JP5476498B2 - Absorbent articles - Google Patents

Description

  The present invention mainly relates to absorbent articles used for sanitary napkins, vaginal discharge sheets, incontinence pads, medical pads, toiletries, etc., and fits the body, is difficult to twist, and easily follows body movements. The present invention relates to an absorbent article.

  Conventionally, as absorbent articles such as panty liners, sanitary napkins, incontinence pads, liquid-impervious back sheets such as polyethylene sheets or polyethylene sheet-laminated nonwoven fabrics, and liquid-permeable surface sheets such as nonwoven fabrics or liquid-permeable plastic sheets In this case, an absorbent body made of paper cotton such as pulverized pulp is interposed therebetween.

  For the purpose of preventing leakage of bodily fluids and the like, these absorbent articles are known which have been provided with means for improving fit to various bodies as shown in Patent Documents 1 and 2 below, for example. ing. Specifically, in Patent Document 1 below, a plurality of embossed grooves are formed from the upper surface of the absorbent body toward the inside of the absorbent body so that the curved surface of the body is bent along the curved surface of the wearer's body. Improves fit and prevents leakage.

  Moreover, in the following patent document 2, the absorbent body has a middle-high portion that is narrower than the absorbent body and protrudes in a convex shape on the skin contact surface side, and the middle-high portion is made of an absorbent article. It consists of a front middle-high part and a rear middle-high part that are separately provided on the front part and the rear part, and the deformation of the front part or the rear part is not affected between the front middle-high part and the rear middle-high part. By providing the folding starting point, the deformation of the front part or the rear part is prevented from affecting each other.

JP 2006-149413 A JP 2006-239162 A

  However, in the absorbent articles described in Patent Documents 1 and 2, although the fit to the body can be improved by forming the middle and high parts on the surface of the absorbent body, the wide range of the body part covered by the absorbent article If the torsional deformation of the entire absorbent article occurs during wearing due to movement of the buttocks that occupy the body, there will be a twist in the middle and high parts that are in close contact with the body fluid discharge part, and fit may be lost and body fluid may leak was there.

  Therefore, the main problem of the present invention is that, when worn, the body movement, in particular, the body movement that causes the torsional deformation of the absorbent article is good, and the body can be fitted to the body, and leakage is accompanied accordingly. It is providing the absorbent article which can prevent reliably.

In order to solve the above-mentioned problem, in the absorbent article in which an absorbent body is interposed between the liquid-permeable top sheet and the back sheet as the present invention according to claim 1,
The absorbent body is composed of a pair of left and right absorbent elements disposed substantially along the longitudinal direction of the absorbent article, and the pair of left and right absorbent elements corresponds to at least the blood drainage port of the wearer. And at least two adhesive layers that are arranged so as to intersect with each other in a region including a part and adhere to shorts on the outer surface of the back sheet, and the adhesive layer is along each absorber element, An absorbent article is provided that is formed so as to intersect at a site corresponding to a blood drainage port of a wearer .

  In the present invention according to the first aspect, the absorbent body is composed of a pair of left and right absorbent elements disposed along the substantially longitudinal direction of the absorbent article, and at least corresponds to the blood drainage port of the wearer. Since the absorbent article is easily deformed in an oblique direction with the intersection as a base point even if torsional deformation or the like occurs in the absorbent article, each absorber element is a body part. Follows the movement. Furthermore, in the said crossing part, each absorber element has been arrange | positioned, and since sufficient thickness is ensured, it will be difficult to twist and it will be able to fit by a blood drainage part, and the absorption performance of a bodily fluid is ensured. As a result, leakage can be reliably prevented.

In addition, the adhesive layer is provided so that the adhesive layer crosses at a portion corresponding to the blood drainage port of the wearer along each absorber element so that the adhesive layer absorbs the torsional deformation of the body. The movement of the body is not hindered, and since it is formed along the absorbent body element, deviation from the shorts is prevented.

