TW201609063A - Body fluid-absorbing article for wearing - Google Patents

Abstract

Provided is a body fluid-absorbing article for wearing, that is capable of stretching and shrinking. The body fluid-absorbing article for wearing, one example thereof being a sanitary napkin (10), has a top sheet (11), a back sheet (12), and an absorbent body (13) interposed between these sheets (11, 12). The top sheet (11) and the back sheet (12) have stretching properties in the longitudinal direction (A) thereof. At least one of these sheets (11, 12) is formed from: a first sheet (25) exhibiting stretching properties as a result of a plurality of pleats (28) that extend in the horizontal direction (B), being spread out in the longitudinal direction (A); and a second sheet (26) being elastically stretchable in the longitudinal direction (A), joining the first sheet (25) in an elastically relaxed state, and being interposed between the first sheet (25) and the absorbent body (13).

Description

Body fluid absorbent wearing article

The present invention relates to a body fluid absorbent wearing article which is suitably used as a sanitary napkin, a urine absorbing pad or the like.

A cushion-like body fluid absorbent wearing article such as a sanitary napkin or a urine absorbing pad which is used for the inner surface of the crotch region of a pant-type article such as a trousers is known. Moreover, such a wearing article is also known to be able to extend toward the front and rear directions of the user's body.

For example, the absorbent article described in Japanese Patent No. 3998712 (Patent Document 1) has a stretchable portion spanning the absorbent article. The stretchable portion can extend toward the length of the absorbent article. The surface sheet and the back sheet of the stretchable portion are formed with a plurality of wrinkles.

The stretchable absorbent article described in JP-A-2013-385 (Patent Document 2) includes a stretchable back sheet and a shrinkable absorbent structure, and has a stretched back sheet and a non-shrinkable state. The absorbent structures are in a state of being fixed to each other. The absorbent structure can be shrunk as the back sheet shrinks. On the back sheet, for example, an elastomer film or an embossed film is used. As one of the sanitary napkins The absorbent article of the example forms a contracted state when it is not stretched, and becomes an extended state when a tensile load of a desired size acts. The sanitary tampon thus formed can be stretched under the crotch of the undergarment.

[Previous Technical Literature] [Patent Literature]

[Patent Document 1] Japanese Patent No. 3998712

[Patent Document 2] Japanese Patent Laid-Open Publication No. 2013-385

In the conventional sanitary napkin in which the surface sheet and the back sheet are wrinkled to provide the stretchable portion to the sheet, it is difficult to quickly shrink and recover the stretched portion after stretching. When the absorbent structure in the non-shrinkable state is fixed to the back sheet in the stretched state to produce a conventional absorbent article having a stretchable absorbent article, the back sheet is made liquid-permeable and liquid-impermeable. It is necessary to form a composite sheet by sandwiching a plurality of linear elastic members extending in parallel with each other by a gas-permeable liquid-impermeable film and a non-woven fabric, and then stretching the composite sheet.

An object of the present invention is to provide an improved cushion-like body fluid-absorbent wearing article which can solve such problems in the prior art.

In order to solve the aforementioned problems, the present invention is directed to The body fluid absorbent wearing article, wherein the cushion-like body fluid absorbent wearing article has a longitudinal direction, a lateral direction, and a thickness direction orthogonal to each other, and a surface sheet layer and a garment pair forming the skin facing surface in the thickness direction a body fluid absorbing absorbent body between the back sheet layers of the facing surface, at least a part of the portion of the surface sheet layer covering the absorber is liquid permeable, and the portion of the back sheet layer covering the absorber is liquid impermeable. The surface sheet layer and the back sheet layer are joined to a portion extending from the absorber, and the absorbent system is joined to at least one of the surface sheet layer and the back sheet layer.

The features of the invention are as follows. Each of the surface sheet layer, the back sheet layer, and the absorber has stretchability in the longitudinal direction. At least one of the surface sheet layer and the back sheet layer is formed of a first sheet and a second sheet; the first sheet is arranged in parallel with a plurality of pleats extending in the lateral direction, and the pleats are formed toward the front side Longitudinally expanding to exhibit the aforementioned stretchability; the second sheet is stretched across the absorbent body and elastically stretches and contracts in the longitudinal direction, and is elastically relaxed in engagement with the first sheet and interposed between the first sheet and Between the aforementioned absorbers.

In the body fluid absorbent wearing article of the present invention, the first sheet and the second sheet are joined to each other, and the first sheet exhibits stretchability by expanding the pleats, and the second sheet can be elastically stretched and contracted repeatedly. Since it is in a state of being relaxed, the first sheet in the stretched state is easily elastically restored to the state before stretching.

10‧‧‧ Body fluid absorbent wearing articles (physiological sanitary napkins)

11‧‧‧Surface sheet

11a‧‧‧ Skin facing

12‧‧‧Back foil layer

12a‧‧‧ clothing opposite

13‧‧‧Acceptor

17‧‧‧ Both ends

19‧‧‧Squeeze Department

21‧‧‧ Periphery

22‧‧‧Adhesive

25‧‧‧1st sheet

26‧‧‧2nd sheet

27‧‧‧With film

28‧‧‧pleas

29‧‧ pleated area

30‧‧‧ Non-pleated area

33‧‧‧parts

33a‧‧‧Central partition

33b‧‧‧Side edge separation

35‧‧‧fixed area

70‧‧‧ wing

A‧‧‧ portrait

B‧‧‧ Landscape

C‧‧‧ Thickness direction

The following drawings show not only the specific embodiments of the present invention, but also the indispensable structures, optional configurations, and preferred embodiments of the invention.

