JP5528953B2 - Absorbent article and individual absorbent article - Google Patents

Description

  The present invention relates to absorbent articles such as sanitary napkins, panty liners and incontinence pads for absorbing menstrual blood and vaginal discharge. The present invention relates to an absorbent article having a section and an individual absorbent article.

  Conventionally, as absorbent articles such as sanitary napkins, panty liners, incontinence pads, liquid-permeable back sheet made of polyethylene sheet or polyethylene laminated nonwoven fabric, and liquid-permeable made of nonwoven fabric or porous plastic sheet, etc. A material in which an absorbent body made of cotton pulp or the like is interposed between the top sheet and the top sheet is known.

  Numerous improvements have been made on this type of absorbent article, and various means for preventing leakage of body fluids have been taken. As one of these bodily fluid leakage prevention means, there is a technique for improving the adhesion with the local part by forming a middle-high part with an increased thickness of the absorber in the blood drainage part. In recent years, various improvements have been attempted with respect to the structure of the middle and high portions.

  For example, in the following Patent Document 1, in order to prevent the discharged body fluid from moving in the width direction of the absorbent article before and / or after being absorbed by the middle and high parts of the absorbent article, In an absorbent article comprising a back sheet and an absorbent body interposed between the two sheets, the absorbent body having a middle-high portion, and substantially vertically formed, both side edges of the middle-high portion A pair of leakage-proof cushion ridges extending in the front-rear direction along the line is proposed.

  Moreover, in patent document 2 below, in order to prevent leakage of menstrual blood and the like by increasing the amount of absorption of the middle and high portions raised on the use surface side at the center in the width direction of the absorbent article, a liquid-permeable top sheet In the absorbent article in which the middle and high portions raised on the use surface side over at least the range from the blood drainage portion to the rupture portion are formed in the center portion in the width direction in which the absorbent body is interposed between the back sheet and the back sheet, The middle and high portions are constituted by an upper layer absorbent body disposed between the top sheet and the absorber, and a body fluid transmission sheet disposed on the lower surface side of the upper layer absorbent body. A large number of embosses are applied from the top sheet side, and the body fluid transmission sheet has been proposed as an absorbent article having a higher density than the density of the compressed portion of the upper absorbent body by the embossing.

JP 2006-346305 A JP 2010-57526 A

  First, in the case of a general middle-high part, it is composed of the same material as the absorbent body, that is, a fiber mainly composed of pulp fiber. Without returning to the shape, the fit and adhesion to the local area deteriorated, and side leakage sometimes occurred. The invention described in Patent Document 1 prevents leakage in the lateral direction by providing a pair of leakage-proof cushion ridges extending in the front-rear direction along both side edges of the middle and high portions. However, there is a problem that the feeling of wearing is remarkably lowered. Furthermore, although the invention described in Patent Document 2 is excellent in that it can increase the amount of absorption in the middle and high parts, the middle and high parts are compressed with high density, so the hardness of the middle and high parts is increased and the feeling of wearing is impaired. . Further, when the pulp fiber is compressed under a large body pressure, there is a problem in that it does not return to its original shape because of its poor recoverability, and the fit and adhesion to the local area are reduced.

  Therefore, the main problem of the present invention is that it is possible to flexibly fit to the local area without impairing the feeling of wearing, and is excellent in resilience even when subjected to a large body pressure. It is in providing an adhesive article and its individual absorbent article.

In order to solve the above-mentioned problem, as the present invention according to claim 1, an absorber is interposed between the liquid-permeable top sheet and the back sheet, and the body is a body fluid discharge site and is the center in the width direction on the surface side. An absorbent article having middle and high parts in the part,
The middle and high portions are folded into a bellows by repeatedly folding and folding the sheet material alternately to form a bellows shape, joining the distal ends to each other at the folded portion on the proximal side in the attached state, and the proximal end Joining the section from the folded portion that is the base end side to the intermediate point that is directed to the folded portion that is the distal end side in the part where the surfaces that are directed to the folded portion that is the distal end side face each other,
The range from the joint point of the folded part on the base end side to the middle of the outer side surfaces on both sides is joined on the top sheet, and the joint point of the folded part on the base end side is centered in the developed state of the absorbent article As described above, an absorbent article is provided in which a plurality of hollow cells have a cross-sectional shape radially connected.