As the present invention according to claim 2, in an absorbent article in which an absorber is interposed between a liquid-permeable top sheet and a back sheet,
The absorbent body is composed of a pair of left and right absorbent elements disposed along a substantially longitudinal direction of the absorbent article, and the pair of left and right absorbent elements corresponds to at least a blood drainage port of the wearer. They are arranged to intersect at a region containing the site Rutotomoni, whereas absorbent elements of the side is a planar shape that is bent in plan view Do-shaped, absorbent elements on the other side in the reverse dogleg shape in a plan view It has a bent planar shape and is provided with at least two adhesive layers that adhere to the shorts on the outer surface of the back sheet , and the adhesive layer extends along each of the absorbent elements and is almost entirely drained by the wearer. An absorbent article characterized by being formed so as to intersect at a portion corresponding to the mouth is provided.

  The present invention described in claim 2 shows a specific embodiment, and each of the absorber elements is formed in a plane shape that is symmetrically bent in a square shape in plan view, whereby the intersecting portion is formed. The absorber which has can be implement | achieved. In addition, it is desirable that each absorber element has the same shape and is manufactured by reversing one of the absorber elements because of the equipment cost such as the pulp stacking equipment and the conveying line of the absorber.

As the present invention according to claim 3, wherein said absorbent according to the absorber in a state in which the elements are combined, to any one of claims 1-2 in which the width of the portion corresponding to the crotch portion of the wearer is the smallest A sex article is provided.

In the present invention according to claim 3, the width of the portion corresponding to the crotch portion of the wearer is formed to be the smallest in a state where the respective absorber elements are combined, whereby the absorber is placed around the leg of the wearer. It will be possible to fit without any discomfort.

As the present invention according to claim 4 , the absorbent elements are arranged so as to overlap each other in the front region of the absorbent article relative to the site corresponding to the blood drainage port of the wearer. The absorbent article as described in any one of 3 is provided.

Since the present invention according to claim 4 is arranged so that the absorbent elements are substantially coincided with each other in the front region of the absorbent article rather than the site corresponding to the blood drainage port of the wearer, As the amount of body fluid absorbed in the front part increases, the rigidity of the front part increases, twisting is prevented, and adhesion to the body can be improved.

As this invention which concerns on Claim 5 , each absorber element is formed so that the outer edge side part in the front side part of an absorbent article and the inner edge side part in the rear side part of an absorbent article are thinner than other parts. An absorbent article according to any one of claims 1 to 4 is provided.

In the present invention according to the fifth aspect, by arranging the absorbent elements formed as described above so as to intersect with each other, the absorbent body in the portion around the leg portion and the groove of the buttocks is formed thin. It becomes like this. For this reason, when an absorbent article is worn, it does not give a sense of incongruity around the legs, and the absorbent article can be easily folded and inserted into the groove of the buttocks.

As the present invention according to claim 6 , in each of the absorber elements, the rear end portion of the side opposite to the pair of absorber elements is cut off, and the absorber elements are combined in a combined state. An absorbent article according to any one of claims 1 to 5, wherein a notch is provided in the center of the rear end of the body.

In the present invention according to the sixth aspect, by providing the notch portion, the wearable article can be easily sandwiched in the groove of the buttocks by picking the notch portion by hand at the time of wearing. Reduce.

As this invention which concerns on Claim 7 , in the state which each said absorber element was combined, it is between the said backsheet and an absorber, and is along the longitudinal direction of the absorber center in the back side part of an absorbent article. An absorbent article according to any one of claims 1 to 6, wherein an elastic body is disposed.

In the present invention described in claim 7 , the elastic body is arranged in order to make the rear part of the absorbent article deform along the groove of the collar part and to easily enter the groove of the collar part. .

As the present invention according to claim 8, wherein in a state in which the absorbent elements are combined, to claim 1-7 or along a longitudinal direction in the width direction center second sheet of hydrophilic are disposed The absorbent article described is provided.

In the present invention described in claim 8 , the second sheet is disposed in order to quickly absorb body fluid from the front side of the blood drainage port to the buttocks and prevent leakage of body fluid.

As the present invention according to claim 9 , solid gathers are provided on both sides of the absorbent article on the use surface side so as to stand on the use surface side by the contraction force of the elastic expansion and contraction member. The absorbent article in any one of Claims 1-8 provided so that only the range corresponding to the cross | intersection part of an element may stand is provided.

