JP6118120B2 - Absorbent article and method for manufacturing absorbent article - Google Patents

Description

  The present invention relates to an absorbent article and a method for manufacturing the absorbent article.

  Generally, the adhesive for fixing to a wearer's underwear is apply | coated to each wing of a sanitary napkin (refer patent document 1).

  The sanitary napkin has a symmetrical shape with respect to the center line in the product width direction.

  More specifically, in such a sanitary napkin, the boundary between the absorbent body and the wing is provided at a symmetrical position with respect to the center line in the product width direction.

US Pat. No. 5,428,052 Japanese translation of PCT publication No. 7-506037

  Here, as shown in FIG. 8 (a), when the sanitary napkin is attached to the underwear and the wearer moves his / her leg back and forth as shown in FIG. 8 (b), FIG. As shown in c) and FIG. 8 (d), the underwear and the wing are misaligned, and as a result, there is a problem that body fluid is likely to leak from the end in the longitudinal direction of the product.

  Therefore, the present invention has been made in view of such a situation, and even when the wearer moves his / her leg back and forth while being attached to the underwear, the present invention is not easily displaced from the underwear. It aims at providing the manufacturing method of an absorptive article and an absorptive article which cannot leak body fluid from the end of a direction easily.

  The first feature of the present invention has a product longitudinal direction and a product width direction, and is a liquid-permeable top sheet, a back sheet, and an absorber disposed between the top sheet and the back sheet. An absorbent body, and a plurality of wings extending outward in the product width direction of the absorbent body, wherein the absorbent article is placed in each of the wings of the wearer. An adhesive for fixing to underwear is applied, and a boundary between the absorbent body and the wing is provided at an asymmetric position with respect to a center line of the absorbent body in the product width direction. It is a summary.

  The second feature of the present invention is a method for manufacturing an absorbent article, wherein the absorbent web is disposed between a liquid-permeable top sheet web and a back sheet web. The step A of joining the release paper web being transported with the adhesive applied from the backsheet web side, and the web to which the release paper web is joined are cut into the shape of the absorbent article. Step B of obtaining the absorbent article thereby, and in Step B, two of the two absorbent articles obtained in succession are provided on one side of one of the absorbent articles. The gist is that the web between two wings constitutes the wing of the other absorbent article.

  As described above, according to the present invention, even when the wearer moves his / her leg back and forth in the state of being worn on the underwear, the body fluid from the end in the product longitudinal direction is not easily displaced from the underwear. It is possible to provide an absorbent article that hardly leaks and a method for manufacturing the absorbent article.

It is a development top view (skin contact surface side) of an absorptive article concerning a 1st embodiment of the present invention. It is a development top view (non-skin contact surface side) of an absorptive article concerning a 1st embodiment of the present invention. It is sectional drawing of the absorbent article which concerns on this embodiment along the AA line shown in FIG.1 and FIG.2. It is a figure for demonstrating an example of the manufacturing method of the absorbent article which concerns on one Embodiment of this invention. It is a development top view (non-skin contact surface side) of an absorptive article concerning modification 1 of the present invention. It is an expansion | deployment top view (skin contact surface side) of the absorbent article which concerns on the modification 2 of this invention. It is a development top view (skin contact surface side) of an absorptive article concerning modification 3 of the present invention. It is a figure for demonstrating a prior art.

  With reference to FIG. 1 thru | or FIG. 4, the absorbent article 1 which concerns on the 1st Embodiment of this invention is demonstrated.

  In the following description of the drawings, the same or similar parts are denoted by the same or similar reference numerals. However, it should be noted that the drawings are schematic and ratios of dimensions and the like are different from actual ones.

  Therefore, specific dimensions and the like should be determined in consideration of the following description. Moreover, the part from which the relationship and ratio of a mutual dimension differ also in between drawings may be contained.

  FIG. 1 is a development plan view of the absorbent article 1 according to the present embodiment as viewed from the skin contact surface side after being taken out from the individual package, and FIG. 2 is a non-skin contact surface side after being taken out from the individual package. FIG. 3 is a developed plan view of the absorbent article 1 according to the present embodiment as viewed from FIG. 3, FIG. 3 is a cross-sectional view of the absorbent article 1 along the line AA in FIGS. 1 and 2, and FIG. It is a figure for demonstrating an example of the manufacturing method of the absorbent article.

