CN219614214U - Absorbent article - Google Patents

Abstract

An absorbent article having a length along a longitudinal direction and a width along a width direction orthogonal to the longitudinal direction, comprising: an absorber (8) capable of absorbing the discharged liquid; an outer body provided on the non-skin surface side of the absorber (8); a linear contraction member provided in an elongated state in the width direction of the absorber (8); and a plurality of adhesive parts which adhere the absorber (8) to the outer case and are arranged in such a manner that separate parts (23) are provided to separate the adhesive parts from each other, wherein the area of the adhesive parts is larger than the area of the other adhesive parts at the position where the linear shrinkage member overlaps the absorber (8) in the thickness direction.

Description

Absorbent article

Technical Field

The present disclosure relates to absorbent articles.

Background

Absorbent articles such as disposable diapers, diaper pads, and physiological products have been developed (for example, refer to japanese patent application laid-open No. 2018-175885).

Disclosure of Invention

In the case where the absorbent article is, for example, a pants-type diaper, pleats are provided for fastening and fixing the absorbent article to the waist of the wearer. Here, when the end portion in the longitudinal direction of the absorbent body overlaps with the gather, the gather is contracted in the width direction, and therefore the end portion of the absorbent body is also contracted in the width direction. Therefore, the absorber is deformed, and as a result, it is considered that pulp contained in the absorber is brought closer to a predetermined direction. Therefore, there is a possibility that the absorption performance of the absorber may be lowered.

Therefore, it is considered to apply an adhesive to the entire skin surface side of the outer body and attach the absorber to the skin surface side of the outer body. In such a case, even when the gathers shrink in the width direction, the absorbent body is integrated with the outer body to resist shrinkage of the gathers, and therefore deformation of the absorbent body can be suppressed. However, it is thought that the adhesive is cured over the entire surface, and thus the skin feel of the skin surface side of the outer body is deteriorated.

The present disclosure has been made in view of such a practical situation, and an object thereof is to provide a technique for suppressing deformation of an absorber and suppressing deterioration of skin feel of an absorbent article.

In order to solve the above-described problems, in the present utility model, a plurality of adhesive parts for adhering the absorbent body to the outer body are arranged so as to provide separate parts for separating the adhesive parts from each other.

Specifically, an absorbent article according to one aspect of the present disclosure is an absorbent article having a length along a longitudinal direction and a width along a width direction orthogonal to the longitudinal direction, and includes an absorbent body capable of absorbing discharged liquid and an outer body provided on a non-skin surface side of the absorbent body. The absorbent article is provided with: a 1 st linear contraction member provided in an elongated state along the width direction on a longitudinal end side of the absorber; and an adhesive portion that adheres the absorber to the outer case and is arranged in a plurality of separate portions that separate the adhesive portions from each other, wherein the area of the adhesive portion is larger than the area of the other adhesive portion at a portion where the 1 st linear shrinkage member overlaps the absorber in the thickness direction.

The bonding portions in the separated state may extend in the width direction, and the length direction of the bonding portion may be longer than the length direction of the bonding portions in the separated state at a portion where the 1 st linear shrinkage member overlaps in the thickness direction.

In the region where the bonding portions exist, the distances between adjacent bonding portions in the separated state may be equal to each other.

The absorbent body may include an absorbent core including pulp fibers, a core wrap sheet covering the absorbent core, and a sheet covering the absorbent body, wherein the sheet and the core wrap sheet form an extension portion extending outward in a longitudinal direction of a longitudinal end portion of the absorbent core, and the 1 st linear contraction member overlaps the extension portion in a thickness direction.

The sheet may cover the side surface portion in the width direction of the absorber, and may be bonded to the absorber at the side surface portion.

The sheet may be configured such that an end portion in the width direction of the sheet covering the absorber is not bonded to the exterior body.

The bonding portion in the separated state may have a rectangular shape extending in the width direction.

The disposable diaper may further include a 2 nd linear contraction member, wherein the 2 nd linear contraction member overlaps the absorbent body in the thickness direction so as to traverse the absorbent body in the width direction in a pubic region corresponding to a pubic bone of the wearer on an abdomen side of the wearer when the disposable diaper is worn, and the adhesive portion is not disposed in an extension region of the 2 nd linear contraction member.

The width direction dimension of the adhesive portion may be longer than the width direction dimension of the other adhesive portions in the separated state at the portion where the 1 st linear shrinkage member overlaps in the thickness direction.

According to the present utility model, deformation of the absorber can be suppressed and deterioration of the skin feel of the absorbent article can be suppressed.

Drawings

Features, advantages, and technical and industrial significance of exemplary embodiments of the present utility model will be described below with reference to the accompanying drawings, in which like reference numerals denote like elements, and in which:

fig. 1 is a perspective view of a diaper of an embodiment.

Fig. 2 is an exploded perspective view of the diaper of the embodiment.

Fig. 3 illustrates an outline of an developed view of a diaper according to an embodiment.

Fig. 4 illustrates a detailed view of the back sheet as seen from the skin side.

Fig. 5 is a schematic view showing a cross-sectional structure in the longitudinal direction of the diaper.

Fig. 6 is a schematic view showing a cross-sectional structure in the width direction of the diaper.

Detailed Description

Embodiment(s)

Hereinafter, a diaper according to an embodiment of the present utility model will be described with reference to the drawings. The following embodiments are examples, and the present disclosure is not limited to these embodiments.

