JP6068233B2 - Absorbent articles - Google Patents

Description

  The present invention relates to an absorbent article including a liquid-permeable top sheet, a liquid-impermeable back sheet, and an absorber provided between the top sheet and the back sheet.

  Conventionally, in absorbent articles, such as sanitary napkins, what formed the pressing part which squeezed the liquid-permeable surface sheet and the absorber is known widely. Moreover, the thing of various shapes is proposed also about a pressing part.

  For example, in a central region including the center of the excretory opening contact region that should be disposed to face the excretion port of the wearer, squeezed in a groove shape extending in the front-rear direction on both sides in the width direction with respect to the center in the width direction An absorptive article in which a portion (hereinafter referred to as a groove-like pressing portion) is arranged has been proposed (see, for example, Patent Document 1).

  Further, in such an absorbent article, in the rear region located on the rear side in the front-rear direction with respect to the central region, the groove compressed into a groove shape that extends in the width direction of the absorbent article and bends toward the rear side in the front-rear direction. A squeezed portion is arranged.

  Thus, in this absorbent article, it is supposed that the bodily fluid leaked from a wearer can be prevented by forming a some groove-shaped pressing part.

Japanese Patent Laying-Open No. 2007-7456 (FIG. 9)

  However, the above absorbent article has the following problems.

  In the absorptive article indicated by patent documents 1, body fluid which flows into a wearer's back side is controlled only by arranging a plurality of slot-like pressing parts prolonged in the width direction in a back field located in a wearer's back side. Since it is comprised so that rigidity may become high by the said several groove-shaped pressing part, it became easy to give a wearer a discomfort. In particular, when the wearer is in the supine state, the rear region of the absorbent article is in close contact with the wearer. Therefore, in the rear region, the groove-like compressed portion extending in the width direction is brought into close contact with the wearer, and there is a problem in that the influence on the wearer is unpleasant.

  Thus, in the absorbent article which concerns on a prior art, there existed a problem that the effect which suppresses the liquid leak in a wearer's back side, and the effect which suppresses discomfort with respect to a wearer were not enough.

  Then, this invention is made | formed in view of the above-mentioned subject, and it aims at providing the absorbent article which improved the discomfort with respect to a wearer, suppressing a bodily fluid leak.

Absorbent article according to the present invention (absorbent article 1) is provided with a longitudinal direction (front-rear direction L), and a width direction perpendicular to the longitudinal direction (the width direction W), a liquid-permeable topsheet (surface Sheet 10), a liquid-impermeable back sheet (back sheet 20), and an absorbent article (absorber 30) provided between the top sheet and the back sheet, The absorbent article has a central region (central region CA) located in the center in the front-rear direction, a front region (front region FA) located on the front side of the central region, and a rear side of the central region. It has a rear region (rear region BA) located, and a groove-like pressing portion (groove-like pressing portion 80) is formed by pressing the top sheet and the absorber into a groove shape , and the top sheet And a plurality of squeezed parts (squeezed into the absorbent body) Is constituted by Jo compressing portion 90), said plurality of rows compressed portions arranged in rows a plurality of point-like compression portions (rows compressing portion 100) is formed, the groove-like compressed portion is at least the in the central region, each of both sides of the width direction in the width direction reference widthwise center line passing through the center (the widthwise center line WCL) of said absorbent article, are arranged so as to extend along the longitudinal direction The distance (distance PA) in the front-rear direction of each of the plurality of columnar pressing units is greater than the interval (PB) of each of the plurality of point-shaped pressing units constituting the plurality of columnar pressing units. Widely, the plurality of columnar pressing parts are arranged at least in the rear region, and each of the plurality of columnar pressing parts is arranged such that the array of the plurality of pointed pressing parts faces the rear side in the front-rear direction. Arranged to bend It was the subject matter that has a bent portion (bent portion 110).

  According to the present disclosure, it is possible to provide an absorbent article that improves body discomfort while suppressing body fluid leakage.

It is the top view seen from the skin contact surface side of the absorptive article concerning an embodiment. It is a schematic cross section of the XX cross section shown in FIG. It is a schematic cross section of the YY cross section shown in FIG. It is the partially expanded plan view seen from the skin contact surface side of the absorbent article which concerns on embodiment. It is the partially expanded plan view seen from the skin contact surface side of the absorbent article which concerns on the modification of embodiment.

  With reference to drawings, the absorbent article 1 which concerns on embodiment is demonstrated. 1 is a plan view of the absorbent article, FIG. 2 is a cross-sectional view taken along line XX shown in FIG. 1, and FIG. 3 is a cross-sectional view taken along line YY shown in FIG. It is. 4 is a partially enlarged plan view of FIG. In addition, the absorbent article 1 according to the present embodiment has a front-rear direction L and a width direction W orthogonal to the front-rear direction L.

  The absorbent article which concerns on embodiment is the sanitary napkin for nights, for example. Therefore, the absorbent article according to the present embodiment is configured such that the rear area BA located on the back side of the wearer is longer than the front area FA located on the front side of the wearer in the front-rear direction L (longitudinal direction). Has been.

  In addition, the area | region between a pair of wing parts mentioned later is center area | region CA containing the excretion opening | mouth contact | abutting area | region where a wearer's excretion opening contacts. Specifically, a central region CA is provided between a front root CA1 in the front-rear direction of the pair of wing portions 43, 44 and a rear root CA2 in the front-rear direction of the pair of wing portions 43, 44. ing. The front side of the central area CA is the front area FA, and the rear side of the central area CA is the rear area BA.

