CN108883004A - Absorbent commodity - Google Patents

Abstract

The absorbent article (1) has a fold line (FL1) for folding so that the skin-facing surfaces of the absorbent article face each other. The absorbent body has a low unit area weight portion (41) located at the boundary between the central region and the rear region and extending in the width direction. The absorbent article has a first joint portion (61) located in front of the low unit area weight portion and a second joint portion (62) located in rear of the low unit area weight portion. An elastic member (91) crosses the low unit area weight portion or crosses a region extending outward in the width direction from the low unit area weight portion. The fold line is provided in the low unit area weight portion so that the low unit area weight portion bulges towards the wearer side under the contraction of the elastic member in the unfolded state of the absorbent article.

Description

absorbent article

technical field

The present invention relates to absorbent articles such as sanitary napkins.

Background technique

Absorbent articles worn under underwear, such as sanitary napkins, panty liners, and incontinence pads, are known. The non-skin-facing surface of the absorbent article is provided with a joining portion for joining with underwear. The absorbent article described in Patent Document 1 has at least a wing joining portion and a hip flap joining portion. When wearing the absorbent article of Patent Document 1, the wing joints and the hip flap joints are joined to the underwear with the underwear separated from the body, and the absorbent article is lifted up by the underwear.

prior art literature

patent documents

Patent Document 1: Japanese Unexamined Patent Publication No. 2011-72651

Contents of the invention

Generally, underwear is made of elastic materials and stretches so as to fit the wearer's body when worn. On the other hand, the entire absorbent article does not stretch so as to fit the body when worn. Therefore, when the absorbent article is pulled up together with the undergarment, only the undergarment is stretched, and a shearing force is generated at the wing joining portion and the buttock wing joining portion. In particular, since the wearer holds the underwear around the waist and lifts the underwear, a shearing force is generated at the buttock flap joining portion located behind the product, and the buttock wing joining portion may be separated from the underwear. If the joints located in the rear region of the absorbent article, such as the buttock flap joints, are separated from the underwear, the rear end edge of the absorbent article is bent toward the side facing the skin when worn, or the rear region of the absorbent article The position of the body is shifted in the width direction, which may cause discomfort during wearing and leakage of excrement.

Therefore, an object of the present invention is to provide an absorbent article capable of suppressing leakage of excrement while suppressing uncomfortable feeling at the time of wearing.

The absorbent article (absorbent article 1) of the present disclosure includes: a front-rear direction (front-rear direction L) and a width direction (width direction W) perpendicular to each other; a central region (central region S1) disposed on the wearer's crotch a rear region (rear region S3) located behind the central region; an absorber (absorbent body 30) disposed between the central region and the rear region; an elastic member (elastic member 91) , which can expand and contract in the front-rear direction; a joint portion (joint portion 60), which is provided on the non-skin-facing surface of the absorbent article, for joining with underwear; and a folding line (folding line FL1), which is along the width direction, and for folding the skin-facing surfaces of the absorbent article facing each other, the gist of which is that the absorbent body has a boundary between the central region and the rear region and along the The low basis weight part (low basis weight part 41 ) extending in the width direction, the basis weight of the low basis weight part is lower than the center part in the front-rear direction of the central region. , the joint part includes a first joint part (first joint part 61) located in front of the low unit area weight part and a second joint part located in the rear position of the low unit area weight part part (second joint part 62), the elastic member (elastic member 91) straddles the low basis weight part or a region extending outward in the width direction from the low basis weight part, the The fold line is provided in the low basis weight portion so that the low basis weight portion bulges toward the wearer by contraction of the elastic member in the unfolded state in which the absorbent article is unfolded.

Description of drawings

Fig. 1 is a plan view of an absorbent article according to an embodiment.

Fig. 2 is a rear view of the absorbent article shown in Fig. 1 .

Fig. 3 is a cross-sectional view of the absorbent article along line AA of Fig. 1 .

Fig. 4 is a cross-sectional view of the absorbent article along line BB in Fig. 1 .

Fig. 5 is a cross-sectional view of the absorbent article along line CC in Fig. 1 .

Fig. 6 is a schematic perspective view of an absorbent article in an unfolded state in which an individual package is unfolded.

Fig. 7 is a schematic enlarged view of a low basis weight portion in Fig. 5 . 7( a ) is an extended state where the elastic member is stretched, and FIG. 7( b ) is a contracted state where the elastic member is shrunk.

Fig. 8 is a schematic cross-sectional view of the absorbent article in a worn state along line CC in Fig. 1 . (a) of FIG. 8 is a state before the absorbent article 1 in the unfolded state is joined to underwear and the underwear is pulled up. (b) of FIG. 8 is the state after lifting the underwear shown in FIG. 8(a).

Fig. 9 is a plan view of an absorbent article according to a modified example.

Fig. 10 is a rear view of the absorbent article shown in Fig. 9 .

Detailed ways

From the description of this specification and the accompanying drawings, at least the following matters will become clear.

An absorbent article comprising: a front-rear direction and a width direction orthogonal to each other;

a central region disposed on the wearer's crotch;

a posterior region located posterior to said central region;

an absorber disposed in the central region and the rear region;

an elastic member capable of expanding and contracting in the front-rear direction;

an attachment portion provided on the non-skin-facing side of the absorbent article for attachment to an undergarment; and

folding lines extending in the width direction and for folding the absorbent article such that skin-facing surfaces of the absorbent article face each other, wherein,

The absorber has a low basis weight portion provided at a boundary between the central region and the rear region and extending in the width direction,

the basis weight of the low basis weight portion is lower than the basis weight of the central portion of the central region in the front-rear direction,

The joint part includes a first joint part located in front of the low basis weight part and a second joint part located in the rear of the low basis weight part,

The elastic member spans the low basis weight portion or a region extending outward in the width direction from the low basis weight portion,

The fold line is provided on the low basis weight portion so that the low basis weight portion bulges toward the wearer's side by contraction of the elastic member in the unfolded state in which the absorbent article is unfolded. .