  The absorbent article 1 according to the present embodiment is an absorbent article such as a sanitary napkin, a panty liner (cage sheet), or an incontinence pad.

  As shown in FIGS. 1 and 2, the absorbent article 1 according to this embodiment has a product longitudinal direction L and a product width direction W.

  Moreover, as shown in FIG.1 and FIG.2, the absorbent article 1 which concerns on this embodiment is the absorber main body 10, and the some wings 141-144 extended to the product width direction W outer side of the absorber main body 10. It has.

  In the absorbent article 1 according to the present embodiment, as shown in FIG. 1 (or FIG. 2), two wings 141 / are provided on the right side (the left side in the case of FIG. 2) of the absorbent body 10 in the product width direction W. 142 is provided, and two wings 143/144 are also provided on the left side (in the case of FIG. 2, the right side) of the absorbent body 10 in the product width direction W.

  Here, as shown in FIG. 3, the absorbent body 10 includes a liquid-permeable top sheet 11, a back sheet 12, and an absorbent body 13 disposed between the top sheet 11 and the back sheet 12. ing.

  A liquid-permeable second sheet (not shown) may be provided between the top sheet 11 and the absorber 13.

  Here, as the material constituting the top sheet 11, any material can be used as long as it is a sheet-like material having a structure that transmits liquid, such as a nonwoven fabric, a woven fabric, a perforated plastic sheet, a mesh sheet, or the like. . Moreover, as a raw material of a nonwoven fabric or a woven fabric, either a natural fiber or a chemical fiber can be used.

  The back sheet 12 is made of a polyethylene sheet, a breathable film containing calcium carbonate or barium sulfate, a laminated nonwoven fabric mainly composed of polypropylene, a breathable resin film, a spunbond or a spunlace. A sheet in which a breathable resin film is bonded to a non-woven fabric such as can be used.

  In addition, as a material which comprises the back seat | sheet 12, it is preferable to use the material which has a softness | flexibility of the grade which does not produce the sense of incongruity at the time of wear. Further, the back sheet 12 is desirably liquid-impervious and moisture-permeable, and is constituted by, for example, a microporous sheet obtained by subjecting an olefin-based resin such as polyethylene or polypropylene to melt-kneading an inorganic filler. You can also.

  Moreover, the absorber 13 contains a hydrophilic fiber and pulp. The absorber 13 is formed of a material that can absorb body fluid such as menstrual blood.

The absorbent body 13 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.

For example, in this embodiment, the absorber 13 is comprised by wrapping the pulp which laminated | stacked cotton-like pulp, synthetic pulp, etc. in about 100-300 g / m < ² > basis weight with protective paper (not shown).

  The absorber 13 may have a substantially uniform thickness on the entire surface or a non-uniform thickness. The protective paper is for maintaining the shape of the pulp, and as the protective paper, for example, crepe paper or tissue paper can be used.

  As shown in FIGS. 2 and 3, an adhesive 21 </ b> A for fixing the absorbent article 1 to the wearer's underwear is applied to the non-skin contact surface side of the absorbent body 10. For example, the application pattern of the adhesive 21 </ b> A is formed by a plurality of patterns extending in the product width direction W as shown in FIG. 2.

  Moreover, as shown in FIG.2 and FIG.3, the adhesive agent 21B for fixing the absorbent article 1 to a wearer's underwear is apply | coated to each non-skin contact surface side of several wings 141-144. Yes.

  Here, the wings 141 to 144 may be configured to be covered with the above-described top sheet 11 (see FIG. 3), or covered with a side sheet (not shown) different from the above-described top sheet 11. It may be configured to be

  In addition, as a material constituting the side sheet, a nonwoven fabric, a woven fabric, a perforated plastic sheet, a mesh sheet, or the like can be used. The side sheet may have a liquid-permeable structure or a liquid. The structure which does not permeate | transmit may be sufficient.

  However, in order to prevent menstrual blood from flowing over the side sheet to the outside of the absorbent article 1, the material constituting the side sheet preferably has hydrophobicity or water repellency.

