JP2021194231A - Absorbent article - Google Patents

Abstract

To provide an absorbent article which can appropriately transport an absorbent core while suppressing a reduction in wear feeling because of the rigidity of the absorbent core.SOLUTION: An absorbent article includes a longitudinal direction and a width direction which are perpendicular to each other, an absorbent core (30) having an absorbent material, and a core compression region where a core compression part (85) obtained by compressing at least the absorbent core in a thickness direction is provided. The core compression region has a first compression region (31) arranged in an end part on one side of the absorbent core in the longitudinal direction and a second compression region (32) arranged in an end part on the other side of the absorbent core in the longitudinal direction. Between the first compression region and the second compression region, a non-compression region (35) where the core compression part is not provided is provided. A shape of an inner end side (31S) of the first compression region in the longitudinal direction is different from a shape of an inner end side (32S) of the second compression region in the longitudinal direction.SELECTED DRAWING: Figure 2

Description

The present invention relates to an absorbent article in which a core pressing portion is provided in an absorbent core.

Patent Document 1 discloses an absorbent article in which a core pressing portion is provided in an absorbent core. The core squeezed portions of Patent Document 1 are punctate or linear, and are arranged at intervals in the longitudinal direction and the width direction. The core pressing portion is arranged over substantially the entire area of the absorption core (FIGS. 1 and 6 of Patent Document 1).

Japanese Unexamined Patent Publication No. 2014-68745

According to the absorbent article of Patent Document 1, the rigidity of the absorbing core can be increased over substantially the entire area of the absorbing core. However, since the rigidity of substantially the entire area of the absorption core is high, the wearer may feel the absorption core hard, which may lead to a decrease in the wearing feeling. Therefore, it is conceivable to narrow the range in which the core pressing portion is provided. However, if the range in which the core pressing portion is provided is narrowed, there is a possibility that a defect may occur during manufacturing. More specifically, during the manufacture of the absorbent article, the absorbent core is generally transported along the longitudinal direction and the absorbent article is continuously transported. Since the absorption core is transported at high speed, by narrowing the range in which the core pressing portion is provided, the rigidity of the absorption core is reduced, and the absorption core is turned over or twisted during transportation, resulting in the absorption core. There was a risk that it could not be transported properly.

The present invention has been made in view of the above-mentioned problems, and provides an absorbent article capable of appropriately transporting an absorbent core while suppressing a decrease in wearing feeling due to the rigidity of the absorbent core.

The absorbent article according to one embodiment has a longitudinal direction and a width direction orthogonal to each other, an absorption core having an absorbing material, and a core pressing region provided with a core pressing portion obtained by compressing at least the absorbing core in the thickness direction. Have. The core squeezing region includes a first squeezing region arranged at one end of the absorption core in the longitudinal direction and a second squeezing region arranged at the other end of the absorption core in the longitudinal direction. , Have. Between the first squeezed region and the second squeezed region, a non-squeezed region in which the core squeezed portion is not provided is provided. The shape of the inner end side in the longitudinal direction of the first squeezed region is different from the shape of the inner end side in the longitudinal direction of the second squeezed region.

The absorbent article according to the other aspect has a longitudinal direction and a width direction orthogonal to each other, an absorption core having an absorbing material, and a core pressing portion obtained by compressing the absorbing core in a thickness direction at least. The absorbable article includes a core squeezing region in which the core squeezing portion is provided at the longitudinal end of the absorbing core, and a non-core squeezing region in which the core squeezing portion is not provided inside the core squeezing region in the longitudinal direction. It has a squeezed area. The basis weight of the absorbent material in the core compressed region is higher than the basis weight of the absorbent material in the non-compressed region adjacent to the core compressed region.

FIG. 1 is a plan view of the absorbent article according to the embodiment as viewed from the skin surface side. FIG. 2 is a plan view of the absorption core according to the embodiment as viewed from the skin surface side, and shows a core squeezed region. FIG. 3 is a plan view of the absorption core according to the embodiment as viewed from the skin surface side, and shows a region where the basis weight of the absorption material is different.

(1) Outline of Embodiment At least the following matters will be clarified by the description of this specification and the accompanying drawings.
The absorbent article according to one embodiment has a longitudinal direction and a width direction orthogonal to each other, an absorption core having an absorbing material, and a core pressing region provided with a core pressing portion obtained by compressing at least the absorbing core in the thickness direction. Have. The core squeezing region includes a first squeezing region arranged at one end of the absorption core in the longitudinal direction and a second squeezing region arranged at the other end of the absorption core in the longitudinal direction. , Have. Between the first squeezed region and the second squeezed region, a non-squeezed region in which the core squeezed portion is not provided is provided. The shape of the inner end side in the longitudinal direction of the first squeezed region is different from the shape of the inner end side in the longitudinal direction of the second squeezed region. According to this aspect, by providing the first squeezing region and the second squeezing region, the rigidity of the longitudinal end portion of the absorption core can be increased. By increasing the rigidity of the end portion in the longitudinal direction of the absorption core, it is possible to suppress defects during transportation and appropriately convey the absorption core. Further, the shape of the inner end side of the first squeezed region and the shape of the inner end side of the second squeezed region are different, and the rigidity of one of the first squeezed region and the second squeezed region is higher than the rigidity of the other. Become. By arranging the side with relatively high rigidity on the downstream side in the transport direction, it is possible to further suppress defects during transport. In addition, the rigidity of the entire absorption core can be suppressed as compared with the configuration in which the rigidity is similarly increased in both the first compression region and the second compression region. Further, a non-compressed region is provided inside the core compressed region in the longitudinal direction. The rigidity of the absorption core can be reduced in the non-squeezed region, and the deterioration of the wearing feeling can be suppressed. In addition, since the shape of the inner end side of the first squeezed region and the shape of the inner end side of the second squeezed region are different, it is possible to improve the wearing feeling when the user wears it in an appropriate front-back direction due to the difference in shape.

