphery.

  FIG. 8 is a partial cutaway view showing the clothing facing surface 12 a of the sanitary napkin 110. Similar to the sanitary napkin 10, the back sheet layer 12 is elastically stretched in the longitudinal direction A with the air-impermeable and impermeable first sheet 25 in which a pleat 28, a pleat region 29, and a non-pleat region 30 are formed. And a second sheet 26 formed by a plurality of contractible strips 27. The first sheet 25 in the wing portion 70 includes at least a non-pleated region 30 of the pleated region 29 and the non-pleated region 30, and a fastening region 35 is formed in the non-pleated region 30. Yes. The fastening area 35 can be covered and protected by a separator similar to the separator 36 used for the sanitary napkin 10. When the pleated region 29 is formed there, the wing portion 70 may be difficult to bend toward the outer surface of the crotch region in the clothing when the sanitary napkin 110 is attached to the clothing. When it is desired to avoid such a case, the wing portion 70 is preferably one in which the pleat region 29 is not formed. The plurality of fastening areas 35 formed in the front-rear direction A of the sanitary napkin 110 are separated from each other by a large distance, for example, are formed only at both end portions 17 as shown in the drawing, so that the fastening is performed. The region 35 does not prevent the sanitary napkin 110 from extending in the longitudinal direction A. The formation of the fastening area 35 as described above can be applied to the sanitary napkin 10 illustrated in FIG.

  FIG. 9 is a view similar to FIG. 4 of the sanitary napkin 210 showing an example of the embodiment of the present invention, and a sanitary napkin is provided in a portion having the same function as the function of the sanitary napkin 10 of FIG. The same reference numerals as 10 are used.

  In the sanitary napkin 210, as the surface sheet layer 11, a plurality of pleats 80 crossing the absorbent body 13, a plurality of pleat regions 81 formed by a plurality of adjacent pleats 80, a pleat region 81 and a pleat region 81, A polyethylene resin film in which a non-pleated region 82 and a large number of liquid-permeable openings 85 are formed is used. When the top sheet layer 11 is pulled in the longitudinal direction A, the pleat region 81 is widened, so that the top sheet layer 11 easily extends in the longitudinal direction A. The sanitary napkin 210 also uses the back sheet layer 12 and the absorber 13 used in the sanitary napkin 10. It is preferable that the pleat region 81 of the top sheet layer 11 and the pleat region 29 of the back sheet layer 12 face each other through the central dividing portion 33a in the absorbent body 13 to form an easily stretchable portion 85.

  FIG. 10 is also a view similar to FIG. 9 of the sanitary napkin 310 showing an example of the embodiment of the present invention, and the portions having the same functions as those of the sanitary napkin 10, 110, 210 have these physiology. The same reference numerals as those used for the napkins 10, 110, and 210 are used. In the sanitary napkin 310, the liquid-permeable plastic film used as the surface sheet layer 11 of the sanitary napkin 210 in FIG. 9 is used as the third sheet 83 for forming the facing surface 11a against the wearer's skin. . Between the pleated region 81 and the absorber 13 in the third sheet 83, a fourth sheet 84 that is elastically extendable in the longitudinal direction A is interposed. However, the fourth sheet 84 is positioned so as to overlap with the pleat region 81 and is in an elastically relaxed state, and is elastically stretchable bonded to the third sheet 83 via the hot melt adhesive 86. A plurality of strips 87 are formed. Most of the non-pleated region 82 does not overlap the strip 87 and faces the absorber 13. The back sheet layer 12 and the absorber 13 are the same as those used in the sanitary napkin 210. In an example of the sanitary napkin 310, the strip 87 in the top sheet layer 11 and the strip 27 in the back sheet layer 12 face each other via the central dividing portion 33 a of the absorbent body 13.

  The sanitary napkin 310 formed in this way also has a portion 85 that can be easily stretched, and when the stretching force in the longitudinal direction A acts, the top sheet layer 11 and the back sheet layer 12 are elastic at the portion 85. When the extension force is released and the extension force is released, it tries to return to the state before extension with a strong recovery force. However, in the present invention, the sanitary napkin 310 may be configured such that the back sheet layer 12 does not include the second sheet 26 and is formed only by the first sheet 25.

  The bodily fluid-absorbing wearing article according to the present invention described taking the sanitary napkin 10, 210, 310 as an example, absorbs for bodily fluid treatment such as a panty liner for absorbing sag or a urine absorbing pad used by incontinence patients, etc. It can be implemented as a sex article. In addition, when the body fluid-absorbing wearing article is relatively thin, the effect is remarkable.