  In the present embodiment, a night sanitary napkin is described as an example, but the absorbent article according to the present invention can also be applied to a day sanitary napkin. In the sanitary napkin for daytime, the lengths of the front area FA located on the front side of the wearer in the front-rear direction L and the rear area BA located on the rear side of the wearer are substantially the same.

  As shown in FIGS. 1 to 3, 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.

  The absorbent article 1 has a pair of wing portions 43 and 44 extending outward in the width direction W on both sides of the absorbent width direction W in a 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 top sheet may be composed of at least one sheet. For example, a second sheet may be provided between the top sheet 10 and the absorber 30.

  Examples of natural fibers include cellulose such as pulverized pulp and cotton. Examples of the chemical fiber include regenerated cellulose such as rayon and fibril rayon, semi-synthetic cellulose such as acetate and triacetate, thermoplastic hydrophobic chemical fiber, and thermoplastic hydrophobic chemical fiber subjected to hydrophilic treatment.

  Examples of the thermoplastic hydrophobic chemical fibers include single fibers such as polyethylene (PE), polypropylene (PP), and polyethylene terephthalate (PET), fibers obtained by graft polymerization of PE and PP, and composite fibers such as a core-sheath structure. As mentioned.

  In particular, for non-woven fabrics, web forming may be performed by any of dry methods (card method, spun bond method melt blown method, air laid method, etc.), wet methods, or a combination of a plurality of them. Examples of bonding methods include thermal bonding, needle punching, chemical bonding, and the like, but are not particularly limited to these methods. Moreover, you may use the spunlace formed in the sheet form by the hydroentanglement method.

  As the perforated plastic sheet, a perforated sheet of a thermoplastic resin such as PE, PP, and PET, a porous foam material, or the like can be used. Moreover, about these, it is also preferable to make it cloudy by mixing the filler which consists of a titanium oxide, a calcium carbonate, etc. in the range of 0.5 to 10% as needed. Moreover, you may use the perforated film which opened the film which consists of the said thermoplastic resin by perforation, heat embossing, or machining. The perforated film may be used as a composite sheet with a nonwoven fabric.

  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 discomfort when worn. For example, a film obtained from a basis weight of 15 to 30 g / m <2> mainly composed of a low density polyethylene (LDPE) resin is used. Can be used. 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. Examples include pulverized pulp, cellulose such as cotton, regenerated cellulose such as rayon and fibril rayon, semi-synthetic cellulose such as acetate and triacetate, particulate polymer, fibrous polymer, thermoplastic hydrophobic chemical fiber, or hydrophilic treatment. The thermoplastic hydrophobic chemical fibers, air bonded pulp treated with chemical bonds, etc. can be used alone or in combination.

  The method for forming these materials into the absorbent body is not particularly limited, but for example, a sheet formed by an airlaid method, a meltblown method, a spunlace method, a papermaking method or the like is used. Moreover, a cellulose foam, a synthetic resin continuous foam, etc. can also be used as an absorber. Furthermore, it is also possible to use what was formed into an absorber after pulverizing the foam or the sheeted material. Among these, pulp is mixed in the range of 80 to 100%, particulate polymer is mixed in the range of 20 to 0%, and coated with, for example, tissue, and then sheeted by embossing to have a basis weight of 100 to 2000 g / m2, 1 to 50 mm The absorber which has the bulk of this is mentioned. The embossing is for preventing the shape of the absorbent body from being lost, and the embossed area ratio is in the range of 10 to 100%, preferably in the range of 30 to 80%. In addition, the structure of the absorber 30 is not limited to this. The absorber 30 may not be covered with the tissue and may not be embossed.

  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 / m2) and wrapping it with a tissue.

  The absorbent body 30 according to the present embodiment is configured by wrapping a pulp obtained by laminating cotton-like pulp, synthetic pulp or the like at a basis weight of about 100 to 300 g / m 2 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.

  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.

  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, an adhesive (not shown) is applied to the surface in contact with the undergarment in a plurality of regions. The adhesive is intermittently disposed along the front-rear direction L on the back surface side of the absorber. The adhesive is also provided on the surface in contact with the undergarment in the wing part 43 and the wing part 44. In a state before use, the adhesive is in contact with a release sheet (not shown). The release sheet prevents the adhesive from deteriorating before use. And a peeling sheet peels by a wearer at the time of use.

  In addition, in the absorbent article which does not have a peeling sheet, 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 absorbent article 1 according to the present embodiment, a groove-like pressing portion 80 obtained by pressing the topsheet 10 and the absorbent body 30 into a groove shape, and a plurality of points obtained by pressing the topsheet 10 and the absorbent body 30 in a dot shape. The shape pressing part 90 is arrange | positioned. Moreover, the absorbent article 1 includes a plurality of columnar squeezed portions 90 configured by a plurality of point-like squeezed portions 90 and arranged in a row along the width direction W. Yes.

  The groove-like pressing part 80 and the plurality of point-like pressing parts 90 are formed by pressing the surface sheet of the absorbent article 1 and the absorbent body 30.

  The groove-shaped compressed portion 80 is disposed so as to extend along the front-rear direction L on each side of the width direction W with respect to the width direction center line WCL at least in the central region CA. Further, at least a pair of the groove-like compressed parts 80 are arranged along the front-rear direction L.

  In the present embodiment, as the groove-like pressing part 80, an inner groove-like pressing part 81 and an outer groove-like pressing part 82 (first groove-like pressing part) are arranged.

