JP2018000474A - Absorbent article - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve a wearing feeling while suppressing detachment of an attachment tape.SOLUTION: An absorbent article 1 comprises a front bodice 1A, a crotch part and a rear bodice provided in a longitudinal direction in this order, and plural sheet materials containing an absorber, are laminated on the absorbent article. The absorbent article comprises: a front patch 3 provided on a width direction intermediate part of the front bodice 1A, and positioned on an outermost surface of the plural sheet materials; and an attachment tape 2 having fixed parts 20 which extend outward from both end parts of the rear bodice in the width direction, and fixed to the front patch 3. On the front patch 3, on each of both sides thereof in the width direction, an attachment area 30 to which the fixed parts 20 of the attachment tape 2 are fixed, is provided. On each attachment area 30, an adhesion part 31 where all plural sheet materials are adhered in the lamination direction, and a non-adhesion part 32 where at least some of the plural sheet materials are not adhered in the lamination direction, are provided.SELECTED DRAWING: Figure 3

Description

  The present invention relates to an absorbent article that is attached to a wearer's body by fastening a fastening tape provided on the back body to the front body.

  Conventionally, an absorbent article (for example, a tape-type disposable diaper) in which a fastening tape is provided on the back body located on the back of the wearer and a front patch is provided on the front body located on the abdomen of the wearer is known. Yes. The fastening tape and the front patch constitute a fastening mechanism, and the absorbent article is attached to the wearer's body by fastening the fastening tape on the back body to the front patch on the front body. Examples of the fastening mechanism include a surface fastener that is fixed by mechanical coupling of a hook material (male member) and a loop material (female member), and a structure that is fixed by an adhesive tape and a plastic film (see Patent Document 1). .

JP 2013-46731 A

  Since the fastening tape and the front patch are parts having a function for fixing the absorbent article to the wearer's body, the fastening tape and the front patch may be configured to be difficult to come off even if the wearer moves (even if the posture changes). desirable. On the other hand, when the fixing force of the fastening tape and the front patch is too strong, the fastening tape is pulled with the movement of the wearer (change in posture), which may give the wearer a sense of incongruity.

  The present case has been devised in view of such problems, and an object thereof is to provide an absorbent article that has improved wearing feeling while being difficult to remove the fastening tape. The present invention is not limited to this purpose, and is a function and effect derived from each configuration shown in the embodiment for carrying out the invention described later, and has another function and effect that cannot be obtained by conventional techniques. is there.

  (1) The absorbent article disclosed herein is an absorbent article in which a front body, a crotch part, and a back body are provided in this order in the longitudinal direction, and a plurality of sheet materials including an absorbent body are laminated. A front patch located at the outermost surface of the plurality of sheet members, and extending outwardly at each of both end portions in the width direction of the rear body, A fastening tape having a fastening portion to be fastened. On the front patch, fastening regions for fastening the fastening part of the fastening tape are provided on both sides in the width direction. Further, in each of the fastening regions, an adhesive portion where all of the plurality of sheet materials are bonded in the stacking direction, and a non-bonded portion where at least a part of the plurality of sheet materials are not bonded in the stacking direction And are provided.

  (2) The absorbent article preferably includes a liquid-impermeable back sheet that covers the absorbent body from the non-skin surface side, and a cover sheet adhered to the non-skin surface side of the back sheet. . In this case, the front patch is adhered to the entire cover sheet, the back sheet and the cover sheet are adhered to each other except for a part, and the part that is not adhered is provided as the non-adhesive part. preferable.

(3) It is preferable that the said non-bonding part is extended over the whole longitudinal direction of the said front patch.
(4) The fastening region may include the non-adhesion portion arranged at an intermediate portion in the width direction and the two adhesion portions arranged so as to sandwich the non-adhesion portion from both sides in the width direction. preferable.

  Since a plurality of sheet materials can be displaced from each other at the non-adhesive portion in the fastening region, the fastening portion and the sheet material are fixed in a state where the fastening portion of the fastening tape is fastened to the fastening region of the front patch. A play in the thickness direction can be formed between the two. On the other hand, since the adhesive portion is also provided in the fastening region, this play can be prevented from becoming too large, and the position in the width direction of the fastening portion is not greatly displaced.