Fig. 1 is a partially cutaway plan view showing a skin facing surface of a body fluid absorbent wearing article (physiological sanitary napkin).

Fig. 2 is a partially cutaway plan view showing the garment facing surface of the body fluid absorbent wearing article of Fig. 1;

Figure 3 is a plan view of the absorbent body.

Fig. 4 is a view showing the cut surface of the line IV-IV of Fig. 1.

Fig. 5 is a view similar to Fig. 4 when the sanitary napkin is in a stretched state.

Figure 6 is a partially cutaway perspective view of a separately packaged sanitary napkin.

Fig. 7 is a partially cutaway plan view showing a skin facing surface of a sanitary napkin according to an embodiment of the embodiment.

Fig. 8 is a partially cutaway plan view showing the garment facing surface of the sanitary napkin of Fig. 7.

Fig. 9 is a view similar to Fig. 4 showing an example of the embodiment.

Fig. 10 is a view similar to Fig. 9 showing an example of the embodiment.

Fig. 11 is a side view of a pleat forming roller.

The body fluid absorbent wearing of the present invention will be described in detail with reference to the accompanying drawings. Use items.

Fig. 1 is a partial cross-sectional view showing the skin facing surface 11a of the sanitary napkin 10 as an example of the body fluid absorbent wearing article. The sanitary napkin 10 has a surface sheet layer 11, a back sheet layer 12, and an absorbent body 13 formed with an opposite surface 11a with respect to a user's skin (not shown), the back sheet layer 12 An opposing surface 12a (see FIG. 2) for the clothing of the user is formed, and the absorbent body 13 is a body fluid absorbent absorber interposed between the two sheet layers 11, 12. The surface sheet layer 11 is such that at least a part of the coating absorber 13 is liquid permeable, and the back sheet layer 12 is a liquid impervious portion in which at least the portion of the absorber 13 is covered. The sanitary napkin 10 has a longitudinal, lateral, and thickness direction indicated by double-headed arrows A, B, and C (refer to FIG. 4 together), and the longitudinal direction A is sometimes referred to as a longitudinal direction or a front-rear direction. Lateral B is sometimes referred to as the width direction. The thickness direction C is a direction in which the surface sheet layer 11, the absorber 13, and the back sheet layer 12 overlap. The sanitary napkin 10 has a side portion 16 extending toward the longitudinal direction A on both sides of the lateral direction B, and an end portion 17 extending toward the lateral direction B at both ends of the longitudinal direction A, respectively. The peripheral portion 18 of the sanitary napkin 10 formed by the side portions 16 and the end portions 17 is intermittently formed with a plurality of press portions 19 that join the overlapping surface sheet layer 11 and the back sheet layer 12. The surface sheet layer 11 and the back sheet layer 12 are joined to each other at a portion between the adjacent press portions 19 in the longitudinal direction A through the adhesive, preferably through an elastically stretchable adhesive 22 containing a rubber-based resin component. Engage.

The surface sheet layer 11 has a stretchability toward the longitudinal direction A, More preferably, it is formed of a liquid-permeable non-woven fabric or a perforated plastic film having elastic stretchability. The surface sheet layer 11 formed by the non-woven fabric is obtained by using a spunbonded nonwoven fabric in which the constituent fibers are mainly oriented in the machine direction in a state in which the mechanical direction is aligned in the lateral direction B, and may also be used by using a crimping-containing sheet. A non-woven fabric of thermoplastic synthetic fibers or a nonwoven fabric comprising elastic fibers such as polyurethane fibers is obtained. Further, it can also be obtained by forming a plurality of slits extending in the lateral direction B with respect to the non-stretchable nonwoven fabric. The surface sheet layer 11 formed of a plastic film can also be obtained by forming a pleated region similar to the pleated region 29 (see FIGS. 2 and 4) to be described later on the liquid-permeable perforated polyethylene resin film. It can be obtained by forming a plurality of slits extending toward the lateral direction B and parallel to each other to the liquid-permeable perforated polyethylene resin film. The surface sheet layer 11 can also be formed by a film having a liquid pervious porous body.

In the present invention, when the sheet layer such as the surface sheet layer 11 is stretched, it means that the test piece having a size of 50 mm and 25 mm in the longitudinal direction A and the transverse direction B obtained from the sheet layer is held at both ends of the longitudinal direction A every 10 mm. The method is installed in a tensile tester, and the length of the longitudinal direction A is 30 mm at a speed of 100 mm/min, and when the stretching force of 30 mN is applied to the longitudinal direction A for every 25 mm of the lateral B dimension, the elongation is 3% or more. That is, it is a length which is 1.03 times or more of the length before the extension force acts. Moreover, when the sheet layer has elastic stretchability, it means that the stretching force acts to stretch the sheet layer to a length of 2 times in the longitudinal direction A, and then immediately releases the stretching force to return the length to the length before the stretching force is applied. 1.5 times or less of the nature. A sheet layer having a length not returning to 1.5 times or less has a non-elastic stretch Exhibitors.