  FIG. 11 is a side view of a pair of pleat forming rolls 92a and 92b used to obtain the first sheet 25 (see FIGS. 2 and 4) having a pleat region 29. FIG. In FIG. 11, a first web 91 formed of a thermoplastic film for obtaining the first sheet 25 in the back sheet layer 12 runs continuously in the machine direction (not shown) and is orthogonal to the machine direction. It enters between a pair of pleat forming rolls 92a and 92b extending in the intersecting direction CD. In the pleat forming rolls 92a and 92b, corrugated portions 93a and 93b meshing with each other are arranged in the cross direction CD which is the axial direction of the roll. Further, in the corrugated portions 93a and 93b, peaks and valleys are alternately arranged in the cross direction CD, and the peaks and valleys of the corrugated portion 93a are connected to the valleys of the corrugated portion 93b. It has a complementary shape to the peak. The first web 91 sandwiched between the corrugated portions 93a and 93b is plastically deformed so as to follow the corrugated shape of the rolls 92a and 92b, and the first web 91 has a plurality of pleats 128 and a plurality of strips. Pleats 128 are formed, which are adjacent to each other. Between the adjacent pleat areas 129 and 129, a non-pleated area 130 without the pleat 128 is formed. In order to facilitate plastic deformation of the first web 91, the rolls 92a and 92b can be used in a heated state. The first web 91 in which the pleat region 129 is formed can be the first sheet 25 by cutting it into a required shape. However, the first web 91 has a strip 27 ( If the continuous body of FIG.2, 4) is joined and it cuts into a required shape after that, it will become what can be used as the back surface sheet layer 12. FIG.

  The above-described present invention described so far can be arranged at least as follows.

Absorption of bodily fluid between a top sheet layer that forms a skin facing surface and a back sheet layer that forms a clothing facing surface, having a vertical direction, a horizontal direction, and a thickness direction orthogonal to each other. A body is interposed, the top sheet layer is liquid permeable in at least a part of the portion covering the absorber, and the back sheet layer is liquid impermeable in a portion covering the absorber, Pad-like body fluid absorption in which a sheet layer and the back sheet layer are joined at a portion extending from the absorber, and the absorbent is joined to at least one of the top sheet layer and the back sheet layer A sex wear article,
Each of the top sheet layer, the back sheet layer and the absorber has extensibility in the longitudinal direction,
At least one of the top sheet layer and the back sheet layer has a plurality of pleats extending in the lateral direction in parallel, and the pleats are widened in the longitudinal direction to express the extensibility. And the first sheet that crosses the absorber and can be repeatedly elastically stretched and contracted in the longitudinal direction, and is joined to the first sheet in an elastically relaxed state and the first sheet. It is formed by the 1st sheet | seat and the 2nd sheet | seat interposed between the said absorbers.

The present invention has at least the following embodiments.
(1) In the first sheet, a plurality of parallel pleats are adjacent to each other to form a pleat region, and a plurality of the pleat regions are spaced apart from each other and arranged in the longitudinal direction, and the pleat regions are arranged between the pleat regions. Has a non-extensible and flat non-pleated region in the longitudinal direction.
(2) The second sheet is formed by a plurality of elastic strips that overlap the pleated regions, cross the absorber, and are separated from each other in the non-pleated region in the longitudinal direction.
(3) The said 1st sheet | seat is formed with the air-permeable liquid-impermeable plastic film.
(4) In the part of the non-pleated region, the fastening region detachable from clothing is formed.
(5) The said absorber has the division | segmentation site | part which penetrates the said absorber in the said thickness direction and divides a part of said absorber in the said vertical direction.
(6) The absorber is the segmented portion, and extends in the lateral direction intersecting with a center line that bisects the lateral dimension, and the absorber extends in the longitudinal direction on the center line. And a plurality of the central dividing parts are arranged in the longitudinal direction.
(7) The absorbent body has side edges extending in the longitudinal direction on both sides in the lateral direction, and the side edges are the divided portions, and extend in the lateral direction toward the inside of the absorbent body. A plurality of side edge dividing portions that extend and divide the side edges in the longitudinal direction are formed.
(8) In the body fluid absorbent wearing article, a wing portion protruding in the lateral direction is formed, and the back sheet layer extending from the side edge of the absorber extends to the wing portion. The back sheet layer in the wing portion includes at least the non-pleated region of the pleated region and the non-pleated region.
(9) The top sheet layer and the back sheet layer are joined at a plurality of pressing parts formed along the periphery of the body fluid-absorbing wearing article, and between the pressing parts adjacent to each other along the periphery. These parts are joined via an extensible adhesive.
(10) On each side in the lateral direction of the body fluid-absorbing wearing article, a leak-proof portion is formed by an extensible nonwoven fabric that covers a part of the surface sheet layer and extends in the longitudinal direction.
(11) The non-woven fabric of the leak-proof portion overlaps and is joined to the back sheet layer at each of the both sides of the body fluid-absorbing wearing article and the wing portion.
(12) The non-woven fabric and the back sheet layer of the leak-proof portion overlap along the peripheral edge of the body fluid-absorbing wearing article, and are joined at the plurality of compressed portions formed along the peripheral edge, In the said site | part between the said pressing parts adjacent along a periphery, it has joined through the said extensible adhesive agent.
(13) The part is formed in the non-pleated region.
(14) The body fluid-absorbing wearing article is packaged by being wrapped with a sheet-like material, and in the packaging body, one end portion of both end portions in the longitudinal direction of the body fluid-absorbing wearing article. Becomes a gripping end portion used when taking out the body fluid-absorbing wearing article from the package body, and in the longitudinal direction, the pleat region is between the gripping end portion and the fastening region. An end pleat region that is one of a plurality and that faces the gripping end is formed, and an opening for taking out the body fluid-absorbing wearing article is formed at a required portion of the package. The opening is packaged so that the end pleat region can be seen together with the holding end.