Fig. 1 is a perspective view of an adult pants-type disposable diaper (hereinafter, simply referred to as "diaper") according to an embodiment. In a diaper, a direction connecting a front body disposed to face an abdomen of a wearer and a rear body disposed to face a back is set as a longitudinal direction. The crotch portion disposed in the crotch (disposed opposite the crotch) of the wearer is located between the front body (one side in the longitudinal direction) and the rear body (the other side in the longitudinal direction) (the center in the longitudinal direction). In addition, when the diaper is worn on a wearer, the side facing the skin of the wearer is referred to as the skin surface side, and the opposite side to the skin surface side is referred to as the non-skin surface side. The direction connecting the skin surface side and the non-skin surface side is referred to as the thickness direction, and the direction perpendicular to either the longitudinal direction or the thickness direction is referred to as the width direction. The case of viewing from the thickness direction is referred to as planar view. The diaper 1 has a length along the longitudinal direction and a width along the width direction orthogonal to the longitudinal direction, and is worn on the crotch of a wearer. The term "direction" used in the present utility model refers to a direction that coincides with the front, rear, left, and right of the wearer when the diaper 1 is worn on the wearer. For example, in the present utility model, the term "left-right direction" refers to a direction that coincides with the left-right direction of the wearer when the diaper 1 is worn on the wearer.

In the present embodiment, as an example of the absorbent article, a pants-type disposable diaper having a tubular structure with an opening into which the abdominal region of the wearer enters and a pair of left and right openings through which the left and right lower limbs of the wearer pass is exemplified, but the "absorbent article" in the present utility model is not limited to pants-type disposable diapers for adults. The term "absorbent article" as used herein includes pants-type disposable diapers for children. Further, there is also provided an absorbent article capable of wrapping various forms of the abdominal periphery and the crotch, such as a belt-type disposable diaper having a tubular structure by attaching a belt fixed to a portion near one end of a sheet-like member covering the crotch (pudendum) of a wearer from the front body over the back body to a portion near the other end of the sheet-like member.

The diaper 1 has: a crotch region 1B, wherein the crotch region 1B is a portion corresponding to a crotch region that covers a pudendum (crotch) of a wearer in a worn state; a front body region 1F, the front body region 1F being a portion corresponding to a front body in a waist of a wearer and covering an abdomen side of the wearer; and a back region 1R, the back region 1R being a portion corresponding to the back in the waist of the wearer and covering the back side of the wearer. Here, the front body region 1F is located on the front side of the crotch region 1B, and the rear body region 1R is located on the rear side of the crotch region 1B. Since the diaper 1 in the present embodiment is a pants-type disposable diaper, the left edge of the front body region 1F and the left edge of the rear body region 1R are joined to each other, and the right edge of the front body region 1F and the right edge of the rear body region 1R are joined to each other. Therefore, in the diaper 1, the trunk opening portion 2T is formed by the upper edge of the front body region 1F and the upper edge of the rear body region 1R. In the diaper 1, a left leg opening 2L is formed in a left portion of the crotch region 1B where the above-described joining is not performed, and a right leg opening 2R is formed in a right portion of the crotch region 1B. When the diaper 1 is worn with the left lower limb of the wearer inserted into the left lower limb opening 2L, the right lower limb of the wearer inserted into the right lower limb opening 2R, and the trunk portion of the wearer entering the trunk opening 2T, the front body region 1F is disposed on the abdomen side of the wearer, the rear body region 1R is disposed on the back side of the wearer, and the left lower limb opening 2L and the right lower limb opening 2R are fixed to the body of the wearer in a state surrounding the thigh portion of the wearer. Since the diaper 1 is fixed to the body of the wearer in this manner, the wearer can freely move while wearing the diaper 1.

In the diaper 1, an absorber capable of absorbing and retaining liquid is mainly disposed around the crotch region 1B. In the diaper 1, in order to suppress formation of a gap which is a liquid outflow path between the diaper 1 and the skin of the wearer, a three-dimensional gather 3BL is provided in a left leg opening 2L surrounding the thigh of the left leg of the wearer, a three-dimensional gather 3BR is provided in a right leg opening 2R surrounding the thigh of the right leg of the wearer, and a waist gather 3R and an abdomen gather (japanese) 12 are provided in a portion surrounding the abdomen of the wearer. Leg gathers 3LL, 3LR are provided at positions surrounding the root portions of the legs of the wearer. The three-dimensional gathers 3BL, 3BR, the waist gather 3R, and the abdomen gather 12 are adhered to the skin of the wearer by the elastic force of the linear rubber. The leg gathers 3LL and 3LR prevent gaps from being formed between the root portions of the legs of the wearer and the diaper 1. Therefore, the discharged liquid discharged from the private parts of the wearer hardly leaks out of the diaper 1 and is absorbed by the absorber of the diaper 1.