  The inner groove-shaped pressing part 81 is formed in a continuous annular shape so as to surround the center of the central area CA. Specifically, the inner groove-shaped squeezing portion 81 is provided around the central area CA so as to surround the center C of the excretory opening contact area that is disposed to face the excretion opening of the wearer. In addition, the inner groove-shaped compressed portion 81 is disposed in front of the plurality of row-shaped compressed portions 100 in the front-rear direction L.

  In addition, the center C of the excretion opening contact area coincides with the center in the longitudinal direction and the width direction of the central area CA where the wearer's excretion opening comes into contact. For example, in an absorbent article having a wing portion, the center in the longitudinal direction of the wing portion is the center in the longitudinal direction of the central region CA. Moreover, in the absorbent article which does not have a wing part, the position where the length dimension of the width direction of an absorber is the shortest is good also as the center of the longitudinal direction of center area | region CA. Or the position where the length dimension of the width direction of the absorbent article 1 is the shortest may be the center in the longitudinal direction of the central region CA. The excretory opening contact region is included in a region that contacts the wearer's crotch, and is located between the wearer's legs.

  The outer groove-shaped squeezing part 82 is arranged outside the inner groove-shaped squeezing part 81 in the width direction W in the central region CA. In addition, the outer groove-shaped pressing part 82 is formed so as to surround both sides in the width direction W of the plurality of columnar pressing parts 100 and the rear side in the front-rear direction L of the plurality of columnar pressing parts 100.

  Moreover, as shown in FIGS. 1 and 4, the plurality of columnar squeezed portions 100 are disposed at least in the rear area BA. In addition, the line-shaped pressing part 100 may be arrange | positioned also in front area | region FA.

  1 and 4, the region where the line-shaped pressing unit 100 is arranged is surrounded by a two-dot chain line. The alternate long and two short dashes line does not constitute the line-shaped squeezing unit 100 but indicates a region where the line-shaped squeezing unit 100 is arranged for convenience. Furthermore, the row-shaped pressing unit 100 is not configured by the entire region surrounded by the chain line, but is configured by a plurality of point-shaped pressing units 90 in the region surrounded by the two-dot chain line. It should be noted that there are.

  In the absorbent article 1 according to the present embodiment, a plurality of columnar squeezed portions 100 are formed. Specifically, as shown in FIG. 4, in the absorbent article 1, as the line-shaped compressed part 100, the first line-shaped compressed part 100 a and the rear side in the front-rear direction L than the first line-shaped compressed part 100 a are arranged. The 2nd line-shaped pressing part 100b arrange | positioned and the 3rd line-shaped pressing part 100c arrange | positioned in the back side of the front-back direction L rather than the 2nd line-shaped pressing part 100b are formed.

  Each of the plurality of columnar pressing parts 100 has a bent part 110 arranged so that the arrangement of the plurality of pointed pressing parts 90 is bent toward the rear side in the front-rear direction L. Specifically, each of the first row-shaped compressed portion 100a, the second row-shaped compressed portion 100b, and the third row-shaped compressed portion 100c has a bent portion 110. In the present embodiment, the bent portion 110 is disposed on the center line WCL in the width direction W.

  In the present embodiment, the first row pressing unit 100a, the second column pressing unit 100b, and the third column pressing unit 100c have the same configuration except for the position in the front-rear direction L. Therefore, each is simply described as simply the row-shaped pressing unit 100. Further, in the present embodiment, the absorbent article 1 will be described by taking as an example the case where the absorbent article 1 has three of the first row-shaped compressed portion 100a, the second row-shaped compressed portion 100b, and the third row-shaped compressed portion 100c. However, the number of the line-shaped pressing parts 100 is not limited to this.

  In the present embodiment, the distance PA in the front-rear direction L of each of the plurality of columnar pressing units 100 is wider than the interval PB of each of the plurality of point-like pressing units 90 constituting the plurality of columnar pressing units 100. It is formed to become. Specifically, as shown in FIG. 4, the distance PA between the first row-shaped compressed portion 100 a and the second row-shaped compressed portion 100 b is the distance between each of the plurality of point-shaped compressed portions 90 constituting the row-shaped compressed portion 100. It is wider than the interval PB. In addition, distance PA is the front-back direction L between several dot-shaped pressing parts 90 which comprise the 1st line-shaped pressing part 100a, and several dot-like pressing parts 90 which comprise the 2nd line-shaped pressing part 100b. It is a center distance between the dotted | punctate pressing parts 90 nearest. In addition, the space | interval PB is the center distance between the dotted | punctate pressing parts 90 adjacent to the nearest in the several dotted | punctate pressing parts 90 which comprise the row-shaped pressing part 100. FIG.

  Moreover, it is preferable that distance PA in the front-back direction of the 1st row-shaped pressing part 100a and the 2nd row-shaped pressing part 100b is 10-40 mm. This is because if the distance PA is less than 10 mm, the rigidity in the rear area BA may be too high. On the other hand, when the distance PA is larger than 40 mm, the rigidity between the first row-shaped compressed portion 100a and the second row-shaped compressed portion 100b is lowered, and there is a possibility that twisting occurs. Furthermore, body fluid may leak due to the twist.

  Moreover, in this embodiment, distance PA in the front-back direction L of the 1st row-shaped pressing part 100a and the 2nd row-shaped pressing part 100b, and the front-back of the 2nd row-shaped pressing part 100b and the 3rd row-shaped pressing part 100c The distance PA in the direction L is the same. That is, the 1st row-shaped pressing part 100a, the 2nd row-shaped pressing part 100b, and the 3rd row-shaped pressing part 100c are arrange | positioned in the front-back direction L substantially parallel for every fixed space | interval.