The low basis weight part has a basis weight lower than that of the central part in the front-rear direction of the central region, and is prone to deformation. Since the elastic member straddles the low basis weight portion or spans a region extending from the low basis weight portion outward in the width direction, the length of the low basis weight portion in the front-rear direction becomes shorter by contracting the elastic member in the expanded state. The form is deformed, and the low basis weight part is in a contracted state in the front-rear direction.

When wearing, after the absorbent article is fixed to the underwear via the first joint part and the second joint part in a state where the low basis weight part is shrunk, it is lifted together with the underwear. At this time, the contracted region of the low basis weight portion extends along with the elongation of the underwear, and the absorbent article deforms following the deformation of the underwear. Thereby, the 1st joining part and the 2nd joining part are hard to separate from underwear when wearing, and it is easy to maintain the position fixed to the underwear in advance. It is possible to prevent the absorbent article from being accidentally bent or shifted when worn, and to suppress discomfort and leakage of excrement during wearing. In particular, when the wearer holds the underwear around the waist and lifts the underwear up, even if a shearing force occurs at the second joint at the rear of the product, the joint state of the second joint can be maintained, preventing the wearer from wearing the underwear. When the rear end edge of the absorbent article is bent toward the skin-facing side, or the position of the rear region of the absorbent article is shifted in the width direction, discomfort during wearing and leakage of excrement can be suppressed.

In addition, since the fold line is provided on the low basis weight part so that the low basis weight part bulges toward the wearer in the unfolded state, the low basis weight part does not hinder the joint between the underwear and the joint part, and it is possible to maintain The joining position of the absorbent article suppresses discomfort during wearing and leakage of excrement.

The absorbent article desirably,

At least a part of the folding line is provided at a position that does not coincide with the center of the low basis weight portion in the front-rear direction.

In such an absorbent article, since the fold line is a valley fold with respect to the wearer, the adjacent region adjacent to the fold line in the low basis weight portion bulges toward the wearer with the fold line as a base point in the unfolded state. The folding line does not coincide with the center of the low basis weight portion in the front-rear direction, but is provided offset in the front-rear direction with respect to the center of the low basis weight portion in the front-rear direction. With respect to the adjacent region on the side of the front edge of the front end edge of the basis weight part and the rear end edge of the low basis weight part, which is disposed away from the folding line, in the unfolded state of the absorbent article, the raised The length in the front-rear direction is longer, and it is easier to bulge toward the wearer's side. The low basis weight part can maintain the joint position of the absorbent article without hindering the joint between the underwear and the joint part, and further suppress discomfort during wearing and leakage of excrement.

The absorbent article desirably,

The absorbent article has a skin sheet provided on a side facing the skin of the absorber,

The skin panel is not bonded to a member provided on the non-skin facing side of the skin panel in a region overlapping the low basis weight portion.

With such an absorbent article, in the low basis weight portion, the skin sheet is not bonded to the member disposed on the non-skin-facing side of the skin sheet, and therefore the elastic member is placed in the low basis weight portion. When deformed in such a way as to shrink by action, the skin sheet is likely to deform so as to bulge toward the wearer. By deforming the skin panel so as to protrude toward the wearer, when the underwear is pulled up, the skin panel is elongated along with the extension of the underwear, thereby suppressing the shearing force generated at the joining portion.

The absorbent article desirably,

The absorbent article has a non-skin surface sheet provided on a non-skin-facing side of the absorber,

The skin sheet is not bonded to the absorber at a region overlapping the low basis weight portion,

The non-skin sheet is joined to the absorber at a region overlapping the low basis weight portion.

In such an absorbent article, since the skin panel and the absorber are not joined, and the non-skin panel is joined to the absorber, the rigidity of the side of the absorber facing the skin is lower than that of the side of the absorber that is not facing the skin. . Therefore, when the low basis weight part is deformed so as to shrink by the elastic member, the low basis weight part tends to bulge toward the skin facing side. The low basis weight portion shrunk in the front-rear direction does not hinder the bonding between the underwear and the bonding portion, maintains the bonding position of the absorbent article, and further suppresses discomfort during wearing and leakage of excrement.

The absorbent article desirably,

The low basis weight portion is arranged in a region that does not overlap with the joining portion.

According to such an absorbent article, when the low basis weight portion shrinks, it is possible to suppress adhesion between the joining parts, and it is possible to maintain the joint state between the absorbent article and the underwear via the joining parts. The absorbent article can be suppressed from being accidentally bent or misplaced when worn, and discomfort during wearing and leakage of excrement can be further suppressed.

The absorbent article desirably,

The rear end edge of the second joining portion is disposed behind a contracted region contracted in the front-rear direction by the elastic member.

According to such an absorbent article, the second joining portion positioned behind the contracted region is less likely to be contracted by contraction of the elastic member in the expanded state, and the joined state with respect to the underwear can be easily maintained. In addition, when the underwear is lifted up, the constricted region expands according to the deformation of the underwear, so that the bonded state between the second joining portion located behind the constricted region and the underwear is easily maintained. Thereby, the joining position of an absorbent article can be maintained, and the uncomfortable feeling at the time of wearing and leakage of excrement can be further suppressed.

The absorbent article desirably,

The absorbent article has hip flaps bulging outward in the width direction in the rear region,

The joint part includes a third joint part provided on the hip flap,

The third joining portion is disposed behind a contracted region contracted in the front-rear direction by the elastic member.

According to such an absorbent article, the third joining portion located behind the contracted region is less likely to be contracted by contraction of the elastic member in the unfolded state, and the joined state to the underwear can be easily maintained. In addition, when the underwear is lifted up, the constricted region expands according to the deformation of the underwear, and it is easy to maintain the bonded state between the third joining portion located behind the constricted region and the underwear. Folding of the buttock flaps and generation of wrinkles can be suppressed, thereby further suppressing discomfort during wearing and leakage of excrement.

The absorbent article desirably,

The absorbent article has: hip flaps swollen outward in the width direction at the rear side region; and

a wing portion adjacent to the hip flap and swollen outward in the width direction at the central region,

The low basis weight portion is provided at a narrowed portion where the outer edge of the hip flap and the outer edge of the wing portion are narrowed inward in the width direction, or at a narrowed portion extending from the narrowed portion to the narrowed portion. The area extending outside in the width direction.

