JP5651555B2 - Absorbent articles - Google Patents

Description

  The present invention relates to an absorbent article such as a sanitary napkin, and relates to an absorbent article that can suppress a decrease in absorption performance when a body fluid is absorbed.

  Patent Document 1 discloses a sanitary napkin as an absorbent article having a liquid-permeable top sheet, a liquid-impermeable back sheet, and an absorbent body disposed between the top sheet and the back sheet. A sanitary napkin having a compression region in which a compression portion is formed by compressing the absorbent body in the thickness direction of the absorbent article at the end of the absorbent body in the width direction of the absorbent article is described. In the compression region of the sanitary napkin of Patent Document 1, a pressing groove is formed by compressing the topsheet and the absorbent body in the thickness direction together with the compression portion. Since the compression part and the squeezing groove are formed in the compression region at the end in the width direction of the absorbent body, the body fluid excreted from the excretion port is absorbed by the compression part and the squeezing groove to suppress the side leakage of the body fluid. Can do.

JP 2009-125485 A (Fig. 8, paragraph 0053, etc.)

However, the sanitary napkin described above has the following problems.
The sanitary napkin described above is provided with compression regions at both ends in the width direction of the absorbent body, and the absorbent body between the compressed regions is provided with an uncompressed region in which no compression portion is formed. The density of the absorber in the uncompressed region is lower than the density of the absorber in the compressed region. The non-compressed region having a relatively low density is less likely to maintain its shape and more easily deformed when absorbing body fluid than the compressed region. When the absorber that has absorbed the body fluid is deformed, the distance between the topsheet disposed above the absorber and the absorber is not maintained constant. Therefore, the body fluid from the top sheet to the absorber cannot be smoothly transferred, and the absorption performance may be reduced.

  The present invention has been made in view of the above-described problems, and can prevent side leakage of body fluid, suppress deformation of the absorber when absorbing body fluid, and suppress deterioration in absorption performance. It is an object to provide an absorbent article that can be used.

  In order to solve the above-described problems, an absorbent article according to the present disclosure includes a liquid-permeable top sheet (top sheet 10), a liquid-impermeable back sheet (back sheet 20), and the top sheet and the back sheet. A compression part (compression part) that compresses the absorber in the thickness direction of the absorbent article, and the topsheet and the absorption in the thickness direction. A linear compressed part (linear compressed part 80), which is formed by compressing the body in the thickness direction, is an absorbent article, and is formed of an excretory opening contact area that is disposed to face the excretory opening of the wearer. The first region (first region A1) including the center and the compression portion is formed, and disposed on both sides in the width direction of the absorbent article from the first region, and the compression portion is formed A second region (second region A2) and the second region; And a third region (third region A3) disposed on both sides in the width direction, and the linear compressed portion extends in the longitudinal direction of the absorbent article in the second region. The density of the absorber in the third region is lower than the density of the absorber in the first region and lower than the density of the absorber in the second region.

  The first region including the center of the excretory opening contact region is formed with a compressed portion in which the absorbent body is compressed, and therefore, the collected body in the case where the body fluid is absorbed as compared with the region in which the compressed portion is not formed. Can be suppressed. Therefore, the dispersion | variation in the distance of a surface sheet and an absorber can be suppressed, the distance of a surface sheet and an absorber can be maintained substantially constant, and the fall of the absorption performance at the time of absorbing a bodily fluid can be suppressed. Furthermore, the first region is less likely to be deformed when a force is applied from the outer side in the width direction to the inner side compared to the region where the absorbent body is not compressed, and the first region maintains the state facing the excretion port. It becomes easy to do.

  Moreover, the 2nd area | region in which the compression part and the linear pressing part were formed in the width direction outer side rather than the 1st area | region of an absorber is provided. By providing the second region, the body fluid absorbed in the first region can be retained, and side leakage of the body fluid can be prevented.

  Furthermore, a third region having a lower density than the first region and the second region is provided outside the second region in the width direction. The absorbent body in the third region has a density lower than that of the first region and the like, and is easily deformed when the wearer's legs and the like hit both side portions in the width direction of the absorbent body. Therefore, the resistance to the wearer when pressed from the outer side in the width direction to the inner side in the width direction by the wearer's legs or the like can be reduced, and the wearing feeling of the wearer can be improved. Moreover, fit property can be improved by deform | transforming a 3rd area | region.