The absorbent article according to the other aspect has a longitudinal direction and a width direction orthogonal to each other, an absorption core having an absorbing material, and a core pressing portion obtained by compressing the absorbing core in a thickness direction at least. The absorbable article includes a core squeezing region in which the core squeezing portion is provided at the longitudinal end of the absorbing core, and a non-core squeezing region in which the core squeezing portion is not provided inside the core squeezing region in the longitudinal direction. It has a squeezed area. The basis weight of the absorbent material in the core compressed region is higher than the basis weight of the absorbent material in the non-compressed region adjacent to the core compressed region. According to this aspect, the longitudinal end of the absorption core is stiffened by the core squeezed region and is stiffened by the relatively high basis weight. By increasing the rigidity of the end portion in the longitudinal direction of the absorption core, it is possible to suppress defects during transportation and appropriately convey the absorption core. Further, inside the core pressing region in the longitudinal direction, an adjacent region is provided in which the core pressing portion is not provided and the basis weight of the absorbent material is low. The rigidity of the absorption core can be reduced in the adjacent region, and the deterioration of the wearing feeling can be suppressed.

According to a preferred embodiment, the core squeezing region has a first squeezing region arranged on one side in the longitudinal direction and a second squeezing region arranged on the other side in the longitudinal direction. The shape of the inner end side in the longitudinal direction of the first squeezed region is different from the shape of the inner end side in the longitudinal direction of the second squeezed region. According to this aspect, the shape of the inner end side of the first squeezed region and the shape of the inner end side of the second squeezed region are different, and the rigidity of one of the first squeezed region and the second squeezed region is the other. It is higher than the rigidity. By arranging the side with relatively high rigidity on the downstream side in the transport direction, it is possible to further suppress defects during transport. In addition, the rigidity of the entire absorption core can be suppressed as compared with the configuration in which the rigidity is similarly increased in both the first compression region and the second compression region.

According to a preferred embodiment, the area of the first squeezed area is larger than the area of the second squeezed area. According to this aspect, the area of the first squeezed region is large and the rigidity of the first squeezed region is high. By arranging the first squeezed region side, which has relatively high rigidity, on the downstream side in the transport direction, it is possible to further suppress problems during transport. In addition, the rigidity of the entire absorption core can be suppressed as compared with the configuration in which the rigidity is similarly increased in both the first compression region and the second compression region.

According to a preferred embodiment, the core squeezed region has a bulging squeeze bulge that extends inward in the longitudinal direction along the longitudinal direction. The squeezed bulge portion is provided only in the first squeezed region of the first squeezed region and the second squeezed region. According to this aspect, by providing the squeezed bulge portion, the rigidity of the absorption core can be increased in a wide range in the longitudinal direction in the first squeezed region. Further, since the squeezing bulge portion is not provided on the second squeezing region side, the rigidity of the entire absorption core can be suppressed and the deterioration of the wearing feeling can be suppressed.

According to a preferred embodiment, the squeezed bulges are spaced apart in the width direction. The non-squeezed region is provided between the squeezed bulges. By providing the squeezed bulges at intervals in the width direction, the rigidity of the absorption core is increased by the squeezed bulges, while the non-squeezed region between the squeezed bulges ensures flexibility and deteriorates the fit. Can be suppressed.

According to a preferred embodiment, the first squeezed region is located at the rear end of the absorption core. The rear end of the absorbent article is susceptible to pressure from the buttocks when sitting or the like. By providing the first squeezing region and the squeezing bulging portion in the rear side region, the rigidity of the rear side region can be increased and the deformation due to the pressure of the wearer can be suppressed. Further, since the squeezed bulge portion extends inward in the longitudinal direction along the longitudinal direction, a deformation base point extending in the longitudinal direction is formed in the posterior region. Therefore, the posterior region tends to follow the unevenness of the body due to the bulge of the buttocks or the like in the cross section of the body extending in the width direction. It can improve the fit of the rear side area and suppress discomfort and leakage when worn.

According to a preferred embodiment, it has a main body pressing portion in which at least the absorption core and a top sheet arranged on the skin surface side of the absorption core are compressed in the thickness direction. The main body squeezed portion overlaps with a part of the squeezed bulge portion. According to this aspect, when the body pressure is received from the side, the absorbent article is deformed with the main body squeezed portion as a base point. At this time, since the squeezed portion of the main body overlaps with a part of the squeezed bulge portion, the squeezed bulge portion also serves as a starting point in conjunction with the squeezed portion of the main body, and it becomes easy to induce deformation of the absorbent article, and the shape of the body and the shape of the body Easy to follow the movement. In addition, since the main body squeezed portion overlaps with a part of the squeezed bulge portion and the main body squeezed portion does not overlap with the entire squeezed bulge portion, it is possible to prevent the rigidity of the absorbent article from becoming too high locally and absorb it. The flexibility of the entire sex article can be ensured.

According to a preferred embodiment, the main body squeezing portion includes a first main body squeezing portion arranged on the side of the first squeezing region with respect to the longitudinal center of the absorbent article, and a longitudinal center of the absorbent article. It has a second main body pressing portion arranged on the side of the second pressing region. The shape of the first main body pressing portion and the shape of the second main body pressing portion are different. According to this aspect, according to the configuration, the rigidity of the absorbent article as a whole can be designed in a well-balanced manner, for example, the rigidity of one side is increased, the rigidity of the other side is suppressed, and the rigidity of the absorbent article as a whole is suppressed. In addition, since the shape of the first main body pressing portion and the shape of the second main body pressing portion are different, the user can distinguish the front and back of the absorbent article by the difference in the shape, and the operability at the time of mounting can be improved. Further, since the absorbent article can be appropriately attached in the front-rear direction, the absorbent article can be reliably fitted to the body and the discomfort and leakage at the time of attachment can be suppressed.