  In the first aspect of the invention, the structure of the middle and high portions is folded into a bellows shape by repeatedly folding the sheet material while alternately repeating the mountain fold and the valley fold, and the distal end portion at the folded portion which becomes the base end side in the attached state Joining each other and facing from the folded portion at the proximal end to the folded portion at the distal end side toward each other, toward the folded portion at the distal end side from the folded portion at the proximal end side Joining the section up to the middle point, joining the range from the joint point of the folded portion on the base side to the middle of the outer side surfaces on both sides on the top sheet, in the deployed state of the absorbent article, the base side The cross-sectional shape is such that a plurality of hollow cells are radially connected around the junction of the folded portion.

  The middle and high parts of the above structure can be flexibly fitted to the local area without impairing the wearing feeling. In addition, because multiple side walls that bond each hollow cell are pillars, they have resilience even when subjected to body pressure from the middle and high parts made of general pulp fibers, and fit to the local area Can be maintained, and when crushed by body pressure, the air inside the hollow cell is discharged to the outside so that it is possible to prevent stuffiness. Furthermore, since the hollow cell can be folded and expanded into a fan shape when expanded, it can be thinned in an individual state and can be easily carried.

  In the present invention, “the section from the folded portion on the base end side to the intermediate point toward the folded portion on the distal end side is joined” is configured from the folded portion on the proximal end side to the distal end. In addition to the case of joining all the sections up to the middle point toward the folded-back part, the portion between the folded-up part as the base end side to the middle point toward the folded-up part as the distal end side And a mode in which the intermediate portion is joined.

  As the present invention according to claim 2, there is provided the absorbent article according to claim 1, wherein the sheet material is a laminated sheet material obtained by bonding at least an absorbent sheet and a surface material.

  The invention according to claim 2 is a laminated sheet material in which at least an absorbent sheet and a surface material are bonded together as the sheet material. The surface material may be a non-woven fabric or a porous plastic sheet (mesh sheet), and in the case of a porous plastic sheet, it is desirable to interpose a second sheet made of a hydrophilic non-woven fabric between the absorbent sheet. . As the absorbent sheet, an airlaid pulp nonwoven fabric or a material obtained by mixing and heat-sealing chemical fibers with this is used to absorb body fluid.

  As the present invention according to claim 3, there is provided the absorbent article according to claim 1, wherein the sheet material is a laminated sheet material obtained by bonding a liquid-permeable nonwoven fabric or sponge sheet and a surface material.

  The invention according to claim 3 is a laminated sheet material in which a liquid-permeable nonwoven fabric or sponge sheet and a surface material are bonded together as the sheet material. In the present embodiment, a liquid-permeable material is used as a material constituting the middle and high parts under the technical idea that the middle and high parts do not have absorbability and the surrounding body absorbs body fluid.

  As the present invention according to claim 4, the front end portion and the rear end portion of the middle-high portion are inclined surfaces along the longitudinal direction, and slit-shaped through holes are formed in the middle-high portion arrangement portion of the topsheet, and the middle-high portion The absorbent article according to any one of claims 1 to 3, wherein only the upper side is exposed to the outside through the slit-shaped through hole.

  In the invention according to claim 4, it is preferable that the front end portion and the rear end portion of the middle and high portions are inclined surfaces along the longitudinal direction in consideration of contact with the skin. However, in this case, since the front edge and the rear edge may touch the skin and feel pain, in order to hide the front and rear edges, a slit-like through hole is formed in the middle and high part arrangement portion of the surface sheet, Only the upper side of the middle-high part is exposed to the outside through the slit-shaped through hole. In addition, the range from the joining point of the one side folded part to the middle of the outer side surfaces on both sides is joined on the top sheet, and the center of the joining point of the one side folded part in the developed state of the absorbent article The point which makes the cross-sectional shape which connected the some hollow cell radially is the same.

  As an invention according to claim 5, the front end portion and the rear end portion of the middle-high portion are inclined surfaces along the longitudinal direction, and a slit-like through hole is formed in the middle-high portion arrangement portion of the topsheet and the absorber, The absorbent article according to any one of claims 1 to 3, wherein only the upper side of the middle-high portion is exposed to the outside through the slit-shaped through hole.