Fig. 2 is a partial cross-sectional view showing the laundry facing surface 12a of the sanitary napkin 10. The back sheet layer 12 forming the garment facing surface 12a is liquid-impermeable, more preferably liquid-permeable and liquid-impermeable, and includes a surface sheet layer 11 and a first sheet 25 having the same shape and a second sheet 26, the first sheet The sheet 26 is formed by a plurality of strips 27 extending across the absorbent body 13 in the lateral direction B and elastically extending and contracting in the longitudinal direction A.

The first sheet 25 which is liquid-impermeable is formed, for example, of a plastic film such as a polyethylene resin film. The first sheet 25 which is a liquid-impermeable, liquid-impermeable type is formed, for example, by a plastic film such as an extended polyethylene resin film containing fine particles of an inorganic substance such as barium sulfate as a filler. A plurality of pleats 28 are formed in the first sheet 25, and the pleats 28 extend across the absorber 13 and extend from one side portion 16 to the other side portion 16. The pleats 28 in turn cause the contigs 29 to form a pleat region 29 with each other in the longitudinal direction A. Between the pleat regions 29 and 29 arranged in the longitudinal direction A, a flat non-pleated region 30 in which the pleats 28 are absent is formed. Since the cross-sectional shape of the longitudinal direction A of the pleats 28 is undulated as illustrated in FIG. 4, in order to prevent the pleats 28 from stimulating the user's skin at the side portions 16, the pleats 28 are not only in the press section 19, but also It is preferable that the press sections 19 are crushed between each other.

The tape piece 27 is formed of a rubber-elastic plastic film such as a polyurethane film, and is interposed between the first sheet 25 and the absorber 13 so as to overlap the pleated region 29, and more preferably to be pleated. The entire region 29 is in a state of being overlapped with the pleated region 29, and is joined to the first sheet 25 through the hot-melt adhesive 37 (see FIG. 4) in an elastically relaxed state.

Each of the strips 27 is separated in the longitudinal direction A and is not covered by the entire region of the non-pleated regions 30 between the pleat regions 29 and 29. Therefore, each of the non-pleated regions 30 is opposed to the absorbent body 13 without the belt piece 27 interposed therebetween. The adhesive region 35 that is releasably adhered to the laundry is formed by applying an adhesive to the facing surface 12a of the garment in the non-pleated region 30. In a preferred example of the sanitary napkin 10, the fixing 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 is opposed to the pleated region 29. That is, in the vicinity of the end portion 17, the gusset region 29 is not formed instead of the fixing portion 35. From the time when the sanitary napkin 10 is manufactured to the time of use, the fixing zone 35 is covered and protected by the spacer 36 shown by the imaginary line.

3 is a plan view of the absorber 13. The absorber 13 is formed by compressing an aggregate of water-absorbent fibers, or molding a mixture of superabsorbent polymer particles and water-absorbent fibers, or coating the compression-formed person with a tissue or a water-permeable nonwoven fabric. It may contain a binder such as a water-soluble binder. The water absorbent fibers include rayon fibers, short fibers of acetate fibers, pulverized pulp, and the like. The absorber 13 has a side edge 31 extending toward the longitudinal direction A on both sides of the lateral direction B, and an end edge 32 extending toward the lateral direction B at both ends of the longitudinal direction A. The absorber 13 is formed with a plurality of central partition portions 33a and a plurality of side edge partitioning portions 33b which are attached to the center line P extending toward the longitudinal direction A, partially partitioning the absorber 13 toward the longitudinal direction A and Extending in the lateral direction B, the plurality of side edge partitioning portions 33b extend toward the lateral direction B from the side edge 31 toward the center line P and partition a portion of the absorbent body 13 in the longitudinal direction A on the side of the center line P. The central partition 33a and the side edge partition 33b are The center line P is preferably formed symmetrically. However, the absorber 13 may also be formed with a partition 33 which does not intersect the center line P and the side edge 31 and which separates a part of the aforementioned absorbent body 13 in the longitudinal direction A, or which is irregularly distributed and separated in the longitudinal direction A. A part of the absorber 13. The absorber 13 is penetrated in the thickness direction C (see FIG. 4). The central partition portion 33a and the side edge partition portion 33b can be obtained by forming a slit in the absorber 13. Further, when the outer shape of the absorber 13 is formed by using a molding die, the partition portion can be simultaneously produced.

The absorber 13 of Fig. 3 is joined to the surface sheet layer 11 and/or the back sheet layer 12 by using a hot melt adhesive (not shown), and the center partition portion 33a and the side edge partition portion 33b are closed. The absorber 13 in a state of being joined to the back sheet layer 12 is preferably joined to the non-pleated region 30 of the first sheet 25 so as not to prevent the second sheet 26 from extending in the longitudinal direction A. The present invention can also be carried out in the following manner. : Engagement with the pleated region 29 of the first sheet 25 or with a portion of the second sheet 26.