It is the top view seen from the skin contact surface side of the absorptive article concerning a 1st embodiment. It is a rear view of the absorbent article shown in FIG. It is a schematic cross section of the AA cross section shown in FIG. It is the top view seen from the skin contact surface side of the absorptive article concerning a 2nd embodiment. It is the top view seen from the skin contact surface side of the absorbent article which concerns on 3rd Embodiment. It is the top view seen from the skin contact surface side of the absorbent article which concerns on 4th Embodiment.

(First embodiment)
With reference to FIG.1 and FIG.2, the absorbent article 1 which concerns on 1st Embodiment is demonstrated. FIG. 1 is a plan view of the absorbent article, and FIG. 2 is a rear view of the absorbent article. 3 is a schematic cross-sectional view taken along the line AA shown in FIG. The absorbent article 1 according to the present embodiment is, for example, a sanitary napkin.

  The absorbent article 1 includes a top sheet 10 that comes into contact with the wearer's skin, a liquid-impermeable back sheet 20 that does not transmit liquid, and an absorber 30. The absorber 30 is disposed between the top sheet 10 and the back sheet 20. Therefore, the absorber 30 is shown with a broken line in FIG.1 and FIG.2. The absorbent body 30 is disposed at the central portion in the longitudinal direction L and the width direction W of the absorbent article 1.

  The absorbent article 1 includes wing portions 43 and 44 provided outside the absorbent body 30 in the width direction W orthogonal to the longitudinal direction L in the plan view shown in FIG. Furthermore, the absorbent article 1 includes side sheets 41 and 42 provided outside the absorber 30 in the width direction W.

  The top sheet 10 is a liquid-permeable sheet that transmits liquid such as body fluid. The top sheet 10 covers at least the surface of the absorber 30. The top sheet 10 is not particularly limited as long as it is a sheet-like material having a structure that allows liquid to permeate, such as a nonwoven fabric, a woven fabric, a perforated plastic sheet, and a mesh sheet. Either natural fibers or chemical fibers can be used as the woven or non-woven material.

  The back sheet 20 has substantially the same length as that of the top sheet 10. As the back sheet 20, a polyethylene sheet, a laminated nonwoven fabric mainly composed of polypropylene, a breathable resin film, a spunbond, a sheet obtained by bonding a breathable resin film to a nonwoven fabric such as spunlace, or the like can be used. The back sheet 20 is preferably made of a material having flexibility that does not cause a sense of incongruity when worn. The back sheet 20 is desirably liquid-impervious and moisture-permeable, and can be constituted by a microporous sheet obtained by stretching a melt-kneaded inorganic filler such as polyethylene or polypropylene. .

The absorber 30 includes hydrophilic fibers and pulp. The absorber 30 is formed of a material that can absorb body fluid such as menstrual blood. The absorbent body 30 may be formed by laminating hydrophilic fibers or powder by the airlaid method, an airlaid sheet obtained by forming hydrophilic fibers or powder into a sheet shape by the airlaid method, or a tissue (for example, It may be formed by placing pulverized pulp mixed with a superabsorbent polymer on a basis weight of 15 g / m ² ) and wrapping it with a tissue.

The absorbent body 30 according to the present embodiment is configured by wrapping a pulp in which cotton-like pulp, synthetic pulp, or the like is laminated with protective paper (not shown). The protective paper is for maintaining the shape of the pulp, and for example, crepe paper or tissue paper can be used. For example, the basis weight of the absorber core 31 (see, for example, FIG. 3) located in the center of the absorbent body 30 in the width direction is higher than the basis weight of the absorbent body located on both sides in the width direction. Specifically, the basis weight of the absorber core 31 is 100 to 800 g / m ² , and an absorber positioned around the absorber core 31 (for example, an absorption positioned on both sides in the width direction of the absorber core 31). The basis weight of the body is 100 to 500 g / m ² .