  In other words, according to the disclosed absorbent article, the fastening portion of the fastening tape that is fastened to the front patch by play by the non-adhesive portion is regulated by the wearer while the position in the width direction of the fastening portion is regulated by the adhesive portion. It is possible to easily follow the movement (change in posture) of the wearer, and the tensile force on the fastening tape accompanying the movement of the wearer can be reduced. Therefore, it is possible to improve the wearing feeling while making it difficult to remove the fastening tape.

It is a schematic plan view which expand | deploys and shows the absorbent article which concerns on embodiment. It is a disassembled perspective view which expand | deploys and shows the absorbent article of FIG. (A) is the top view to which the front body of the absorbent article of FIG. 1 was expanded, (b) is typical sectional drawing which shows the relationship between a front patch, a cover sheet | seat, and a back seat | sheet.

  With reference to the drawings, an absorbent article as an embodiment will be described. The embodiment described below is merely an example, and there is no intention of excluding various modifications and technical applications that are not explicitly described in the following embodiment. Each configuration of the present embodiment can be implemented with various modifications without departing from the spirit thereof. Further, they can be selected as necessary, or can be appropriately combined. In this embodiment, a tape-type paper diaper (so-called “tape-type disposable diaper”) is illustrated as an absorbent article.

[1. Constitution]
[1-1. overall structure]
FIG. 1 is a schematic plan view of the paper diaper 1 according to the present embodiment as viewed from the outside. As shown in FIG. 1, the disposable diaper 1 of the present embodiment has a front body 1A that contacts the wearer's abdomen, a crotch 1B that contacts the wearer's crotch, and a back body 1C that contacts the wearer's back. It is provided in this order in the direction. The paper diaper 1 is configured by laminating a plurality of sheet materials including an absorber, and the fastening tape 2 provided on the back body 1C is fastened to the front patch 3 provided on the front body 1A. It is worn by the wearer.

  In the following description, the direction in which the sheets are laminated (lamination direction) is referred to as the thickness direction, and the direction (short direction) perpendicular to both the longitudinal direction and the thickness direction is referred to as the width direction. In the paper diaper 1, the side facing the wearer's skin (inner side when worn) is referred to as the skin side, and the opposite side of the skin side (outside when worn) is referred to as the non-skin side. As shown in FIG. 1, the disposable diaper 1 is formed in a plane-symmetric shape with respect to the center line C in the width direction.

  FIG. 2 is an exploded perspective view showing a plurality of sheet materials constituting the disposable diaper 1 of the present embodiment. As shown in FIG. 2, the paper diaper 1 includes a top sheet 11 and a side sheet 15, a core wrap 12 (absorbent body), a back sheet 13, a cover sheet 14, and a front patch 3 that are stacked in order from the skin side (inside). Glued together. The top sheet 11 is a liquid-permeable sheet-like member that directly touches the wearer's skin, and covers the skin surface side of the core wrap 12. Side sheets 15 are disposed on both side edges of the rectangular top sheet 11. The outer shape when the top sheet 11 and the two side sheets 15 are combined is the same as the outer shape of the cover sheet 14.

  The core wrap 12 is a mat-shaped member in which an absorbent body that absorbs and holds a liquid such as urine is covered with a wrap sheet. The absorbent body is a liquid-absorbing member made up of a plurality of sheet-like or mat-like members. For example, a highly water-absorbing resin (so-called SAP <Superabsorbent> polymer>, also referred to as a superabsorbent polymer or superabsorbent polymer). The core wrap 12 may have a pattern as shown in FIG.

  The back sheet 13 is a liquid-impermeable sheet-like member that covers the core wrap 12 from the non-skin surface side, and has a function of preventing liquid such as urine from leaking to the outside of the paper diaper 1. The cover sheet 14 is a sheet-like member bonded to the non-skin surface side of the back sheet 13, and has both a function of reinforcing the back sheet 13 and a function of improving the touch of the paper diaper 1. The front patch 3 and the fastening tape 2 are attached to the cover sheet 14. Note that a rubber thread as shown in FIG. 2 may be bonded to the cover sheet 14.

