JP5572822B2 - Pants-type wearing article and method for manufacturing the pants body - Google Patents

Description

  The present invention relates to a pants-type wearing article and a method for manufacturing the pant body.

  Conventionally, a pants-type wearing article in which an absorbent main body is detachable with respect to a pant main body has been proposed (see Patent Document 1).

JP-A-9-75390 (abstract)

  The conventional pants-type wearing article can be used for soft incontinence where a small amount of urine and stool can be excreted unintentionally by removing the absorbent body from the pant body every time it is incontinent. Is suitable.

  However, as shown in FIG. 6B, in the conventional pants-type wearing article, the leg elastic member F1 is disposed on the absorbent main body 5A in order to bring the crotch portion (crotch portion) 2 into close contact with the side surface of the leg. Therefore, the width | variety of 5 A of absorptive main bodies becomes large, wrinkles, and a feeling of wear falls remarkably. In particular, since the crotch part is raised and unsightly, it is easy to feel resistance to wearing out for incontinence and going out.

Accordingly, an object of the present invention is to provide a pants-type wearing article that is smart in appearance and has a good wearing feeling.
Another object of the present invention is to provide a novel method for producing a pant body of such a pant-type wearing article.

  In order to achieve the above object, a pant-type wearing article according to the present invention includes a front waistline portion that covers the front portion of the wearer's torso and extends in the waistline direction, and a back portion of the wearer's torso that extends in the waistline direction. A waist part, a crotch part that overlaps the front waist part and the rear waist part and extends in a vertical direction perpendicular to the waist direction and covers the wearer's crotch, and is detachably mounted on the crotch part, An absorbent main body sandwiching a liquid-retaining core between a liquid-permeable top sheet and a liquid-impermeable back sheet, and each end of the front waistline in the waistline direction; The waist part of the rear waist part is joined to each other in the waist direction, thereby forming a waist opening through which the body passes and a pair of leg openings through which the legs pass. Leg elastic members for tightly contacting the side surfaces of the legs extend along the vertical direction at both side edges in the width direction perpendicular to the vertical direction of the crotch portion, wherein the leg elastic members absorb the absorption It is not provided in the sex main body, and is fixed to a member forming the crotch portion.

According to the pants-type wearing article of the present invention, the leg elastic member is disposed in the crotch portion and is not disposed in the absorbent main body. Therefore, the absorptive main body which has a thick core becomes compact in the said width direction. Therefore, the appearance and wearing feeling when worn are improved.
In addition, since the leg elastic member is not provided on the absorbent main body, the absorbent main body that is disposable every incontinence can be produced at low cost.

FIG. 1A is a schematic front view showing a pants-type wearing article according to Example 1 of the present invention, and FIG. 1B is a cross-sectional view of the crotch portion and the absorbent main body taken along line IB-IB in FIG. It is the II-II sectional view taken on the line of the wearing article in FIG. 3A is a schematic plan view showing a state in which the pant body is opened, FIG. 3B is a cross-sectional view of the worn article along line IIIB-IIIB in FIG. 3A, and FIG. 3C is a cross-sectional view of the worn article along line IIIC-IIIC in FIG. . It is a schematic plan view which shows the manufacturing method of a pants main body. It is a schematic plan view which shows the manufacturing method of a pants main body. 6A is a schematic cross-sectional view showing a crotch portion and an absorbent main body in a pants-type wearing article of Example 2, and FIG. 6B is a schematic cross-sectional view according to a conventional example. It is a schematic plan view which shows the state which opened the pants main body and the absorptive main body of the pants | underpants type wearing article concerning Example 3 and 4. FIG.

The inner surface facing the wearer in at least one of the front waistline portion, the rear waistline portion, or the crotch portion has a surface with which a male fastener can be engaged, and the inner surface of the backsheet of the absorbent main body. A male fastener that detachably engages with the engageable surface is provided on the facing outer surface.
According to this aspect, it is easy to attach and detach the absorbent main body by the male fastener.
In addition, when the absorbent main body is displaced, the male fastener disposed on the absorbent main body is provided on the outer surface of the back sheet, and therefore, there is no possibility that the engagement element of the male fastener touches the skin.