  The absorber 30 has a shape extending in the front-rear direction, and is approximately one size smaller than the back sheet 20. The length of the absorbent body 30 in the width direction W corresponds to the crotch interval of an adult female and is approximately 50 to 80 mm. The absorber 30 is bonded to the back sheet 20 with an adhesive such as hot melt. Moreover, in this Embodiment, the absorber 30 and the surface sheet 10 are adhere | attached with the hot-melt-adhesive 60 (refer FIG. 3).

  The side sheets 41 and 42 are disposed on both sides of the top sheet 10. The side sheets 41 and 42 can be selected from the same material as the top sheet 10. However, in order to prevent menstrual blood from flowing over the side sheets 41 and 42 to the outside of the absorbent article 1, it is preferable to have hydrophobicity or water repellency. The side sheets 41 and 42 cover a part of the side edge of the absorber 30 and the wing parts 43 and 44.

  In the absorbent article 1, the periphery of the surface sheet 10, the side sheets 41 and 42, and the back sheet 20 is joined, and the absorber 30 is enclosed. As a method for joining the top sheet 10 and the back sheet 20, any one or a combination of heat embossing, ultrasonic waves, or hot melt adhesive can be used.

  In the back sheet 20, the adhesive 50 is applied to the surface in contact with the undergarment in a plurality of regions (see FIG. 2). The adhesive 50 is intermittently disposed along the longitudinal direction L on the back side of the absorber. The adhesive 50 is also provided on the surface in contact with the undergarment in the wing part 43 and the wing part 44. In the state before use, the adhesive 50 is in contact with the release sheet 90. The release sheet 90 prevents the adhesive 50 from deteriorating before use. And the peeling sheet 90 is peeled by the wearer at the time of use.

  In addition, in the absorbent article which does not have the peeling sheet 90, you may be comprised so that it may prevent that an adhesive deteriorates before use with the packaging sheet which wraps an absorbent article separately. When the adhesive and the packaging sheet are in contact with each other, it is desirable that the surface of the packaging sheet be treated so that the adhesive can be peeled without reducing the adhesive strength of the adhesive.

  In the top sheet 10, a top sheet pressing portion 11 is formed by compressing the top sheet in the thickness direction. The surface sheet pressing part 11 is arrange | positioned at the grid | lattice form. The absorber 30 is formed with a compression portion 70 that is compressed in the thickness direction. In the absorbent article 1, a linear squeezed portion 80 is formed by compressing the topsheet 10 and the absorbent body 30 in the thickness direction.

  The compression unit 70 includes a first compression unit 71 formed at the front end of the absorbent body, a second compression unit 72 formed behind the first compression unit 71 and in a second region A2 described later, and an absorption And a third compression portion 73 formed at the rear end portion of the body 30.

  The first compression portion 71 is formed in the entire width direction of the absorber at the front end portion of the absorber 30. The outer shape of the front end of the first compression portion 71 is along the outer shape of the front end of the absorber, and has an arc shape extending in the width direction convex to the front side.

  The second compression unit 72 extends backward from the rear end of the first compression unit 71. The front end and the rear end of the second compression portion 72 are located at the end in the width direction of the absorber 30. The center in the longitudinal direction of the second compression portion 72 is located on the inner side in the width direction than the front end and the rear end of the second compression portion 72. The shape of the 2nd compression part 72 is the circular arc shape extended in the longitudinal direction convex in the width direction inner side.

  The third compression portion 73 is formed in the entire width direction of the absorber 30 at the rear end portion of the absorber 30. The outer shape of the rear end of the third compression portion 73 is formed along the outer shape of the rear end of the absorber 30, and has an arc shape extending in the convex width direction on the rear side.

  The linear pressing unit 80 is rearward from the inner side in the width direction than the first linear pressing unit 81 formed from the first compressing unit 71 to the second compressing unit 72 and the rear end of the first linear pressing unit 81. A second linear squeezing portion 82 extending toward the rear, a third linear squeezing portion 83 extending rearward from the outer side in the width direction than the rear end of the second linear squeezing portion 82, and a third linear squeezing portion 83. 4th linear pressing part 84 extended toward back from the width direction outside rather than the rear end.

  In addition, the linear pressing part 80 should just be formed in the linear shape which squeezes at least the surface sheet 10 and the absorber 30 in the thickness direction T, and continues in a predetermined direction, and can employ | adopt various structures. . For example, it can be formed by pressing or embossing, and the shape thereof may be a lattice network or a honeycomb shape.