The diaper 1 can be used in combination with an inner pad, not shown. The inner pad is a substantially rectangular absorbent article provided with an absorber, and absorbs discharged liquid. In the case of using the diaper 1 and the inner pad in combination, the inner pad is placed on the skin surface side of the diaper 1 so as to abut against the discharge hole of the wearer. The discharged liquid is first absorbed by the inner pad, and only the discharged liquid which has not been absorbed by the inner pad reaches the absorber of the diaper 1 and is further absorbed. Therefore, even when the amount of discharged liquid is large, leakage of discharged liquid from the diaper 1 can be prevented. In addition, when the amount of discharged liquid is small and the whole of the discharged liquid can be absorbed by the inner pad, even if the discharged liquid is generated, only the inner pad needs to be replaced, so that the intervention (nursing) cost can be reduced. In addition, the diaper 1 can be used for a long time.

Fig. 2 is an exploded perspective view of the diaper 1 of the embodiment. The diaper 1 has a cover sheet 4 and an inner cover sheet 5. The cover sheet 4 and the inner cover sheet 5 are substantially hourglass-shaped (gourd-shaped) sheets bonded to each other to form the outer surface of the diaper 1, and the front end portion on the front body region 1F side and the rear end portion on the rear body region 1R side are the same. In a state of being worn on a wearer, the cover sheet 4 is laminated on the non-skin surface side of the wearer, and the inner cover sheet 5 is laminated on the wearer side. Linear rubber for forming the waist gather 3R, the abdomen gather 12, and the leg gathers 3LL, 3LR is provided between the cover sheet 4 and the inner cover sheet 5. Further, a band-shaped expansion member such as rubber can be appropriately selected instead of the linear rubber.

For the cover sheet 4 and the inner cover sheet 5, for example, nonwoven fabrics made of liquid impermeable thermoplastic resins may be used as the materials for suppressing leakage of discharged materials. Here, examples of the liquid-impermeable thermoplastic resin include Polyethylene (PE) and polypropylene (PP).

The diaper 1 further includes a back sheet 6, an absorber 8, and a top sheet 9, which are laminated in this order on the wearer-side surfaces of the cover sheet 4 and the inner cover sheet 5. The back sheet 6 is a substantially rectangular parallelepiped sheet having a length extending from the front body to the rear body of the wearer through the crotch in the longitudinal direction and a predetermined width in the width direction orthogonal to the longitudinal direction. The absorber 8 and the top sheet 9 are sheet-like members having a substantially rectangular appearance similar to the back sheet 6, and are sequentially laminated on the back sheet 6 in a state where the longitudinal direction matches the longitudinal direction of the back sheet 6. The back sheet 6 is a sheet made of a liquid impermeable thermoplastic resin for suppressing leakage of discharged material. The top sheet 9 is a sheet-like member disposed on the skin surface side of the wearer so as to cover the water absorbing surface of the absorber 8. Part or all of the top sheet 9 has liquid permeability. Therefore, in a state where the diaper 1 is worn, liquid discharged from the wearer is immersed in the absorbent body 8 through the topsheet 9 which may come into contact with the wearer's skin, where it is absorbed. Examples of the liquid-permeable sheet include woven fabrics, nonwoven fabrics, and porous films. In addition, the top sheet 9 may have hydrophilicity.

The absorbent body 8 has an absorbent core 8c composed of 1 or more pads and a core wrap sheet 7 wrapped around the absorbent core 8 c. The absorber 8 is capable of absorbing discharged liquid generated from the wearer. The absorbent core 8c has a structure in which a particulate absorbent resin (high molecular absorbent material) such as SAP (super absorbent polymer: super Absorbent Polymer) which is a hydrophilic polymer having a crosslinked structure capable of absorbing and retaining water is retained in the gaps between the short fibers of cellulose fibers such as pulp fibers, rayon fibers, and cotton fibers and the short fibers obtained by hydrophilizing synthetic fibers such as polyethylene, polypropylene, and polyethylene terephthalate. When the absorbent core 8c absorbs liquid discharged from the wearer, the absorbent resin in the gaps held in the short fibers is swelled to hold the liquid in the short fibers. In the present embodiment, the absorbent core 8c is substantially hourglass-shaped with a narrowed central portion. The absorbent core 8c may take an appropriate shape according to the purpose. Examples of the shape of the absorbent core 8c include a rectangular shape, an elliptical shape, and various other shapes.

The core wrap sheet 7 is a thin liquid-permeable sheet, and by wrapping the absorbent core 8c with the core wrap sheet 7, the SAP of the absorbent core 8c described above is less likely to be mixed into other structures. In addition, the deformation of the absorbent core 8c is suppressed. The core wrap sheet 7 can be formed of pulp fibers, and as an example, a tissue can be used. The core wrap sheet 7 may be 1 sheet, or may be composed of 2 sheets, that is, an upper sheet disposed on the skin side of the wearer and a lower sheet disposed on the non-skin side of the wearer and wound around the side surface and the skin side of the absorbent core 8 c. When the core wrap sheet 7 is formed of 2 sheets, the width direction end portion of the upper side sheet may be covered with another sheet (for example, side sheets 10L and 10R, back sheet 6, and top sheet 9 described later). The absorber 8 is enclosed by the back sheet 6 and the top sheet 9, and the shape of the absorber can be suppressed by these sheets, so that the core wrap sheet 7 may not be provided.