10 Body fluid-absorbing wearing articles (Sanitary napkins)
DESCRIPTION OF SYMBOLS 11 Surface sheet layer 11a Skin opposing surface 12 Back sheet layer 12a Clothing opposing surface 13 Absorber 17 Both ends 19 Pressing part 21 Periphery 22 Adhesive 25 1st sheet 26 2nd sheet 27 Strip 28 Pleated 29 Pleated area 30 Non-pleated area 33 cutting part 33a central parting part 33b side edge parting part 35 fastening area 70 wing part A longitudinal direction B transverse direction C thickness direction

The present invention has at least the following embodiments.
(1) In the first sheet, a plurality of parallel pleats are adjacent to each other to form a pleat region, and a plurality of the pleat regions are spaced apart from each other and arranged in the longitudinal direction, and the pleat regions are arranged between the pleat regions. Has a non-extensible and flat non-pleated region in the longitudinal direction.
(2) The second sheet is formed by a plurality of elastic strips that overlap the pleated regions, cross the absorber, and are separated from each other in the non-pleated region in the longitudinal direction.
(3) The said 1st sheet | seat is formed with the air-permeable liquid-impermeable plastic film.
(4) In the part of the non-pleated region, the fastening region detachable from clothing is formed.
(5) The said absorber has the division | segmentation site | part which penetrates the said absorber in the said thickness direction and divides a part of said absorber in the said vertical direction.
(6) The absorber is the segmented portion, and extends in the lateral direction intersecting with a center line that bisects the lateral dimension, and the absorber extends in the longitudinal direction on the center line. And a plurality of the central dividing parts are arranged in the longitudinal direction.
(7) The absorbent body has side edges extending in the longitudinal direction on both sides in the lateral direction, and the side edges are the divided portions, and extend in the lateral direction toward the inside of the absorbent body. A plurality of side edge dividing portions that extend and divide the side edges in the longitudinal direction are formed.
(8) In the body fluid absorbent wearing article, a wing portion protruding in the lateral direction is formed, and the back sheet layer extending from the side edge of the absorber extends to the wing portion. The back sheet layer in the wing portion includes at least the non-pleated region of the pleated region and the non-pleated region.
(9) The top sheet layer and the back sheet layer are joined at a plurality of pressing parts formed along the periphery of the body fluid-absorbing wearing article, and between the pressing parts adjacent to each other along the periphery. In the joining part , it is joined via an extensible adhesive.
(10) On each side in the lateral direction of the body fluid-absorbing wearing article, a leak-proof portion is formed by an extensible nonwoven fabric that covers a part of the surface sheet layer and extends in the longitudinal direction.
(11) The non-woven fabric of the leak-proof portion overlaps and is joined to the back sheet layer at each of the both sides of the body fluid-absorbing wearing article and the wing portion.
(12) The non-woven fabric and the back sheet layer of the leak-proof portion overlap along the peripheral edge of the body fluid-absorbing wearing article, and are joined at the plurality of compressed portions formed along the peripheral edge, In the junction part between the said pressing parts adjacent along a periphery, it has joined via the said extensible adhesive agent.
(13) The joint portion between the compressed parts is formed in the non-pleated region.
(14) The body fluid-absorbing wearing article is packaged by being wrapped with a sheet-like material, and in the packaging body, one end portion of both end portions in the longitudinal direction of the body fluid-absorbing wearing article. Becomes a gripping end portion used when taking out the body fluid-absorbing wearing article from the package body, and in the longitudinal direction, the pleat region is between the gripping end portion and the fastening region. An end pleat region that is one of a plurality and that faces the gripping end is formed, and an opening for taking out the body fluid-absorbing wearing article is formed at a required portion of the package. The opening is packaged so that the end pleat region can be seen together with the holding end.