  In the width direction W, the absorbent article 1 is disposed in the first region A1 including the center of the excretion opening contact region disposed to face the excretion port of the wearer, and on both sides in the width direction from the first region A1. The second region A2 and the third region A3 disposed on both sides in the width direction with respect to the second region A2.

  In the longitudinal direction L, the absorbent article 1 has a central region B1 including the center of the excretory opening contact region disposed to face the excretion port of the wearer, and a front region B2 disposed in front of the central region. And a rear region B3 disposed rearward of the central region.

  The center of the excretion opening contact area is the center in the longitudinal direction L and the width direction W of the area where the wearer's excretion opening comes into contact. For example, in the absorbent article 1 having the wing portions 43 and 44, the center in the longitudinal direction L of the wing portions 43 and 44 is the center in the longitudinal direction L of the excretory opening contact region. Moreover, in the absorbent article 1 which does not have the wing parts 43 and 44, the position where the length dimension of the width direction of an absorber is the shortest becomes the center of the longitudinal direction of an excretion opening | mouth contact | abutting area | region.

  The absorber core 31 is disposed in the first region A1. In the first region A1, a first compression portion 71 is formed over the entirety, in which the absorber 30 is compressed in the thickness direction. The 1st compression part 71 is arrange | positioned in the center in the width direction of 1st area | region A1. In the longitudinal direction L, the 1st compression part 71 is arrange | positioned only at center area | region B1, and is not arrange | positioned at the front side area | region B2 and the rear side area | region B3. 1st area | region A1 becomes an area | region in which the 1st compression part which compressed the absorber in the thickness direction was formed. The first region is configured to have a higher density than the region of the absorbent body where the compression portion is not formed.

  In 2nd area | region A2, the 2nd compression part 72 which compressed the absorber 30 to the thickness direction T, and the linear pressing part 80 which compressed the absorber 30 and the surface sheet 10 to the thickness direction T are formed. . In the longitudinal direction L, the 2nd compression part 72 is arrange | positioned ranging over the front side area | region B2 and the rear side area | region B3 centering on the center area | region B1. 2nd area | region A2 becomes an area | region in which the 2nd compression part 72 which compressed the absorber in the thickness direction was formed.

  The third region A3 is a region on the outer side in the width direction than the second region. The third region A3 is an uncompressed region where the absorber 30 is not compressed in the thickness direction T. That is, the linear pressing part 80 and the compression part 70 are not formed in 3rd area | region A3. Therefore, 3rd area | region A3 is bulkier than the 1st compression part of 1st area | region A1, and the 2nd compression part of 2nd area | region A2, and the density of the absorber 30 in 3rd area | region A3 is in 1st area | region A1. It is lower than the density of the absorber 30 and lower than the density of the absorber 30 in the second region A2.

  The third region A3 is a region where the density of the absorber 30 is lower than the density of the absorber 30 in the first region A1 and lower than the density of the absorber 30 in the second region A2. For example, the concept includes a region where the absorber 30 is compressed in the manufacturing process of the absorber 30.

  Since 1st area | region A1 containing the center of an excretion opening | mouth contact | abutting area | region has compressed the absorber 30, compared with the area | region where the absorber 30 is not compressed, the absorber shape at the time of absorbing a bodily fluid can be suppressed. . Therefore, the dispersion | variation in the distance of the surface sheet 10 and the absorber 30 can be suppressed, and the fall of the absorption performance at the time of absorbing a bodily fluid can be suppressed. Therefore, it becomes easy to maintain absorption performance for a long time.

  On the other hand, on the outer side in the width direction than the first region A1 of the absorbent body 30, a second region A2 in which the compression portion 70 and the linear pressing portion 80 are formed is provided. The body fluid absorbed in the first region A1 can be held in the second region A2, and the side leakage of the body fluid can be prevented.