The back sheet 6, the absorber 8 and the top sheet 9 all extend from the front body region 1F to the back body region 1R. Therefore, when the back sheet 6, the absorber 8, and the top sheet 9 are laminated to cover the wearer's pudendum (crotch), both ends in the longitudinal direction of each of the back sheet 6, the absorber 8, and the top sheet 9 are positioned on the wearer's abdomen side and back side. That is, the pudendum of the wearer is covered with the absorber 8 from the abdomen side to the back side of the wearer. Therefore, regardless of whether the wearer discharges the liquid to the outside in the abdomen-down posture or the back-down posture, the discharged liquid contacts the absorber 8 via the top sheet 9.

The diaper 1 has elongated belt-shaped side panels 10L and 10R for forming the above-described three-dimensional gathers 3BL and 3BR. The side sheets 10L and 10R are provided on the long side of the top sheet 9. The linear rubbers 10L1 and 10R1 are bonded to the side sheets 10L and 10R in the longitudinal direction. Thus, when the edge 4F4 of the cover sheet 4, which is the left edge of the front body region 1F, and the edge 4R4 of the cover sheet 4, which is the left edge of the back body region 1R, are joined to each other, and the edge 4F5 of the cover sheet 4, which is the right edge of the front body region 1F, and the edge 4R5, which is the right edge of the back body region 1R, are joined to each other, the side sheets 10L, 10R are pulled in the longitudinal direction by the contraction force of the linear rubbers 10L1, 10R1 and stand up from the top sheet 9 along the folding lines 10L2, 10R2, as in the diaper 1 in the finished state shown in fig. 1. As a result, three-dimensional gathers 3BL, 3BR are formed which prevent liquid from flowing out of the left and right lower limb openings 2L, 2R. The bonding method of the edges 4F4 and 4R4, and the edges 4F5 and 4R5 is not particularly limited, and may be performed by heat sealing, high-frequency sealing, ultrasonic sealing, or the like, for example.

The diaper 1 further includes an end sheet 11F that is laminated on the wearer side surface in the front region 1F of the cover sheet 4, and an end sheet 11R that is laminated on the wearer side surface in the back region 1R of the cover sheet 4, with the back sheet 6, the absorber 8, the top sheet 9, and the side sheets 10L, 10R interposed therebetween. The end pieces 11F, 11R are elongated pieces that overlap the cover piece 4 at one end side in the longitudinal direction of the top piece 9. The end pieces 11F, 11R are non-water-impermeable nonwoven fabrics, and reinforce the cover piece 4 mainly at the waist abutment portion of the diaper 1. The end sheets 11F and 11R are disposed closer to the skin surface than the laminate formed by the back sheet 6, the absorber 8, the top sheet 9, and the side sheets 10L and 10R, and prevent the end of the laminate from directly contacting the skin surface to give the wearer discomfort (discomfort).

Fig. 3 is a view schematically showing a state in which the diaper 1 of the embodiment is developed and extended. Part (a) in fig. 3 schematically shows the internal configuration in the case of the diaper 1 in the developed and elongated state when viewed from the left side. Part (B) in fig. 3 schematically shows a plan view of the diaper 1 in an unfolded and elongated state. In fig. 3 (B), the side panels 10L and 10R and the end panels 11F and 11R are not shown. One end side of the cover sheet 4 is folded back at folding lines 4FF and 4RF shown in fig. 2. The above-described waist gather 3R is formed by adhering the linear rubbers (linear rubbers) 4F1, 4F2 in an elongated state to the front body region of the cover sheet 4 and adhering the linear rubbers (linear rubbers) 4R1, 4R2 in an elongated state to the rear body region of the cover sheet 4.

The linear rubbers 4F1 and 4F2 are provided in the order of the linear rubbers 4F1 and 4F2 from the side of the folding line 4FF along the folding line 4FF (see fig. 2) that forms the upper edge of the precursor region 1F when folded back. The linear rubbers 4R1 and 4R2 are also provided in the order of the linear rubbers 4R1 and 4R2 from the folded-back line 4RF side along the folded-back line 4RF that forms the upper edge of the rear body region 1R when folded back, similarly to the linear rubbers 4F1 and 4F 2.

Therefore, the linear rubbers 4F1, 4F2 are provided on the cover sheet 4 in such an orientation that the direction around the trunk, which is the extension and contraction direction, is the right and left direction of the diaper 1. The linear rubbers 4R1, 4R2 are provided on the cover sheet 4 in such a manner that the longitudinal direction, which is the extension and contraction direction, is the lateral direction of the diaper 1. Therefore, when the edge 4F4 and the edge 4R4 (see fig. 2) are joined to each other and the edge 4F5 and the edge 4R5 are joined to each other, the linear rubbers 4F1, 4F2 and the linear rubbers 4R1, 4R2 form a substantially annular stretchable member surrounding along the trunk opening 2T, and function to shrink the trunk opening 2T in the trunk-surrounding direction. That is, the linear rubbers 4F1 and 4F2 and the linear rubbers 4R1 and 4R2 exert contraction force to bring the diaper 1 into close contact with the wearer, thereby preventing a gap from being formed between the diaper 1 and the abdominal circumference of the wearer. The linear rubbers 4F2 and 4R2 overlap the absorber 8 at a part of the crotch region 1B side thereof. The linear rubbers 4F2 and 4R2 are examples of the 1 st linear shrinkage member in the present disclosure.