According to a preferred embodiment, the absorption core is located in a high basis weight region provided at an end portion of the absorption core in the longitudinal direction and inside the high basis weight region in the longitudinal direction. It has a low basis weight area in which the basis weight of the absorbent material is lower than the amount area. The high basis weight region has the first high basis weight region on which at least a part of the first compression area overlaps, and the second high basis weight area on which at least a part of the second compression area overlaps. The area of the first high basis weight area is larger than the area of the second high basis weight area. The area of the first high basis weight region is large, and the rigidity on the first compression region side is high. By arranging the first squeezed region side, which has relatively high rigidity, on the downstream side in the transport direction, it is possible to further suppress problems during transport. In addition, the rigidity of the entire absorption core can be suppressed as compared with the configuration in which the rigidity is similarly increased in both the first compression region and the second compression region.

According to a preferred embodiment, the absorption core is located in a high basis weight region provided at an end portion of the absorption core in the longitudinal direction and inside the high basis weight region in the longitudinal direction. It has a low basis weight area in which the basis weight of the absorbent material is lower than the amount area. The high basis weight region is provided in a region overlapping the squeezed bulge portion. The low basis weight region is provided in a region overlapping the non-squeezed region between the squeezed bulges. According to this aspect, the rigidity of the region provided with the squeezed bulge portion can be further increased by the high basis weight region. Further, since the low basis weight region is provided in the non-squeezed region, the flexibility of the non-squeezed region can be ensured and the deterioration of the wearing feeling can be suppressed.

(2) Overall Outline of Absorbent Articles The absorbent articles according to the embodiment will be described below with reference to the drawings. In the description of the drawings below, the same or similar parts are designated by the same or similar reference numerals. However, it should be noted that the drawings are schematic and the ratio of each dimension is different from the actual one. Therefore, the specific dimensions, etc. should be determined in consideration of the following explanation. In addition, there may be a portion where the relationship and ratio of the dimensions of the drawings are different from each other. Further, when comparing the lengths and positional relationships in the present invention, unless otherwise specified, an stretchable absorbent article in which the absorbent article is stretched to a state where wrinkles are not formed by the elastic member is used.

FIG. 1 is a plan view of the absorbent article 1 according to the embodiment as viewed from the skin surface side. The absorbent article 1 is a sanitary napkin. The absorbent article 1 according to the present invention may be an absorbent article 1 used by being attached to a worn article such as underwear, and may be, for example, a light incontinence pad or a panty liner. good. FIG. 2 is a plan view showing the core pressing portion 85 of the absorption core 30. FIG. 3 is a plan view showing a region where the basis weight of the absorbent material is different. Here, the "skin surface side" corresponds to the side facing the wearer's skin during use. The "non-skin side" corresponds to the side that is turned away from the wearer's skin during use.

The absorbent article 1 has a longitudinal direction L and a width direction W. The longitudinal direction L is a direction extending from the front side (ventral side) of the wearer to the rear side (dorsal side), or a direction extending from the back side of the wearer to the front side. The width direction W is a direction orthogonal to the longitudinal direction L. The absorbent article 1 has a thickness direction extending toward the skin surface side and the non-skin surface side of the wearer. The absorbent article 1 includes an anterior region S1, a posterior region S2, and an inseam region S3. The inseam region S3 is arranged so as to straddle the center of the absorbent article in the longitudinal direction L, and includes an excretion port contact portion facing the wearer's excretion port (for example, vaginal opening). When the absorbent article 1 is attached to the underwear, the inseam area S3 is located in the inseam of the underwear and is an area arranged in the inseam of the wearer, that is, between the wearer's feet. The anterior region S1 is located on the anterior side of the inseam region S3. The front edge of the front region S1 defines the front edge of the absorbent article 1. The posterior region S2 is located posterior to the inseam region S3. The trailing edge of the posterior region S2 defines the trailing edge of the absorbent article 1.

The absorbent article may have a wing 3. The wing 3 may be provided in the inseam region S3. The front end edge of the wing 3 is defined by the base of the wing 3, and corresponds to the portion located on the front side of the two portions recessed inward in the width direction W. The front edge of the wing 3 may define the boundary between the inseam region S3 and the anterior region S1. The trailing edge of the wing 3 is defined by the base of the wing 3, and corresponds to the portion located on the rear side of the two portions recessed inward in the width direction W. The trailing edge of the wing 3 may define the boundary between the inseam region S3 and the posterior region S2.

The absorbent article 1 includes an absorption core 30 that absorbs body fluid, a liquid-permeable top sheet 10 that is arranged on the skin surface side of the absorption core 30, and a liquid that is arranged on the non-skin surface side of the absorption core 30. Includes an opaque backsheet (not shown). The top sheet 10 is directed to the wearer's skin and the back sheet is directed to the side opposite to the wearer's skin. The absorption core 30 is provided between the top sheet 10 and the back sheet.

The top sheet 10 may at least cover the central portion of the absorption core 30 in the width direction W. The top sheet 10 may extend in the longitudinal direction L from the front side region S1 to the rear side region S2. The top sheet 10 may be made of a liquid-permeable sheet such as a non-woven fabric or a perforated plastic film. The top sheet 10 may be configured by laminating a plurality of sheets, or may have a second sheet. The back sheet is a liquid impermeable sheet. As the back sheet, a polyethylene sheet, a laminated non-woven fabric mainly made of polypropylene or the like, a breathable resin film, a spunbond, or a sheet in which a breathable resin film is bonded to a non-woven fabric such as spunlace can be used. The absorption core 30 is arranged at least in the inseam region S3. Further, the absorption core 30 may extend from the inseam region S3 to the front side region S1. The absorbent core 30 has at least pulp as an absorbent material to absorb the liquid. The absorption core 30 may be wrapped by a core wrap. The absorbent material constituting the absorbent core 30 can be formed from, for example, pulp and a super absorbent polymer (SAP). The core wrap can be made of, for example, a non-woven fabric or a tissue sheet. As shown in FIG. 2, the absorption core 30 is provided with a core pressing portion 85 in which the absorption core 30 is compressed in the thickness direction. The configuration of the absorption core 30 will be described in detail later. The absorbent article 1 may have at least a body pressing portion 80 in which the absorbent core 30 and the top sheet 10 are compressed in the thickness direction. The main body pressing portions 80 are point-shaped, and a plurality of the main body pressing portions 80 are arranged at intervals.