The central region is sandwiched between the legs of the wearer, and is easily deformed by a force acting from the outside in the width direction toward the inside in the width direction. Since the low basis weight portion is provided in the narrowed portion or in a region extending from the narrowed portion outward in the width direction, transmission of deformation in the central region to the hip flap can be suppressed by the low basis weight portion. Thereby, twisting and wrinkling of the hip flaps can be suppressed, thereby suppressing discomfort during wearing and leakage of excrement.

The absorbent article desirably,

The absorbent article has hip flaps bulging outward in the width direction in the rear region,

The outer edge of the hip flap has a concave portion depressed inward in the width direction,

The concave portion is disposed in a region rearward of the rear edge of the low basis weight portion.

According to such an absorbent article, since the concave portion is arranged in the region rearward from the rear end edge of the low basis weight portion, it is possible to suppress the deformation of the low basis weight portion from being transmitted to the rearward position of the concave portion, and to suppress the deformation of the buttock flaps. Bends and wrinkles are generated as a whole. Thereby, twisting and wrinkling of the hip flaps can be further suppressed, thereby suppressing discomfort during wearing and leakage of excrement.

===About the absorbent article of this embodiment===

Hereinafter, absorbent articles according to embodiments will be described with reference to the drawings. The absorbent article may be any absorbent article such as a panty liner (panty liner), a sanitary napkin, or an incontinence pad. In the following embodiments, a disposable sanitary napkin will be described as an example of an absorbent article.

In addition, in the description of the drawings below, the same or similar reference signs are attached to the same or similar parts. However, the drawings are schematic, and it should be noted that ratios of dimensions and the like may differ from actual structures. Therefore, specific dimensions and the like should be determined in consideration of the following description. In addition, the dimensional relationship and ratio may differ between drawings.

(1) The overall structure of the absorbent article

Fig. 1 is a plan view of an absorbent article according to an embodiment. Fig. 2 is a rear view of the absorbent article shown in Fig. 1 . Fig. 3 is a cross-sectional view of the absorbent article along line AA of Fig. 1 . Fig. 4 is a cross-sectional view of the absorbent article along line BB in Fig. 1 . Fig. 5 is a cross-sectional view of the absorbent article along line CC in Fig. 1 .

The absorbent article 1 has a front-back direction L, a width direction W, and a thickness direction T. As shown in FIG. The front-back direction L is a direction extending from the wearer's front side (abdominal side) to the rear side (back side), or a direction extending from the wearer's back side to the front side. The width direction W is a direction perpendicular to the front-back direction L. As shown in FIG. The thickness direction T is a direction extending from the wearer's skin-facing surface side T1 to the non-skin-facing surface side T2, and is a direction perpendicular to the front-back direction L and the width direction W. The skin facing side T1 corresponds to the side facing the wearer's skin during use. The non-skin facing side T2 corresponds to the side opposite to the skin facing side T1 during use, that is, the side facing the position opposite to the wearer's skin.

The absorbent article 1 has a central region S1, a front region S2, and a rear region S3. The central area S1 is an area facing the wearer's excretion opening (for example, vaginal opening). When the absorbent article 1 is worn in underwear, the central region S1 is located in the crotch of the underwear. That is, the central region S1 is a region arranged between the crotch of the wearer, that is, between the legs of the wearer.

The front area S2 is located on the front side of the central area S1. The front end edge of the front region S2 defines the front end edge of the absorbent article 1 . The rear region S3 is located on the rear side of the central region S1. The rear edge of the rear region S3 defines the rear edge of the absorbent article 1 . The length in the front-rear direction L of the rear side region S3 is longer than the length in the front-rear direction L of the central region S1.

In the center area S1, the wing part 3 which bulges outward in the width direction is provided. Moreover, the rear side area|region S3 is provided with the buttock flap 4 which swells outward in the width direction W. As shown in FIG. The wing portion 3 and the hip flap 4 are adjacent to each other in the front-rear direction. The wing portion 3 and the hip flap 4 protrude to a position on the outer side in the width direction W than the outer edge of the absorbent core 31 in the central region S1.

The root of the wing forms a constricted portion in which the outer edge of the wing is narrowed inward in the width direction. The constricted portion is two portions where the outer edge of the wing portion is recessed inwardly in the width direction W to the greatest extent, and is provided at the front end edge of the wing portion and the rear end edge of the wing portion. The front end edge of the wing portion 3 defines the boundary between the central area S1 and the front area S2. The rear edge of the wing portion 3 defines the boundary between the central area S1 and the rear area S3. The front end edge of the hip flap coincides with the rear edge of the wing, forming a narrowed portion in which the outer edge of the hip flap and the outer edge of the wing narrow toward the inside in the width direction. In addition, the outer edge 4E of the hip flap 4 has a wave shape having a plurality of recesses 4C recessed inward in the width direction.

The absorbent article 1 has a skin sheet 10 , a non-skin sheet 20 , and an absorber 30 . The skin sheet 10 is provided at a position closer to the skin-facing side T1 than the absorber 30 . The skin sheet 10 has a front sheet 11 and a side sheet 12 . The non-skin surface sheet 20 is provided at a position closer to the non-skin facing surface side T2 than the absorber 30 . The absorber 30 is provided between the skin sheet 10 and the non-skin sheet 20 . The side sheet 12 covers the outer edge in the width direction W of the top sheet 11, and extends to the outer side in the width direction W rather than the top sheet 11. As shown in FIG. The side sheet 12 is arranged on the outer edge in the width direction W of the absorber 30 , the wing portion 3 and the hip flap 4 .

The absorber 30 is arranged at least in the central region S1 and the rear region S3. In addition, the absorber 30 may extend from the central area|region S1 to the front side area|region S2. The absorbent body 30 has an absorbent core 31 containing an absorbent material for absorbing liquid, and a core cover 32 that wraps around the absorbent core 31 . The core cover 32 may cover the absorbent core 31 at least at a position on the skin-facing side of the absorbent core 31 .