  On the other hand, the manufacturing method of the pant body of the present pant-type wearing article includes a front waistline portion that covers the front portion of the wearer's torso and extends in the waistline direction, and a rear waistline portion that covers the back portion of the wearer's torso and extends in the waistline direction. A top sheet having liquid permeability and a back sheet having liquid impermeability, overlapping the front waistline part and the rear waistline part and extending in the longitudinal direction perpendicular to the waistline direction and covering the crotch of the wearer A crotch portion to which an absorbent main body sandwiching a core having liquid holding properties is detachably mounted, each end portion of the front waistline portion in the waistline direction, and the waistline direction of the rear waistline portion A method of manufacturing a pant body of a pant-type wearing article in which a waist opening through which the trunk passes and a pair of leg openings through which a leg passes are formed by joining each end to each other, the front waistline Part A step of conveying the first continuous web and the second continuous web serving as the rear waistline portion in a longitudinal direction of the respective webs in parallel and spaced apart from each other; and a third continuous web serving as the crotch portion Disposing an elastic member extended in the longitudinal direction of the third continuous web along both side edges of the third continuous web while conveying in the longitudinal direction; and a third continuous web on which the elastic member is disposed Are cut one after another at a predetermined interval in the longitudinal direction of the third continuous web to generate the crotch portion, and the first continuous web and the second continuous web conveyed in parallel to each other, The crotch portion is arranged so that the crotch portion straddles, and the direction in which the elastic member extends is along an orthogonal direction perpendicular to the longitudinal direction of the first and second continuous webs, and the crotch portion is arranged in the first direction Joining the second continuous web to form a composite web, folding the composite web at the crotch portion so that the first continuous web and the second continuous web overlap each other, and each of the pants Cutting the folded composite web one after another so that the main body includes one crotch portion, and generating the pant main body.

  According to this manufacturing method, the underpants main body which has a leg elastic member along a leg opening can be produced | generated. Therefore, since it is not necessary to provide a leg elastic member in the absorptive main body which has a thick core, the absorptive main body which has a core becomes compact.

In the manufacturing method, before the folding step, a step in which a surface fastener for detachably mounting the absorbent main body is disposed on at least one of the first continuous web, the second continuous web, or the crotch portion. It is preferable to provide.
According to this aspect, the absorbent main body can be easily attached and detached by the hook-and-loop fastener.

In the manufacturing method, after the crotch part is generated, the crotch part is rotated by 90 ° with respect to the direction in which the third continuous web is conveyed so that the extending direction of the elastic member of the crotch part is along the orthogonal direction. It is preferable to further include a step of turning.
According to this aspect, since the crotch portion is rotated by 90 °, an elastic member may be disposed along the longitudinal direction of the third continuous web. Therefore, it is easy to generate the crotch part.

  In the manufacturing method, the elastic member is a continuous elastic member continuous in the longitudinal direction. In the arranging step, the continuous elastic member is intermittently bonded to both side edges of the third continuous web, and the third continuous In the step of generating the crotch portion by cutting the web, it is preferable to further include a step of cutting at a portion where the continuous elastic member is not bonded to the third continuous web.

In this case, the non-bonded portion of the stretched continuous elastic member shrinks (snaps back) simultaneously with the cutting, and both ends of the crotch portion do not stretch. For this reason, it is difficult for each waistline portion to which both ends of the crotch portion are joined to be stiff.
Moreover, since both ends of the crotch portion do not expand and contract, it becomes easy to join the both ends to the first and second continuous webs.

  The invention will be more clearly understood from the following description of preferred embodiments with reference to the accompanying drawings, in which: However, the examples and figures are for illustration and description only and should not be used to define the scope of the present invention. The scope of the present invention is defined only by the claims. In the accompanying drawings, the same part numbers in a plurality of drawings indicate the same or corresponding parts.

Embodiments of the present invention will be described below with reference to the drawings.
1 to 5 show a first embodiment.

Diaper 1:
As shown in FIG. 1A, FIG. 1B, and FIG. 2, a pants-type diaper (an example of a pants-type wearing article) 1 of this embodiment is used by attaching an absorbent main body 5 to a pants main body 10. Each time the absorbent main body 5 gets dirty, the absorbent main body 5 is removed from the pant main body 10 and a new absorbent main body 5 is attached to the pant main body 10 for use.