Fig. 4 is a sectional view taken along line IV-IV of Fig. 1. The absorber 13 between the surface sheet layer 11 and the back sheet layer 12 is formed with a central partition portion 33a that penetrates the absorber 13 in the thickness direction C of the sanitary napkin 10. A plurality of pleats 28 and pleat regions 29 are formed in the first sheet 25 of the back sheet layer 12. A non-pleated region 30 separated from each other is formed between the pleated region 29 and the pleated region 29 in the front-rear direction A. The first sheet 25 is flat in the non-pleated region 30, and a fixing portion 35 is formed in a part of the non-pleated region 30. The strip 27 forming the second sheet 26 of the back sheet layer 12 covers the pleat region 29 across the pleat region 29, and is transparent. The superheated adhesive 37 is joined to the first sheet 25. The strap 27 is preferably joined to the non-pleated region 30 as shown in the example, and may be joined to the pleated region 29. However, if the strap 27 is engaged with the pleated region 29, it may be possible to prevent the pleat region 29 from expanding toward the longitudinal direction A when the back sheet layer 12 is stretched in the longitudinal direction A, so that the strip 27 joined to the pleated region 29 is preferably To be engaged only with a portion of the pleat region 29, or only with a portion of the pleat region 29 of the plurality of pleat regions 29.

The strips 27 adjacent in the longitudinal direction A are separated from each other without being covered by the non-pleated regions 30, so that the non-pleated regions 30 are directly opposed to the absorbent body 13. Therefore, the first sheet 25 is not disturbed by the belt sheet 27 in the non-pleated region 30, and functions as a gas permeable property, and the water vapor generated by the moisture absorbed by the absorber 13 is released to the sanitary napkin. 10 outside.

Fig. 5 is a partial view of the sanitary napkin 10, showing a state in which the both end portions 17 of the sanitary napkin 10 of Fig. 4 thus formed are gripped, and the sanitary napkin 10 is stretched in the longitudinal direction A. The sanitary napkin 10 at the time of stretching as shown in Fig. 1-3 is shown by an imaginary line. The sanitary napkin 10 of Fig. 5 is stretched in the longitudinal direction A by the first sheet 25 of the back sheet layer 12 so that the respective pleats 28 are expanded in the longitudinal direction A while the respective strips 27 forming the second sheet 26 are formed. Stretch elastically. At the side portion 16 and the end portion 17 of the sanitary napkin 10, the surface sheet layer 11 joined to the back sheet layer 12 is stretched toward the longitudinal direction A. The surface sheet layer 11 and the back sheet layer 12 are joined to the side portion 16 by a press portion 19 formed by intermittently extending in the longitudinal direction A, and the two sheet layers 11, 12 can be longitudinally formed between the press portions 19 and 19. A stretched. In particular, the press section 19 is in the pleated area of the back sheet layer 12. 29 is intermittently formed so that the pleated area 29 is easily stretched. By the engagement of the absorbent body 13 with the surface sheet layer 11 and/or the back sheet layer 12, at least the central partition portion 33a and the side edge partition portion 33b are expanded toward the longitudinal direction A. As a result, the sanitary napkin 10 is stretched toward the longitudinal direction A. The stretching of the sanitary napkin 10 caused by the stretching is elastic by the presence of the second sheet 26, and when the sanitary napkin 10 is released from the stretching force, it elastically contracts and approaches The state before stretching.

Therefore, when the sanitary napkin 10 is fixed to the crotch region of the clothes such as the physiological pants, the sanitary napkin 10 can be elastically stretched when the underarm region is twisted or bent as the user moves. Or an action that elastically contracts and follows the underarm area. Since the sanitary napkin 10 is so easily stretched, the fixing region 35 is not easily peeled off from the underarm region. In the underarm area, there is no slack in the sanitary napkin 10, or only the sanitary napkin 10 is wrinkled, and the user becomes a strong sense of the sanitary napkin 10 and the clothing. Further, in the present invention, the term "physiological sanitary napkin" in the case of stretchability means that only 10 to 20 mm of the width of both ends of the sanitary napkin is gripped by the jig of the tensile tester, and a tension of 700 mN is applied for each width of 25 mm. At the time, the sanitary napkin was not damaged between the jig and the jig and was stretched by at least 3%. Physiological sanitary napkins are preferably stretched at a speed of 100 mm/min.

The sanitary napkin 10 has the following characteristics: by forming the central partition portion 33a in the absorbent body 13, the portion on the center line P of the both end portions 17 is stretched toward the longitudinal direction A, and is not subjected to the both sides. 16 joint The surface sheet layer 11 and the back sheet layer 12 are easily stretched by the influence of the back sheet layer 11. Therefore, in the case of using a sanitary napkin 10 of the present invention in a variety of physiological sanitary napkins which are commercially available, by stretching the both ends of the sanitary napkin 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 cutaway perspective view showing the package 40 formed by the sanitary napkin 10 and the plastic film 45 of the sheet-like packaging material. The sanitary napkin 10 series spacer 36 is overlapped with the back sheet layer 12 so as to cover the fixing region 35, and the surface sheet layer 11 is folded as the inner side in the longitudinal direction A. In the package body 40, the spacer 36 is joined to the plastic film 45 in a peelable manner, and a part of the plastic film 45 forms the cover sheet 41. The cover sheet 41 is formed such that the side portions 42 are releasably joined to the main body portion 43 of the package 40 to form a sealing portion of the package 40, and the intermediate portions of the side portions 42 and the side portions 42 are sealed to the main body portion 43 by the adhesive tape 46. The tape 46 is fixed to the cover sheet 41 in a peelable manner, and is detachably fixed to the main body portion 43. When the tape 46 is gripped to rotate in the direction indicated by the arrow R, the both side portions 42 of the cover sheet 41 are peeled off and rotated from the main body portion 43, and the opening 45 for taking out the sanitary napkin 10 is formed in the package 40. Between the cover sheet 41 and the main body portion 43, one end portion 17a of one of the both end portions 17 of the sanitary napkin 10 is visible in the opening 45. Simultaneously, at least a portion of the end pleat regions 29a formed in the plurality of pleat regions 29 opposite the end portions 17a are visible. The spacer 36 covering the fixing region 35 (see FIG. 2) of the sanitary napkin 10 is integrally rotated with the cover sheet 41 indicated by the imaginary line, and is peeled off from the fixing region 35.