The absorbent article 1 of the present embodiment is configured so that the absorbent core 30 can be appropriately conveyed while suppressing a decrease in wearing feeling due to the rigidity of the absorbent core 30. Next, a configuration for appropriately transporting the absorption core 30 while suppressing a decrease in wearing feeling will be described in detail. First, the absorption core 30 will be described in detail. The absorbent article 1 has a core squeezing region (first squeezing region 31 and second squeezing region 32) in which the core squeezing portion 85 is provided in the absorbing core 30. FIG. 2 is a plan view of the absorption core 30 as viewed from the skin surface side, and shows a core squeezed region. The core squeezing region is a region where the core squeezing portion 85 is provided at the end portion of the absorption core in the longitudinal direction L. The core squeezing region includes a first squeezing region 31 arranged at one end of the absorption core 30 in the longitudinal direction L and a second squeezing region arranged at the other end of the absorption core 30 in the longitudinal direction L. 32 and. In the present embodiment, one side of the longitudinal direction L is the rear side, and the other side of the longitudinal direction L is the front side. Therefore, the first squeezing region 31 is a region where the core squeezing portion 85 is provided at the trailing end edge 30R of the absorption core 30. The first squeezed region 31 of the present embodiment is a region arranged along the trailing edge 30R of the absorption core 30 and extending in the width direction W. The second squeezed region 32 is a region where the core squeezed portion 85 is provided at the front end edge 30F of the absorption core 30. The second squeezed region 32 of the present embodiment is a region arranged along the front end edge 30F of the absorption core 30 and extending in the width direction W. Further, the absorption core 30 may be provided with a longitudinal compression region 33 in addition to the core compression region. The longitudinal compression region 33 is an region provided with the core compression region 85, and is arranged between the first compression region 31 and the second compression region 32. The longitudinally compressed region 33 of the present embodiment is a region arranged along the outer edge 30E of the absorption core 30 and extending in the longitudinal direction L. The first squeezed region 31, the second squeezed region 32, and the longitudinal squeezed region 33 are connected to each other and are arranged in an annular shape along the outer edge of the absorption core 30.

A non-squeezed region 35 without a core squeezed portion 85 is provided between the first squeezed region 31 and the second squeezed region 32. The non-squeezed area 35 is arranged between the left and right longitudinal squeezed areas 33. The non-squeezed region 35 is a region other than the first squeezed region 31, the second squeezed region 32, and the longitudinal squeezed region 33 in the absorption core 30. The core pressing region is not only a region formed over the core pressing portion 85, but also a region in which the core pressing portion 85 is not formed in the form in which the core pressing portion 85 is formed in a certain pattern. It is a concept that also includes. Specifically, in the honeycomb shape in which regular hexagons are combined as in the present embodiment, the core pressing portion 85 is not formed inside the side sides constituting the regular hexagon, but the core pressing region is formed. do. Further, in the form in which the core pressing portion 85 in the shape of a plurality of dots is provided, the region between the dots does not form the core pressing portion 85, but constitutes the core pressing region. The core squeezed region and the longitudinal squeezed region 33 of the present embodiment are arranged along the outer edge (including the front edge, the trailing edge, and the outer edge) of the absorption core 30, and the non-squeezed region 35 is the core squeezed region. It is arranged inside the region and the longitudinally compressed region 33 in a plan view (inside of the longitudinal direction L and inside of the width direction W).

The shape of the first inner edge 31S, which is the inner edge of the first compression region 31 in the longitudinal direction L, is different from the shape of the second inner edge 32S, which is the inner edge of the second compression region 32 in the longitudinal direction L. ing. The first inner edge 31S is composed of a boundary between the first compressed region 31 and the non-compressed region 35. The first inner end side 31S of the present embodiment includes the front end edge of the first squeezing region 31, and includes a portion extending in the width direction W and a portion extending in the longitudinal direction L in the squeezing bulging portion described later. The second inner edge 32S is composed of a boundary between the second compressed region 32 and the non-compressed region 35. The second inner end side 32S of the present embodiment includes the rear end edge of the second squeezing region 32, is a side extending in the width direction W, and has an arc shape. The length of the first inner end side 31S may be different from the length of the second inner end side 32S.

By providing the first squeezing region 31 and the second squeezing region 32, the rigidity of the end portion of the absorption core 30 in the longitudinal direction L can be increased. Generally, when the absorption core 30 is conveyed during manufacturing, the absorption core 30 is conveyed at high speed along the longitudinal direction L. At this time, at the end of the absorption core 30 located on the downstream side in the transport direction in the longitudinal direction L, the absorption core 30 is likely to be turned over or twisted. Further, when there is a gap between transfer mechanisms such as a conveyor that conveys the absorption core 30, the rigidity of the absorption core 30 is low, and if the absorption core 30 is deformed, the absorption core 30 cannot be smoothly delivered. There was a risk. By increasing the rigidity of the end portion of the absorption core 30 in the longitudinal direction L, it is possible to suppress defects during transportation and appropriately convey the absorption core 30. Further, the shape of the first inner end side 31S and the shape of the second inner end side 32S are different, and the rigidity of one of the first squeezing region 31 and the second squeezing region 32 is higher than the rigidity of the other. By arranging the side with relatively high rigidity on the downstream side in the transport direction, it is possible to further suppress defects during transport. In addition, the rigidity of the entire absorption core 30 can be suppressed as compared with the configuration in which the rigidity is similarly increased in both the first compression region 31 and the second compression region 32. Further, a non-squeezed region 35 is provided inside the core squeezed region in the longitudinal direction L. The rigidity of the absorption core 30 can be reduced in the non-squeezed region 35, and the deterioration of the wearing feeling can be suppressed. In addition, since the shape of the first inner end side 31S of the first squeezing area 31 and the shape of the second inner end side 32S of the second squeezing area 32 are different, the user wears them in an appropriate front-back direction depending on the difference in shape. Sometimes the fit can be improved.