As shown in FIG. 2 , in order to join the absorbent article to the underwear S, a joining portion 60 is provided on the non-skin facing surface of the non-skin top sheet 20 . The bonding portion 60 has an adhesive. The joint part 60 includes a first joint part 61 located in front of the low basis weight part 41 described later, a second joint part 62 located in the rear of the low basis weight part 41, and a buttock support. The third joint portion 63 of the wing and the fourth joint portion 64 provided on the wing. The 1st joining part 61 and the 2nd joining part 62 are provided in the area|region which overlaps with the absorber 30. As shown in FIG. The first joint part 61 and the second joint part 62 are separated in the front-rear direction. The junction part 60 will be described in detail later.

In addition, the measurement of "the basis weight of an absorber" in this specification was performed by the following measurement method.

When the absorbent article 1 is enclosed in a packaging bag or the like, a sample taken out of the packaging bag and left in an atmosphere of 20° C.±2° C. and a relative humidity of 60%±5% RH for 12 hours is used. For the absorbent article packaged by the package body, the package body was unsealed, the folded absorbent article was unfolded and the thickness and area of the portion for measuring the weight per unit area and the density were measured. Next, a portion for measuring the weight per unit area and density was cut out from the absorbent article, and the weight of the cut-out portion was measured. Next, parts other than the absorber, such as the top sheet and the back sheet, were removed from the cut-out portion, and the weight of the absorber was measured. The basis weight is calculated based on the weight of the absorbent body and the area of the portion used to measure the basis weight and density.

The measurement of the "thickness of the absorbent body" in this specification was performed by the following measurement method. When the absorbent article 1 is enclosed in a packaging bag or the like, a sample taken out of the packaging bag and left in an atmosphere of 20° C.±2° C. and a relative humidity of 60%±5% RH for 12 hours is used. At the time of measurement, the measurement is performed in a state in which the elastic member of the absorbent article is expanded, not in a contracted state of the absorbent article. Then, parts other than the absorber, such as the skin sheet and the non-skin sheet, were removed. The thickness of the test piece was measured by preparing a test piece having a size of 30 mm×30 mm using a dial gauge PEACOCK manufactured by Ozaki Seisakusho Co., Ltd., using a measuring head with a diameter of 10 mm. Adjust the measurement pressure applied by the measuring device to the test piece to 3 g/cm ² . Here, the above-mentioned measurement was performed about 10 samples in each state, and this average value was made into thickness.

In addition, the measurement of the "length" in this specification was performed by the following measurement method. When the absorbent article 1 is enclosed in a packaging bag or the like, a sample taken out of the packaging bag and left in an atmosphere of 20° C.±2° C. and a relative humidity of 60%±5% RH for 12 hours is used. Next, using a spring measuring tape manufactured by Nippon Affinity Measurement Co., Ltd. (tape part: glass fiber as a base material, vinyl chloride as a covering layer), the measurement target site in this state is measured along the measurement target site. length. Here, the above-mentioned measurement was performed in each state about 10 samples, and the average value was made into length.

(2) Detailed structure of the absorber

The absorber 30 has a low basis weight portion 41 . The basis weight of the absorbent material of the low basis weight part 41 is lower than the basis weight of the absorbent material of the central part in the front-back direction of a central region. "Low basis weight part" refers to a region formed by the absorbent core 31 having a lower basis weight than the absorbent core 31 located at the center in the front-back direction of the central region, or a region without the absorbent core 31. area. Thus, the "low basis weight part" is a concept including the area|region where the basis weight of the absorbent core 31 is zero. Even when the "low basis weight part 41" is a region which does not have the absorbent core 31, the core cover 32 can straddle the low basis weight part 41 and wrap the whole absorbent core 31. In this case, even if the absorbent core 31 is divided into a plurality of regions, the absorbent body 30 can be integrally formed by the core cover 32 .

The low basis weight portion 41 serves as a boundary where the rigidity of the absorber 30 changes. Therefore, the low basis weight portion 41 corresponds to a region where the absorber 30 is likely to deform. The low basis weight part 41 extends in the width direction W, and is formed so that the absorbent article 1 can bend in the thickness direction T. As shown in FIG. The low basis weight portion 41 extends in the width direction W from one end to the other end of the absorber 30 .

In the present embodiment, the low basis weight portion 41 has a curved shape in which the center of the low basis weight portion 41 in the width direction W protrudes rearward. More specifically, the center of the low basis weight portion 41 in the width direction W is positioned behind the outer edge of the low basis weight portion 41 . The length in the front-rear direction L of the low basis weight portion 41 may or may not be fixed. The position in the front-rear direction of the low basis weight portion 41 of this embodiment changes in the width direction, and the position in the front-rear direction of the line formed by connecting the centers 41CL in the front-rear direction of the low basis weight portion 41 also changes. It changes in the width direction, and has a curved shape in which the center in the width direction W protrudes backward. The front end edge 41F of the low basis weight portion 41 is the front end edge of the entire low basis weight portion, and is the front end edge of the low basis weight portion at the outer edge 41E of the low basis weight portion 41 . The rear end edge 41R of the low basis weight portion 41 is the rear end edge of the entire low basis weight portion, and is the rear end of the low basis weight portion 41 at the center in the width direction W of the low basis weight portion 41 edge.

The low basis weight part 41 is provided in the rear side of the center in the front-back direction L of the center area|region S1 (wing part 3), and is provided in the front side of the rear side edge of the absorber 30. As shown in FIG. At least a part of the low basis weight portion 41 is provided on the boundary between the central region S1 and the rear region S3. The low basis weight portion 41 may be provided in at least a part of the boundary between the central region S1 and the rear region S3, and may not be provided in the entire boundary region. At least a part of the low unit area weight portion 41 is provided on the outer edge of the buttocks flap 4 and the narrowed portion 5 formed by narrowing the outer edge of the wing portion inward in the width direction, that is, the rear end edge of the wing portion 3 (buttocks flap). The front end edge of the wing 4), or the region extending outward in the width direction from the narrowed portion 5. The central region S1 is sandwiched between the legs of the wearer, and is easily deformed by a force acting from the outside in the width direction W toward the inside in the width direction. Since the low basis weight portion 41 is provided in the narrowed portion 5 or a region extending from the narrowed portion 5 to the outside in the width direction, the deformation of the central region S1 can be absorbed by the low basis weight portion 41, and the deformation can be suppressed to the outside. Hip wings 4 pass. Thereby, twisting of the buttocks flap 4 and generation of wrinkles can be suppressed, and discomfort during wearing and leakage of excrement can be suppressed.