When the sanitary napkin 10 is taken out from the package 40, the end portion 17a as the grip end portion is grasped by one hand, and the cover sheet 41 in the state of the imaginary line is grasped by the other hand, and the cover sheet 41 is grasped. Pull in the opposite direction and separate from each other. In the package 40, as long as the opening 45 is formed at the desired 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 pulling of the grip end portion 17a is started. The end pleat region 29a opposite to the end portion 17a can be directly viewed and the extension of the end pleat region 92a can be realized. Therefore, the article which the user can very naturally recognize that he is about to start is the sanitary napkin 10 of the present invention.

Further, the sanitary napkin 10 may be formed into the package 40 without using the spacer 36 of the illustrated example. In the package 40 in this case, the plastic film 45 is peelably joined to the fixing region 35, and is used as a spacer.

Fig. 7 is a partial cross-sectional view showing the skin facing surface 11a of the sanitary napkin 110 as an example of the embodiment of the present invention. However, the same reference numerals as in the case of the sanitary napkin 10 are used in the portions having the same functions as those of the sanitary napkin 10 illustrated in Fig. 1 and the like.

The sanitary napkin 110 has both side portions 16 in the form of curved lines, and wing portions 70 projecting in the lateral direction B are formed on the side portions 16 respectively. The wing portion 70 is a well-known person in the sanitary napkin. When the sanitary napkin 110 is used, it is folded over the outer surface of the crotch region of the garment (not shown), and the fixing portion 35 (see Fig. 8) is used to peelably fix. On the outside.

The sanitary napkin 110 has a surface sheet layer 11 and a liquid-permeable surface sheet layer having stretchability in the longitudinal direction A similarly to the sanitary napkin 10, and a back sheet layer 12 having a liquid-impermeable back surface. The sheet layer has elastic stretch and contraction in the longitudinal direction A; and the absorbent body 13, a body fluid absorptive absorbent body having a stretchability in the longitudinal direction A between the surface sheet layer 11 and the back sheet layer 12. The absorber 13 is exemplified using FIG. The side portion 16 and the wing portion 70 are formed by overlapping the water-repellent or liquid-impermeable leakage preventing sheet 71 and the back sheet layer 12 and joining them by a heat-fusible adhesive (not shown). The leakage preventing sheet 71 has a portion 72 which is joined to the surface sheet layer 11 by a heat-fusible adhesive (not shown). However, the inner edge portion 72a of the portion 72 extending in the longitudinal direction A is in a non-joined state to the surface sheet layer 11 except for the both end portions 17 of the sanitary napkin 110. The leakage preventing sheet 71 used in this aspect forms the leakage preventing portion 73 in the sanitary napkin 10, and the leakage preventing portion 73 can prevent side leakage or bleeding of the body fluid. The leakage preventing sheet 71 in the water-repellent state can be obtained by using a non-woven fabric of thermoplastic synthetic fibers, and if necessary, by using a water-repellent treatment for the non-woven 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 non-woven fabrics of thermoplastic synthetic fibers having a good touch are superposed.

In the sanitary napkin 110, the central sheet portion 75 in the width direction B in which the surface sheet layer 11, the absorber 13 and the back sheet layer 12 are overlapped is formed with a plurality of dot-shaped press portions 76 which are separated from each other, and the press portion 76 is The surface sheet layer 11 is recessed toward the back sheet layer 12. Press section 76 can be obtained by performing embossing on the central portion 75, more preferably by performing embossing under heating. In the press portion 76, the surface sheet layer 11, the absorber 13 and the back sheet layer 12 are integrated by mechanical entanglement or welding. The sanitary napkin 110 formed in the press portion 76 relatively easily stretches and contracts the surface sheet layer 11 and the absorbent body 13 together with the back sheet layer 12. The press portion 19 is arranged along the circumference of the sanitary napkin 110.