The present invention according to the ninth aspect substantially corresponds to the intersecting portion of each absorber element in order to reliably prevent side leakage of body fluid with the minimum necessary materials and to improve the followability on the rear side. A three-dimensional gather in which only the range stands is provided.

As the present invention according to claim 10 , there is provided the absorbent article according to any one of claims 1 to 9 , wherein each of the absorber elements is surrounded by crepe paper.

According to the tenth aspect of the present invention, each absorber element is surrounded by crepe paper so that each absorber element is easily deformed in accordance with the movement of the body.

As the present invention according to claim 11, wherein the individual absorbent elements, without being surrounded by crepe paper, direct, according to claim 1 to 9 or which are interposed between the topsheet and the backsheet An absorbent article is provided.

In the present invention described in claim 11 , since each absorber element is not directly surrounded by the crepe paper but is directly interposed between the top sheet and the back sheet, absorption by surrounding with the crepe paper. Stiffening of the body is prevented, and followability to movement of the body is not hindered. Furthermore, since no crepe paper is present, the transfer of body fluid from the top sheet to the absorbent body is performed quickly.

As the present invention according to claim 12, wherein at the intersection of the individual absorbent elements, the absorbent according to any one of claims 1 to 11 in which the absorbent elements with each other by applying embossing from the top side is joined Articles are provided.

In the present invention described in claim 12 , since each absorber element is joined by embossing from the upper surface side at the crossing portion, a high joining strength can be obtained, and the absorbent article is disposed behind. Even if torsional deformation of the absorber occurs at the side portion, twisting can be surely prevented at the intersection that is the base point.

As this invention which concerns on Claim 13 , while providing the outermost surface of the said back surface sheet with the adhesive strip of several strips made to adhere with respect to shorts, one strip of this strip of adhesive layers is the said absorbent article. The absorptive article according to any one of claims 1 to 12 currently formed in the width direction central part along a longitudinal direction in a back side portion.

In this invention which concerns on the said Claim 13, when it is going to enter into the groove | channel of the collar part by making the back side width direction center part of an absorbent article into the use surface side as a mountain fold, in the case of this absorbent article, it forms in the back surface side One of the plurality of adhesive layers thus formed is formed along the longitudinal direction at the center in the width direction in the rear portion of the absorbent article. When folded, the pressure-sensitive adhesive layers are bonded to each other and the valley folded state is maintained.

  As described above in detail, according to the present invention, when worn, the body movement, in particular, the body movement that causes the torsional deformation of the absorbent article is good and can be fitted to the body. Leakage can be reliably prevented.

It is an expanded view of the sanitary napkin 1 which concerns on this invention. It is the II-II arrow directional view of FIG. It is the III-III arrow directional view of FIG. FIG. 7 is a plan view showing another example (No. 1) of the absorbent body 4. FIG. 6 is a plan view showing another example (2) of the absorbent body 4. The other form example (the 3) of the absorber 4 is shown, (A) is a top view of 4 A of absorber elements, (B) is a top view of the absorber 4 which shows a combination state. FIG. 4 is a plan view of the absorbent body 4 showing an arrangement state of an elastic body 22. FIG. 6 is a plan view of the absorbent body 4 showing the arrangement state of the second sheet 23. It is an expanded view of the sanitary napkin 1 which shows the arrangement | positioning state of solid gather BS. It is the XX arrow directional view of FIG. It is a manufacturing process figure (A)-(C) which shows the example of the form which surrounds the absorber 4 with the crepe paper 5. FIG. It is manufacturing process figure (A)-(D) which shows the example of a form which surrounds each absorber element 4A, 4B with the crepe paper 5. FIG. It is a top view (A)-(D) of the absorber 4 which shows the provision pattern of the embossing 24 in the cross | intersection part 8. FIG. It is a back view of the sanitary napkin 1 which shows the arrangement pattern (the 1) of the adhesive layers 25 and 26. It is a back view of the sanitary napkin 1 which shows the arrangement pattern (the 2) of the adhesive layers 25 and 26. It is a back view of the sanitary napkin 1 which shows the arrangement | positioning pattern of the adhesive layers 27 and 27. FIG.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. 1 is a developed view of a sanitary napkin 1 according to the present invention, FIG. 2 is a view taken along the line II-II in FIG. 1, and FIG. 3 is a view taken along the line III-III in FIG.