  For example, in this embodiment, this side sheet is comprised by the air through nonwoven fabric. Air-through nonwoven fabric is soft and soft to the touch. When the wings 141 to 144 are arranged along the body, the feeling of wearing can be further improved by improving the texture of the wings 141 to 144.

  In the absorbent article 1 according to the present embodiment, as shown in FIG. 3, the adhesive 21 </ b> A / 21 </ b> B applied to the non-skin contact surface side of the back sheet 12 is covered with the release paper 22. It is configured. For example, the adhesive 21A / 21B side of the release paper 22 is coated with silicon or the like.

  Furthermore, as shown in FIG.1 and FIG.3, the some embossing 15 may be formed in the skin contact surface side of the area | region where the absorber 13 is arrange | positioned in the absorber main body 10. FIG.

  Further, as shown in FIGS. 1 and 3, the top sheet 11 and the back sheet 12 at the end in the product width direction W of each of the plurality of wings 14 may be configured to be joined by an emboss seal 14A. Good.

  As shown in FIG. 1, the top sheet 11 and the back sheet 12 at the end in the product longitudinal direction L of the absorbent body 10 may be configured to be joined by an emboss seal 14B.

Here, as shown in FIGS. 1 and 2, the boundary L / R between the absorbent body 10 and the wings 141 to 144 is asymmetric with respect to the center line O _{1 in} the product width direction W of the absorbent body 10. It is provided at a position.

That is, in the example of FIG. 1 (or FIG. 2), each of the two wings 143/144 provided on the left side (the right side in the case of FIG. 2) of the absorbent body 10 in the product width direction W and the absorbent body. Two wings provided on the boundary (the respective base portions of the wings 143/144) L between the main body 10 and the right side (the left side in the case of FIG. 2) of the absorbent body 10 in the product width direction W R (root portion of each wing 141/142) boundary between each and the absorber body 10 of 141/142 is not a relationship of line symmetry with respect to the center line _{O 1} of the product widthwise direction W of the absorber body 10 .

  As shown in FIGS. 1 and 2, at least one of the wings 141 to 144 may be disposed in the vicinity of the central region in the product longitudinal direction L of the absorbent body 10.

  In the example of FIGS. 1 and 2, the wings 141/144 are disposed in the vicinity of the central region in the product longitudinal direction L of the absorbent body 10.

  In addition, the center area | region of the product longitudinal direction L of the absorber main body 10 is an area | region designed as what contacts the vaginal opening of the wearer of underwear, when the absorbent article 1 is mounted | worn with underwear.

The boundary L / R of the above, substantially symmetrical positions with respect to the intersection O between the center line O ₂ of the product longitudinal direction L of the center line O ₁ and the absorbent body 10 of the product width direction W of the absorber body 10 May be provided.

  That is, in the example of FIGS. 1 and 2, the boundary (the root portion of each wing 143/144) L between each of the wings 143/144 and the absorbent body 10 and the absorption with each of the wings 141/142. The boundary R with the body body 10 (the root portion of each of the wings 141/142) R has a point-symmetric relationship with respect to the intersection point O.

  Further, as indicated by X1 in FIG. 1, the wing 141 and the wing 143 may be provided at positions overlapping in the product longitudinal direction L of the absorbent body 10.

  Similarly, as shown by X2 in FIG. 1, the wing 142 and the wing 144 may be provided at positions overlapping in the product longitudinal direction L of the absorbent body 10.

  Next, with reference to FIG. 4, an example of the manufacturing method of the absorbent article 1 which concerns on this embodiment is demonstrated.

  As shown in FIG. 4, in step S <b> 1, after the absorber 13 is arranged on the top sheet web 11 </ b> W being conveyed in the MD direction, the back sheet web 12 </ b> W is overlapped and joined.

  On the release paper web 22W, the above-described adhesive 21A is applied in step S2, and the above-described adhesive 21B is applied in step S3.

  In step S4, the release paper being transported in which the adhesive 21A / 21B is applied to the web being transported in which the absorbent body 13 is disposed between the web 11W for the top sheet and the web 12W for the back sheet. The web 22W for use is overlapped and joined from the backsheet web 12W side.