Fig. 8 is a partially cutaway view showing the garment facing surface 12a of the sanitary napkin 110. The back sheet layer 12 has the first sheet 25 and is permeable to liquid permeable, and is formed with pleats 28, pleated regions 29, and non-pleated regions 30 in the same manner as the sanitary napkin 10; and the second sheet 26 The longitudinal direction A is formed by a plurality of strips 27 that are elastically stretchable and contractible. The first sheet 25 of the wing portion 70 includes at least a non-pleated region 30 among the pleated region 29 and the non-pleated region 30, and the non-pleated region 30 is formed with a fixing region 35. The anchoring zone 35 can be covered and protected by the same spacer as the spacer 36 used for the sanitary napkin 10. When the wing portion 70 forms the pleat region 29 at this point, when the sanitary napkin 110 is attached to the laundry, it becomes difficult to bend the garment under the crotch region toward the outside. To avoid this, it is preferred that the wing portion 70 does not form the pleat region 29. The plurality of fixing regions 35 formed in the front-rear direction A of the sanitary napkin 110 are separated from each other by a large distance, and are formed only at the both end portions 17 by way of example, so that the fixing portion 35 is not hindered. The stretcher of the longitudinal direction A of the sanitary napkin 110. The fixing region 35 is formed in such a manner that it can be applied to the sanitary napkin 10 illustrated in Fig. 1 .

Figure 9 is a diagram showing an example of an embodiment of the present invention. In the same manner as in FIG. 4, the sanitary napkin 210 has the same reference numerals as those of the sanitary napkin 10 in the portion having the same function as that of the sanitary napkin 10 of FIG.

In the sanitary napkin 210, a polyethylene resin film is formed as the surface sheet layer 11, and the polyethylene resin film is formed with a plurality of pleats 80 which straddle the absorber 13, and a plurality of pleats 80 which are adjacent to each other. A pleated region 81, a non-pleated region 82 interposed between the pleated region 81 and the pleated region 81, and a plurality of liquid permeable perforations 85. When the surface sheet layer 11 is stretched in the longitudinal direction A, it is easy to extend toward the longitudinal direction A by expanding the pleat region 81. The sanitary napkin 210 is further used for the back sheet layer 12 and the absorbent body 13 used in the sanitary napkin 10. Preferably, the pleated region 81 of the surface sheet layer 11 and the pleated region 29 of the back sheet layer 12 are opposed to each other via the central partition portion 33a of the absorbent body 13, thereby forming a portion 85 which is easily stretched.

Fig. 10 is also a view similar to Fig. 9 showing a sanitary napkin 310 showing an example of an embodiment of the present invention, and is used in a portion having the same function as the sanitary napkins 10, 110, and 210. The reference numerals of the sanitary napkins 10, 110, and 210 are the same reference numerals. 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, and the third sheet 83 is used for formation. The opposite surface 11a of the skin of the person. Between the pleated region 81 of the third sheet 83 and the absorbent body 13, there is a fourth sheet 84 which is elastically stretchable in the longitudinal direction A. However, the fourth sheet 84 is formed by a plurality of strips 87 that are elastically stretchable The strip piece 87 is placed in a state of being elastically relaxed at a position overlapping the pleated area 81, and is joined to the third sheet 83 through the hot-melt adhesive 86. Most of the non-pleated regions 82 are not overlapped with the strip 87 and are opposed to the absorber 13. The same applies to the back sheet layer 12 and the absorbent body 13 as used in the sanitary napkin 210. In an example of the sanitary napkin 310, the belt piece 87 of the surface sheet layer 11 and the belt piece 27 of the back sheet layer 12 are opposed to each other via the central partition portion 33a of the absorber 13.

The sanitary napkin 310 thus formed has a portion 85 which is easily stretched, and when the stretching force of the longitudinal direction A acts, the surface sheet layer 11 and the back sheet layer 12 elastically stretch at the portion 85, and when the stretching force is released, the strength is strong. Resilience returns to the state before stretching. However, in the present invention, the back sheet layer 12 of the sanitary napkin 310 may not include the second sheet 26, and only the first sheet 25 may be formed.

The body fluid absorbent wearing article of the present invention, which is described by taking the sanitary napkins 10, 210, and 310 as an example, can be used for the absorption of body fluids such as a sanitary pad for absorbing vaginal discharge and a urine absorbing pad used for incontinent patients. Sexual items. Further, in the case where the body fluid absorbent wearing article is thin, the effect is remarkable.

Fig. 11 is a side view of a pair of pleating forming rollers 92a and 92b used to obtain the first sheet 25 (see Figs. 2 and 4) having the pleated region 29. In Fig. 11, the first tape body 91 formed of the thermoplastic plastic film for obtaining the first sheet 25 of the back sheet layer 12 continuously travels in the machine direction (not shown), and enters to be orthogonal to the machine direction. The pair of pleat forming rollers 92a and 92b extending in the intersecting direction CD. in The pleat forming rollers 92a and 92b are arranged such that the corrugated portions 93a and 93b that mesh with each other are aligned in the intersecting direction CD in the axial direction of the roller. Further, in the waveform-shaped portions 93a and 93b, the mountain portion and the valley portion are alternately arranged along the intersecting direction CD, and the mountain portion and the valley portion of the wave-shaped portion 93a are complementary to the valley portion and the mountain portion of the wave-shaped portion 93b. shape. The first belt body 91 interposed between the corrugated shape portions 93a and 93b is plastically deformed to follow the waveform shape of the rollers 92a and 92b, and a plurality of pleats 128 and a plurality of pleats 128 are formed in the first belt body 91. Adjacent pleated area 129. A non-pleated region 130 in which no pleats 128 are present is formed between adjacent pleat regions 129 and 129. In order to facilitate the plastic deformation of the first belt body 91, the rollers 92a and 92b can be used in a heated state. The first tape body 91 in which the pleated region 129 is formed is obtained by cutting the shape into a desired shape, but the first tape body 91 is joined to the tape piece 27 before cutting it. The continuum of Figures 2 and 4) can then be used as the backsheet layer 12 user as long as it is cut to the desired shape.