The sanitary napkin 1 includes a liquid-impervious back sheet 2 made of a polyethylene sheet, a liquid-permeable surface sheet 3 that allows permeation of menstrual blood, cages, and the like, and an intervening sheet between the sheets 2 and 3. The absorbent body 4 is composed mainly of a cotton-like pulp or synthetic pulp, and the crepe paper 5 surrounding the absorbent body 4 in order to maintain the shape of the absorbent body 4 and improve the diffusibility. Around the body 4, the outer edge portion of the liquid-impervious back sheet 2 and the liquid-permeable top sheet 3 or the side nonwoven fabric 7 is joined by an adhesive such as hot melt or an adhesive means such as heat seal. Wing-like flaps W, W protruding laterally by the laminated portion of the liquid-impervious back sheet 2 and the side nonwoven fabric 7 are formed on both sides of the discharge part H, and the collar part is more than this. The second wing-shaped flaps W _B, is W _B are formed in a portion located.

Hereinafter, the structure of the sanitary napkin 1 will be described in detail.
The liquid-impervious back sheet 2 is made of a sheet material having at least water-impervious properties such as polyethylene and polypropylene, but in addition to this, a non-woven sheet after securing a substantially liquid-impervious property through a waterproof film. (In this case, a liquid-impervious back sheet is composed of the waterproof film and the nonwoven fabric). In recent years, those having moisture permeability tend to be suitably 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.

  As the surface sheet 3, a perforated or non-porous nonwoven fabric or a porous plastic sheet is preferably used. Examples of the material fibers constituting the nonwoven fabric include synthetic fibers such as polyethylene or polypropylene, synthetic fibers such as polyester and polyamide, recycled fibers such as rayon and cupra, and natural fibers such as cotton. A nonwoven fabric obtained by an appropriate processing method such as a lace method, a spun bond method, a thermal bond method, an air through method, a melt blown method, or a needle punch method can be used. Of these processing methods, the spunlace method is excellent in terms of flexibility and the spunbond method is excellent in drapeability, and the thermal bond method and the air-through method are excellent in terms of being bulky and soft.

  The absorbent body 4 interposed between the liquid-impermeable back sheet 2 and the top sheet 3 is preferably made of cotton-like pulp. At this time, it is also possible to use a mixture in which a superabsorbent resin is mixed in cotton pulp, or a mixture in which chemical fibers are mixed in the pulp and a superabsorbent resin is mixed. Examples of the pulp 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. In the molding of the absorbent body 4, a known production method such as a stacking method or an airlaid method can be used. In particular, in the present invention, there is a problem that it is difficult to follow the movement of the body in a thin absorbent body molded by the airlaid method or the like. It is effective in that can be solved.

  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. The content of the superabsorbent resin is preferably 10 to 60%. When the content of the superabsorbent resin is less than 10%, sufficient absorbability cannot be provided, and when it exceeds 60%, the entanglement between the pulp fibers disappears, the sheet strength decreases, and tears, cracks, etc. Is likely to occur.

  In particular, in the present invention, as shown in FIG. 1, the absorbent body 4 is composed of a pair of left and right absorbent elements 4A and 4B disposed along the substantially longitudinal direction of the sanitary napkin 1, and at least It arrange | positions so that the cross | intersection part 8 which cross | intersects in the area | region containing the site | part corresponding to the blood drainage part H of a wearer may be formed. More specifically, the absorbent body 4 is composed of a pair of left and right absorbent elements disposed along the substantially longitudinal direction of the sanitary napkin 1, and the absorbent element 4A on one side is not seen in a plan view. The absorbent element 4B on the other side has a planar shape bent in a letter shape, and includes a portion corresponding to at least the blood drainage port H of the wearer. It is arranged to intersect in the area. And each said absorber element 4A, 4B is arrange | positioned in parallel so that it may not mutually overlap along the longitudinal direction in the width direction center part in the rear side part of the sanitary napkin 1. FIG. With the above-described configuration, the intersecting portion 8 in which the absorbent elements 4A and 4B are stacked closely contacts the body fluid discharge portion H to surely prevent leakage, and at the rear portion of the napkin, twist caused by movement of the buttocks, etc. Even if the deformation occurs, the deflection at the intersecting portion 8 does not occur, and the absorber elements 4A and 4B follow the movements of the body because the intersecting portion 8 is easily deformed in an oblique direction. Thus, leakage of body fluid can be surely prevented.