The area of the first squeezed area 31 may be larger than the area of the second squeezed area 32. The area of the first squeezed area 31 is large, and the rigidity of the first squeezed area 31 is high. By arranging the first squeezing region 31 side, which has relatively high rigidity, on the downstream side in the transport direction, it is possible to further suppress problems during transport. In addition, the rigidity of the entire absorption core 30 can be suppressed as compared with the configuration in which the rigidity is similarly increased in both the first compression region 31 and the second compression region 32. Further, the length of the first inner end side 31S may be longer than the length of the second inner end side 32S. By arranging the first squeezing region 31 side, which has relatively high rigidity, on the downstream side in the transport direction, it is possible to further suppress problems during transport. Further, the core compression region and the longitudinal compression region 33 may be provided at least a part of the outer edge of the absorption core 30. The outer edge of the absorption core 30 is more likely to be hit by air during transport. By providing the core pressing portion 85 on the outer edge of the absorption core 30, it is possible to further suppress problems during transportation of the absorption core 30.

The core squeezed region may have a bulging squeeze portion 36 that extends inward in the longitudinal direction L along the longitudinal direction L. The squeeze bulge 36 may have a straight portion extending parallel to the longitudinal direction L. The squeezing swelling portion 36 may be provided only in the first squeezing region 31 of the first squeezing region 31 and the second squeezing region 32. That is, the squeezed swelling portion 36 is provided in the first squeezed region 31 and not in the second squeezed region 32. By providing the squeeze bulge portion 36, the rigidity of the absorption core 30 can be increased in a wide range of the longitudinal direction L in the first squeeze region 31. Further, since the squeezing bulge portion 36 is not provided on the second squeezing region 32 side, the rigidity of the entire absorption core 30 can be suppressed and the deterioration of the wearing feeling can be suppressed.

The squeezed bulging portions 36 may be arranged at intervals in the width direction W. A non-squeezed region 35 may be provided between the squeezed bulges 36. The squeezed bulging portions 36 of the present embodiment are provided in pairs on both sides of the absorption core 30 with the center of the width direction W interposed therebetween. By providing the squeezed bulges 36 at intervals in the width direction W, the rigidity of the absorption core 30 is increased by the squeezed bulges 36, and the flexibility is secured by the non-squeezed regions 35 between the squeezed bulges 36. , Deterioration of wearing feeling can be suppressed. The widthwise length of the non-squeezed regions 35 located between the squeezed bulges 36 may be longer than the widthwise length W36 of each squeezed bulge 36. It becomes easier to secure the flexibility of the non-squeezed region 35.

The first squeezed region 31 may be located at the rear end of the absorption core 30. The rear end portion of the absorption core 30 includes the rear end edge of the absorption core 30 and is a region extending from the rear end portion to the front side in a certain range (for example, a length in the longitudinal direction is 10 mm). The rear end portion of the absorbent article 1 is susceptible to pressure from the buttocks when sitting or the like. By providing the first squeezing region 31 including the squeezing bulge portion 36 in the rear side region S2, the rigidity of the rear side region S2 can be increased and the deformation due to the wearer's pressure can be suppressed. Further, since the squeezed bulge portion 36 extends inward in the longitudinal direction L along the longitudinal direction L, a deformation base point extending in the longitudinal direction L is formed in the rear side region S2. Therefore, the rear side region S2 tends to follow the unevenness of the body formed by the bulge of the buttocks or the like in the cross section of the body extending in the width direction W. The fit of the rear side region S2 can be improved, and discomfort and leakage during mounting can be suppressed. In the present embodiment, the first squeezing region 31 is arranged at the rear end portion of the absorption core 30, and the second squeezing region 32 is arranged at the front end portion of the absorption core 30. The squeezed region 31 may be arranged at the front end portion of the absorption core 30, and the second squeezed region 32 may be arranged at the rear end portion of the absorption core 30. The absorption core may be conveyed so that the front end portion of the absorption core 30 is on the downstream side in the transfer direction.

The core pressing portion 85 may have a honeycomb shape in which regular hexagons are combined. Since the sides 851 constituting the regular hexagon extend in multiple directions, they are easily deformed flexibly. Further, the core pressing portion 85 has a point-shaped portion 852 separated from the side 851 of the regular hexagon inside the regular hexagon. Since it has the point-shaped portion, it is possible to increase the rigidity inside the regular hexagon, flexibly deform it by the honeycomb shape, partially increase the rigidity, and suppress the twist of the absorption core 30.

The squeezed bulge 36 may extend inward in the longitudinal direction L from the virtual line FL connecting the outer edges of the first squeezed region 31. According to this configuration, the rigidity of the region inside the longitudinal direction L is increased from the first squeezed region 31 arranged along the rear end edge of the absorption core 30, and not only the rear end portion of the absorption core 30 but also the rear end portion is increased. It is possible to suppress the turning of the absorption core 30 over a wide range extending inward in the longitudinal direction L from the end portion. Further, the length W36 in the width direction W of the squeezed bulge portion 36 may be longer than the length W33 in the width direction W of the longitudinal squeezed region 33. Since the length W36 of the squeezed bulge portion 36 in the width direction W is relatively long, it is possible to suppress the turning of the absorption core 30 over a wide range of the width direction W of the absorption core 30. Further, since the length W33 in the width direction W of the longitudinally compressed region 33 is relatively short, it is possible to prevent the outer edge 30E of the absorption core 30 from becoming too hard, and when the outer edge 30E of the absorption core 30 hits the leg. The feeling of strangeness can be suppressed. In the form in which the length W36 in the width direction W of the squeezed bulge portion 36 and the length W33 in the width direction W of the longitudinal squeezed region 33 change, the maximum width may be compared.