  In this embodiment, the line-shaped pressing part 100 has one series part 101 arranged so that a part of the plurality of point-like pressing parts 90 extends to one side in the width direction W with respect to the bent part 110, and a plurality of And the other serial portion 102 arranged so as to extend to the other side in the width direction W.

  Here, as shown in FIG. 4, the third row pressing unit 100 c will be described as an example. The third row-shaped squeezed portion 100 c has one series portion 101 extending to one side in the width direction W and the other series portion 102 extending to the other side in the width direction W with the bent portion 110 as a reference. One serial portion 101 and the other serial portion 102 extend in a direction intersecting the width direction W.

  In the present embodiment, the bent portion 110 is formed by the intersection of one series portion 101 and the other series portion 102. In other words, the bent portion 110 is a portion where the straight line is bent when a straight line along the plurality of point-like compressed portions 90 is defined. Further, in the present embodiment, a case where the bent portion 110 has a shape that bends at a predetermined angle will be described as an example. That is, in this embodiment, the line-shaped pressing part 100 is formed in V shape in planar view. The bent portion 110 may have a gently curved shape. That is, in this embodiment, the line-shaped pressing part 100 may be formed in a U-shaped shape in plan view.

  Moreover, as shown in FIG. 4, in the 3rd row-shaped pressing part 100c, the straight line La along the direction where the one serial part 101 extends, and the straight line Lb along the direction where the other serial part 102 extends are predetermined. It arrange | positions so that the angle (theta) may be comprised.

  Although omitted in the example of FIG. 4, the first row-shaped compressed portion 100 a and the second row-shaped compressed portion 100 b also have a straight line La along the direction in which one series portion 101 extends and the other series portion 102. The straight line Lb along the direction in which the line extends extends at a predetermined angle θ.

  Moreover, in this embodiment, the some dotted | punctate pressing part 91 is formed in the front area | region FA. Specifically, a plurality of point-like compressed parts 91 are arranged in a state of being dispersed in an inner region of the outer groove-shaped compressed part 82. In the present embodiment, the plurality of point-like pressing parts 90 formed in the rear area BA and the plurality of point-like pressing parts 91 formed in the front area FA are the outer groove-like pressing part 82 and the inner groove-like shape. Located in the area between the pressing part 81.

  Here, in the present embodiment, only the plurality of point-like pressing parts 90 that are a part of the plurality of point-like pressing parts 90 and 91 formed in the absorbent article 1 constitute the row-like pressing part 100. . That is, the plurality of point-like pressing parts 91 do not constitute the row-like pressing part 100. Therefore, in the present embodiment, the plurality of point-like pressing parts 90 and the plurality of point-like pressing parts 91 are distinguished in terms of whether or not to form the row-like pressing part 100.

  Moreover, in this embodiment, the shape of the dotted | punctate pressing part 90 and the dotted | punctate pressing part 91 is mentioned as an example, and the case where it is circular is demonstrated. In addition, the shape of the point-like pressing part 90 and the point-like pressing part 91 is not particularly limited. For example, in addition to a circle, an ellipse, a triangle, for example, a regular triangle, a square, a rectangle, a regular pentagon, a star, and a heart It may be a shape.

  Moreover, it is preferable that the diameter of the bottom part of the dotted | punctate pressing parts 90 and 91 is 1-4 mm. When the diameter of the bottom part of the dotted | punctate pressing parts 90 and 91 is smaller than said value, when forming the dotted | punctate pressing parts 90 and 91 in the absorber 30 with a high fabric weight, there is too much thickness of the absorber 30 and surface. The sheet 10 is torn and the point-like compressed parts 90 and 91 are hardly formed. On the other hand, when the diameter of the bottom part of the point-like pressing parts 90 and 91 is larger than the above value, the pressure at the time of pressing is insufficient, and the outlines of the point-like pressing parts 90 and 91 are not easily formed. Moreover, if the outline of the dotted | punctate pressing parts 90 and 91 is not formed clearly, it will become difficult to give the image of a vent hole with respect to a wearer.

(Method for manufacturing absorbent article)
Next, a part of manufacturing method of the absorbent article 1 according to the present 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 sheet | seat production | generation process as a 1st step. Next, as a second step, a sheet joining process is performed. Specifically, the top sheet 10 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, the absorber 30 is formed by molding pulp as a material of the absorber with a molding drum. Note that the order of the sheet generation process in the first step and the second step and the absorbent body molding process in the third step may be reversed.

  In the fourth step, a joining process is performed. Specifically, the joining process which joins the absorber 30 shape | molded in the 3rd step, and the surface sheet and side sheet which were joined in the 2nd step is performed.

  5th step WHEREIN: The formation process of the groove-shaped pressing part 80 and the dotted | punctate pressing part 90 is performed. Specifically, the top sheet 10 and the absorbent body 30 are compressed in the thickness direction to form the groove-like pressing part 80 and the point-like pressing part 90. In addition, the line-shaped pressing part 100 is formed by forming the several point-like pressing part 90. FIG.