Pant body 10:
The pant body 10 includes a front waistline portion 3, a rear waistline portion 4, and a crotch portion 2.
The front waistline portion 3 in FIG. 1A extends in the waistline direction W and covers the front portion of the wearer's torso. 3A, the rear waistline portion 4 extends in the waistline direction W and covers the rear portion of the wearer's torso.
For example, two nonwoven fabrics 300 and 300 are bonded to each of the waist portions 3 and 4 in FIG.
The crotch portion 2 in FIGS. 2 and 3A overlaps and is joined (adhered) to the front waistline portion 3 and the rear waistline portion 4 and extends in the longitudinal direction Z orthogonal to the waistline direction W to cover the crotch of the wearer. .

  Each waist 3W of the waistline direction W of the front waistline part 3 shown in FIG. 3A and each edge part 4s of the waistline direction W of the back waistline part 4 are joined to each other so that the waist opening Wo of FIG. And a pair of leg openings Lo in FIG. 1A through which the legs pass.

Leg elastic member F1;
As shown in FIGS. 1A, 1B, and 3A, the crotch portion 2 is provided with a leg elastic member F1 for bringing the crotch portion 2 into close contact with the inner side surface portion of the leg in the leg opening Lo. As shown in FIG. 3A, the leg elastic member F <b> 1 extends in the longitudinal direction Z along both side edges 2 e in the width direction W perpendicular to the longitudinal direction Z of the crotch portion 2.

  The front waistline portion 3 and the rear waistline portion 4 are provided with a plurality of waist elastic members F2 in the waistline direction W in order to fit the waistline portions 3 and 4 to the wearer's torso. Further, a plurality of hip elastic members F3 are disposed in the waistline direction W in order to fit the waistlines 3 and 4 to the wearer's hips.

Absorbent body 5:
As shown in FIGS. 1B, 2, 3 </ b> B and 3 </ b> C, the absorbent main body 5 is detachably mounted on the crotch portion 2. As shown in FIG. 2, in the absorbent main body 5, a core C having liquid retaining properties is sandwiched between a top sheet 50 having liquid permeability and a back sheet 51 having liquid impermeability.
The top sheet 50 is provided with a cuff 53.

Hook fastener 21, 52:
As shown to FIG. 3A, the 1st surface fastener 21 is adhering to the inner surface 2a which opposes a wearer in the said crotch part 2. As shown in FIG. The first surface fastener 21 is, for example, a female surface fastener.
On the other hand, as shown in FIGS. 2, 3B and 3C, the outer surface 5a of the absorbent main body 5 facing the inner surface 2a of the crotch portion 2 is detachably engaged with the first surface fastener 21. The surface fastener 52 is fixed. The second surface fastener 52 is a male surface fastener.

Leg elastic member F1:
As shown in FIG. 1B and FIG. 3B, the leg elastic member F <b> 1 is sandwiched and fixed between, for example, two nonwoven fabrics 200 and 200 that form the crotch portion 2. The leg elastic member F <b> 1 is provided between the front waistline portion 3 and the rear waistline portion 4. On the other hand, as shown to FIG. 3B and FIG. 3C, the leg elastic member F1 is not provided in the absorptive main body 5. FIG. That is, the leg elastic member F <b> 1 is not provided in the absorbent main body 5 and is fixed to a member forming the crotch portion 2.

  Therefore, as shown in the conventional example of FIG. 6B, unlike the case where the leg elastic member F1 is provided in the absorbent main body 5A, it is necessary to provide the leg elastic member F1 in the absorbent main body 5 of FIG. Therefore, the absorbent main body 5 can be made compact in the width direction W. That is, as shown in FIG. 3B and FIG. 6A, since the space for providing the leg elastic member F1 is unnecessary, the width W5 of the absorbent main body 5 in the waist direction W is larger than the width W10 of the crotch portion 2 in the waist direction W. Is also small.

Manufacturing method of the pant body 10:
Below, the manufacturing method of the underpants main body 10 to which the said absorptive main body 5 is attached is demonstrated.

Conveying the continuous webs W1, W2;
As shown in FIG. 4B, the first continuous web W1 that becomes the front waistline portion 3 (FIG. 3A) and the second continuous web W2 that becomes the rear waistline portion 4 (FIG. 3A) are parallel to each other and separated from each other. In this state, the continuous webs W1 and W2 are conveyed in the longitudinal direction W.
In the continuous webs W1 and W2, a plurality of waist and hip elastic members F2 and F3 are sandwiched between two nonwoven fabrics 300 and 300 (FIG. 2), and the two nonwoven fabrics 300 and 300 (FIG. 2) Are glued together.