The above described invention, which has been described so far, can be at least organized as follows.

A body fluid absorbent wearing article having a cushion-like body fluid absorbent wearing article having longitudinal, transverse, and thickness directions orthogonal to each other, and a surface sheet layer and a garment pair forming a skin facing surface in the thickness direction a body fluid absorbing absorbent body between the back sheet layers of the facing surface, at least a part of the portion of the surface sheet layer covering the absorber is liquid permeable, and the portion of the back sheet layer covering the absorber is liquid impermeable. The aforementioned surface sheet layer and the aforementioned back sheet layer are attached to the aforementioned absorption a portion of the body extending, the absorption system being joined to at least one of the surface sheet layer and the back sheet layer, wherein Each of the surface sheet layer, the back sheet layer, and the absorber has stretchability toward the longitudinal direction. At least one of the surface sheet layer and the back sheet layer is formed of a first sheet and a second sheet; the first sheet is arranged in parallel with a plurality of pleats extending in the lateral direction, and the pleats are formed toward the front side Longitudinally expanding to exhibit the aforementioned stretchability; the second sheet is stretched across the absorbent body and elastically stretches and contracts in the longitudinal direction, and is elastically relaxed in engagement with the first sheet and interposed between the first sheet and Between the aforementioned absorbers.

The present invention has at least the following embodiments.

(1) In the first sheet, the plurality of juxtaposed pleats are juxtaposed to each other to form a pleat region, and the plurality of pleat regions are separated from each other and arranged side by side in the longitudinal direction, and the pleat regions are formed between the pleat regions. In the aforementioned longitudinal non-extended flat non-pleated regions.

(2) The second sheet is formed of a plurality of elastic strips which are respectively overlapped with the pleated region and which straddle the absorbent body and are separated from each other in the longitudinal direction of the non-pleated region.

(3) The first sheet is formed of a gas-permeable, liquid-impermeable plastic film.

(4) A fixing portion in which the mat is attached to and detached from the clothes is formed in a part of the non-pleated region.

(5) The foregoing absorbent body is formed with a partition portion which is along the edge The thickness direction penetrates the absorbent body and a part of the absorbent body is partitioned in the longitudinal direction.

(6) the absorbent body has a central partition portion belonging to the partition portion, intersecting with a center line that bisects the lateral dimension and extending in the lateral direction, and the absorbent body is along the longitudinal line on the center line Separating, a plurality of the aforementioned central partitions are arranged along the longitudinal direction.

(7) The absorbent body has a side edge extending in the longitudinal direction on both sides of the lateral direction, and a plurality of side edge partitioning portions are formed on the side edge, and the side edge partitioning portion belongs to the partitioning portion toward the inner side of the absorbent body And extending in the lateral direction as described above, the aforementioned side edges are separated in the longitudinal direction.

(8) The body fluid absorbent wearing article has a wing portion that is protruded in the lateral direction, and the back sheet layer extending from the side edge of the absorbent body extends to the wing portion at the wing portion The back sheet layer includes at least the aforementioned non-pleated regions among the aforementioned pleated regions and the aforementioned non-pleated regions.

(9) The surface sheet layer and the back sheet layer are joined to a plurality of press portions formed along the periphery of the body fluid absorbent article, and the portions between the press portions adjacent to each other along the peripheral edge are joined to each other. Engaged through a stretchable adhesive.

(10) A leakage preventing portion is formed on each of the lateral sides of the body fluid absorbent wearing article, and the leakage preventing portion is formed by a non-woven fabric that covers a part of the surface sheet layer and extends in the longitudinal direction.

(11) The aforementioned non-woven fabric of the leakage preventing portion is absorbed by the body fluid Each of the two sides and the wing portion of the article for sexual wear are overlapped and joined to the back sheet layer.

(12) The non-woven fabric and the back sheet layer of the leakage preventing portion are stacked along the peripheral edge of the body fluid absorbent wearing article, and joined to the plurality of press portions formed along the peripheral edge, along the peripheral edge The aforementioned portions between the adjacent press portions are joined by the stretchable adhesive.

(13) The aforementioned portion is formed in the aforementioned non-pleated region.

(14) The body fluid-absorbent wearing article is packaged into a package by a sheet-like material, and one end portion of the longitudinal end portions of the body fluid absorbent wearing article is a gripping end. The grip end portion is used when the body fluid absorbent wearing article is taken out from the package body, and an end pleat region is formed between the grip end portion and the fixing region in the longitudinal direction. The end pleat region belongs to one of the plurality of pleat regions and faces the grip end portion, and if an opening for taking out the body fluid absorbent article is formed at a desired portion of the package body, The aforementioned gripping end portion and the aforementioned end pleat region are packaged together in the aforementioned opening.