  In the invention according to claim 5, the front end portion and the rear end portion of the middle and high portions are preferably inclined surfaces along the longitudinal direction in consideration of contact with the skin, but in this case, the front end edge and the rear end Since the edge may touch the skin and feel pain, in order to conceal the front and rear end edges, a slit-like through hole is formed in the top and bottom of the top sheet and the absorbent body, and only the upper side of the middle and high part is formed. It is exposed to the outside through the slit-shaped through hole.

  As an invention according to claim 6, the absorbent article according to any one of claims 1 to 5 is folded inward so that the surface sheets face each other along the longitudinal direction at the center in the width direction. Provided is an individually absorbent article that is placed on the upper surface, folded in the longitudinal direction a plurality of times, and the openings on both side edges are sealed.

  The invention described in claim 6 shows a preferred individual form of the absorbent article of the present invention. As described above, in the case of the present absorbent article, the hollow cell can be folded and expanded into a fan shape when unfolded. Therefore, the absorbent article is placed between the topsheets along the longitudinal direction at the center position in the width direction. In the folded state so as to face each other (in this state, the hollow cell is in a folded state), placed on the upper surface of the packaging sheet, folded in the longitudinal direction a plurality of times, and the openings on both side edges Is sealed with heat seal, adhesive or the like. Since there is no bulk in the middle and high parts, it can be made thin in an individual packaging state and is easy to carry.

  As described above in detail, according to the present invention, it is possible to flexibly fit a local area, without damaging the feeling of wearing, and having a mid-high structure that is excellent in resilience even when subjected to a large body pressure and can maintain fit to a local area. The provided absorbent article can be obtained.

It is a partial fracture development view of sanitary napkin 1 concerning the present invention. FIG. It is the III-III arrow directional view of FIG. It is the IV-IV arrow directional view of FIG. The production method of the middle-high part 6 is shown, (A) is a developed view, (B) is a schematic diagram showing a folded section, and (C) is a schematic diagram showing a folded section according to a modification. It is sectional drawing of the middle-high part 6. FIG. It is a principal part expanded view which shows the example of the inclined surface process of the middle-high part. It is a longitudinal cross-sectional view which shows the 1st aspect in the case of concealing the front-and-rear end of the middle-high part 6. The 2nd aspect at the time of concealing the front-and-rear end of the middle-high part 6 is shown, (A) is an absorber top view, (B) is a combination point. It is a longitudinal cross-sectional view which shows the 2nd aspect in case the front-and-rear end of the middle-high part 6 is hidden. It is a figure (the 1) which shows the individual packaging point of this sanitary napkin. It is a figure (the 2) which shows the individual packaging point of this sanitary napkin 1. FIG. It is a figure (the 3) which shows the individual packaging point of this sanitary napkin 1. FIG.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

[Basic structure of sanitary napkin 1]
A sanitary napkin 1 according to the present invention includes a liquid-impervious back sheet 2 made of a polyethylene sheet, a liquid-permeable top sheet 3 that quickly permeates menstrual blood, or vaginal discharge, and both of these sheets 2, An absorbent body 4 made of cotton-like pulp or synthetic pulp interposed between the three, a crepe paper 5 surrounding the absorbent body 4 for maintaining the shape of the absorbent body 4 and improving diffusibility, and the absorbent body Mainly composed of a pair of left and right three-dimensional gathers BS and BS provided with a substantially side edge portion 4 as an upright base end and protruding at the surface side in a predetermined section in the front-rear direction so as to include at least a body fluid discharge portion In the periphery of the absorbent body 4, the outer edge portions of the back sheet 2 and the top sheet 3 are joined at the upper and lower end edges by an adhesive such as hot melt or an adhesive means such as heat seal. The back sheet 2 extending to the side of the absorbent body 4 at the side edges of the side and the side nonwoven fabric 7 forming the three-dimensional gather BS are adhesives such as hot melt or adhesive means such as heat seal Wing-like flaps W, W that protrude sideways are formed by the laminated sheet portion of the back sheet 2 and the side nonwoven fabric 7, and the hip-hold flap W _B, W _B are formed, and the rear surface side of the main body displacement preventing pressure-sensitive adhesive layer 11 of the absorbent core 4 each wing-like flaps W, W backside of wing-fixing adhesive layer 12, 12 and for each hip hold flaps W _B, together with the Hippuzure fixing adhesive layer 13 on the back side is formed of W _B, these body displacement preventing pressure-sensitive adhesive layer 11, wing-stop Adhesive layer 12 and Hippuzure fixing adhesive layer 13 is covered so as to be peeled off by the peeling paper 30 (30A through 30C). In addition, you may make it perform the corner cutting which cuts a corner part diagonally so that the said release paper 30 may peel easily.