  In step S5, after embossing the web in a state where the release paper web 22W is bonded, the web is cut into the shape of the absorbent article 1 to thereby absorb the absorbent according to the present embodiment. Article 1 is acquired.

  Here, as shown in FIG. 4, in Step 5, two wings 1A-14 provided on one side of one absorbent article 1A out of two absorbent articles 1A / 1B acquired successively. The web between (or 1B-14) constitutes the wing 1B-14 (or 1A-14) of the other absorbent article 1B.

According to the absorbent article 1 according to this embodiment, since the boundary L / R is not in the relationship of line symmetry with respect to the center line O ₁ of the product widthwise direction W of the absorber body 10, the absorbent article 1 is attached to the undergarment When the wearer moves his / her leg back and forth in a state where the wearer is in a state of being deformed, it is difficult to deform against the force acting in the product longitudinal direction L of the absorbent article 1.

  Therefore, it is difficult to shift from the underwear, and it is possible to achieve an effect that leakage of body fluid from the end portion in the product longitudinal direction L hardly occurs.

(Modification 1)
With reference to FIG. 5, the absorbent article 1 which concerns on the modification 1 of this invention is demonstrated paying attention to difference with the absorbent article 1 which concerns on the above-mentioned 1st Embodiment.

  In the absorbent article 1 according to the first modification, the number of wings provided on the left side in the product width direction W of the absorbent body 10 is the number of wings provided on the right side in the product width direction W of the absorbent body 10. It is configured to be different from the number.

  For example, as shown in FIG. 5, in the absorbent article 1 according to the first modification, one wing 141 </ b> A is provided on the right side of the absorbent body 10, and two wings are provided on the left side of the absorbent body 10. 143/144 is provided.

Here, as shown in FIG. 5, the boundary L / R between the absorbent body 10 and the wing 141A / 143/144 are asymmetrical with respect to product width direction W center line _{O 1} of the absorbent body 10 In the position.

That is, in the example of FIG. 5, the boundary between each of the two wings 143/144 provided on the left side in the product width direction W of the absorbent body 10 and the absorbent body 10 (each of the wings 143/144). The boundary between the wing 141A provided on the right side in the product width direction W of the absorbent body 10 and the absorbent body 10 (the root part of the wing 141A) R is absorbed. The body body 10 is not in a line-symmetric relationship with respect to the center line O _{1 in} the product width direction W.

  Further, as shown in FIG. 5, the wing 141 </ b> A is disposed in the vicinity of the central region in the product longitudinal direction L of the absorbent body 10.

  Further, as shown by Y1 in FIG. 5, the wing 141A and the wing 143 are provided at positions overlapping in the product longitudinal direction L of the absorbent body 10, and as shown by Y2 in FIG. 5, the wing 141A and the wing 144 are provided. Alternatively, the absorbent body 10 may be provided at a position overlapping in the product longitudinal direction L.

(Modification 2)
With reference to FIG. 6, the absorbent article 1 which concerns on the modification 2 of this invention is demonstrated paying attention to difference with the above-mentioned 1st Embodiment and the absorbent article 1 which concerns on the modification 1. FIG.

  In the absorbent article 1 according to the second modification, the number of wings provided on the left side in the product width direction W of the absorbent body 10 is the number of wings provided on the right side in the product width direction W of the absorbent body 10. It is configured to be different from the number.

  For example, as shown in FIG. 6, in the absorbent article 1 according to the second modification, one wing 141 </ b> B is provided on the right side of the absorbent body 10, and two wings are provided on the left side of the absorbent body 10. 143/144 is provided.

Here, as shown in FIG. 6, the boundary L / R between the absorbent body 10 and the wing 141B / 143/144 are asymmetrical with respect to product width direction W center line _{O 1} of the absorbent body 10 In the position.

That is, in the example of FIG. 6, the boundary between each of the two wings 143/144 provided on the left side in the product width direction W of the absorbent body 10 and the absorbent body 10 (each of the wings 143/144). The boundary between the wing 141B provided on the right side in the product width direction W of the absorbent body 10 and the absorbent body 10 (the base part of the wing 141A) R is absorbed. The body body 10 is not in a line-symmetric relationship with respect to the center line O _{1 in} the product width direction W.