Arranging the continuous elastic member F;
On the other hand, as shown in FIG. 4A, the third continuous web W3 to be the crotch portion 2 (FIG. 3A) is conveyed in the longitudinal direction W along the side edges W3e and W3e of the third continuous web W3. The continuous elastic member F extended | stretched in the longitudinal direction W of the continuous web W3 is arrange | positioned.
That is, the nonwoven fabrics 200 and 200 are bonded to each other while the continuous elastic member F is sandwiched between the nonwoven fabric 200 and the nonwoven fabric 200 forming the third continuous web W3.
Here, in the step of disposing the leg elastic member F1, the continuous elastic member F is intermittently bonded to both side edges W3e and W3e of the third continuous web W3.

Generating crotch part 2;
Thereafter, the third continuous web W3 on which the continuous elastic member F is arranged is successively cut at a predetermined interval in the longitudinal direction W of the third continuous web W3 to generate the crotch portion 2.
In this process, the continuous elastic member F is cut at a portion not bonded to the third continuous web W3. Therefore, the non-bonded portion of the continuous elastic member F that has been stretched shrinks (snaps back) simultaneously with the cutting, and the leg elastic member F1 is formed.

Turning the crotch part 2 by 90 °;
After the crotch part 2 is generated, the crotch part is set so that the extending direction of the leg elastic member F1 of the crotch part 2 is a direction (orthogonal direction) Z orthogonal to the longitudinal direction W of the first and second continuous webs W1, W2. 2 is turned 90 ° with respect to the conveying direction L.
As a method for turning the crotch part 2 by 90 °, for example, a method using a re-pitch turn drum disclosed in Japanese Patent Laid-Open No. 63-317576 can be employed.

Producing a composite web W4;
As shown in FIG. 4B, the crotch portion 2 is placed on the continuous webs W1 and W2 so that the crotch portion 2 straddles the first continuous web W1 and the second continuous web W2 that are conveyed in parallel with each other. The composite web W4 is produced by bonding.
Here, the crotch portion 2 is arranged so that the direction Z in which the leg elastic member F1 extends extends along the orthogonal direction orthogonal to the longitudinal direction W of the first and second webs W1, W2, and the crotch portion 2 is disposed in the first and second webs W1, W1. The composite web W4 is produced by bonding to W2.

A step in which the first surface fastener 21 is disposed;
Thereafter, a plurality of first surface fasteners 21 for detachably mounting the absorbent main body 5 (FIGS. 2, 3B and 3C) are arranged at the four corners of the crotch portion 2.
In addition, the 1st surface fastener 21 may be arrange | positioned at the crotch part 2 before and after the process of cut | disconnecting and producing | generating the crotch part 2 mentioned above.

Folding the composite web W4;
Then, as shown in FIG. 5, the composite web W4 is folded at the crotch portion 2 so that the first continuous web W1 and the second continuous web W2 overlap each other.

Thereafter, the folded composite web W4 is cut one after another so that each pant body 10 includes one crotch portion 2, and the pant body 10 is generated.
Here, simultaneously with the cutting, each end portion 3s of the front waistline portion 3 in the waistline direction W and each end portion 4s of the rear waistline portion 4 in the waistline direction W are joined together, and the barrel shown in FIGS. 1A and 2 A waist opening Wo through which a leg passes and a pair of leg openings Lo through which a leg passes are formed.
The bonding may be performed by, for example, heat sealing or sonic bonding, or may be performed with a hot-melt adhesive.

FIG. 6A shows Example 2.
The crotch part 2 of the pant body 10 of the present embodiment is made of a single nonwoven fabric, and both side edges 2e of the crotch part 2 are folded back so as to wrap the leg elastic member F1, thereby fixing the leg elastic member F1.
Other configurations are the same as those of the first embodiment, and the same reference numerals are given to the same portions or corresponding portions, and the description thereof is omitted.