Hereinafter, the structure of the sanitary napkin 1 will be described in detail.
As the back sheet 2, a sheet material having at least water shielding properties such as polyethylene is used, but in recent years, a material having moisture permeability tends to be used from the viewpoint of preventing stuffiness. The water- and moisture-permeable sheet material is a microporous material obtained by melting and kneading an inorganic filler in an olefin-based resin such as polyethylene or polypropylene to form a sheet, and then stretching in a uniaxial or biaxial direction. A sheet is preferably used. On the non-use surface side (outer surface) of the back sheet 2 on which the absorbent body 4 is disposed, as shown in FIG. 2, one or a plurality of main body displacement prevention adhesive layers 11 are formed, the wing-shaped flaps W, the non-use surface side of the back sheet 2 to form a W (outer surface), the wing-fixing adhesive layer 12, 12 respectively forming the hip hold flaps W _B, the W _B On the non-use surface side (outer surface) of the back sheet 2 to be formed, hip-slipping adhesive layers 13 and 13 are formed, respectively, to fix the sanitary napkin 1 to the underwear when worn on the body. As the back sheet 2, a polylaminate nonwoven fabric in which a plastic film and a nonwoven fabric are laminated may be used.

  Next, a porous or non-porous nonwoven fabric or a porous plastic sheet is preferably used as the top sheet 3. As the material fibers constituting the nonwoven fabric, in addition to olefins such as polyethylene or polypropylene, polyesters, polyamides, and other synthetic fibers, regenerated fibers such as rayon and cupra, and natural fibers such as cotton can be used. A nonwoven fabric obtained by an appropriate processing method such as a method, a spun bond method, a thermal bond method, a melt blown method, or a needle punch method can be used. Among these processing methods, the spunlace method is excellent in terms of flexibility and drapeability, and the thermal bond method is excellent in terms of being bulky and soft. When a large number of through-holes are formed in the surface sheet 3, menstrual blood, urine and the like (hereinafter collectively referred to as body fluid) are quickly absorbed, and the dry touch properties are excellent. .

  The said absorber 4 contains a pulp fiber at least and can mix a synthetic fiber arbitrarily. When mixing synthetic fiber, what mixed the ratio of the said pulp fiber: synthetic fiber by weight conversion 80-20: 20-80, Preferably 40-60: 60-40 is desirable.

  As the synthetic fiber, for example, polyolefins such as polyethylene or polypropylene, polyesters such as polyethylene terephthalate and polybutylene terephthalate, polyamides such as nylon, and copolymers thereof can be used. It may be what you did. In addition, a composite fiber such as a core-sheath fiber, a side-by-side fiber, or a split fiber having a fiber having a high melting point as a core and a fiber having a low melting point as a sheath can also be used. In the case of a hydrophobic fiber, it is desirable to use a synthetic fiber that has been surface-treated with a hydrophilizing agent so as to have an affinity for body fluids.

  The absorber 4 can contain a highly water absorbent resin. Examples of the superabsorbent resin include cross-linked polyacrylate, self-crosslinked polyacrylate, saponified acrylate-vinyl acetate copolymer cross-linked, isobutylene / maleic anhydride copolymer cross-linked, Examples include cross-linked polysulfonates, and partially cross-linked water-swellable polymers such as polyethylene oxide and polyacrylamide. Among these, those based on acrylic acid or acrylate that are excellent in water absorption and water absorption speed are preferred. In the production process of the highly water-absorbent resin having the water absorption performance, the water absorption force and the water absorption speed can be adjusted by adjusting the crosslinking density and the crosslinking density gradient. When the blending amount is increased, so-called gel blocking phenomenon occurs. Therefore, it is desirable to blend in a ratio of 1 to 10% in terms of weight with respect to the total weight of the pulp fiber and the synthetic fiber. In addition, when the high water-absorbing resin content exceeds 50%, the entanglement between the pulp fibers is lost, the sheet strength is lowered, and tearing, cracking, and the like are likely to occur.