  On the other hand, side nonwoven fabrics 7 and 7 are provided on the both sides of the sanitary napkin 1 along the longitudinal direction and over almost the entire length of the napkin 1, respectively. As the side nonwoven fabric 7, a water-repellent treated nonwoven fabric or a hydrophilic treated nonwoven fabric can be used from the viewpoint of an important function. For example, if importance is placed on functions such as preventing permeation of menstrual blood or vaginal discharge, or enhancing the touch feeling, water repellent treatment coated with silicon, paraffin or alkylchromic chloride water repellent It is desirable to use a nonwoven fabric. On the other hand, if importance is attached to absorbability such as menstrual blood, a method of polymerizing a compound having a hydrophilic group, for example, an oxidation product of polyethylene glycol, in the production process of synthetic fiber, Use a non-woven fabric that has been treated with a metal salt to make the synthetic fiber swelled or porous, such as by partially dissolving the surface to make it porous and depositing metal hydroxide, and applying hydrophilicity by applying capillary action It is desirable to do so.

As shown in FIG. 2, the side nonwoven fabric 7 is formed of an adhesive such as hot melt over the range from the widthwise intermediate portion to the outer edge of the liquid-impermeable back sheet 2 slightly beyond the absorber side edge. The laminated sheet portion of the side nonwoven fabric 7 and the liquid-impermeable back sheet 2 or the laminated portion in which the absorbent body 4 is interposed between the side nonwoven fabric 7 and the liquid-impermeable back sheet 2, fluid discharge portion H to the corresponding absorbent body side portions a pair of left and right wing flaps W to the position, to form a W, a second wing-shaped flaps W _B now to the buttocks side _position, to form a W _B.

  Next, the example of the form of the absorbent body 4 of the sanitary napkin 1 according to the present invention will be described with specific examples. In the above-described embodiment, the absorber elements 4A and 4B are arranged in parallel so that they do not overlap with each other along the longitudinal direction at the center in the width direction in the rear portion. As described above, each of the absorbent elements 4A and 4B is arranged in the rear portion of the sanitary napkin 1 so that the overlapping portion 20 is formed so as to overlap each other along the longitudinal direction at the central portion in the width direction. In addition, although the thickness of each absorber element 4A, 4B in this superposition | polymerization part 20 is good also as another part, it is preferable to form thinner than another part from a viewpoint of restraining the rigidity of the absorber 4 low.

  Further, as shown in FIG. 1 and the like, the absorbent body 4 is formed with the smallest width dimension of a portion corresponding to the crotch part of the wearer in a state where the absorbent body elements 4A and 4B are combined. It is preferable. Thereby, this sanitary napkin 1 comes to fit around a wearer's leg comfortably.

  Further, as shown in FIG. 5, the absorbent body 4 has the absorbent elements 4 </ b> A and 4 </ b> B substantially coincident with each other in the front region of the sanitary napkin 1 with respect to the site corresponding to the blood drainage port H of the wearer. You may form so that it may overlap and be arranged. Since the absorbent body in the front part has a double structure, the amount of body fluid absorbed in the front part can be increased and the rigidity of the front part can be increased, so that the torsional deformation occurred in the rear part of the napkin. Even so, there is no twist in the front portion, and the napkin can be reliably maintained in close contact with the body.

  Further, as shown in FIG. 6, each absorber element 4 </ b> A, 4 </ b> B includes an outer edge side portion T <b> 1 in the front side portion of the sanitary napkin 1 and an inner edge side portion T <b> 2 in the rear side portion of the sanitary napkin 1. It can be formed thinner than the portion. As a result, as shown in FIG. 4B, the absorbent elements 4A, 4B formed with a normal thickness in the region including the body fluid discharge portion H in a state where the absorbent elements 4A, 4B are combined. By overlapping each other, the absorption performance in the body fluid discharge portion H is ensured, and the outer peripheral side portions T1 and T1 have a thin absorber thickness in the legs around the both sides of the body fluid discharge portion H. By being formed, there is no sense of incongruity around the legs when worn, and the inner edge side portions T2 and T2 of the rear side portion are formed thinly so that they are easily caught in the groove of the buttocks.