At least some of the recessed portions 4C of the plurality of recessed portions 4C of the hip flap 4 are arranged in a region rearward of the rear end edge 41R of the low basis weight portion 41 . Since the recessed portion 4C is arranged in a region rearward of the rear end edge 41R of the low basis weight portion 41, the deformation of the low basis weight portion 41 can be blocked by the recessed portion 4C, and transmission of the deformation to a position rearward of the recessed portion 4C can be suppressed. , to suppress the occurrence of bends and wrinkles in the entire buttocks flap 4 . Thereby, twisting of the buttocks flap 4 and generation of wrinkles can be suppressed, and discomfort during wearing and leakage of excrement can be suppressed.

(3) Folding of absorbent article

The absorbent article 1 is folded on the basis of the folding line FL1 before use. Fold line FL1 is a line for folding so that the skin-facing surfaces of absorbent article 1 face each other, and fold line FL1 is formed in this folded state. The fold line FL1 forms a customary bend called a valley fold with respect to the wearer.

Fig. 6 is a schematic perspective view of the absorbent article 1 in an unfolded state in which the absorbent article 1 folded based on the folding line is unfolded. In the absorbent article shown in FIG. 6 , the low basis weight portion 41 and the region overlapping with the low basis weight portion 41 bulge toward the wearer by contraction of the elastic member 91 forming the cuff. FIG. 7 is a schematic enlarged view of the low basis weight portion 41 shown in FIG. 5 . 7( a ) is an extended state in which the absorbent article is expanded and the elastic member 91 is extended, and FIG. 7( b ) is a contracted state in which the absorbent article is expanded and the elastic member 91 is contracted.

Fold line FL1 is provided so that the low basis weight part 41 may bulge toward a wearer's side by contraction of the elastic member 91 in the expanded state which expanded the absorbent article. Since the fold line is provided on the low basis weight portion 41 in such a way that the low basis weight portion 41 bulges toward the wearer in the unfolded state, the joint portions 60 such as the first joint portion 61 and the second joint portion 62 When joined to underwear, the low basis weight portion 41 is not easily disposed between the underwear S and the joining portion 60 . Thus, the low basis weight portion 41 does not hinder the joining of the underwear S and the joint portion 60, and it is possible to prevent the joint portion 60 from being joined at an undesired position or to bend the joint portion 60. The achieved engagement state. Thereby, the joining position of the absorbent article 1 can be maintained, and the uncomfortable feeling at the time of wearing and the leakage of excrement can be suppressed.

The folding line FL1 extends in the width direction W. As shown in FIG. Fold line FL1 is provided over the low basis weight part and the absorbent core adjacent to the low basis weight part. The folding line FL1 is separated in the front-back direction from the center 41CL in the front-back direction of the low basis weight portion 41 . At least a part of the fold line FL1 is provided at a position that does not coincide with the center 41CL in the front-rear direction of the low basis weight portion 41 . At least a part of the fold line FL1 may be provided separately from the center 41CL in the front-rear direction of the low basis weight portion 41 , or partially overlap the center 41CL in the front-rear direction. In the low basis weight portion 41 , a fold line FL1 and an adjacent region adjacent to the fold line in the front-rear direction L are formed. As for the adjacent area, the front side adjacent area 411 between the fold line FL1 and the absorbent core 31 located on the front side of the low basis weight portion 41 and the fold line FL1 and the absorbent core 31 located on the lower basis weight portion 41 are provided. The rear side adjacent region 412 between the absorbent cores 31 at the position closer to the rear side of the portion 41 .

Since the fold line FL1 is a valley fold with respect to the wearer, the adjacent region adjacent to the fold line FL1 bulges toward the wearer with the fold line FL1 as a base point in the state shown in FIG. 6 and FIG. 7( b ). At least a part of the folding line FL1 does not coincide with the center 41CL of the low basis weight portion 41 in the front-rear direction, but is shifted in the front-rear direction relative to the center of the low basis weight portion 41 in the front-rear direction. The length in the front-rear direction L of one of the adjacent regions (rear-side adjacent region 412 in this embodiment) The length in the front-rear direction L is longer than the other (the front-side adjacent region 411 in this embodiment). One of the adjacent regions has a longer length in the front-back direction of the bulge than the other adjacent region, and is more likely to bulge toward the wearer in the expanded state of the absorbent article.

(4) Wearing form of absorbent article

Next, how the absorbent article formed in this way is worn on the underwear S will be described. When wearing the absorbent article in underwear, the wearer first unfolds the folded absorbent article 1 in the folded state. As shown in FIG. 6 , in the expanded state, the low basis weight portion 41 is in a contracted state in the front-rear direction L by contraction of the elastic member 91 . Next, the wearer joins the joining portion of the absorbent article in the unfolded state to the underwear. At this time, the underwear S is in a state separated from the body, specifically, it is arranged below the crotch of the wearer. Fig. 8 is a schematic cross-sectional view of the absorbent article in a worn state along line C-C in Fig. 1 . (a) of FIG. 8 is a state before the absorbent article 1 in the unfolded state is joined to underwear and the underwear is pulled up. In the forward state, the absorbent article 1 is joined to the underwear via the first joining part 61 and the second joining part 62, and the low basis weight part 41 between the first joining part 61 and the second joining part 62 is aligned in the front-rear direction. L shrinks. Next, the wearer lifts up the absorbent article shown in FIG. 8( a ), and arranges the underwear S and the absorbent article 1 around the wearer's waist. (b) of Fig. 8 is the state after the underwear is lifted up.