The linear rubbers 4F1 and 4R1 are provided so as to extend in the left-right direction along portions that are edges of the upper sides of the front body region 1F and the rear body region 1R shown in fig. 1. The linear rubbers 4F2 and 4R2 are disposed in parallel with a predetermined interval. The linear rubbers 4F1 and 4R1 are fastened relatively strongly to the abdomen of the wearer in a state where the diaper 1 is worn, at a position above the linear rubbers 4F2 and 4R 2. The linear rubbers 4F1 and 4R1 serve to prevent the diaper 1 from being brought into close contact with the wearer, from shifting the wearing position, and from leaking out of the discharged liquid from the abdomen and back. The linear rubbers 4F2, 4R2 alleviate the sense of compression to the wearer caused by the contraction force of the linear rubbers 4F1, 4R 1. In addition, in the case of using the inner pad, the displacement of the inner pad is suppressed.

The linear rubber 4F3 and the linear rubber 4R3 are bonded to the cover sheet 4 in an elongated state. The linear rubbers 4F3 and 4R3 are stretchable members provided in the cover sheet 4 in the crotch region 1B side of the linear rubbers 4F2 and 4R 2. However, unlike the other linear rubbers bonded so as not to be bent from the left end to the right end of the cover sheet 4, the linear rubbers 4F3 and 4R3 are arranged so as to be bent in the direction of the crotch region 1B. By disposing the linear rubbers 4F3, 4R3 so as to be curved in this way, the disposed areas of the linear rubbers 4F3, 4R3 have the function of leg gathers 3LL, 3LR of bringing the peripheries of the left and right lower limb openings 2L, 2R into contact with the skin surface of the wearer. The linear rubber 4F3 is an example of the 2 nd linear shrinkage member in the present disclosure.

The linear rubber 4F3 on the front body region 1F side crosses the absorber 8 in the width direction and continues in the width direction. The portion of the linear rubber 4F3 that traverses the absorber 8 in the width direction corresponds to the vicinity of the pubis of the wearer when the diaper 1 is worn. The urethral opening of the wearer is in contact with the skin surface side of the diaper 1 on the crotch side of the portion where the linear rubber 4F3 crosses the absorber 8. In other words, the linear rubber 4F3 is provided in the pubic region of the wearer and overlaps the absorber 8.

On the other hand, the linear rubber 4R3 on the rear body region 1R side overlaps the widthwise outer side of the absorbent core 8c at the narrowed portion of the hourglass-shaped absorbent core, but does not traverse the absorbent body 8 in the widthwise direction. The linear rubber 4R3 is disposed in a region that abuts the buttocks of the wearer near the absorber 8. In the back region 1R, the diaper 1 is strongly pressed by the pressure applied to the buttocks of the wearer compared to the front region 1F. Therefore, the linear rubber 4R3 is not provided at the widthwise central portion of the absorber 8, but is biased to pull apart widthwise end portions of the absorber 8 from each other, whereby the diaper 1 is brought into contact with the wearer with an appropriate adhesion force.

The cover sheet 4 is folded back at the folding lines 4FF and 4RF to extend to the arrangement regions of the linear rubbers 4F1 and 4R1, and the arrangement regions of the linear rubbers 4F1 and 4R1 are reinforced at the folded back portions. The end pieces 11F, 11R are provided in the arrangement regions of the linear rubber 4F2 and the linear rubber 4R2 where the cover piece 4 folded back at the folding lines 4FF, 4RF does not extend, and reinforce the arrangement regions of the linear rubber 4F2 and the linear rubber 4R 2.

In the present utility model, the state in which the sheets overlap is not limited to the state in which the sheets overlap each other in the state in which the sheets are in contact with each other over the entire surface, and is a concept including the state in which a part of the sheets overlap each other. For example, a portion of the end piece 11F on one end side in the longitudinal direction of the back piece 6 overlaps with a portion of the cover piece 4 in a contact state. In the diaper 1, the cover sheet 4, the end sheets 11F, 11R, the inner cover sheet 5, and the side sheets 10L, 10R are stacked in addition to the back sheet 6 and the top sheet 9 sandwiching the absorber 8, and therefore, it can be said that a laminate in which these multiple sheets are stacked is provided.

Fig. 4 illustrates a detailed view of the backsheet 6 as seen from the skin surface side. As shown in fig. 4, a plurality of adhesive portions formed by applying HM (Hot Melt) adhesive 20 extending in the width direction are arranged on the skin surface side of the back sheet 6. More specifically, the HM adhesive 20 is applied in a rectangular shape so as to extend in the width direction. The HM adhesive 20 is provided with a plurality of separating portions 23 (an example of a "separating portion" in the present disclosure) in the longitudinal direction, and is applied by being arranged at equal intervals. That is, it can be said that the distances between adjacent bonding portions in the separated state are substantially equal in the region where the bonding portions exist. The HM adhesive 20a applied to the arrangement region of the linear rubbers 4F2, 4R2 at the end in the longitudinal direction, which is not shown, has a larger area than the HM adhesive 20b in the other region. In the example shown in fig. 4, the HM adhesive 20a is longer in the longitudinal direction and longer in the width direction than the HM adhesive 20b of the other region, and thus the area is large. The application shape of the HM adhesives 20a and 20b as the adhesive portion is rectangular, and thus can be easily performed.