Claims (15)

Absorption of bodily fluid between a top sheet layer that forms a skin facing surface and a back sheet layer that forms a clothing facing surface, having a vertical direction, a horizontal direction, and a thickness direction orthogonal to each other. A body is interposed, the top sheet layer is liquid permeable in at least a part of the portion covering the absorber, and the back sheet layer is liquid impermeable in a portion covering the absorber, Pad-like body fluid absorption in which a sheet layer and the back sheet layer are joined at a portion extending from the absorber, and the absorbent is joined to at least one of the top sheet layer and the back sheet layer A sex wear article,
Each of the top sheet layer, the back sheet layer and the absorber has extensibility in the longitudinal direction,
At least one of the top sheet layer and the back sheet layer has a plurality of pleats extending in the lateral direction in parallel, and the pleats are widened in the longitudinal direction to express the extensibility. And the first sheet that crosses the absorber and can be repeatedly elastically stretched and contracted in the longitudinal direction, and is joined to the first sheet in an elastically relaxed state and the first sheet. A body fluid-absorbing wearing article, comprising: a sheet and a second sheet interposed between the absorbent body.   In the first sheet, a plurality of juxtaposed pleats are adjacent to each other to form a pleat region, and a plurality of the pleat regions are spaced apart from each other and arranged in the longitudinal direction, and the pleat regions are arranged between the longitudinal pleat regions. The body fluid-absorbing wearing article according to claim 1, wherein a non-extensible and flat non-pleated region is formed in the direction.   3. The body fluid absorbency according to claim 2, wherein the second sheet is formed by a plurality of elastic strips that overlap each of the pleated regions, cross the absorber, and are separated from each other in the non-pleated region in the longitudinal direction. Wearing articles.   The bodily fluid absorptive wearing article according to any one of claims 1 to 3, wherein the first sheet is formed of a breathable liquid-impervious plastic film.   The body fluid-absorbing wearing article according to claim 2, wherein a fastening area detachably attached to the clothes is formed in a part of the non-pleated area.   The body fluid-absorbing wearing article according to claim 2, wherein the absorbent body is formed with a divided portion that penetrates the absorbent body in the thickness direction and divides a part of the absorbent body in the longitudinal direction.   The absorber is the parting portion, extends in the transverse direction intersecting with a center line that bisects the lateral dimension, and divides the absorber in the longitudinal direction on the center line. The body fluid-absorbing wearing article according to claim 6, wherein the article has a central part, and a plurality of the central part is arranged in the longitudinal direction.   The absorber has side edges extending in the longitudinal direction on both sides in the lateral direction, and the side edges are the divided portions and extend in the lateral direction toward the inside of the absorber. The body fluid-absorbing wearing article according to claim 6 or 7, wherein a plurality of side edge dividing portions for dividing the side edge in the longitudinal direction are formed.   In the bodily fluid absorbent wearing article, a wing portion in a state of protruding in the lateral direction is formed, and the back sheet layer extending from the side edge of the absorber extends to the wing portion, and The body fluid-absorbing wearing article according to claim 8, wherein the back sheet layer in the wing portion includes at least the non-pleated region of the pleated region and the non-pleated region.   The top sheet layer and the back sheet layer are joined at a plurality of compressed parts formed along the peripheral edge of the body fluid-absorbing wearing article, and at a portion between the compressed parts adjacent to each other along the peripheral edge. The body fluid-absorbing wearing article according to claim 2, which is bonded via an extensible adhesive.   The body fluid according to claim 9, wherein a leak-proof portion is formed on each of both lateral sides of the body fluid-absorbing wearing article by an extensible nonwoven fabric that covers a part of the surface sheet layer and extends in the longitudinal direction. Absorbent wearing article.   The body fluid-absorbing wearing article according to claim 11, wherein the non-woven fabric of the leak-proof portion overlaps and is joined to the back sheet layer at each of the both sides of the body fluid-absorbing wearing article and the wing part.   The non-woven fabric and the back sheet layer of the leak-proof portion overlap along the peripheral edge of the body fluid-absorbing wearing article, are joined at a plurality of pressing portions formed along the peripheral edge, and are adjacent along the peripheral edge. The body fluid-absorbing wearing article according to claim 11, wherein the parts between the compressed parts that fit together are joined via the extensible adhesive.   The body fluid-absorbing wearing article according to any one of claims 10 to 13, wherein the part is formed in the non-pleated region.   The body fluid-absorbing wearing article is packaged by being wrapped with a sheet-like material, and in the packaging body, one end portion of the both ends in the longitudinal direction of the body fluid-absorbing wearing article is the packaging. A gripping end used when taking out the body fluid-absorbing wearing article from the body, and a plurality of the pleat regions between the gripping end and the fastening region in the longitudinal direction. When an end pleat region facing the gripping end is formed, and an opening for taking out the body fluid-absorbing wearing article is formed at a required portion of the package, The body fluid-absorbing wearing article according to claim 5, wherein the opening is packaged so that the end pleat region can be seen together with the holding end.

Images