  The front patch 3 is a sheet-like member for fixing and holding the fastening portion 20 of the fastening tape 2 to the front body 1A, and is provided over a wide range in the intermediate portion in the width direction of the front body 1A. The front patch 3 of the present embodiment is located on the outermost surface of the plurality of sheet materials, and is entirely bonded to the cover sheet 14. In addition, the structure of the paper diaper 1 is not restricted to this, For example, the cover sheet 14 may be a multilayer structure which has an inner cover sheet and an outer cover sheet.

  As shown in FIG.1 and FIG.2, the fastening tape 2 comprises a fastening mechanism with the front patch 3, and is provided in each of the width direction both ends of the back body 1C. In the present embodiment, two fastening tapes 2 are provided on both sides in the width direction of the back body 1C, but it is sufficient that at least one fastening tape 2 is provided on both sides in the width direction. The fastening tape 2 is bonded in a state where the root portion is sandwiched between the cover sheet 14 and the side sheet 15 and extends outward in the width direction from each of both edges of the back body 1C. In the vicinity of the front end portion of the fastening tape 2, a fastening portion 20 that is fastened to the front patch 3 is provided. The length of the fastening tape 2 in the extending direction (the amount of protrusion from both edges) is the size of the paper diaper 1 so that the fastening part 20 can be accommodated in a predetermined region (a fastening region 30 described later) of the front patch 3. It is set appropriately according to The shape of the fastening tape 2 and the position of the fastening portion 20 are not limited to those illustrated.

  In the present embodiment, as a fastening mechanism that fixes the fastening tape 2 and the front patch 3, a planar fastener that is fixed by mechanical coupling of a hook material (male member) and a loop material (female member) is used. The surface fastener is constituted by a combination of a hook material having a large number of protrusions (for example, a hook shape or a mushroom shape) formed on the surface and a loop material having a loop-shaped fiber disposed on the surface. That is, a hook material is provided on one of the fastening portion 20 and the front patch 3, and a loop material is provided on the other. By using the planar fastener, the hook material and the loop material (fastening portion 20 and front patch 3) can be firmly fixed while being in a peelable state. Further, it can be used repeatedly. In addition, the fastening part 20 may be comprised, for example with the adhesive and the adhesive tape. In this case, the front patch 3 may be formed of, for example, a plastic film having a smooth surface.

[1-2. Main part configuration]
3A is an enlarged plan view of the front body 1A of the disposable diaper 1 shown in FIG. 1, and FIG. 3B is a schematic cross section showing the relationship among the front patch 3, the cover sheet 14, and the back sheet 13. FIG. In FIG. 3A, the fastening tape 2 fastened to the front patch 3 is indicated by a two-dot chain line only on the left side in the drawing. Further, in FIG. 3B, for the sake of convenience, hatching indicating a cross section is omitted, and the dimension in the thickness direction is shown enlarged. The front patch 3 of the present embodiment is formed in a substantially rectangular shape, and has a width direction dimension equivalent to the width direction dimension of the crotch part 1B and a longitudinal direction larger than the longitudinal range in which the two fastening tapes 2 exist. With dimensions.

As shown in FIG. 3A, on the front patch 3, fastening regions 30 for fastening the fastening part 20 of the fastening tape 2 are provided on both sides in the width direction. In the present embodiment, the fastening region 30 is a range in which the distance from the center line C in the width direction is not less than the first predetermined length L _{1 and not} more than the second predetermined length L ₂ . The predetermined lengths L ₁ and L ₂ are appropriately set according to the length of the fastening tape 2 in the extending direction, the position of the fastening portion 20, the size of the paper diaper 1, the size of the front patch 3, and the like. In FIG. 3A, the fastening region 30 is indicated by a solid line for convenience. However, in the actual paper diaper 1, no boundary line exists between the fastening region 30 and a region other than the fastening region 30.