The method of making the area of the HM adhesive 20a larger than the area of the HM adhesive 20b of the other area is not limited to the above method. For example, the length of the HM adhesive 20a in the longitudinal direction may be the same as the length of the HM adhesive 20b in the other region, and the width of the HM adhesive 20a may be larger than the width of the HM adhesive 20b in the other region. The length of the HM adhesive 20a in the longitudinal direction may be longer than the length of the HM adhesive 20b in the other region and may be set to have the same width as the HM adhesive 20b in the other region.

By applying the HM adhesive in this manner, the periphery of the absorber 8 is reinforced and the rigidity is increased in the application region of the HM adhesive 20 a. The linear rubbers 4F2 and 4R2 are overlapped in the application region of the HM adhesive 20a, and the linear rubbers 4F2 and 4R2 apply force so as to contract the longitudinal end portions of the absorber 8, but since the rigidity of the periphery of the absorber 8 is high, the absorber 8 is not likely to bend in the width direction against the urging force of the linear rubbers 4F2 and 4R 2.

As shown in fig. 4, in the precursor region 1F, a linear rubber 4F3, not shown, is disposed so as to traverse the absorber 8 in the width direction, and in the region where the linear rubber 4F3 overlaps the absorber 8, there is a region where the HM adhesive 20 is not applied, that is, where no adhesive portion is disposed. The absorber in the vicinity of the crotch region 1B is relatively easily deformed by the pressure of the wearer's body weight or the like in the state where the diaper 1 is worn. When the deformation reaches the front body region 1F side, the absorber 8 cannot properly hold the discharged liquid in the front body region 1F, and there is a possibility that the discharged liquid discharged from the urethral orifice of the wearer or the like leaks from the end of the front body region 1F.

When there is a region where the HM adhesive 20 is not applied in the arrangement region of the linear rubber 4F3, the absorber 8 is not reinforced at this portion and is softer than the surrounding region. Therefore, even when the absorber 8 is deformed on the crotch region 1B side, the deformation does not reach the longitudinal end portion side of the front body region 1F, and the longitudinal end portion of the absorber 8 is easily maintained in its shape. Therefore, the absorber 8 as a whole can continuously maintain an appropriate function.

Fig. 5 and 6 illustrate an example of a partially enlarged view of the vicinity of the absorber 8 in a cross section of the diaper 1. Fig. 5 is a schematic view showing a cross-sectional structure in the longitudinal direction of the diaper. More specifically, the process is carried out,

fig. 5 is an example of a partially enlarged view of a cross section (corresponding to the arrow A-A cross section in fig. 4) of the diaper 1 taken in the thickness direction along a longitudinal plane at the center in the width direction.

The absorbent core 8c is covered with a core wrap sheet 7. An adhesive HM is applied to the inner side of the core wrap sheet 7, i.e., the side of the absorbent core 8c, and the adhesive HM melts, whereby the inner surface of the core wrap sheet 7 adheres to the absorbent core 8c to become the absorbent body 8. In fig. 5, the top sheet 9 is omitted, but the absorbent body 8 is covered with the top sheet 9 on the skin surface side and with the back sheet 6 on the non-skin surface side.

The absorbent core 8c is shorter than the length of the core wrap sheet 7 in the longitudinal direction. Therefore, the absorbent body 8 is configured by bonding the upper core wrap sheet 7f and the lower core wrap sheet 7b with the adhesive HM at a position closer to the longitudinal end side than the longitudinal end of the absorbent core 8c near the longitudinal end of the absorbent body 8. Similarly, the length of the back sheet 6 in the longitudinal direction is longer than the length of the absorbent core 8c in the longitudinal direction. Therefore, the absorbent body 8 composed only of the core wrap sheet 7 is bonded to the backsheet 6 by the adhesive HM at a position closer to the non-skin surface side than the longitudinal end portion of the absorbent core 8 c. The combination of the sheets and each sheet are bonded by the adhesive HM, whereby an extension portion having high rigidity is formed at the longitudinal end portion of the absorber 8.

The extended portion thus formed is firmly bonded to the inner cover sheet 5 constituting the exterior body by the HM adhesive 20a having a larger area than the other HM adhesive 20 b. Since the rigidity of the extension portion is high and the extension portion is reinforced by the HM adhesive 20a, the absorber 8 is less likely to be deformed at the end in the longitudinal direction. The linear rubbers 4F2 and 4R2 (an example of the "1 st linear shrinkage member" of the present disclosure) forming the abdominal gather 12 mainly overlap with the extension portion. The backsheet 6 is combined with the topsheet 9, and functions as a sheet for covering the absorber in the present disclosure.

Fig. 6 is a schematic view showing a cross-sectional structure in the width direction of the diaper. More specifically, fig. 6 is an example of a partially enlarged view of a cross section (corresponding to the B-B arrow cross section in fig. 4) of the diaper 1 taken in the thickness direction along a plane in the width direction at the center in the longitudinal direction (crotch region). In fig. 6, the thickness of each member is exaggeratedly represented for the sake of understanding, but in reality, each member constituting the diaper 1 is extremely thin. Therefore, there is practically no gap between the upper core wrap sheet 7f and the top sheet 9, and there is practically no gap between the back sheet 6 and the inner cover sheet 5. Therefore, the back sheet 6 and the inner cover sheet 5 are bonded by the HM adhesive 20 in the same manner as the side sheets 10L and 10R.