  Next, for the purpose of preventing leakage from the rear side of the body fluid, means for fitting in the groove of the buttocks will be described. As a first means, as shown in FIG. 1 and the like, in each of the absorber elements 4A and 4B, the rear end portion of the side opposite to the pair of absorber elements is cut off, and each absorber is cut off. In a state where the elements 4A and 4B are combined, the notch 21 is provided at the center of the rear end of the absorber 4. When the notch 21 is worn, the notch 21 tends to be mountain-folded when both sides of the notch 21 are picked with fingers, and the rear part of the napkin can be sandwiched in the groove of the buttock.

  As a second means, as shown in FIG. 7, the back side of the sanitary napkin 1 between the back sheet 2 and the absorbent body 4 in a state where the absorbent body elements 4A and 4B are combined. In the portion, the elastic body 22 is disposed along the longitudinal direction at the center of the absorber. Due to the elastic force of the elastic body 22, the rear portion of the sanitary napkin 1 can be deformed along the groove of the buttocks and can easily enter the groove of the buttocks.

  Next, means that can be applied to the sanitary napkin 1 according to the present invention to more reliably prevent leakage of body fluid will be described. As shown in FIG. 8, the sanitary napkin 1 according to the present invention has a hydrophilic second sheet 23 along the longitudinal direction at the center in the width direction in a state where the absorbent elements 4 </ b> A and 4 </ b> B are combined. It is preferable to arrange. By disposing the second sheet 23, body fluid can be quickly transferred to the absorber 4 from the front portion to the rear portion, and leakage is prevented.

  9 and 10, the sanitary napkin 1 according to the present invention stands on the use surface side by the contraction force of the elastic elastic member on both sides of the sanitary napkin 1 on the use surface side. You may make it provide solid gather BS and BS. In this case, the three-dimensional gather BS is provided so that only the range corresponding to the intersecting portion 8 of each absorber element stands upright.

  In the three-dimensional gather BS, the inner side portion of the side nonwoven fabric 7 is folded back almost double, and the appropriate position in both ends or in the longitudinal direction is fixed in the middle of the height inside the double sheet. A thread-like elastic elastic member 10 is disposed, and a plurality of, in the illustrated example, two thread-like elastic elastic members 11, 11 are fixed at both ends or at appropriate positions in the longitudinal direction at the upper portion of the thread-like elastic elastic member 10. It is formed by arrange | positioning in the state made. This double sheet portion is folded at the front and rear end portions and is bonded to the absorbent body 4 side in a state of being folded and laminated in a Z-shaped cross section. Solid gathers BS and BS standing on the surface side are formed while forming pockets P and P with openings facing inward.

The three-dimensional gather BS is used for the purpose of preventing the penetration of the side nonwoven fabric 7 different from the liquid-permeable surface sheet 3, specifically menstrual blood or the like, or enhancing the feeling of touch. The nonwoven fabric material is 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 nonwoven fabric prepared with a basis weight of 18 to 23 g / m ² , and silicon-based, paraffin-based, alkylchromic chloride-based water repellents, etc. to reliably prevent the passage of body fluids. A water repellent nonwoven fabric coated with is preferably used.

  Next, a method for surrounding the absorbent body 4 with the crepe paper 5 will be described with reference to FIGS. FIG. 11 is a diagram showing a manufacturing process in the case where the absorber elements 4A and 4B are combined and surrounded by crepe paper. In this case, as shown in FIG. 6A, the absorber elements 4A and 4B are combined in the center in the width direction on the crepe paper 5 fed out from the crepe paper roll (not shown). Placed. Thereafter, both sides in the width direction of the crepe paper 5 are bent on the absorbent body 4 and cut individually (see FIG. 5B). Then, as shown in FIG. 3C, the crepe paper 5 is cut along the periphery of the absorber 4 and conveyed to the next manufacturing process.