  At this time, the point-like pressing part 90 may be formed by simultaneously performing the low-pressure pressing process and the high-pressure pressing process. According to this, while forming the outline part of the dotted | punctate pressing part 90 by a low pressing process, the high pressing part formed by a high pressing process is formed inside a contour part. Furthermore, the end of the high-pressure squeezed part formed by the high-pressure squeezing process is arranged so as to contact the contour formed by the low-pressure squeezing process, so that the shape (for example, a lattice shape) of the high-pressure squeezed part can be hardly lost. According to this, even if it is a case where the absorbent article 1 is used for a long time, the shape of the dotted | punctate pressing part 90 is ensured and the surface sheet 10 and the absorber 30 can be hard to peel.

  In the sixth step, a back sheet joining step is performed. Specifically, the absorbent body 30 and the top sheet 10, the side sheets 41 and 42, and the back sheet 20 that have formed the groove-like pressing part 80 and the point-like pressing part 90 are joined by application of a hot melt adhesive. To do.

  Then, the process of apply | coating the adhesive agent as a slip prevention material to the non-skin contact side (clothing contact surface side) of the back surface sheet 20, a folding process, and the packaging process of the absorbent article 1 are performed. The absorbent article which concerns on this Embodiment can be manufactured according to said process.

(Function and effect)
In the absorbent article 1 according to the present embodiment, a row-shaped compressed portion 100 configured by arranging a groove-shaped compressed portion 80 and a plurality of point-shaped compressed portions 90 in a row along the width direction W is provided. Is provided. In the present embodiment, as the groove-like pressing part 80, an inner groove-like pressing part 81 and an outer groove-like pressing part 82 are provided.

  Moreover, the inner side groove-shaped pressing part 81 and the outer side groove-shaped pressing part 82 are arrange | positioned so that it may extend along the front-back direction L at least in center area | region CA. Here, the center area CA includes the excretion opening contact center C and is an area where body fluid is excreted from the wearer. In the absorbent article 1, the inner groove-shaped compressed portion 81 and the outer groove-shaped compressed portion 82 are arranged so as to extend along the front-rear direction L in the central region CA. It is possible to prevent body fluid from leaking outside the W.

  Moreover, in the absorbent article 1, a plurality of columnar squeezed portions 100 configured by arranging a plurality of point-like compressed portions 90 in a row along the width direction W are arranged in the rear region BA. . Moreover, in the absorbent article 1 which concerns on this embodiment, the 2nd which is arrange | positioned as the line-shaped pressing part 100 in the back side of the front-back direction L rather than the 1st line-shaped pressing part 100a and the 1st line-shaped pressing part 100a. The line-shaped pressing part 100b and the 3rd line-shaped pressing part 100c arrange | positioned in the back side of the front-back direction L rather than the 2nd line-shaped pressing part 100b are arrange | positioned.

  Thereby, in the back area BA, the bodily fluid flowing toward the rear in the front-rear direction L is absorbed by the plurality of point-like pressing parts 90 constituting the columnar pressing part 100 (for example, the first columnar pressing part 100a). The body fluid that has not been absorbed flows backward through the gaps of the plurality of point-like compressed parts 90. Moreover, since this bodily fluid is absorbed by the line-shaped pressing part 100 (for example, 2nd line-shaped pressing part 100b) in the back of the front-back direction L, the quantity of the bodily fluid which flows back in the front-back direction L, and the advancing speed of a body fluid The diffusion in the width direction W can also be reduced. Therefore, according to such an absorbent article 1, body fluid leakage in the rear area BA can be prevented.

  Moreover, in the absorbent article 1 which concerns on this embodiment, the distance PA in the front-back direction L of the 1st row-shaped pressing part 100a and the 2nd row-shaped pressing part 100b is the 1st row-shaped pressing part 100a and the 2nd row shape. It is wider than the interval PB of each of the plurality of point-like pressing parts 90 constituting the pressing part 100b. Thereby, when the bodily fluid which flows to the back of the front-back direction L reaches | attains the 1st row-shaped pressing part 100a, this bodily fluid becomes easy to be absorbed by the several point-like pressing part 90 which comprises the 1st row-shaped pressing part 100a. . That is, the body fluid is likely to flow to the second row-shaped compressed portion 100b after being absorbed by all the plurality of point-shaped compressed portions 90 that constitute the first row-shaped compressed portion 100a. Therefore, according to this absorbent article 1, while being able to absorb a bodily fluid efficiently, the spreading | diffusion in the front-back direction of a bodily fluid can be suppressed.

  Moreover, each of the 1st row-shaped pressing part 100a, the 2nd row-shaped pressing part 100b, and the 3rd row-shaped pressing part 100c has the bending part 110 bent toward the back side of the front-back direction L. Thereby, in such an absorbent article, when the bodily fluid flowing toward the rear side in the front-rear direction reaches the first row-shaped compressed portion 100a, for example, the bodily fluid is bent through the plurality of point-shaped compressed portions 90. It collects toward the part 110 and becomes difficult to diffuse in the width direction. Thereby, in the rear area BA, leakage of body fluid on the rear side in the front-rear direction L can be suppressed, and leakage of body fluid in the width direction W can also be prevented.

  Furthermore, in such an absorbent article 1, in the rear area BA, since the line-shaped compressed parts 100 are configured by arranging a plurality of dot-shaped compressed parts 90 along the width direction W, grooves are formed along the width direction W. The rigidity in the rear area BA can be suppressed as compared with the case where only a plurality of groove-shaped compressed parts are arranged. That is, according to the absorbent article 1, for example, even when the wearer is in a supine state and the rear area BA of the absorbent article 1 is in close contact with the wearer, only the plurality of groove-like compressed parts are arranged. Compared with the case where it does, the discomfort given to a wearer due to rigidity can be suppressed.