10‧‧‧ Body fluid absorbent wearing articles (physiological sanitary napkins)

11‧‧‧Surface sheet

11a‧‧‧ Skin facing

12‧‧‧Back foil layer

13‧‧‧Acceptor

16‧‧‧ side

17‧‧‧ Both ends

18‧‧‧The Peripheral Department

19‧‧‧Squeeze Department

21‧‧‧ Periphery

22‧‧‧Adhesive

33‧‧‧parts

P‧‧‧ center line

Claims (15)

A body fluid absorbent wearing article having a cushion-like body fluid absorbent wearing article having longitudinal, transverse, and thickness directions orthogonal to each other, and a surface sheet layer and a garment pair forming a skin facing surface in the thickness direction a body fluid absorbing absorbent body between the back sheet layers of the facing surface, at least a part of the portion of the surface sheet layer covering the absorber is liquid permeable, and the portion of the back sheet layer covering the absorber is liquid impermeable. The surface sheet layer and the back sheet layer are joined to a portion extending from the absorber, and the absorption system is joined to at least one of the surface sheet layer and the back sheet layer, and the surface sheet layer and the surface sheet layer are Each of the back sheet layer and the absorber has stretchability in the longitudinal direction, and at least one of the surface sheet layer and the back sheet layer is formed of a first sheet and a second sheet; the first sheet will be oriented toward The plurality of laterally extending pleats are juxtaposed to expand the pleats toward the longitudinal direction to exhibit the aforementioned stretchability The system across the second sheet and the absorbent body along the longitudinal repeatedly elastically expand and contract to a relaxed state and elastically engaged with the first sheet and between the first dielectric sheet and the absorbent body. The body fluid absorbent article according to claim 1, wherein the plurality of sheets of the pleats juxtaposed in the first sheet form a pleated region, and the plurality of pleat regions are separated from each other and side by side in the longitudinal direction. A non-pleated region which is flat in the longitudinal direction in the longitudinal direction is formed between the pleat regions. The body fluid absorbent article according to claim 2, wherein the second sheet is formed of a plurality of elastic band pieces, and the plurality of elastic band pieces overlap the pleated area and straddle the absorbent body, The longitudinal direction is separated from each other by the aforementioned non-pleated regions. The body fluid absorbent article according to any one of claims 1 to 3, wherein the first sheet is formed of a gas-permeable liquid-impermeable plastic film. The body fluid absorbent article according to claim 2 or 3, wherein a fixing portion for allowing the mat to attach or detach the garment is formed in a part of the non-pleated region. The body fluid absorbent article according to any one of claims 1 to 3, wherein the absorbent body is formed with a partitioning portion that penetrates the absorbent body in the thickness direction and a part of the absorbent body in the longitudinal direction Separate. The body fluid absorbent article according to claim 6, wherein the absorbent body has a central partition portion that belongs to the partition portion and intersects with a center line that bisects the lateral dimension and extends in the lateral direction. The absorbent body is partitioned along the longitudinal direction on the center line, and a plurality of the central partition portions are arranged in the longitudinal direction. The body fluid absorbent article according to claim 6, wherein the absorbent body has side edges extending in the longitudinal direction on both sides of the lateral direction, and a plurality of side edge partitioning portions are formed on the side edges, and the side edge partitioning portions are formed. The partition portion belongs to the inner side of the absorber and extends in the lateral direction, and the side edge is partitioned in the longitudinal direction. The body fluid absorbent article according to claim 2, wherein the body fluid absorbent article is formed with a wing portion protruding in a lateral direction, and the back sheet extending from the side edge of the absorbent body The layer extends to the wing portion, and the back sheet layer of the wing portion includes at least the aforementioned non-pleated region among the pleated region and the non-pleated region. The body fluid absorbent article according to any one of claims 1 to 3, wherein the surface sheet layer and the back sheet layer are joined to a plurality of press portions formed along a periphery of the body fluid absorbent article. The portion between the press portions adjacent to each other along the peripheral edge is joined by a stretchable adhesive. The body fluid absorbent article according to any one of claims 1 to 3, wherein a leakage preventing portion is formed on each of the lateral sides of the body fluid absorbent wearing article, and the leakage preventing portion is covered by the foregoing A portion of the surface sheet layer and formed of a stretchable non-woven fabric extending in the longitudinal direction. The body fluid absorbent article according to claim 9, wherein the non-woven fabric of the leakage preventing portion is attached to the both side surfaces of the body fluid absorbent article and the wing portion, and is overlapped and joined to the back sheet layer. The body fluid absorbent article according to claim 10, wherein the non-woven fabric and the back sheet layer of the leakage preventing portion are overlapped along the peripheral edge of the body fluid absorbent wearing article, and are formed along the peripheral edge. The press portions are joined, and the stretchable adhesive is adhered to the portion between the press portions adjacent to each other along the peripheral edge. Hehe. The body fluid absorbent article according to claim 10, wherein the portion is formed in the non-pleated region. The body fluid absorbent wearing article according to claim 5, wherein the body fluid absorbent wearing article is packaged into a package by a sheet material, and the package body is at both ends of the longitudinal direction of the body fluid absorbent wearing article. One end portion of the portion is a grip end portion for use in taking out the body fluid absorbent wearing article from the package body, and in the longitudinal direction at the grip end portion and the fixing portion An end pleat region is formed between the regions, and the end pleat region belongs to one of the plurality of pleat regions and is opposite to the grip end portion, and is used for taking out the body fluid absorbent article. The opening is formed at a desired portion of the package, and is packaged so that the aforementioned grip end portion and the end pleat region can be seen together in the opening.