  Examples of the pulp fiber include chemical fibers obtained from wood, cellulose fibers such as molten pulp, and artificial cellulose fibers such as rayon and acetate. Softwood pulp having a longer fiber length than hardwood pulp functions and It is preferably used in terms of price.

On the other hand, the width dimension of the liquid-permeable surface sheet 3 is slightly longer than the width of the absorbent body 4 and covers the absorbent body 4 as shown in the cross-sectional views of FIGS. 3 and 4 in the illustrated example. The purpose of the three-dimensional gather BS is to prevent the penetration of a side nonwoven fabric 7 different from the liquid-permeable surface sheet 3, specifically menstrual blood or a cage, or to increase the feeling of touch. Depending on the case, it is configured using a non-woven fabric material subjected to appropriate water repellent treatment or hydrophilic treatment. The side nonwoven fabric 7 can be made of natural fiber, synthetic fiber, regenerated fiber, or the like and formed by an appropriate processing method. Preferably, the side nonwoven fabric 7 eliminates the feeling of stickiness and prevents stuffiness. For this reason, it is preferable to use a non-woven fabric with reduced basis weight and air permeability. Specifically, it is desirable to use a non-woven fabric produced with a basis weight of 10 to 23 g / m ² , and silicon-based, paraffin-based, alkylchromic chloride-based water repellents, etc. in order to reliably prevent permeation of body fluids. A water repellent nonwoven fabric coated with is preferably used.

As shown in FIGS. 3 and 4, the side nonwoven fabric 7 has an outer portion from the intermediate portion in the width direction from the inner position of the absorber 4 to slightly beyond the absorber side edge to the outer edge of the liquid-impermeable back sheet 2. A pair of left and right wings are bonded to the absorbent body side portion substantially corresponding to the body fluid discharge portion by the laminated sheet portion of the side nonwoven fabric 7 and the liquid-impervious back sheet 2. Jo flaps W, to form a W, than this flap hip hold the buttocks side position W _B, to form a W _B. These wing-shaped flaps W, W and hip hold flaps W _B, W, respectively on the outer surface side adhesive layer 12 of the _B ..., 13 ... comprises a, when worn for shorts, the wing-shaped flaps W, folding a W line RL folded on the opposite side at the vicinity, as well as fastened is wound around the crotch portion of the panties, so as to fasten the hip hold flaps W _B, the W _B to the inner surface of the shorts.

  On the other hand, while the inner side part of the said side nonwoven fabric 7 is folded back substantially double, the thread-like elastic elastic member by which the appropriate position of the both ends or the longitudinal direction was fixed to the height direction intermediate part inside this double sheet | seat 19, and a plurality of, in the illustrated example, two thread-like elastic stretch members 20, 20 are fixed at both ends or at appropriate positions in the longitudinal direction at the upper portion of the thread-like elastic stretch member 19. It is arranged. As shown in FIG. 3, the double sheet portion is bonded to the absorbent body 4 side in a state where the double sheet portion is folded and laminated in a Z-shaped cross section as shown in FIG. Three-dimensional gathers BS, BS standing on the surface side are formed while forming pockets P, P with openings inward in the shape of a cross-section, with the elastic elastic member 19 arrangement site as a bending point.

  The sanitary napkin 1 has a middle-high portion 6 at the center in the width direction on the surface side, which is a body fluid discharge site.

[About mid-high section 6]
Hereinafter, the middle and high portions 6 will be described in detail.

  As shown in FIG. 5 (A), the middle and high portions 6 are folded into multiple bellows by alternately repeating the mountain fold and the valley fold, and then as shown in FIG. 5 (B). Further, the distal end portions 8a, 8a... Are joined to each other by the adhesives 14, 14,. In the region where the surfaces facing each other face each other, a section from the folded portion 8 which is the base end side to the intermediate point which is directed to the folded portion 9 which is the distal end side is joined by the adhesives 15 and 15. As shown in FIG. 5 (B), the joining mode is not limited to the case where the entire section from the folded portion 8 to the intermediate point is joined by the adhesive 15, and as shown in FIG. In this section, the intermediate portion is not joined, and the intermediate portion is joined.

  Then, as shown in FIG. 6, ranges 18 and 18 from the joining point 17 (bundle portion) of the folded-back portion 8 on the base end side to the middle of the outer side surfaces on both sides are joined on the topsheet 3, In the unfolded state of the napkin 1, a plurality of hollow cells 6 </ b> A to 6 </ b> C are radially connected around the joint 17 of the folded portion 8 on the base end side.