When the underwear S and the absorbent article 1 are arranged around the wearer's waist, the underwear S is stretched so as to fit the wearer's body. At this time, the contracted region of the low basis weight portion 41 expands with the extension of the underwear S, and the absorbent article 1 deforms according to the deformation of the underwear. The distance in the front-rear direction L between the first junction part 61 and the second junction part 62 in the worn state is longer than the distance between the first junction part 61 and the second junction part 62 in the pre-wear state. The first joining part 61 and the second joining part 62 are not easily separated from the underwear when worn, and are easy to maintain the position fixed on the underwear in advance. Unintentional bending or misalignment of the absorbent article 1 during wearing can be suppressed, and discomfort during wearing and leakage of excrement can be suppressed.

(5) leak-proof cuff

The absorbent article 1 has a pair of leak-proof cuffs. Leak-proof cuffs are standing pleats that can stand up to the wearer's side. The cuff includes side panels 12 and elastic members 91 . The inner edge 12E of the side sheet 12 is folded back toward the outside in the width direction W along the front-back direction L. As shown in FIG. An elastic member 91 capable of expanding and contracting in the front-rear direction L is disposed between the folded side panels 12 . The inner edge 12E of the side sheet 12 is not joined to the top sheet 11 . The inner edge 12E of the side panel 12 and the elastic member 91 form a standing leak-proof cuff. The absorbent article has a contraction area that can be contracted in the front-rear direction by the elastic member 91 . The contraction region is a region formed by arranging the elastic member 91 in an extended state, and is a region to which a force of contraction in the front-rear direction is applied by the elastic member. The contracted region is a concept other than the region formed by arranging the elastic member in a non-extended state. With respect to the elastic member 91 in FIG. 1 , only the contracted region is shown, and the region formed by arranging the elastic member in a non-extended state is not shown. Therefore, the range of the elastic member 91 of FIG. 1 coincides with the range of the constricted region. The constricted area is arranged across the central area S1 in the front-rear direction L. As shown in FIG.

The elastic member 91 forming the cuff is arranged across the low basis weight portion 41 in the front-rear direction L or across a region extending outward in the width direction from the low basis weight portion 41 . More specifically, the front end edge 91F of the elastic member 91 is positioned forward of the front end edge 41F of the low basis weight portion 41 , and the rear end edge 91R of the elastic member 91 is positioned ahead of the rear end edge of the low basis weight portion 41 . 41R is located at the rear. The region extending outward in the width direction from the low basis weight portion 41 refers to the region extending in the width direction from the region between the front end edge 41F of the low basis weight portion 41 and the rear end edge 41R of the low basis weight portion 41 . area. The low basis weight portion 41 has a basis weight lower than that of the center in the front-rear direction of the central region, and is prone to deformation. In addition, the basis weight of the low basis weight part 41 is different from the basis weight of the absorbent core 31 in the central region S1 (or rear region S3) adjacent to the low basis weight part 41, and is a boundary where rigidity changes. Thereby, deformation|transformation becomes easy based on the boundary between the low basis weight part 41 and the absorbent core adjacent to the low basis weight part 41. As shown in FIG. In addition, the elastic member 91 spans the low basis weight portion 41 or spans a region extending from the low basis weight portion 41 outward in the width direction. With such a configuration, the low basis weight portion 41 is deformed so that the length in the front-rear direction becomes shorter as the elastic member 91 contracts, and the low basis weight portion 41 is in a contracted state in the front-rear direction. Accordingly, as the underwear S stretches when worn, the contracted region of the low basis weight portion 41 expands, and the absorbent article 1 can deform following the deformation of the underwear. When wearing, the first joint part 61 and the second joint part 62 are not easily separated from the underwear, and are easy to maintain the position fixed on the underwear in advance. Unintentional bending or misalignment of the absorbent article 1 during wearing can be suppressed, and discomfort during wearing and leakage of excrement can be suppressed.

(6) The non-joint area between the skin panel and the absorber and the non-joint area between the skin panel and the absorber

The skin sheet 10 is not bonded to a member provided on the non-skin-facing side of the skin sheet 10 in a region overlapping the low basis weight portion 41 . The members provided on the non-skin-facing side of the skin sheet 10 can be exemplified by an absorber and a second sheet. More specifically, in the non-joining region 46 shown in FIG. 1 , the skin sheet 10 and the core cover 32 forming the absorber 30 are not joined. The non-joint region 46 is shown in FIG. 1 by a region surrounded by a dashed line. The non-joint region 46 may extend at least from one end to the other end in the width direction W of the low basis weight portion 41 . Instead of this, the non-joint region 46 may not extend to both ends of the low basis weight portion 41 in the width direction W. At the low unit weight portion 41, the skin sheet is not joined to the member provided on the non-skin facing side of the skin sheet, so the low unit weight portion 41 contracts under the action of the elastic member. When deformed in such a manner, the skin panel tends to deform so as to bulge toward the wearer's side.

The non-skin top sheet 20 is joined to a member provided on the skin-facing side of the non-skin top sheet 20 in a region overlapping the low basis weight portion 41 . More specifically, the non-skin topsheet 20 and the core wrap forming the absorbent body are bonded together. The skin face sheet 10 and the absorber 30 are not bonded, and the non-skin face sheet 20 and the absorber 30 are bonded together, so the rigidity of the skin-facing side is lower than that of the non-skin-facing side of the absorbent article. When the basis weight part 41 is deformed so as to shrink by the elastic member, the low basis weight part 41 tends to bulge toward the skin facing side. The low basis weight portion 41 can maintain the joined position of the absorbent article without hindering the joint between the underwear and the joint portion, and can further suppress discomfort during wearing and leakage of excrement.