  Each fastening region 30 is provided with an adhesive portion 31 in which all of the plurality of sheet materials are bonded in the thickness direction, and a non-adhesion portion 32 in which at least some of the plurality of sheet materials are not bonded in the thickness direction. . In FIG. 3A, for convenience, the non-adhesive portion 32 is shown with a mesh line. However, in the actual paper diaper 1, the non-adhesive portion 32 is separated from the sheet material formed between the sheet materials. Provided as possible part.

  The width direction position of the non-bonding portion 32 of the present embodiment is approximately the center in the width direction of the fastening region 30. That is, each fastening region 30 includes a non-adhesive portion 32 disposed in the intermediate portion in the width direction (substantially the center in the present embodiment) and two adhesives disposed so as to sandwich the non-adhesive portion 32 from both sides in the width direction. Part 31. In the area other than the fastening area 30 in the front patch 3, a plurality of sheet materials are overlapped and bonded to each other. It becomes a continuous part.

  Further, the non-adhesive portion 32 of the present embodiment has a width direction dimension W such that at least a part of the fastening portion 20 overlaps when the fastening portion 20 of the fastening tape 2 is fastened to the fastening region 30. Set to In the present embodiment, the width direction dimension W of the non-bonding portion 32 is set slightly smaller than the dimension in the extending direction (width direction) of the fastening portion 20, but the width direction dimension W is the extension of the fastening portion 20. You may set larger than the dimension of an installation direction. The width direction dimension W is set to 15 mm or more, for example. The non-bonding portion 32 is preferably provided near the center portion in the width direction of the front patch 3, and is provided within a range of 1/3 of the width direction dimension of the front patch 3 from the center line C in the width direction of the front patch 3. It is preferable. Moreover, it is preferable to provide the non-adhesion part 32 in the position which overlaps with the core wrap 12 in the thickness direction.

  Further, the longitudinal dimension of the non-bonded portion 32 of the present embodiment is set to be equal to the longitudinal dimension of the front patch 3. In other words, the non-bonding part 32 extends over the entire longitudinal direction of the front patch 3. In addition, the non-adhesion part 32 may be extended over the whole longitudinal direction of the front body 1A beyond the front patch 3. FIG. As shown in FIG. 3B, the non-bonding portion 32 of the present embodiment has a thickness direction position between the back sheet 13 and the cover sheet 14. In other words, the back sheet 13 and the cover sheet 14 are bonded to each other except for a part extending in the longitudinal direction, and an unbonded part (i.e., a removed part) remains as a separable part. It is provided as a non-bonding part 32.

[2. effect]
(1) The paper diaper 1 described above is provided with an adhesive portion 31 and a non-adhesive portion 32 in each fastening region 30 on the front patch 3. Since the plurality of sheet materials (back sheet 13 and cover sheet 14 in the present embodiment) can be displaced from each other at the non-bonding portion 32 of the fastening region 30, the fastening portion 20 of the fastening tape 2 is the front patch 3. In the state of being fastened to the fastening region 30, play in the thickness direction can be formed between the fastening portion 20 and the sheet material (back sheet 13 in the present embodiment).

  On the other hand, since the bonding portion 31 is also provided in the fastening region 30, it is possible to prevent the above play from becoming too large, and the position in the width direction of the fastening portion 20 is not greatly shifted. In other words, the position of the fastening portion 20 in the width direction is regulated by the adhesive portion 31, and the fastening portion 20 fastened to the front patch 3 is moved by the wearer's movement (change in posture) by play by the non-adhesive portion 32. It can be made to follow easily and the tensile force with respect to the fastening tape 2 accompanying a wearer's movement can be made small. Therefore, a feeling of wear can be improved while it is difficult to remove the fastening tape 2.

(2) In the above-described paper diaper 1, the front patch 3 is bonded to the cover sheet 14 on the whole surface, and the back sheet 13 and the cover sheet 14 are bonded to each other except for a part, and this part is used as the non-bonded part 32. Since it is provided, the front patch 3 located on the outermost surface can be made difficult to peel off while maintaining the difficulty in removing the fastening tape 2.
(3) Moreover, in the paper diaper 1 mentioned above, since the non-adhesion part 32 is extended over the whole longitudinal direction of the front patch 3, regardless of the longitudinal direction position of the fastening part 20, the fastening part 20 of FIG. At least a part of the non-bonding portion 32 can be overlapped. Thereby, the difficulty in detachment of the fastening tape 2 can be improved.