  As the sheet material 10, a laminated sheet material obtained by bonding at least an absorbent sheet and a surface material, specifically, a two-layered sheet material composed of an absorbent sheet and a surface material, an absorbent sheet, and a surface material Further, a sheet material having a three-layer structure in which a second sheet made of a hydrophilic nonwoven fabric is interposed between the absorbent sheet and the surface material can be used.

  As the absorbent sheet, for example, an airlaid pulp nonwoven fabric or a material obtained by mixing and heat-sealing chemical fibers with this can be suitably used.

  As the surface material, a non-porous or porous nonwoven fabric or a porous plastic sheet (mesh sheet) can be used. When a porous plastic sheet is used, a second sheet made of a hydrophilic nonwoven fabric is interposed between the absorbent sheet and the surface sheet. It is desirable to intervene. As the nonwoven fabric type of the second sheet, a bulky air-through nonwoven fabric is desirable.

  As the sheet material 10, in addition to the case where an absorbent sheet is used to provide absorption performance, the material constituting the middle and high parts under the technical idea of absorbing the body fluid around the absorbent body 4 does not have absorbability. Alternatively, a liquid-permeable material may be used. In this case, a laminated sheet material in which a liquid-permeable nonwoven fabric or sponge sheet and a surface material are bonded together is preferable.

  As described above in the manufacturing procedure of the middle-high portion 6, the front end portion and the rear end portion of the middle-high portion 6 are inclined surfaces 6a, 6b along the longitudinal direction in order to improve the wearing feeling. In the developed view, as shown in FIG. 5 (A), a sheet material 10 in which a lateral V-shaped notch is formed in each side edge portion for each hollow cell is used, but the inclined surface 6a, 6b can also be formed by folding the square sheet material 10 alternately and repeatedly into a bellows shape by repeatedly repeating a mountain fold and a valley fold, and then cutting the ends obliquely in a bundled state. In addition, if the inclined surfaces 6a and 6b remain cut, the contact with the skin becomes strong and the feeling of wearing is impaired. Therefore, as shown in FIG. A cut 10a may be made from the center of the side edge of 6A to 6C, and the triangular portion may be folded back to the back side.

  Further, as shown in FIG. 6, it is preferable that the hollow cells 6 </ b> A to 6 </ b> C have a bulge, but the middle-high portion 6 has a thickness including an absorbent sheet as in this embodiment. When the sheet material 10 is used, if the folded portion 9 on the leading end side is strong, it is difficult for the leading end side to bulge. Therefore, as shown in FIG. 5A, in the constituent parts of the hollow cells 6A to 6C, for example, a rectangular shape is formed in a plan view so as to straddle the fold line of the folded portion 9 on the tip side. It is desirable to form a groove-shaped engraved emboss line 16. Thereby, the crease of the fold line of the folding | returning part 9 used as the said front end side is relieve | moderated, and it is typically set as the hollow cells 6A-6C in which the front end surface was bulging as shown in FIG. Is possible.

  By the way, by providing the inclined surfaces 6a and 6b on the front and rear parts of the middle and high part 6, respectively, the front edge and the rear edge may hit the skin and feel pain. It is desirable to improve the feeling of wearing by avoiding it. As a 1st aspect in this case, as FIG. 8 shows, the slit-shaped through-hole 3a is formed in the middle-high part arrangement | positioning site | part of the said surface sheet 3, and only the upper part side of the said middle-high part 6 is said slit shape. It is exposed to the outside through the through hole 3a. As a 2nd aspect, as shown to FIG. 9 (A), the slit-shaped through-hole 4a is formed in the middle-high part arrangement | positioning site | part of the absorber 4, and as shown in FIG. Only the upper side of the portion 6 is exposed to the outside through the slit-shaped through hole 4a, and then, as shown in FIG. 3a is formed, and only the upper side of the middle-high part 6 is exposed to the outside through the slit-shaped through hole 3a. In the first aspect and the second aspect as well, the range 18, 18 from the joining point 17 of the folded portion 8 on one side to the middle of the outer side surfaces on both sides is joined on the top sheet 3, and the napkin 1 is developed. In this state, the same is true in that the plurality of hollow cells 6 </ b> A to 6 </ b> C centering on the junction 17 of the folded portion 8 on the one side are radially connected.