The back sheet 6 covers the side surface portion of the absorber 8 and extends to the vicinity of the skin surface side widthwise end portion of the absorber 8. In addition, an adhesive such as a hot melt adhesive is applied and bonded between the back sheet 6 and the absorber 8 at the side surface portion of the absorber 8, and the adhesive is reinforced.

In the present embodiment, the side sheets 10L and 10R extend to the vicinity of the non-skin-surface-side widthwise end portions of the absorber 8. The side sheets 10L and 10R cover the side surface portions of the absorber 8 at positions further outside in the width direction of the back sheet 6. Therefore, the widthwise end portions of the absorber 8 are protected by being multiply covered with a plurality of sheets at the side portions thereof and further bonded, and are less likely to cause a shape to be taken even if the weight of the wearer is applied. The side sheets 10L and 10R also function as sheets covering the absorber in the present disclosure or as sheets, as in the back sheet 6. Further, the side portion of the absorber 8 may not be provided with an adhesive portion, and an adhesive portion may be provided between the side sheets 10L and 10R and the back sheet 6 in addition to the back sheet 6 and the absorber 8, so that a stronger reinforcing portion may be formed. The side portions of the absorber 8 do not directly contact the skin of the wearer when the diaper 1 is worn, and therefore, even if the side portions are cured (hardened) by reinforcement, the wearer is not given a sense of discomfort.

As shown in fig. 6, the application width of the HM adhesive 20 is smaller than the width of the absorber 8, and therefore, the width-direction end portions of the back sheet 6 and the side sheets 10L, 10R are non-bonded to the inner cover sheet 5. In other words, the end portion of the sheet covering the absorber 8 in the width direction is not bonded to the outer body.

According to this configuration, even when the outer body is contracted by the action of the wearer or the biasing force of the linear rubbers 4F2, 4R2, 4F3, 4R3, the contraction is less likely to be transmitted to the widthwise end portions of the absorber 8. Therefore, the absorber 8 can be prevented from being deformed. As described above, the side surface portions of the absorber 8 are covered with a plurality of sheets and bonded as the case may be. By the synergistic effect of these configurations, the shape of the absorber 8 can be further prevented.

[ action, effect ]

According to the diaper 1 described above, the linear rubbers 10L1, 10R1 forming the three-dimensional gathers 3BL, 3BR shrink in the longitudinal direction (see fig. 2), but the HM adhesive 20 (20 a and 20 b) provided between the core wrap sheet 7 and the backsheet 6 extends in the width direction orthogonal to the longitudinal direction and is applied so as to be separated in the longitudinal direction (see fig. 4). Therefore, the HM adhesive 20 is less likely to peel from the back sheet 6 by the contraction force in the longitudinal direction of the linear rubbers 10L1, 10R1. The absorber 8 and the back sheet 6 are integrated, so that the contraction force of the linear rubbers 4F2 and 4R2 of the abdominal gathers 12 is easily resisted, and the absorber 8 easily maintains its shape.

Further, according to the diaper 1 described above, as shown in fig. 5 and 6, the absorbent core 8c is attached to the backsheet 6 in a state of being covered with the core wrap sheet 7. The side surface of the absorber 8 is covered with the back sheet 6 and the side sheets 10L and 10R on the outer side in the width direction. Therefore, the absorber 8 is integrated with the backsheet 6 and the side sheets 10L and 10R, and can easily maintain the shape thereof against the force applied to the diaper 1. Further, since deformation of the absorbent core 8c is suppressed, deflection of pulp fibers and the like contained in the absorbent core 8c in a predetermined direction can be suppressed, and the liquid discharge absorption performance of the absorbent body 8 can be maintained.

In addition, according to the diaper 1 described above, the HM adhesive 20 (20 a and 20 b) provided between the back sheet 6 covering the absorbent core 8c and the outer case including the inner cover sheet 5 extends in the same direction as the contraction direction of the linear rubbers 4F2, 4R2 of the abdominal gathers 12, that is, in the width direction. Referring to fig. 4, the extension region of the absorber 8 is reinforced by the adhesive portion, and is easily resistant to contraction in the width direction. The area of the HM adhesive 20a applied to the end in the longitudinal direction is larger than the area of the HM adhesive 20b in the separated state in the other region. That is, the application area of the HM adhesive 20a is larger than that of the HM adhesive 20b in the separated state of the other areas. The linear rubbers 4F2 and 4R2 of the abdominal gather 12 overlap with the end portions in the thickness direction. Therefore, the absorber 8 is reinforced in the arrangement region of the linear rubbers 4F2, 4R2, and is not easily bent in the width direction.

In addition, according to the diaper 1 described above, the HM adhesives 20 (20 a and 20 b) provided between the back sheet 6 covering the absorbent core 8c and the outer case including the inner cover sheet 5 are applied in plural at equal intervals in the longitudinal direction. Therefore, even when the HM adhesive 20 is melted and solidified, the flexibility of the area where the HM adhesive 20 is not applied can be maintained. The regions maintaining such flexibility are arranged at equal intervals in the longitudinal direction. Therefore, the skin feel is less likely to deteriorate when the wearer contacts the non-skin side of the diaper 1.

In addition, according to the diaper 1 described above, as shown in fig. 6, the widthwise end portions of the absorber 8 are covered with sheets, and the absorber side edges, which are the widthwise end portions, are not bonded to the outer body. Therefore, even when an unexpected shrinkage occurs in the outer cover in the width direction, the shrinkage is less likely to be transmitted to the absorbent core 8c, and the pulp fibers and the like contained in the absorbent core 8c can be suppressed from being biased in the predetermined direction. Therefore, the deterioration of the absorption performance of the absorber 8 can be suppressed.