  Thus, according to the absorbent article which concerns on this invention, the discomfort with respect to a wearer can be improved, suppressing a bodily fluid leak.

  In the absorbent article 1 according to the present embodiment, the bent portion 110 is disposed on the center line WCL in the width direction with a lot of body fluid. According to this, the body fluid which flows toward the rear side in the front-rear direction L travels along the plurality of point-like compressed parts 90 constituting the line-shaped compressed part 100, and the width direction center line WCL where the bent part 110 is provided. Since it is difficult to diffuse in the width direction W, body fluid leakage in the width direction W can be more reliably suppressed.

  In the absorbent article 1 which concerns on this embodiment, an outer groove-shaped pressing part is enclosed so that the both sides of the width direction W of several row-shaped pressing parts 100 and the back side of the front-back direction L of several row pressing parts 100 may be enclosed. 82 is arranged. According to this, even if the bodily fluid that has reached the columnar squeezing unit 100 may diffuse outward in the width direction W also by the columnar squeezing unit 100, the body fluid is more than the outer groove-shaped squeezing unit 82. It is possible to prevent diffusion to the outside in the width direction W. Moreover, even if the bodily fluid that has reached the row-shaped compressed portion 100 is diffused rearward in the front-rear direction L than the row-shaped compressed portion 100, the body fluid is more longitudinal than the outer groove-shaped compressed portion 82. It is possible to prevent diffusion behind L.

  Furthermore, since the shape of the absorber 30 is ensured by forming the outer groove-shaped compressed portion 82 in an annular shape, it is possible to suppress a reduction in the area that comes into contact with the wearer due to the twist of the absorber 30 and the like. To do. That is, it is possible to suppress the occurrence of body fluid leakage due to a decrease in the area of the absorbent body 30 that contacts the wearer.

  In the absorbent article 1 according to the present embodiment, an inner groove shape formed in a continuous annular shape so as to surround the center of the central area CA in front of the line-shaped compressed portion 100 provided in the rear area BA in the front-rear direction L. The pressing part 81 is arrange | positioned. Thereby, the bodily fluid excreted from the wearer and flowing to the rear side in the front-rear direction L reaches the row-shaped squeezed portion 100 through the inner groove-shaped squeezed portion 81 formed in a continuous annular shape. Therefore, after the body fluid is absorbed by the inner groove-shaped compressed portion 81, the body fluid that has not been absorbed is absorbed by the row-shaped compressed portion 100 disposed behind the inner groove-shaped compressed portion 81 in the front-rear direction L. Become so. Thereby, since the quantity of the bodily fluid which flows back in the front-back direction L and the advancing speed of bodily fluid can be suppressed, the spreading | diffusion to back can be reduced.

  In addition, the inner groove-shaped compressed portion 81 is disposed in front of the line-shaped compressed portion 100 in the front-rear direction L, so that the twist or the like in front of the line-shaped compressed portion 100 can be suppressed.

  Moreover, in the absorbent article 1 which concerns on this embodiment, the row-shaped pressing part 100 formed in back area | region BA is comprised by the some point-like pressing part 90. FIG. According to such a configuration, when the wearer is sleeping on his / her back, the surface sheet 10 can be prevented from being lifted by coming into contact with the wearer's buttocks. Furthermore, breathability can be improved compared with the case where the line-shaped pressing part 100 is comprised by the groove-shaped pressing part instead of the some point-like pressing part 90, for example.

  Moreover, in the absorbent article 1 which concerns on this embodiment, the 1st line-shaped pressing part 100a, the 2nd line-shaped pressing part 100b, and the 3rd line-shaped pressing part 100c are formed as the line-shaped pressing part 100. FIG. According to such a configuration, for example, when the body fluid reaches the second row-shaped compressed portion 100b beyond the first row-shaped compressed portion 100a during use of the absorbent article 1, it is used as a guideline that informs that the replacement time is near. You can also

  Moreover, in the absorbent article 1 which concerns on this embodiment, the row-shaped pressing part 100 is extended on the other side of the width direction W with one serial part 101 extended on the one side of the width direction W on the basis of the bending part 110. And the other serial portion 102. In addition, one serial portion 101 and the other serial portion 102 extend in a direction intersecting the width direction W. According to this, since it can squeeze with a uniform pressure when shape | molding the several point-like pressing part 90 which comprises the row-like pressing part 100 in a manufacturing process, the shaping | molding quality of the several point-like pressing part 90 is obtained. Easy to secure.

  In addition, in the absorbent article 1 which concerns on this embodiment, the position in the front-back direction L of the dotted | punctate pressing part 90 provided in the back of the most front-back direction L of the 1st line-shaped pressing part 100a is the 2nd line-shaped pressing part 100b. Same as the position in the front-rear direction L of the point-like compressed part 90 provided in the most forward direction in the front-rear direction L, or the front-rear direction of the point-like compressed part 90 provided in the most forward direction in the front-rear direction L of the second row-shaped compressed part 100b It is preferable to be behind the position in the direction L.