  On the other hand, in the case of the sanitary napkin 1, the hollow cells 6A to 6C can be folded in a bellows shape around the joint point 17 of the folded-back portion 8 on the base end side, and are fan-shaped when deployed. 11, the sanitary napkin 1 is folded inward so that the topsheets 3 face each other along the longitudinal direction at the fold line K at the center in the width direction, as shown in FIG. (In this state, the hollow cells 6 </ b> A to 6 </ b> C are in a folded state) and placed on the upper surface of the packaging sheet 21. In this state, as shown in FIG. 12, the side edge portions of the packaging sheet 21 have several mm to several tens of mm as the heat seal allowance. A plurality of folds are folded in the longitudinal direction. The illustrated example is folded in four in the order of A, B, and C. Thereafter, as shown in FIG. 13, the openings 21 b and 21 b on both side edges are sealed by heat sealing, and the sheet edge is temporarily fixed by the tag tape 22. In the case of the sanitary napkin 1, the middle-high part 6 can be folded and can be made thin in an individual packaging state, so that it is easy to carry.

[Other examples]
(1) In the above-described embodiment, the middle and high portions 6 are configured by the three hollow cells 6A to 6C. However, the number of hollow cells is arbitrary, and may be two or four or more. Preference is given to 3-5 hollow cells.

DESCRIPTION OF SYMBOLS 1 ... Sanitary napkin, 2 ... Back sheet, 3 ... Top sheet, 4 ... Absorber, 5 ... Crepe paper, 6 ... Middle-high part, 6A-6C ... Hollow cell, 6a * 6b ... Inclined surface, 7 ... Side nonwoven fabric, DESCRIPTION OF SYMBOLS 8 ... Folding part used as a base end side, 9 ... Folding part used as a front end side, 10 ... Sheet material, 11 ... Main body slip prevention adhesive layer, 12 ... Wings prevention adhesive layer, 13 ... Hips prevention adhesive layer, 14, 15 ... adhesive, 21 ... the package sheet, BS ... standing gathers, S ... Individual packaging sheet, W ... wing-like flaps, W B _... Hip-hold flap

Claims (6)

Between the liquid-permeable top sheet and the back sheet, an absorbent article is interposed, and is an absorbent article having a middle-high part at the center part in the width direction on the surface side as a body fluid discharge part,
The middle and high portions are folded into a bellows by repeatedly folding and folding the sheet material alternately to form a bellows shape, joining the distal ends to each other at the folded portion on the proximal side in the attached state, and the proximal end Joining the section from the folded portion that is the base end side to the intermediate point that is directed to the folded portion that is the distal end side in the part where the surfaces that are directed to the folded portion that is the distal end side face each other,
The range from the joint point of the folded part on the base end side to the middle of the outer side surfaces on both sides is joined on the top sheet, and the joint point of the folded part on the base end side is centered in the developed state of the absorbent article An absorptive article characterized by having a cross-sectional shape in which a plurality of hollow cells are radially connected.   The absorbent article according to claim 1, wherein the sheet material is a laminated sheet material obtained by bonding at least an absorbent sheet and a surface material.   The absorbent article according to claim 1, wherein the sheet material is a sheet material obtained by bonding a liquid-permeable nonwoven fabric or sponge sheet and a surface material.   The front end portion and the rear end portion of the middle-high portion are inclined surfaces along the longitudinal direction, a slit-shaped through hole is formed in the middle-high portion arrangement portion of the topsheet, and only the upper side of the middle-high portion is the slit-shaped portion. The absorbent article according to any one of claims 1 to 3, wherein the absorbent article is exposed to the outside through a through hole.   The front end portion and the rear end portion of the middle-high portion are inclined surfaces along the longitudinal direction, and a slit-like through hole is formed in the top-sheet and the absorber middle-high portion arrangement portion, and only the upper side of the middle-high portion is The absorbent article according to any one of claims 1 to 3, which is exposed to the outside through a slit-shaped through hole.   The absorbent article according to any one of claims 1 to 5 is placed on the upper surface of the packaging sheet in a folded state so that the surface sheets face each other along the longitudinal direction at the center position in the width direction, and the longitudinal direction An individual absorbent article which is folded in a plurality of times and the openings on both side edges are sealed.

Images