  On the other hand, FIG. 12 is a figure which shows a manufacturing process in case each said absorber element is surrounded by crepe paper, respectively. In this case, as shown in FIG. 5A, each of the absorber elements 4A and 4B is placed at the center in the width direction of the crepe paper 5 fed out from a crepe paper roll (not shown). Thereafter, both sides in the width direction of the crepe paper 5 are bent on the absorbent elements 4A and 4B and cut individually (see FIG. 5B). Then, as shown in FIG. 4C, after the absorbent elements 4A and 4B surrounded by the crepe paper 5 are combined with each other, as shown in FIG. The crepe paper 5 is cut along and conveyed to the next manufacturing process.

  Furthermore, in the present invention, each of the absorber elements 4A and 4B may be directly interposed between the top sheet 3 and the back sheet 2 without being surrounded by the crepe paper. In this embodiment, the crepe paper intervenes to increase the apparent bending resistance of the absorber, so that the followability to the movement of the body is not hindered, and the crepe paper intervenes to allow the penetration of body fluid. This is preferable because the speed does not decrease.

  By the way, the absorbent elements 4A and 4B are joined to each other at the intersecting portion 8 of the absorbent elements 4A and 4B by an adhesive means using a hot melt adhesive or a joining means by embossing. In particular, in the present invention, in order to prevent deformation at the rear side portion of the napkin from affecting the twist of the front side portion and the like, from the necessity of securing a certain degree of bonding strength at the intersection 8, among the bonding means, It is preferable to join the absorber elements 4A and 4B by providing the emboss 24 from the upper surface side. In this case, as shown in FIG. 13, the embossing 24 application pattern at the intersection 8 is (A) a straight cross, (B) a dot, (C) a circle, (D) a polygon (rhombus shape). ) And the like.

  The sanitary napkin 1 according to the present invention can be provided with a plurality of adhesive layers 25, 25... For adhering to shorts on the outer surface of the back sheet 2. As the pressure-sensitive adhesive forming the pressure-sensitive adhesive layers 25, 25..., For example, a styrenic polymer, a tackifier, or a plasticizer mainly used is preferably used. Examples of the styrenic polymer include styrene-ethylene-butylene-styrene block copolymers, styrene-butylene-styrene block copolymers, and styrene-isobutylene-styrene copolymers. It may be used or two or more polymer blends. Among these, a styrene-ethylene-butylene-styrene block copolymer is preferable in terms of good thermal stability. As the tackifier and plasticizer, those that are solid at room temperature can be preferably used. Examples of the tackifier include C5 petroleum resins, C9 petroleum resins, dicyclopentadiene petroleum resins, and rosin petroleum resins. Polyterpene resin, terpene phenol resin, etc., and examples of the plasticizer include monomer plasticizers such as trifresil phosphate, dibutyl phthalate, dioctyl phthalate, and polymer plasticizers such as vinyl polymers and polyesters. It is done.

  In particular, in the present invention, as shown in FIGS. 14 and 15, one of the plurality of adhesive layers is adhered along the longitudinal direction at the center in the width direction in the rear portion of the sanitary napkin 1. The agent layer 26 is used. By providing the pressure-sensitive adhesive layer 26, when the rear portion of the sanitary napkin 1 is picked with a finger and formed into a mountain fold on the use surface side, the pressure-sensitive adhesive layers 26 are bonded to each other so that the mountain fold state is maintained. become. As shown in FIG. 15, the pressure-sensitive adhesive layer 26 may be formed in a triangular shape so that the width gradually decreases from the rear side portion to the center portion of the napkin 1 in order to better fit the groove shape of the collar portion. Good.

  In addition, as shown in FIG. 16, the outer surface of the back sheet 2 is provided with at least two adhesive layers 27, 27 that adhere to the shorts, and the adhesive layers 27, 27 are each absorbent element 4A, While being along 4B, it can provide in the aspect which cross | intersects in the site | part corresponding to a wearer's blood drain part H substantially. In this case, the pressure-sensitive adhesive layers 27 and 27 are preferable because they do not hinder the movement of the absorbent body due to torsional deformation of the body and can prevent displacement from shorts. The arrangement pattern of the main-body misalignment-adhering adhesive layers 27, 27 can be in various forms such as (A) a straight cloth shape and (B) a bent line cloth shape. Further, as shown in FIG. 5C, the adhesive layer 26 may be disposed in combination with the above-described groove of the buttock.