  Furthermore, a third region having a lower density than the first region A1 and the second region A2 is provided on the outer side in the width direction of the second region A2. The absorbent body in the third region has a lower density than the first region A1 and the like, and is easily deformed when the wearer's legs and the like hit both side portions in the width direction of the absorbent body. Therefore, it is possible to reduce resistance to the wearer when pressed from the outer side in the width direction to the inner side in the width direction by the wearer's legs, etc., to improve the wearer's wearing feeling, and to improve fit. it can. Furthermore, since the density of the third region is lower than that of the second region, the body fluid drawn into the second region is difficult to move to the third region side. By providing the third region on both sides in the width direction of the second region, it is possible to prevent side leakage of body fluid.

  Further, the second region A2 passes from the center intersection point EP that passes through the center of the excretory opening contact region and intersects the center virtual line EL along the width direction, toward the outer side in the longitudinal direction of the absorbent article. It has a wide curved shape.

  A wearer's leg exists in the width direction outer side with respect to the excretion opening | mouth contact | abutting area | region, and the shape of the leg is the curve shape which becomes convex toward the width direction inner side. The second region A2 is formed in a curved shape that spreads outward in the width direction from the first intersection to the outer side in the longitudinal direction of the absorbent article. Can be improved.

  In the present embodiment, the shape of the second region A2 is a curved shape that spreads outward in the width direction from the center intersection point EP toward the outer side in the longitudinal direction of the absorbent article, but is not limited to this configuration. Specifically, the shape of the second region A2 may be, for example, a linear shape extending in the longitudinal direction, or an ellipse or a rectangle extending in the longitudinal direction.

  Furthermore, the length in the width direction of the second region A2 is configured to be longer than the length in the width direction of the first linear compressed portion 81 formed in the second region. The linear pressing part 80 can be a deformation base point when receiving a lateral pressure between the crotch. However, the linear pressing part 80 is compressing from the surface sheet 10 to the absorber 30, and the rigidity of the part in which the linear pressing part 80 was formed is high compared with the area | region where only the absorber 30 was compressed. Become. Therefore, when the width | variety of the linear pressing part 80 becomes wide, the rigidity of the whole absorber will become high and there exists a possibility that a feeling of attachment may deteriorate.

  Therefore, by making the width of the second region A2 longer than the width of the first linear compressed portion 81, the width of the first linear compressed portion 81 is shortened while clearly providing the deformation base point by the second region A2. It can suppress that rigidity becomes high too much.

  In addition, in this Embodiment, although the width | variety of 2nd area | region A2 is longer than the width | variety of the 1st linear pressing part 81, it is not limited to this structure. Specifically, the width of the second region A <b> 2 may be the same as the width of the first linear compressed portion 81, or may be shorter than the width of the first linear compressed portion 81.

  The length in the longitudinal direction L of the second region A2 is longer than the length in the longitudinal direction L of the first region A1. 1st area | region A1 should just be provided in the excretion mouth vicinity where a bodily fluid is most easy to be discharged | emitted. On the other hand, since 2nd area | region A2 becomes a base point of a deformation | transformation, it is desirable to be provided along L in the longitudinal direction to the crotch vicinity. Therefore, by forming the second region A2 longer in the longitudinal direction than the first region A1, it is easier to fit the body while ensuring the absorption performance.

  In the present embodiment, the length in the longitudinal direction of the second region A2 is longer than the length in the longitudinal direction of the first region A1, but is not limited to this configuration. Specifically, the length in the longitudinal direction of the second region A2 may be the same as the length in the longitudinal direction of the first region A1, or may be shorter than the length in the longitudinal direction of the first region A1. Also good.

  The first width direction virtual line EW1 that passes through the front end portion of the first region A1 and extends in the width direction W and the second width direction virtual line that passes through the rear end portion of the first region A1 and extends in the width direction W. The linear pressing part 80 formed between EW2 is the curve shape along 2nd area | region A2.

  The first area A1 includes the center of the excretory opening contact area, and is the area where the absorber 30 is most desired to be fitted to the body. By making the linear pressing part 80 located in the width direction outer side from this 1st area | region A1 into the curve shape along 2nd area | region A2, a deformation | transformation base point is provided along the external shape of a leg, and the absorber 30 is a body. Can be fitted.

  In addition, in this Embodiment, although the linear pressing part located in the width direction outer side from 1st area | region A1 among the 1st linear pressing parts 81 is made into the shape along 2nd area | region A2, this structure Not limited to.