(7) Joint

The first joining portion 61 is arranged in front of the second joining portion 62 and in front of the low basis weight portion 41 . The second joint portion 62 is arranged apart from the first joint portion 61 in the front-rear direction L. As shown in FIG. The second joining portion 62 is disposed rearward of the low basis weight portion 41 . The first joint part 61 and the second joint part 62 are disposed with the low basis weight part 41 interposed therebetween. Therefore, when changing from the advanced state to the rearward state, even if the first joint part is stretched along with the extension of the underwear, When the distance between the portion 61 and the second bonding portion 62 becomes longer, the low basis weight portion 41 is also stretched, and the bonding between the first bonding portion 61 and the second bonding portion 62 can be maintained. It is possible to prevent the second joining portion located in the rear region S3 from being separated from the underwear, and it is possible to suppress the rear end edge of the absorbent article from being bent toward the skin-facing surface side during wearing, or the position of the rear region of the absorbent article in the width direction Bad case of offset. Thereby, discomfort during wearing and leakage of excrement can be suppressed.

The low basis weight portion 41 is arranged in a region that does not overlap with the joining portion 60 . With such a structure, when the low basis weight portion 41 shrinks by the shrinkage of the elastic member 91 , it is possible to suppress the joining portions 60 from sticking to each other. It is possible to prevent the joining part 60 from being joined to a site that is not positioned, and to maintain the joined state between the absorbent article 1 and the underwear S via the joining part 60 . The absorbent article can be suppressed from being accidentally bent or misplaced when worn, and discomfort during wearing and leakage of excrement can be further suppressed.

At least a part of the region extending from the low basis weight portion 41 in the width direction is disposed between the third bonding portion 63 and the fourth bonding portion 64 . Therefore, even if it is pulled so that the distance between the third joint portion 63 and the fourth joint portion 64 becomes longer with the extension of the underwear, the low basis weight portion 41 will be stretched and the third joint portion 64 can be maintained. 3. Joining of the joining portion 63 and the 4th joining portion 64. It is possible to suppress the separation of the third junction portion 63 located in the rear region of the absorbent article from the underwear, and to prevent the hip flaps 4 from being bent toward the skin-facing side during wearing, or the position of the hip flaps 4 shifting in the width direction. bad situation. Thereby, discomfort during wearing and leakage of excrement can be suppressed.

The rear end edge of the second joining portion 62 is disposed behind a contracted region contracted in the front-rear direction by the elastic member 91 . The second joining portion 62 located behind the contracted area is less likely to be shrunk by the contraction of the elastic member 91 in the expanded state, and is easy to maintain the joined state with respect to the underwear. In addition, when the underwear is lifted, the constricted region expands along with the deformation of the underwear, and the bonded state between the second joining portion 62 located behind the constricted region and the underwear is easily maintained. Thereby, the joining position of an absorbent article can be maintained, and the uncomfortable feeling at the time of wearing and leakage of excrement can be further suppressed.

The front end edge 63F of the third joining portion 63 and the rear end edge 63R of the third joining portion 63 are disposed behind a contracted region contracted in the front-rear direction by the elastic member. The third joining portion located at the rear of the contracted area is less likely to be shrunk by the contraction of the elastic member in the expanded state, and it is easier to maintain the joined state with respect to the underwear. In addition, since the constricted region and the third joining portion are separated in the front-rear direction, when the constricted region expands due to deformation of the underwear, it is easy to maintain the joined state between the third joining portion and the underwear. Folding of the buttock flaps and generation of wrinkles can be suppressed, thereby further suppressing discomfort during wearing and leakage of excrement.

The 4th joining part 64 is separated from the low basis weight part 41, and is arrange|positioned ahead rather than the front-end|tip edge 41F of the low basis weight part 41. As shown in FIG. The fourth joining portion 64 is joined to the crotch of the underwear in a worn state. The crotch part of the underwear is formed of double-layer cloth, etc., and has a higher rigidity than the area of the underwear that is in contact with the buttocks, and is less likely to stretch. In addition, for the crotch of the underwear, the first joining portion 61 and the fourth joining portion 64 of the absorbent article 1 are joined thereto, sandwich the absorbent article 1 in the thickness direction T, and contact the buttocks of the underwear. Compared with the area, it is not easy to elongate. That is, the region joined by the fourth joining portion 64 is a region that is difficult to elongate. On the other hand, the region of the underwear that contacts the buttocks is a region that is more likely to stretch than the crotch of the underwear. The low unit weight portion 41 is disposed at a rear position than the fourth joint portion 64, so the low unit weight portion 41 tends to elongate in the front-rear direction along with the extension of the area of the underwear that abuts on the buttocks, thereby improving the absorbency. Items are more likely to deform following the deformation of the underwear.

(8) Compression part

The absorbent article 1 has a compressed portion formed by compressing at least the absorbent core 31 in the thickness direction. The compression section includes a front compression section 81 and a rear compression section 82 . The front side compression part 81 and the rear side compression part 82 are separated in the front-rear direction. At least a portion of the front compression portion 81 and at least a portion of the rear compression portion 82 are provided within a range in the front-rear direction of the contracted region of the elastic member 91 . The front compression portion 81 is arranged so as not to straddle the lower basis weight portion 41 in the front-rear direction. In addition, the rear side compression part 82 is not provided in the low basis weight part 41 . With such a structure, the region on the front side of the low basis weight portion 41 has a higher rigidity due to the action of the front side compression portion, and is less likely to be deformed by the contraction force of the elastic member, and it is easy to maintain the absorber in a flat state. status. Similarly, the region on the rear side of the low basis weight portion 41 has a higher rigidity due to the effect of the rear side compression portion, and is less likely to be deformed by the contraction force of the elastic member, and it is easy to maintain the absorber in a flat state. . Since it is easy to maintain the absorber in a flat state, it can contact the wearer's skin with a smooth surface, and suppress discomfort during wearing. On the other hand, since no compressed portion is formed in the entire region in the front-rear direction of the low basis weight portion 41, it is easy to deform the low basis weight portion 41 so as to contract under the contraction of the elastic member. It can be deformed in such a way that it elongates as the underwear stretches. Even if the contraction force of the elastic member is high, and the contraction amount of the low basis weight portion 41 is large, the deformation of the absorber can be suppressed and a good usability can be maintained. The tracking performance of the absorbent article to underwear can be improved.