  As shown in FIG. 6, the wings 141 </ b> B / 143/144 are disposed in the vicinity of the central region in the product longitudinal direction L of the absorbent body 10.

  Further, as shown in FIG. 6, the length L2 in the product longitudinal direction L of the root portion L / R of the wing 141B / 143/144 is the product longitudinal direction L at the end of the wing 141B / 143/144 in the product width direction. It is comprised so that it may become longer than length L1.

(Modification 3)
With reference to FIG. 7, the absorbent article 1 according to the modified example 3 of the present invention will be described by focusing on the difference from the above-described first embodiment and the absorbent article 1 according to the modified example 1/2. .

  As shown in FIG. 7, in the absorbent article 1 according to the third modification, one wing 141 </ b> C is provided on the right side of the absorbent body 10, and one wing 144 </ b> C is also provided on the left side of the absorbent body 10. Is provided.

Here, as shown in FIG. 7, the boundary L / R between the absorbent body 10 and the wing 141C / 144C are asymmetrical positions with respect to the center line O ₁ of the product widthwise direction W of the absorber body 10 Is provided.

The boundary L / R of the above, substantially symmetrical positions with respect to the intersection O between the center line O ₂ of the product longitudinal direction L of the center line O ₁ and the absorbent body 10 of the product width direction W of the absorber body 10 May be provided.

  That is, in the example of FIG. 7, the boundary between the wing 144C and the absorber body 10 (the root portion of the wing 144C) L, and the boundary between the wing 141C and the absorber body 10 (the roots of each wing 141C). The portion (R) has a point-symmetric relationship with respect to the intersection point O.

  Although the present invention has been described in detail using the above-described embodiments, it is obvious to those skilled in the art that the present invention is not limited to the embodiments described in this specification. The present invention can be implemented as modified and changed modes without departing from the spirit and scope of the present invention defined by the description of the scope of claims. Therefore, the description of the present specification is for illustrative purposes and does not have any limiting meaning to the present invention.

1 ... absorbent article 10 ... absorbent body 11 ... topsheet 12 ... back sheet 13 ... absorbent body 141 to 144 ... wings 14A, 14B ... embossed seal 15 ... emboss 21A, 21B ... adhesive 22 ... release paper _{O 1} ... Products Center line in the width direction O ₂ ... Center line in the product longitudinal direction

Claims (5)

It has a product longitudinal direction and product width direction,
A liquid permeable top sheet, a back sheet, and an absorbent body comprising an absorbent body disposed between the top sheet and the back sheet;
An absorbent article comprising a plurality of wings extending outward in the product width direction of the absorbent body,
An adhesive for fixing the absorbent article to a wearer's underwear is applied to each of the wings,
The boundary between the absorber body and the wing is provided at an asymmetrical position with respect to the center line of the absorbent body main body in the product width direction ,
The number of the wings provided on the left side of the absorbent body in the product width direction is configured to be different from the number of the wings provided on the right side of the absorbent body in the product width direction. absorbent article, characterized in that.   The absorbent article according to claim 1, wherein at least one of the wings is disposed in the vicinity of a center region of the absorbent body main body in the product longitudinal direction.   The wing provided on the left side of the absorbent body in the product width direction and the wing provided on the right side of the absorbent body in the product width direction overlap in the product longitudinal direction of the absorbent body. The absorbent article according to claim 1, wherein the absorbent article is provided at a position.   The boundary is provided at a substantially symmetric position with respect to an intersection of a center line in the product width direction of the absorbent body and a center line in the product longitudinal direction of the absorbent body. Item 4. The absorbent article according to any one of Items 1 to 3. A method of manufacturing an absorbent article,
The release sheet web being transported in which an adhesive is applied to the web being transported in which the absorbent is disposed between the liquid-permeable topsheet web and the backsheet web. Step A for joining from the web side,
Step B for obtaining the absorbent article by cutting the web to which the release paper web is bonded into the shape of the absorbent article,
In the step B, of the two absorbent articles obtained in succession, the web between two wings provided on one side of one of the absorbent articles is the other absorbent article. The manufacturing method of the absorbent article characterized by comprising a wing.

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