  This is due to the following reason. The squeezing portion 90 located most rearward in the front-rear direction L of the first row-shaped squeezing portion 100a and the squeezing portion 90 located most forward in the front-rear direction L of the second row-like squeezing portion 100b have the above positional relationship. Thus, it is possible to prevent the distance PA between the first row-shaped compressed portion 100a and the second row-shaped compressed portion 100b from becoming too wide. Thereby, it can prevent that a twist generate | occur | produces between the 1st row-shaped pressing part 100a and the 2nd row-shaped pressing part 100b. Similarly, the position in the front-rear direction L of the point-like compressed part 90 provided most rearward in the front-rear direction L of the second row-shaped compressed part 100a is the frontmost in the front-rear direction L of the third row-shaped compressed part 100b. It is the same as the position in the front-rear direction L of the point-like pressing part 90 provided, or behind the position in the front-rear direction L of the point-like pressing part 90 provided in front of the most front-rear direction L of the third row-like pressing part 100b. Preferably there is.

(Modification 1)
Next, Modification 1 of the above-described embodiment will be described. Fig.5 (a) is the top view which looked at 1 A of absorbent articles which concern on the modification 1 of this invention from the skin contact surface side. In the following description of the modified example, parts having the same configuration as in the present embodiment are represented by the same reference numerals, and description thereof is omitted.

  In this embodiment, the distance PA1 in the front-rear direction L between the first row-shaped compressed portion 100a and the second row-shaped compressed portion 100b, and the front-rear direction L between the second row-shaped compressed portion 100b and the third row-shaped compressed portion 100c. Is different from the distance PA2.

  Specifically, the distance PA1 in the front-rear direction L between the first row-shaped compressed portion 100a and the second row-shaped compressed portion 100b is the front-rear direction L between the second row-shaped compressed portion 100b and the third row-shaped compressed portion 100c. It is narrower than the distance PA2. That is, the relationship PA1 <PA2 is satisfied.

  Here, as the interval between the row-shaped compressed parts 100 is narrower, the traveling speed of the body fluid flowing rearward in the front-rear direction L can be suppressed, and the effect of preventing body fluid leakage in the front-rear direction L and the width direction W is greater. On the other hand, the narrower the interval between the line-shaped compressed parts 100, the higher the rigidity due to the densely arranged line-shaped compressed parts 100, which may give the wearer a feeling of strangeness.

  Therefore, the effect which prevents the leakage of the bodily fluid in the front-back direction L and the width direction W, and the effect which suppresses discomfort to a wearer can be adjusted by adjusting the space | interval of the row-shaped pressing parts 100.

  In the present embodiment, the distance PA1 in the front-rear direction L between the first row-shaped compressed portion 100a and the second row-shaped compressed portion 100b is the front-rear direction L between the second row-shaped compressed portion 100b and the third row-shaped compressed portion 100c. It is narrower than the distance PA2.

  According to this, the effect which suppresses the leakage of a bodily fluid can be heightened in the front side of back area | region BA. On the other hand, on the rear side of the rear area BA, it is possible to enhance the effect of suppressing the rigidity together with the leakage of the body fluid.

(Modification 2)
Next, a second modification of the above-described embodiment will be described. FIG.5 (b) is the top view which looked at the absorbent article 1B which concerns on the modification 2 of this invention from the skin contact surface side. In the following description of the modified example, parts having the same configuration as in the present embodiment are represented by the same reference numerals, and description thereof is omitted.

  In the first row-shaped compressed portion 100a according to the present embodiment, the straight line La along the direction in which one series portion 101 extends and the straight line Lb along the direction in which the other series portion 102 extends have a first angle θ1. It is arranged to form.

  In the second row-shaped compressed portion 100b, the straight line La along the direction in which one serial portion 101 extends and the straight line Lb along the direction in which the other serial portion 102 extends form a second angle θ2. Has been.

  In the third row-shaped compressed portion 100c, the straight line La along the direction in which one serial portion 101 extends and the straight line Lb along the direction in which the other serial portion 102 extends form a third angle θ3. Has been.

  In the present embodiment, the second angle θ2 and the third angle θ3 are different. That is, the first angle θ1, the second angle θ2, and the third angle θ3 are different from each other.

  Specifically, in the present embodiment, the first angle θ1 is smaller than the second angle θ2, and the second angle θ2 is smaller than the third angle θ3. That is, the relationship θ1 <θ2 <θ3 is satisfied.

  Here, as the angle θ formed by the straight line La along the direction in which the one serial portion 101 extends and the straight line Lb along the direction in which the other serial portion 102 extends is smaller, the width direction W of the entire columnar squeezed portion 100 is reduced. The length at becomes smaller. In such a row-shaped compressed part 100, the effect of preventing leakage of body fluid in the width direction W is increased.

  On the other hand, the greater the angle θ formed by the straight line La along the direction in which the one serial portion 101 extends and the straight line Lb along the direction in which the other serial portion 102 extends, the greater the width direction of the entire columnar compressed portion 100 The length at W increases. In such a row-shaped squeezed part 100, the effect of preventing leakage of body fluid flowing to the rear side in the front-rear direction L is increased.

  Therefore, by adjusting the first angle θ1 and the second angle θ2, the effect of suppressing leakage of bodily fluid flowing to the outside in the width direction W and the effect of suppressing leakage of bodily fluid flowing to the rear side in the front-rear direction L , Can be adjusted.

  In the present embodiment, the first angle θ1 of the first row-shaped squeezed portion 100a that is close to the excretory opening contact center C in the first row-like crushed portion 100a and the second row-like crushed portion 100b is defined as the second row shape. By making it smaller than the second angle θ2 of the pressing part 100b, the first row pressing part 100a close to the excretory opening contact center C more reliably suppresses leakage of bodily fluids flowing outward in the width direction W. The leakage of body fluid that flows backward in the front-rear direction L can be more reliably suppressed by the two rows of compressed parts 100b.