(9) Modification

Next, an embodiment of a modified example will be described based on FIGS. 9 and 10 . In addition, in the description of the embodiment of the modified example, the same reference numerals are used for the same structures as those of the above-mentioned embodiment, and description thereof will be omitted. Fig. 9 is a plan view of an absorbent article according to a modification, and Fig. 10 is a rear view of the absorbent article according to the modification. The absorbent article 1A of the modified example is provided with a plurality of low basis weight portions 41 . The plurality of low basis weight portions 41 are arranged at intervals in the front-rear direction. In a structure having a plurality of low basis weight portions 41, the fold line FL1 may be provided in at least a part of the low basis weight portions. In the absorbent article 1A of the modified example, the fold line FL1 is provided at the frontmost low basis weight portion 41. There is fold line FL1.

The second joining portion 62 provided in the rear region S3 is divided in the front-rear direction L. As shown in FIG. Each second joining portion 62 is arranged in a region that does not overlap with the low basis weight portion 41 . The plurality of low basis weight portions 41 are provided in the range of the shrinkage region of the elastic member 91 , and are contracted by the shrinkage of the elastic member 91 . Since a plurality of low basis weight portions 41 are provided within the range of contraction of the elastic member 91, the amount of contraction (length in the front-rear direction) of the low basis weight portions 41 increases, and the conformability to underwear can be improved. . In addition, since a plurality of low-basis-weight portions 41 are provided, portions contracted by the low-basis-weight portions 41 can be provided at multiple locations, and the absorbent article can follow corresponding to multiple locations of the underwear. It is more difficult to peel off from underwear.

As mentioned above, although this invention was demonstrated in detail using the said embodiment, it is clear for those skilled in the art that this invention is not limited to embodiment demonstrated in this specification. The present invention can be implemented as modifications and changes without departing from the gist and scope of the present invention defined by the claims. Therefore, the description in this specification is for the purpose of illustration and description, and does not have any restrictive meaning to the present invention.

In addition, the entire content of Japanese Patent Application No. 2016-67995 for which it applied on March 30, 2016 is incorporated in this specification by reference.

Industrial availability

It is possible to provide an absorbent article that suppresses the uncomfortable feeling when worn and suppresses the leakage of excrement.

Explanation of reference signs

1 Absorbent article; 10 Skin panel; 11 Front panel; 12 Side panel; 20 Non-skin panel; 30 Absorbent body; 31 Absorbent core; ; 62 2nd junction; 63 3rd junction; 64 4th junction; 81 front compression; 82 rear compression; FL1 folding line; L front-back direction; W width direction; T thickness direction; S1 central area ; S2 anterior region; S3 posterior region.

Claims (9)

1. a kind of absorbent commodity comprising：

Orthogonal front-rear direction and width direction；

Middle section is configured at the in-leg of wearer；

Posterior region is located at the rear side of the middle section；

Absorber is configured at the middle section and the posterior region；

Elastic component, can be flexible along the front-rear direction；

Joint portion is set to the non-skin opposite face of absorbent commodity, for engaging with underwear；And

Fold line extends along the width direction, and for making the absorbent commodity with the flesh of the absorbent commodity Skin opposite face mode relative to each other is folded, wherein

The absorber has the boundary set on the middle section and the posterior region and prolongs along the width direction The low weight per unit area portion stretched,

The weight per unit area in the low weight per unit area portion is than the central part on the front-rear direction of the middle section Weight per unit area it is low,

The joint portion includes positioned at the 1st joint portion of the position than the low weight per unit area portion on the front and positioned at than institute The 2nd joint portion of the position of low weight per unit area portion rearward is stated,

The elastic component is across the low weight per unit area portion or across from the low weight per unit area portion to described The region that outside in width direction extends,

The fold line is set to the low weight per unit area portion, so that the low weight per unit area portion is in the absorbability object It is swelled under the action of the contraction of the elastic component to wearer side under the unfolded state that product expand.

2. absorbent commodity according to claim 1, wherein

At least part of the fold line be set to not with the center on the front-rear direction in the low weight per unit area portion Consistent position.

3. absorbent commodity according to claim 1 or 2, wherein

The absorbent commodity has the skin dough sheet being set to than the absorber by skin with respect to the position of surface side,

The skin dough sheet is at the region Chong Die with the low weight per unit area portion not and set on than the skin dough sheet Component by non-skin with respect to the position of surface side engages.

4. absorbent commodity according to claim 3, wherein

The absorbent commodity has the non-skin dough sheet being set to than the absorber by non-skin with respect to the position of surface side,

The skin dough sheet is not engaged with the absorber at the region Chong Die with the low weight per unit area portion,

The non-skin dough sheet engages at the region Chong Die with the low weight per unit area portion with the absorber.

5. absorbent commodity according to any one of claims 1 to 4, wherein

The low weight per unit area portion is configured at region not Chong Die with the joint portion.

6. absorbent commodity according to any one of claims 1 to 5, wherein

The end edge at the 2nd joint portion is configured at the receipts than shrinking under the action of the elastic component along the front-rear direction The position of contracting region rearward.

7. absorbent commodity described according to claim 1~any one of 6, wherein

The absorbent commodity has the buttocks flap of the outside bulging in the width direction in the posterior region,

The joint portion includes the 3rd joint portion for being set to the buttocks flap,

3rd joint portion is configured at than leaning under the action of the elastic component along the constriction zone that the front-rear direction is shunk The position at rear.

8. absorbent commodity according to any one of claims 1 to 7, wherein

The absorbent commodity has：Buttocks flap bloats in outside of the posterior region in the width direction；And

Alar part, it is adjacent with the buttocks flap, and bloated in outside of the middle section in the width direction,

The low weight per unit area portion is set to the outer rim of the buttocks flap and the outer rim of the alar part in width direction Narrowing portion made of the constriction of inside or set on the region extended from outside of the narrowing portion in the width direction.

9. absorbent commodity described according to claim 1~any one of 8, wherein

The absorbent commodity has the buttocks flap of the outside bulging in the width direction in the posterior region,

The outer rim of the buttocks flap has the recess portion of the inside recess in the width direction,

The recess portion is configured in the region of the end edge than the low weight per unit area portion rearward.