  (4) In the paper diaper 1 described above, the fastening region 30 includes the non-adhesive portion 32 disposed in the intermediate portion in the width direction and the two adhesions disposed so as to sandwich the non-adhesive portion 32 from both sides in the width direction. Since it has the part 31, the fastening part 20 and the non-adhesion part 32 become easy to overlap in the thickness direction. For this reason, the fastening part 20 fastened to the front patch 3 can be easily followed by the movement of the wearer, and the fastening tape 2 can be made more difficult to come off.

[3. Others]
The above-described configuration of the non-bonding portion 32 is an example, and the position and size thereof are not limited to those described above. For example, the front patch 3 and the cover sheet 14 may be bonded to each other except for a part, and a part that is not bonded may be provided as a non-bonded part. Alternatively, in the case where the cover sheet 14 has a multilayer structure, a plurality of cover sheets 14 may be bonded except for a part thereof, and a part that is not bonded may be provided as a non-bonded part.

  Moreover, the non-bonding part may be provided at a plurality of locations in the thickness direction. For example, non-adhered portions that are not bonded may be provided between the front patch 3 and the cover sheet 14 and between the cover sheet 14 and the back sheet 13. In this case, the two non-adhesive portions may completely overlap in the thickness direction, or only a part thereof may overlap.

In addition, the position in the width direction of the non-bonding portion may not be substantially the center of the fastening region 30, and may be provided so as to be offset toward the center line C side or the edge side in the fastening region 30. In addition, in the above-described fixing region 30, the bonding portions 31 are provided on both sides of the intermediate non-bonding portion 32, but the bonding portion 31 and the non-bonding portion 32 are integrated in the fixing region 30. It may be provided one by one. Alternatively, two non-bonding portions 32 may be provided with the bonding portion 31 interposed therebetween.
In addition, the specific structure of the paper diaper 1 mentioned above is an example, Comprising: It is not restricted to what was mentioned above.

1 disposable diaper (absorbent article)
1A Front body 1B Inseam 1C Back body 2 Fastening tape 3 Front patch 11 Top sheet 12 Core wrap (absorber)
13 Back sheet 14 Cover sheet 15 Side sheet 20 Fastening part 30 Fastening area 31 Adhesive part 32 Non-adhesive part

Claims (4)

A front body, a crotch part, and a back body are provided in this order in the longitudinal direction, and an absorbent article in which a plurality of sheet materials including an absorbent body are laminated,
A front patch provided in an intermediate portion in the width direction of the front body, and positioned on an outermost surface of the plurality of sheet materials;
A fastening tape extending outwardly to each of both ends in the width direction of the back body and having a fastening portion fastened to the front patch;
On the front patch, on both sides in the width direction, a fastening region for fastening the fastening part of the fastening tape is provided,
In each of the fastening regions, there are an adhesive portion in which all of the plurality of sheet materials are bonded in the stacking direction, and a non-bonded portion in which at least a part of the plurality of sheet materials is not bonded in the stacking direction. An absorbent article characterized by being provided. A liquid-impermeable back sheet that covers the absorbent body from the non-skin surface side;
A cover sheet adhered to the non-skin surface side of the back sheet,
The front patch is adhered to the entire cover sheet,
2. The absorbent article according to claim 1, wherein the back sheet and the cover sheet are bonded to each other except for a portion, and the non-bonded portion is provided as the non-bonding portion. The absorptive article according to claim 1 or 2, wherein said non-adhesion part is extended over the whole longitudinal direction of said front patch. The fastening region includes the non-adhesive portion arranged at an intermediate portion in the width direction and the two adhesive portions arranged so as to sandwich the non-adhesive portion from both sides in the width direction. The absorptive article according to any one of claims 1 to 3.

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