  Furthermore, by making the third angle θ3 of the third row-shaped compressed portion 100c larger than the second angle θ2 of the second row-shaped compressed portion 100b, on the rear side of the rear area BA, outward in the width direction W. Leakage of flowing body fluid can be suppressed more reliably.

  In the present embodiment, an example is given in which the first angle θ1 is smaller than the second angle θ2, and the second angle θ2 and the third angle θ3 satisfy the relationship θ1 <θ2 <θ3. However, the present invention is not limited to this. For example, the first angle θ1 may be smaller than the second angle θ2, and the second angle θ2 and the third angle θ3 may satisfy the relationship θ1> θ2> θ3, or θ1 = Θ2 <θ3 may be satisfied. The second angle θ2 and the third angle θ3 can be adjusted as appropriate.

(Other embodiments)
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.

  For example, the absorbent article is not limited to a sanitary napkin, and may be an absorbent pad or a panty liner. Further, for example, in the absorbent article, a gather may be formed at the outer end in the width direction of the absorbent body.

  Moreover, in this embodiment mentioned above, although center area | region CA is prescribed | regulated based on the position of the wing parts 43 and 44, it is not limited to this, For example, the absorber 30 is the absorbent article 1. In a plan view, when a recess (not shown) that is recessed in the width direction W is provided at the center in the front-rear direction L, an area between the front end portion and the rear end portion of the recess portion of the absorber 30 is defined. The central area CA may be used.

  In addition, the above-described embodiment, Modification 1 and Modification 2 can be combined.

DESCRIPTION OF SYMBOLS 1, 1A, 1B ... Absorbent article 10 ... Top sheet 20 ... Back sheet 30 ... Absorber 41, 42 ... Side sheet 43, 44 ... Wing part 80 ... Groove-shaped pressing part 81 ... Inner groove-shaped pressing part 82 ... Outer groove Squeeze squeezing part 90, 91 ... dotted squeeze part 100 ... row squeezing part 100a ... first row squeezing part 100b ... second row squeezing part 100c ... third row squeezing part 101 ... series part 102 ... series part 110 ... Bent part BA ... Back area CA ... Center area FA ... Front area

Claims (6)

Has a longitudinal direction and a width direction perpendicular to the longitudinal direction,
An absorbent article comprising a liquid-permeable top sheet, a liquid-impermeable back sheet, and an absorber provided between the top sheet and the back sheet,
The absorbent article has a central region located at the center in the front-rear direction, a front region located on the front side of the central region, and a rear region located on the rear side of the central region. ,
A grooved squeezed part is formed by squeezing the topsheet and the absorber into a groove shape,
It is constituted by a plurality of point-like pressing parts that are formed by squeezing the top sheet and the absorbent body, and a plurality of line-like pressing parts in which the plurality of point-like pressing parts are arranged in a line are formed,
Said groove-like compression portions, at least the central region, said each of opposite sides of said widthwise relative to the width direction center line passing through the center in the width direction of the absorbent article, so as to extend along the longitudinal direction Has been placed,
The distance in the front-rear direction of each of the plurality of columnar squeezing parts is wider than the interval between the plurality of point-like squeezing parts constituting the plurality of columnar squeezing parts,
The plurality of columnar squeezed portions are disposed at least in the rear region,
Each of the plurality of line-shaped compressed parts has an bent article in which the array of the plurality of point-shaped compressed parts is arranged so as to bend toward the rear side in the front-rear direction. The bent portion, the absorbent article according to claim 1, characterized in that it is arranged on the front Symbol widthwise center line. As the groove-like compressed parts, and both sides of the width direction of the plurality of rows compressing portion, the outer groove compressing portion which is formed to surround the rear side of the longitudinal direction of the plurality of rows compressed portion The absorbent article according to claim 1 or 2, wherein the absorbent article is arranged. As the groove-like pressing part, an inner groove-like pressing part formed in a continuous annular shape so as to surround the center of the central region is arranged in front of the plurality of row-like pressing parts in the front-rear direction. The absorbent article as described in any one of Claims 1 thru | or 3 characterized by these. The line-shaped compressed parts are, based on the bent part, one series portion in which a part of the plurality of point-shaped compressed parts is arranged to extend to one side in the width direction, and the plurality of point-shaped compressed parts. The other in-line portion arranged so as to extend to the other side in the width direction,
The plurality of columnar pressing units include a first columnar pressing unit and a second columnar pressing unit disposed on the rear side in the front-rear direction with respect to the first columnar pressing unit,
In the first row-shaped squeezing part, a straight line along the direction in which the one serial portion extends and a straight line along the direction in which the other serial portion extends form a first angle. ,
In the second row-shaped squeezing part, a straight line along the direction in which the one serial part extends and a straight line along the direction in which the other serial part extends form a second angle. wherein the first angle and the previous SL second angle, the absorbent article according to any of claims 1 to 4, characterized different. The plurality of columnar squeezing units are a first columnar squeezing unit, a second columnar squeezing unit disposed on the rear side in the front-rear direction with respect to the first columnar squeezing unit, and the second columnar squeezing unit. A third row-shaped squeezing part disposed on the rear side in the front-rear direction than the part,
A distance in the longitudinal direction between the first row-shaped compressed portion and the second column-like compressing portion, the distance in the longitudinal direction between said first two rows compressing portion the third column-like compressed parts are different The absorbent article as described in any one of Claims 1 thru | or 5 characterized by the above-mentioned.

Images