The first inner end side 31S includes a side portion 31S1 extending outward in the longitudinal direction L toward the inside of the width direction W from the outer edge of the first inner end side 31S, and the inside of the width direction W from the inner edge of the side portion 31S1. It may have an interior 31S2 extending inward in the longitudinal direction L towards. The inner 31S2 may extend inward in the longitudinal direction L from the virtual line FL connecting the outer edges of the first squeezed region 31. The inner 31S2 may be linear extending in the longitudinal direction L. According to such a configuration, it is possible to suppress the turning of the absorption core 30 over a wide range extending inward in the longitudinal direction L from the rear end portion of the absorption core 30.

The main body squeezing portion 80 may overlap with a part of the squeezing bulging portion 36. In the region where the main body pressing portion 80 and the squeezing bulging portion 36 overlap, the core squeezing portion 85 and the main body squeezing portion 80 are formed, and the absorption core 30 is compressed a plurality of times. The main body pressing portion 80 of the present embodiment is dotted. A plurality of dot-shaped main body pressing portions 80 overlap with the pressing and bulging portions 36. The absorbent article deforms with the main body pressing portion 80 as a base point when it receives body pressure from the side at the time of wearing. At this time, since the main body squeezing portion 80 overlaps with a part of the squeezing swelling portion 36, the squeezing swelling portion 36 also serves as a starting point in conjunction with the main body squeezing portion 80, and it becomes easy to induce deformation of the absorbent article 1. , Easy to follow the shape and movement of the body. Further, since the main body squeezing portion 80 overlaps with a part of the squeezing swelling portion 36 and the main body squeezing portion 80 does not overlap with the entire squeezing swelling portion 36, the rigidity of the absorbent article 1 becomes too high locally. Can be suppressed and the flexibility of the entire absorbent article 1 can be ensured.

The main body pressing portion 80 has a first main body pressing portion 81 arranged on the first pressing region 31 side of the article longitudinal center 1CL, which is the center of the absorbent article in the longitudinal direction L, and a second pressing of the article longitudinal center 1CL. It has a second main body pressing portion 82 arranged on the region 32 side. The first main body pressing portion 81 of the present embodiment is the main body pressing portion 80 located on the rear side of the article longitudinal center 1CL, and the second main body pressing portion 82 is the main body pressing portion located on the front side of the article longitudinal center 1CL. Part 80. The first main body pressing portion 81 overlaps with the pressing and bulging portion 36. Therefore, while increasing the rigidity of the absorption core 30 on the side of the first squeezing region 31 having the squeezing bulging portion 36, the deformation base point by the squeezing bulging portion 36 can be provided on the side of the first squeezing region 31 to improve the fit to the body. ..

The shape of the first main body pressing portion 81 and the shape of the second main body pressing portion 82 may be different. According to this configuration, the rigidity of the absorbent article 1 as a whole can be designed in a well-balanced manner, for example, the rigidity of one side is increased, the rigidity of the other side is suppressed, and the rigidity of the absorbent article 1 as a whole is suppressed. In addition, since the shape of the first main body pressing portion 81 and the shape of the second main body pressing portion 82 are different, the user can distinguish the front and back of the absorbent article 1 by the difference in the shape, and the operability at the time of mounting can be improved. .. Further, since the absorbent article can be appropriately attached in the front-rear direction, the absorbent article can be reliably fitted to the body and the discomfort and leakage at the time of attachment can be suppressed. In the present embodiment, the area of the second main body pressing portion 82 is larger than the area of the first main body pressing portion 81, and the area of the first pressing region 31 is larger than the area of the second main body pressing region 32. Therefore, the rigidity of the rear end portion of the absorption core 30 can be increased by the first pressing region 31, while the rigidity of the front end portion of the absorption core 30 can be increased by the second main body pressing portion 82, and the rigidity of the absorbent article as a whole is well-balanced. Can be enhanced.

The area of the first main body pressing portion 81 may be smaller than the area of the second main body pressing portion 82. Since the area of the first squeezing region 31 is larger than the area of the second squeezing region 32 and the area of the first main body squeezing portion 81 is smaller than the area of the second main body squeezing portion 82, the rear end of the absorption core by the core squeezing region The rigidity of the front end portion of the absorbent article can be increased by the main body pressing portion 80 while increasing the rigidity of the portion. Therefore, it is possible to design the rigidity of the entire absorbent article in a well-balanced manner while suppressing defects during transportation of the absorbent core. Therefore, it is possible to suppress defects such as the front end portion or the rear end portion of the absorbent article being locally hard or soft at the time of mounting.

The absorption core 30 may have regions in which the basis weight of the absorption material is different. FIG. 3 is a plan view of the absorption core 30 as viewed from the skin surface side, and shows a region where the basis weight of the absorption material is different. The regions having different basis weights of the absorbent materials are adjacent to the first region R1 provided at the end of the absorption core 30 in the longitudinal direction L and the first region R1 and inside the longitudinal direction L from the first region R1. The second region R2 located in the second region R2, the third region R3 located inside the longitudinal direction L from the second region R2 and located in the center of the width direction W of the absorption core 30, and longer than the second region R2. It has a fourth region R4 located inside the direction L and laterally located in the width direction W of the absorption core 30. The third region R3 is sandwiched between the left and right fourth regions R4. In FIG. 3, different diagonal lines are provided from the first region R1 to the fourth region R4. The first region R1 to the fourth region R4 have different basis weights of the absorbent material. In the present embodiment, the basis weight of the first region R1 is 250 g / m ² , the basis weight of the second region R2 is 200 g / m ² , and the basis weight of the third region R3 is 600 g / m. ² , and the basis weight of the fourth region R4 is 280 g / m ² . The basis weight of the second region R2 <the basis weight of the first region R1 <the basis weight of the fourth region R4 <the basis weight of the third region R3.