  A fourth region A4 is provided inside the second region A2 in the width direction and behind the first region A1 in the longitudinal direction. The fourth region A4 is a non-compressed region where the absorber 30 is not compressed in the thickness direction. That is, the linear compression part 80 and the compression part 70 are not formed in 4th area | region A4. Therefore, 4th area | region A4 is bulkier than the 1st compression part of 1st area | region A1, and the 2nd compression part of 2nd area | region A2, and the density of the absorber in a 4th area | region is an absorber in 1st area | region A1. And the density of the absorber in the second region A2 is lower.

  In addition, if the density of the absorber 30 is lower than the density of the absorber 30 in the first region A1 and the density of the absorber 30 in the second region A2 is lower than the density of the absorber 30 in the fourth region A4. For example, the concept includes a region where the absorber is compressed in the manufacturing process of the absorber 30.

  Moreover, since the density of the absorber in the second region A2 is higher than the density of the absorber in the fourth region A4, when a force is applied from the outer side in the width direction to the inner side in the width direction, the second region A2 is deformed from the base point. be able to. Since the density of the absorber 30 in the fourth region A4 is lower than the density of the absorber 30 in the first region A1, the absorber 30 disposed behind the first region A1 can be easily deformed, and the absorber 30 Can be placed along the body. For example, when 4th area | region A4 is pressed toward the width direction inner side from the width direction outer side, it deform | transforms so that 4th area | region A4 may bulge to a wearer side, and is located behind center area | region B1. 4th area | region A4 can be protruded to the body side, an absorber can be arrange | positioned in the clearance gap between bodies, and a back leak can be prevented.

  In the present embodiment, the fourth region A4 is formed, but the present invention is not limited to this configuration. Specifically, a region having the same density as the first region A1 or a region having a higher density than the first region A1 may be provided behind the first region A1.

  Furthermore, the density of the absorber 30 in the second region A2 is configured to be higher than the density of the absorber 30 in the first region A1. Since the density of the absorbent body 30 in the second area A2 is higher than the density of the absorbent body 30 in the first area A1, it is deformed from the second area A2 and the linear compressed portion as a base point when pressed from the outside in the width direction. Thus, the fit to the wearer can be enhanced. On the other hand, when the density of 1st area | region A1 is too high, the drawability of a bodily fluid will fall. However, since the density of the second region A2 is higher than the density of the first region A1, the fit property can be improved while maintaining the body fluid drawability.

  In the present embodiment, the density of the absorber in the second region A2 is higher than the density of the absorber in the first region A1, but it is not limited to this configuration. Specifically, the density of the absorber in the second region A2 may be the same as the density of the absorber in the first region A1, or may be lower than the density of the absorber in the first region A1. For example, when manufacturing the absorbent body, the thickness of the absorbent body may be molded almost uniformly to form the first compression portion and the second compression portion, or the portion of the absorbent body corresponding to the first region may be formed. You may shape | mold so that thickness may become thick and may form a 1st compression part and a 2nd compression part so that a 1st area | region and a 2nd area | region may become the same thickness. Thus, the absorber which formed the 1st compression part and the 2nd compression part becomes higher in the density of the 1st field than the density of the 2nd field.

  Further, the density of the absorber 30 in the first region A1, the second region A2, and the third region A3 is the highest in the second region A2, then the density in the first region A1, and the density in the third region A3. Is the lowest. Further, the density of the absorber 30 in the first region A1, the second region A2, and the fourth region A4 is the highest in the second region A2, then the density in the first region A1, and the density in the fourth region A4. Is the lowest.

  In addition, the fabric weight and density of the absorber 30 can be measured with the following measuring methods, for example. In the absorbent article packaged by the packaging body, the packaging body is opened, the folded absorbent article is developed, and the thickness and area of the portion where the basis weight and density are measured are measured. Subsequently, the part which measures a fabric weight and a density is cut out from an absorbent article, and the weight of the cut-out part is measured. Next, parts other than the absorber, such as the top sheet and the back sheet, are removed from the cut out part, and the weight of the absorber is measured. The basis weight is calculated based on the weight of the absorbent body and the area of the portion where the basis weight and density are measured. The density is calculated based on the basis weight and thickness.