7A and 7B show Example 3. FIG.
As shown in FIG. 7A, in the front waistline portion 3, the pant body 10 of the third embodiment is provided with a front first fastener 21 on the crotch portion 2 and a rear waistline portion 4 that is not the crotch portion 2. A rear first fastener 21 is provided on the rear side. The first surface fasteners 21 arranged in the rear waistline portion 4 are provided on both sides of the crotch portion 2 in the rear waistline portion 4.

As shown in FIG. 7B, the absorbent main body 5 is formed in a shape that increases from the portion that hits the crotch to the back torso, and the second surface fastener 52 is formed in a portion corresponding to the first surface fastener 21 shown in FIG. 7A. Is provided.
Other configurations are the same as those of the first embodiment, and the same reference numerals are given to the same portions or corresponding portions, and the description thereof is omitted.

7C and 7D show Example 4. FIG.
As shown in FIG. 7C, in the pant body 10 of the fourth embodiment, the first surface fastener 21 is provided not on the crotch portion 2 but on the front waistline portion 3 and the rear waistline portion 4. The first surface fasteners 21 are provided on both sides of the crotch portion 2.

As shown in FIG. 7D, the absorbent main body 5 is formed in an hourglass shape, and a second surface fastener 52 is provided at a portion corresponding to the first surface fastener 21 shown in FIG. 7C.
Other configurations are the same as those of the first embodiment, and the same reference numerals are given to the same portions or corresponding portions, and the description thereof is omitted.

  When the second surface fastener 52 is constituted by a male surface fastener, the male surface fasteners constituting the second surface fastener 52 of the front waistline portion 3, the rear waistline portion 4 and the crotch portion 2 are engaged. The first surface fastener 51 as the female surface fastener may not be provided by forming the inner surface portion with a nonwoven fabric or the like. In addition, a male surface fastener may be employed for the first surface fastener 21 and a female surface fastener may be employed for the second surface fastener 52.

  The present invention is applied to a manufacturing method of a pants-type wearing article and a main body thereof.

1: Pants-type diapers (an example of pants-type wearing articles)
2: Crotch part 3: Front waistline part 4: Rear waistline part 5: Absorbent body 10: Pants body 21: First surface fastener 50: Top sheet 51: Back sheet 52: Second surface fastener C: Core F: Continuous elasticity Member F1: Leg elastic member Lo: Leg opening W: Girth direction Wo: Waist opening W1: First continuous web W2: Second continuous web W3: Third continuous web W4: Composite web

Claims (3)

A front waistline portion covering the front of the wearer's torso and extending in the waistline direction;
A back waistline portion covering the back of the wearer's torso and extending in the waistline direction;
A crotch portion that overlaps the front waistline portion and the rear waistline portion and is joined and extends in the vertical direction perpendicular to the waistline direction and covers the crotch of the wearer,
An detachably mounted on the crotch part, comprising an absorbent main body with a liquid-retaining core sandwiched between a liquid-permeable top sheet and a liquid-impermeable back sheet,
A waist opening through which the body passes and a pair of leg openings through which the legs pass by joining each end of the front waistline in the waistline direction and each end of the rear waistline in the waistline direction. And formed,
Leg elastic members for closely attaching the crotch part to the side surface of the leg in the leg opening extend along the vertical direction at both side edges in the width direction perpendicular to the vertical direction of the crotch part,
Here, the leg elastic member is not provided in the absorbent main body, and is fixed to a member forming the crotch portion ,
Here, the inner surface facing the wearer in at least one of the front waistline portion, the rear waistline portion, or the crotch portion has a surface with which a male fastener can be engaged, and in the backsheet of the absorbent main body The outer surface facing the inner surface is provided with a male fastener that is detachably engaged with the engageable surface,
The leg elastic member is provided between the front waistline part and the back waistline part, and is not provided in the front waistline part and the back waistline part .   In Claim 1, the crotch part extends over the longitudinal direction in the front waistline part over more than half and overlaps the front waistline part,
  And the said crotch part is extended in the said longitudinal direction in the said back waist part over half or more, and has overlapped with the said back waist part, The pants type wearing article characterized by the above-mentioned.   In claim 2, in the portion of the crotch portion that overlaps the front waistline portion and the portion of the crotch portion that overlaps the rear waistline portion, the male surface fastener engages with the engageable surface,
  And the said male face fastener is not arrange | positioned between the said front waist part and the back waist part in the said crotch part, The underpants type wearing article.

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