Here, the measurement of the "basis weight of the absorption core" in the present specification can be measured by the following method. In the case where multiple absorbent articles are contained in a package, five absorbent articles are taken out from the same package, and in that state, in an atmosphere of 20 ° C ± 2 ° C and a relative humidity of 60% ± 5% RH. Use a sample that has been left for 12 hours. For absorbent articles packaged with individual wrapping sheets, etc., the package is opened, the folded absorbent article is unfolded, the part for measuring the basis weight is cut out from the absorbent article, and the weight of the cut out part is measured. do. Next, the absorption core is removed from the cut out portion, and the weight of the top sheet, back sheet, etc. other than the absorption core is measured. If the absorption core remains with an adhesive or the like, remove it completely with toluene or the like, dry it at room temperature for 24 hours, and then measure the measurement. The basis weight is calculated based on the area of the portion where the basis weight is to be measured, excluding the weight other than the absorption core from the weight of the cut out portion. If there are multiple areas for measuring the basis weight of the absorption core and the plurality of areas are covered with the same sheet (top sheet, core wrap, etc.), the basis weight of the sheets is considered to be the same. Therefore, after cutting out the portion for measuring the basis weight from the absorbent article, the basis weight of the absorption core may be measured without peeling off the sheet.

The basis weight of the absorbent material in the first region R1 is lower than the basis weight of the absorbent material in the second region R2. The first region R1 constitutes the "high basis weight region" of the present invention, and the second region R2 constitutes the "low basis weight region" of the present invention. The "high basis weight area" of the present invention may have a higher basis weight than the adjacent area, and has a lower basis weight than the area located inside the adjacent area in the longitudinal direction (third area and fourth area). May be good. The first region R1 as a high basis weight region is a first high basis weight area R11 on which at least a part of the first compression area 31 overlaps, and a second high basis weight area R12 on which at least a part of the second compression area 32 overlaps. And have. The first high basis weight region R11 may overlap at least a part of the first compression region 31, and may overlap the entire area of the first compression region 31. The first high basis weight region R11 of the present embodiment may coincide with the range of the first squeezed region 31. Further, the second high basis weight region R12 may overlap at least a part of the second compression region 32, and may overlap the entire second compression region 32. The second high basis weight region R12 of the present embodiment may coincide with the range of the second squeezing region 32. The first high basis weight region R11 of the present embodiment is arranged at the rear end portion of the absorption core 30, and the second high basis weight region R12 is arranged at the front end portion of the absorption core 30. Therefore, the basis weight of the absorbent material in the core compressed region (first compressed region 31 and second compressed region) is higher than the basis weight of the absorbent material in the non-compressed region 35 adjacent to the core compressed region. By having the first high basis weight region R11 and the second high basis weight region R12, the rigidity of the region provided with the core pressing portion 85 can be further increased, and the rigidity of the end portion of the absorption core 30 can be further increased. Can be done. The basis weight of at least one of the absorbent materials in the first squeezed region 31 and the second squeezed region 32 may be higher than the basis weight of the absorbent material in the adjacent region. In the ear embodiment, the basis weight of the absorbent material in both the first compressed region 31 and the second compressed region 32 is higher than the basis weight of the absorbent material in the adjacent region.

The area of the first high basis weight region R11 may be larger than the area of the second high basis weight area R12. The area of the first high basis weight region R11 is large, and the rigidity of the first squeezed region 31 side is high. By arranging the first squeezing region 31 side, which has relatively high rigidity, on the downstream side in the transport direction, it is possible to further suppress problems during transport. In addition, the rigidity of the entire absorption core 30 can be suppressed as compared with the configuration in which the rigidity is similarly increased in both the first compression region 31 and the second compression region 32.

The first region R1 as the high basis weight region may be provided in a region overlapping the squeezed bulge portion 36. The first region R1 may overlap with at least a part of the squeezed bulge portion 36, and may overlap with the entire area of the squeeze bulge portion 36. The rigidity of the region where the squeeze bulge portion 36 is provided can be further increased by the high basis weight region. The second region R2 as the low basis weight region may be provided in a region overlapping the non-squeezed region 35 between the squeezed bulging portions 36. The second region R2 may overlap with at least a part of the non-squeezed region 35, and may overlap with the entire non-squeezed region 35. Since the low basis weight region is provided in the non-squeezed region 35, the flexibility of the non-squeezed region 35 can be ensured and the deterioration of the wearing feeling can be suppressed.

The basis weight of the absorbent material in the first compressed region 31 is higher than the basis weight of the absorbent material in the adjacent region adjacent to the first compressed region 31 in the non-compressed region 35, and the basis weight of the absorbent material in the second compressed region 32. May be higher than the basis weight of the absorbent material in the non-squeezed region 35 adjacent to the second squeezed region 32. In the present embodiment, the range of the first region R1 and the range of the first squeezed region are the same, and the range of the first region R1 and the range of the second squeezed region 32 are the same. The basis weight of the absorbing material in the second pressing region 32 is the basis weight of the absorbing material in the first region R1. The second region in the present embodiment is adjacent to the first region and constitutes the "adjacent region" of the present invention. The end portion of the absorption core 30 in the longitudinal direction L is increased in rigidity by the first pressing region 31 and the second pressing region 32, and is increased in rigidity by having a relatively high basis weight. By increasing the rigidity of the end portion of the absorption core 30 in the longitudinal direction L, it is possible to suppress defects during transportation and appropriately convey the absorption core 30. Further, the core pressing portion 85 is not provided inside the longitudinal direction L with respect to the first pressing region 31 and the second pressing region 32, and the basis weight of the absorbent material is low. The rigidity of the absorption core 30 can be reduced in the adjacent region, and the deterioration of the wearing feeling can be suppressed.