  DESCRIPTION OF SYMBOLS 1 ... Sanitary napkin, 2 ... Impermeable back sheet, 3 ... Liquid permeable surface sheet, 4 ... Absorber, 4A * 4B ... Absorber element, 5 ... Crepe paper, 7 ... Side nonwoven fabric, 8 ... Intersection , H ... Body fluid discharge part

Claims (13)

In the absorbent article in which an absorbent body is interposed between the liquid-permeable top sheet and the back sheet,
The absorbent body is composed of a pair of left and right absorbent elements disposed substantially along the longitudinal direction of the absorbent article, and the pair of left and right absorbent elements corresponds to at least the blood drainage port of the wearer. And at least two adhesive layers that are arranged so as to intersect with each other in a region including a part and adhere to shorts on the outer surface of the back sheet, and the adhesive layer is along each absorber element, An absorbent article that is formed so as to intersect at a site corresponding to a blood drainage port of a wearer . In the absorbent article in which an absorbent body is interposed between the liquid-permeable top sheet and the back sheet,
The absorbent body is composed of a pair of left and right absorbent elements disposed along a substantially longitudinal direction of the absorbent article, and the pair of left and right absorbent elements corresponds to at least a blood drainage port of the wearer. They are arranged to intersect at a region containing the site Rutotomoni, whereas absorbent elements of the side is a planar shape that is bent in plan view Do-shaped, absorbent elements on the other side in the reverse dogleg shape in a plan view It has a bent planar shape and is provided with at least two adhesive layers that adhere to the shorts on the outer surface of the back sheet , and the adhesive layer extends along each of the absorbent elements and is almost entirely drained by the wearer. An absorbent article characterized by being formed so as to intersect at a site corresponding to the mouth . The absorptive article according to any one of claims 1 to 2 with the smallest width dimension of the part corresponding to a crotch part of a wearer in the state where said each absorber element was combined. The absorptivity according to any one of claims 1 to 3 , wherein each absorbent element is arranged so as to substantially coincide with each other in a front region of the absorbent article relative to a site corresponding to a blood drainage port of the wearer. Goods. Each absorbent element, wherein the outer edge portion and, according to claim 1-4 or the inner edge side portion in the rear portion of the absorbent article is formed thinner than other portions of the front portion of the absorbent article Absorbent articles. In each of the absorber elements, the rear end of the side opposite to the pair of absorber elements is cut off, and in the state where the absorber elements are combined, a notch is formed in the center of the rear end of the absorber. The absorbent article according to any one of claims 1 to 5, wherein a part is provided. An elastic body is disposed along the longitudinal direction of the center of the absorbent body between the back sheet and the absorbent body and in the rear portion of the absorbent article in a state where the respective absorbent body elements are combined. The absorbent article in any one of Claims 1-6 . The absorbent article according to any one of claims 1 to 7, wherein a hydrophilic second sheet is disposed along the longitudinal direction at the center in the width direction in a state where the absorbent elements are combined. On both sides of the absorbent article on the use surface side, a three-dimensional gather that stands on the use surface side due to the contraction force of the elastic elastic member is provided, and the three-dimensional gather is only in a range corresponding to the intersection of each absorber element. The absorbent article according to any one of claims 1 to 8 , wherein the absorbent article is provided to stand up. The absorbent article according to claim 1-9 which is surrounded Each absorbent element is the crepe paper. The absorbent article according to any one of claims 1 to 9, wherein each of the absorbent elements is directly interposed between the top sheet and the back sheet without being surrounded by crepe paper. The absorbent article according to any one of claims 1 to 11, wherein the absorbent elements are joined to each other by embossing from an upper surface side at an intersection of the absorbent elements. The absorbent article according to any one of claims 1 to 12, wherein a pressure-sensitive adhesive layer is formed along the longitudinal direction at the center part in the width direction on the outer surface of the back sheet and in the rear part of the absorbent article.

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