  The thickness can be measured by the following measurement method. Specifically, after the sample absorbent article was impregnated with liquid nitrogen and frozen, it was cut with a razor and returned to room temperature, and then it was magnified 50 times using an electron microscope (for example, KEYENCE VE7800). Measure with magnification. Here, the reason why the absorbent article of the sample is frozen is to prevent the thickness from fluctuating due to compression during cutting.

  Next, a part of manufacturing method of the absorbent article 1 according to the first embodiment will be described. In addition, about the method which is not demonstrated, the existing method can be used. The manufacturing method of an absorbent article performs a surface sheet production | generation process as a 1st step. Specifically, the surface sheet is compressed in the thickness direction T to form the surface sheet pressing portion 11. In this compression processing, for example, the surface sheet 10 is passed through an embossing roll that performs heating and pressurization, thereby forming a lattice-shaped uneven processing.

  Next, as a second step, a surface sheet joining step is performed. Specifically, the top sheet and the side sheets 41 and 42 are bonded by, for example, heat welding.

  As a third step, an absorber molding process is performed. Specifically, after the pulp as the material of the absorber is laminated by the molding drum, the laminated pulp is wrapped with a protective paper such as a tissue. Then, the absorbent body wrapped with the protective paper is compressed in the thickness direction to form a compressed portion. In addition, a reverse order may be sufficient as the order of the manufacturing process of the surface sheet of a 1st step and a 2nd step, and the absorber molding process of a 3rd step.

  In the fourth step, a joining process is performed. Specifically, the joining process which joins the absorber shape | molded in the 3rd step, and the surface sheet and side sheet which were joined in the 2nd step is performed.

  In the fifth step, a pressing process is performed. Specifically, the absorbent body 30 and the top sheet 10 are compressed in the thickness direction to form the linear compressed portion 80. At this time, since the second compression portion is formed in advance in the absorbent body 30 in the second region, it becomes difficult for the top sheet to float with respect to the absorbent body, and the linear compressed portion can be easily formed. .

  In the sixth step, a back sheet joining step is performed. Specifically, the absorber, the top sheet, and the like that form the linear compressed portion are joined to the back sheet. After joining the back sheet, a step of applying an adhesive is provided. The absorbent article which concerns on this Embodiment can be manufactured according to said process.

(Second Embodiment)
Next, an absorbent article 1A according to the second embodiment will be described with reference to FIG. In the following description of the embodiment, only the configuration different from that of the first embodiment will be described, and the description of the same configuration as that of the first embodiment will be omitted by using the same reference numerals.

  The absorbent article 1A according to the second embodiment is different in the shape of the second region A2 and the third region A3 and the shape of the linear compressed portion. 2nd area | region A2 of 1 A of absorbent articles is linear form extended in the longitudinal direction L in the width direction both sides of 1st area | region A1. The first region A1 and the second region A2 are adjacent in the width direction W. The linear pressing part 80 is a vertically long circle, and has an inner linear pressing part 85 and an outer linear pressing part 86 positioned outside the inner linear pressing part. A part of the inner linear pressing portion 85 and the outer linear pressing portion 86 is disposed in the second region A2. The third region A3 has a linear shape extending in the longitudinal direction L on both sides in the width direction of the second region A2.

(Third embodiment)
Next, an absorbent article 1B according to the third embodiment will be described based on FIG. The absorbent article 1B according to the third embodiment is different from the absorbent article 1 according to the first embodiment in the shapes of the first region A1, the second region A2, and the third region A3 and the shape of the absorber 30. ing. The linear pressing part 80 of the absorbent article 1B has the same configuration as the absorbent article 1A according to the second embodiment.

  The first region A1 of the absorbent article 1B is disposed across the central region B1 and the rear region B3. An absorber core 31 is disposed in the absorber 30 in the first region A1. Outside the first region A1 in the width direction, a third region A3 located at the width direction outer end of the absorber 30 is disposed. The length in the longitudinal direction of the third region A3 is shorter than the length in the longitudinal direction of the first region A1. In the absorbent body 30 of the absorbent article 1B, the region other than the third region is compressed in the thickness direction. The region other than the first region A1 and the third region A3 of the absorber 30 is the second region A2.