The first region R1 as the high basis weight region has a bulging basis weight bulging portion R5 extending inward in the longitudinal direction L along the longitudinal direction L. The basis weight bulging portion R5 may be provided only in the first high basis weight area R11 of the first high basis weight area R11 and the second high basis weight area R12. That is, the basis weight bulging portion R5 is provided in the first high basis weight region R11, and is not provided in the second high basis weight area R12. By providing the basis weight bulging portion R5, the rigidity of the absorption core 30 can be increased in a wide range of the longitudinal direction L in the first high basis weight region R11. Further, since the basis weight bulging portion R5 is not provided in the second high basis weight region R12, the rigidity of the entire absorption core 30 can be suppressed and the deterioration of the wearing feeling can be suppressed.

The basis weight bulging portions R5 may be arranged at intervals in the width direction W. A second region R2 as a low basis weight region may be provided between the basis weight bulging portions R5. The basis weight bulging portion R5 of the present embodiment coincides with the range of the squeezed bulging portion 36, and the second region R2 as the low basis weight region is arranged in the non-squeezed region 35. By providing the basis weight bulging portions R5 at intervals in the width direction W, the rigidity of the absorption core 30 is increased by the basis weight bulge portion R5, and the low basis weight region (second) between the basis weight bulge portions R5. The area) ensures flexibility and suppresses deterioration of wearing comfort.

Although the present invention has been described in detail using the above-described embodiments, it is clear to those skilled in the art that the present invention is not limited to the embodiments described in the present specification. The present invention can be implemented as modifications and modifications without departing from the spirit and scope of the present invention as determined by the description of the scope of claims. Therefore, the description of the present specification is for the purpose of exemplary explanation and does not have any limiting meaning to the present invention.

1: Absorbent article 30: Absorbent core 31: First squeezed area (core squeezed area)
31S: 1st inner edge 32: 2nd squeezed area (core squeezed area)
32S: 2nd inner edge 35: Non-squeezed area 36: Squeezed swelling part 80: Main body squeezing part 81: 1st main body squeezing part 82: 2nd main body squeezing part 85: Core squeezing part FL: Virtual line R1: 1st Area (high basis weight area)
R11: 1st high basis weight area R12: 2nd high basis weight area R2: 2nd area (adjacent area, low basis weight area)
R3: Third area R4: Fourth area R5: Basis weight bulge S1: Front side area S2: Rear side area S3: Inseam area L: Longitudinal direction W: Width direction

Claims (11)

In the longitudinal and width directions that are orthogonal to each other,
An absorbent core with an absorbent material and
An absorbent article having at least a core compression region provided with a core compression portion obtained by compressing the absorption core in the thickness direction.
The core squeezing region includes a first squeezing region arranged at one end of the absorption core in the longitudinal direction and a second squeezing region arranged at the other end of the absorption core in the longitudinal direction. And have
A non-squeezed region in which the core squeezed portion is not provided is provided between the first squeezed region and the second squeezed region.
An absorbent article in which the shape of the inner end side in the longitudinal direction of the first squeezed region is different from the shape of the inner end side in the longitudinal direction of the second squeezed region. In the longitudinal and width directions that are orthogonal to each other,
An absorbent core with an absorbent material and
An absorbent article having at least a core squeezed portion obtained by compressing the absorbent core in the thickness direction.
A core squeezed region in which the core squeezed portion is provided at the longitudinal end of the absorption core, and a non-squeezed region in which the core squeezed portion is not provided inside the core squeezed region in the longitudinal direction. Have,
An absorbent article in which the basis weight of the absorbent material in the core pressed region is higher than the basis weight of the absorbent material in the adjacent region adjacent to the core pressed region in the non-compressed region. The core squeezing region has a first squeezing region arranged on one side in the longitudinal direction and a second squeezing region arranged on the other side in the longitudinal direction.
The absorbent article according to claim 2, wherein the shape of the inner end side in the longitudinal direction of the first squeezed region is different from the shape of the inner end side in the longitudinal direction of the second squeezed region. The absorbent article according to claim 1 or 3, wherein the area of the first squeezed area is larger than the area of the second squeezed area. The core squeezed region has a bulging squeeze bulge that extends inward in the longitudinal direction along the longitudinal direction.
The one according to any one of claims 1, 3 and 4, wherein the squeezed bulge portion is provided only in the first squeezed region of the first squeezed region and the second squeezed region. Absorbent article. The squeezed bulges are arranged at intervals in the width direction.
The absorbent article according to claim 5, wherein the non-squeezed region is provided between the squeezed bulges. The absorbable article of claim 5 or 6, wherein the first squeeze region is located at the rear end of the absorption core. It has a main body pressing portion in which at least the absorption core and the top sheet arranged on the skin surface side of the absorption core are compressed in the thickness direction.
The absorbent article according to any one of claims 5 to 7, wherein the main body pressing portion overlaps a part of the pressing and bulging portion. The main body squeezing portion includes a first main body squeezing portion arranged on the side of the first squeezing region with respect to the center in the longitudinal direction of the absorbent article, and the second squeezing region with respect to the center in the longitudinal direction of the absorbent article. It has a second body squeezing part, which is arranged on the side,
The absorbent article according to claim 8, wherein the shape of the first main body pressing portion and the shape of the second main body pressing portion are different. The absorption core is located inside the high basis weight region provided at the end portion of the absorption core in the longitudinal direction and the high basis weight region in the longitudinal direction, and is an absorption material rather than the high basis weight region. Has a low basis weight area, and has a low basis weight area,
The high basis weight region includes a first high basis weight region in which at least a part of the first compression area overlaps, and a second high basis weight area in which at least a part of the second compression area overlaps.
The absorbent article according to any one of claims 1, 3, and 4, wherein the area of the first high basis weight area is larger than the area of the second high basis weight area. The absorption core is located inside the high basis weight region provided at the end portion of the absorption core in the longitudinal direction and the high basis weight area in the longitudinal direction, and is an absorption material rather than the high basis weight area. Has a low basis weight area, and has a low basis weight area,
The high basis weight region is provided in a region overlapping the squeezed bulge portion.
The absorbent article according to any one of claims 5 to 9, wherein the low basis weight region is provided in a region overlapping the non-squeezed region between the squeezed bulges.

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