Further, according to the diaper 1 described above, as shown in fig. 6, the absorbent core 8c is covered with 2 sheets of the upper core wrap sheet 7f and the lower core wrap sheet 7 b. Further, the upper core wrap sheet 7f overlaps the lower core wrap sheet 7b at both lateral sides of the skin surface side of the absorbent core 8c in the width direction. Therefore, in the overlapping region of the upper core-wrap sheet 7f and the lower core-wrap sheet 7b, the permeability of the discharged liquid is reduced. Therefore, the discharged liquid easily flows in the longitudinal direction over the upper core wrap sheet 7f, and the discharged liquid is absorbed over a wide range of the absorber 8. Therefore, the absorption efficiency of the absorber 8 is improved.

Modification example

The HM adhesive 20 may be applied so as to extend in the longitudinal direction, not in the width direction. The length direction and width direction dimensions of the HM adhesive 20a at the end in the length direction are not limited to the above examples, and may be larger than the area of the HM adhesive 20b in the separated state in other regions. In addition, the separation distances of the HM adhesives 20 in the separated state may be unequal. The absorber 8 and the linear rubbers 4F2 and 4R2 forming the abdominal gathers 12 may not overlap each other in the thickness direction. The absorbent core 8c and the core wrap sheet 7 may be bonded to each other at the ends in the longitudinal direction. The HM adhesive 20 is not limited to being applied to the back sheet 6 in a rectangular shape, and may be applied in other shapes such as a circular shape. The number and shape of the absorbent cores are not limited to the above examples.

In the above embodiment, the application width of the HM adhesive 20 is smaller than the width of the absorber 8, and the deformation of the widthwise end portion of the absorber 8 when the diaper 1 is contracted in the widthwise direction can be suppressed, but the application width of the HM adhesive 20a may be larger than the width of the absorber 8. At the portion where the HM adhesive 20a is applied, the absorber 8 and the linear rubber forming the abdominal gathers 12 overlap in the thickness direction, and the periphery of the absorber 8 is strongly biased as compared with other portions. Therefore, the application width of the HM adhesive 20a can be made wider than the width of the absorber 8, and the width of the application area of the HM adhesive 20a can be enlarged, thereby forming a reinforcing portion with higher rigidity.

The embodiments and modifications disclosed above can be combined separately.

Claims (9)

1. An absorbent article having a length along a longitudinal direction and a width along a width direction orthogonal to the longitudinal direction, comprising an absorbent body (8) capable of absorbing discharged liquid and an outer body provided on a non-skin surface side of the absorbent body (8), the absorbent article comprising:

a 1 st linear contraction member provided in an elongated state along the width direction on a longitudinal end side of the absorber (8); and

and a plurality of adhesive parts which adhere the absorber (8) to the outer case and are arranged so as to provide separate parts (23) which separate the adhesive parts from each other, wherein the area of each adhesive part is larger than the area of the other adhesive parts at the part of the 1 st linear contraction member overlapping the absorber (8) in the thickness direction.

2. The absorbent article of claim 1, wherein the absorbent article comprises,

the bonding portions in the separated state extend in the width direction respectively,

at the portion where the 1 st linear shrinkage member overlaps in the thickness direction, the dimension in the longitudinal direction of the adhesive portion is longer than the dimension in the longitudinal direction of the other adhesive portions in the separated state.

3. The absorbent article as claimed in claim 1 or 2, characterized in that,

in the region where the bonding portions exist, the distances between adjacent bonding portions in a separated state are equal to each other.

4. The absorbent article as claimed in claim 1 or 2, characterized in that,

the absorbent body (8) has an absorbent core (8 c) containing pulp fibers and a core wrap sheet (7) covering the absorbent core (8 c),

the absorbent article further comprises a sheet for covering the absorber (8),

the sheet and the core wrap sheet (7) form an extension portion extending outside in the longitudinal direction of the longitudinal direction end portion of the absorbent core (8 c),

the 1 st linear shrinkage member overlaps the extension portion in the thickness direction.

5. The absorbent article as in claim 4, wherein,

the sheet covers the widthwise side portions of the absorber (8),

and is bonded to the absorber (8) at the side portions.

6. The absorbent article as in claim 4, wherein,

the end of the sheet covering the absorber (8) in the width direction is non-bonded to the outer case.

7. The absorbent article as claimed in claim 1 or 2, characterized in that,

the bonding portion in the separated state is rectangular and extends in the width direction.

8. The absorbent article as claimed in claim 1 or 2, characterized in that,

the absorbent article further comprises a 2 nd linear contraction member which overlaps the absorber (8) in the thickness direction so as to traverse the absorber (8) in the width direction in a pubic region corresponding to the pubic bone of the wearer on the abdomen side of the wearer when the absorbent article is worn, and the adhesive portion is not disposed in the extension region of the 2 nd linear contraction member.

9. The absorbent article as claimed in claim 1 or 2, characterized in that,

at the portion where the 1 st linear shrinkage member overlaps in the thickness direction, the width direction dimension of the adhesive portion is longer than the width direction dimension of the other adhesive portion in the separated state.