(Fourth embodiment)
Next, an absorbent article 1C according to the fourth embodiment will be described with reference to FIG. Absorbent article 1C according to the fourth embodiment is a sanitary napkin for daytime, and the front region B2 and the rear region B3 have the same shape and length.
The central region B1 of the absorbent article 1C is located at the center in the longitudinal direction of the absorbent article 1. The center of the central area B1 in the longitudinal direction L coincides with the center of the excretory opening contact area, and the center of the central area B1 in the width direction coincides with the center of the excretion opening contact area.

  The center in the longitudinal direction L of the second region A2 passes through the center in the longitudinal direction L of the absorbent article 1C and is located on the virtual line EL2 along the width direction. The shape of the second region A2 is an arc shape with the center point on the virtual line EL2. The center point is located on the outer side in the width direction than the absorber. The second region A2 has a shape that spreads outward in the width direction from the center in the longitudinal direction L toward the outside in the longitudinal direction.

  Although the contents of the present invention have been disclosed through the embodiments of the present invention as described above, it should not be understood that the descriptions and drawings constituting a part of this disclosure limit the present invention. From this disclosure, various alternative embodiments, examples, and operational techniques will be apparent to those skilled in the art.

  A1 ... first region, A2 ... second region, A3 ... third region, A4 ... fourth region, B1 ... central region, B2 ... front region, B3 ... rear region, EL ... central imaginary line, EP ... central intersection L ... Longitudinal direction, T ... Thickness direction, W ... Width direction, 1, 1A, 1B, 1D ... Absorbent article, 10 ... Surface sheet, 11 ... Surface sheet pressing part, 20 ... Back sheet, 30 ... Absorber, 31 ... Absorber core, 41, 42 ... Side sheet, 43, 44 ... Wing part, 50 ... Adhesive, 60 ... Hot melt adhesive, 70 ... Compression part, 71 ... First compression part, 72 ... Second compression part 73 ... 3rd compression part, 80 ... Linear compression part, 81 ... 1st linear compression part, 82 ... 2nd linear compression part, 83 ... 3rd linear compression part, 84 ... 4th linear compression part 85 ... Inside linear pressing part, 86 ... Outer linear pressing part, 9 ... release sheet

Claims (6)

A liquid-permeable top sheet, a liquid-impermeable back sheet, and an absorber disposed between the top sheet and the back sheet, and the absorbent body in the thickness direction of the absorbent article. An absorptive article in which a compressed compressed portion and a linear compressed portion obtained by compressing the topsheet and the absorber in the thickness direction in the thickness direction are formed,
The absorbent body includes a center of an excretion opening contact area disposed to face a wearer's excretion opening, and the compression article is formed in the first area, and the absorbent article is more than the first area. A second region disposed on both outer sides in the width direction and having the compression portion formed thereon, and a third region disposed on both outer sides in the width direction than the second region,
The linear compressed portion is formed extending in the longitudinal direction of the absorbent article in the second region,
The density of the absorber in the third region, the lower than the density of the absorber in the first region, and rather lower than the density of the absorber in the second region,
The absorbent article in which the density of the absorber in the second region is higher than the density of the absorber in the first region.   The absorbent article according to claim 1, wherein a length of the second region in the width direction is longer than a length of the linear compressed portion in the width direction. The absorbent article according to claim 1 or 2 , wherein a length of the second region in the longitudinal direction is longer than a length of the first region in the longitudinal direction. A fourth region is provided on the inner side in the width direction than the second region and behind the first region in the longitudinal direction,
The absorbent article according to claim 3 , wherein the density of the absorber in the fourth region is lower than the density of the absorber in the first region and lower than the density of the absorber in the second region. . The second region passes through the center of the excretory opening contact region and crosses the central imaginary line along the width direction, toward the outer side in the longitudinal direction of the absorbent article and toward the outer side in the width direction. The absorptive article according to claim 4 which is the curve shape which spreads. Between a first width direction imaginary line that passes through the front end of the first region and extends in the width direction, and a second width direction imaginary line that passes through the rear end of the first region and extends in the width direction. The absorptive article according to claim 5 in which said linear pressing part formed in the shape of a curve along said 2nd field.

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