JP3080942B1 - Disposable pants - Google Patents

Abstract

A rising band for preventing lateral leakage of urine and the like is devised so as to rise effectively. SOLUTION: An elastic yarn 1 for a leg is provided with a crotch portion 5C as a boundary.
0 is divided into 4 parts into the front abdomen 5A side, the back part 5B side, the left leg hole part 5D side and the right leg hole part 5D side, and the outer edge 7b of the rising band 7 is divided into the left leg hole part 5D side and the right leg. The outer edge 7b of the rising band 7 near the crotch portion 5C is adhered to the leg portion by bonding the elastic yarn 10 for leg to the hole portion 5D side so as to be located inside the four-divided end portions 10a to 10d. The elastic thread 10 is not in the state.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to disposable pants in which a rising band for preventing lateral leakage of urine or the like is effectively raised.

[0002]

2. Description of the Related Art Conventionally, in disposable pants and disposable diapers, rising bands (cuffs) which stand up in a crescent shape in a side view are provided on both sides of an absorber in order to prevent lateral leakage of urine and the like. There is.

For example, a disposable pants (first prior art) in an unfolded state schematically shown in FIG. 9A has a front sheet 1A, a back section 1B, a crotch section 1C, and a leg hole section 1D on an exterior sheet 1. The elastic yarns 2 (A, B) for legs are provided along the leg holes 1 D of the exterior sheet 1, and the crotch 1
An absorbent body (not shown) is provided from C to the front abdomen 1A and the back part 1B, and on both sides of this absorbent body, the outside of the rising band material 3 with the rising elastic yarn 4 attached to the inner edge 3a. The edge 3b is adhered. This rising band 3
As shown by a two-dot chain line in FIG. 9B, it is preferable that the inner edge 3a rises so as to fall inward in order to effectively prevent lateral leakage of urine and the like.

In the disposable pants, the leg elastic yarn 2A on the front abdomen 1A side and the leg elastic yarn 2B on the rear back portion 2B side are provided so as to intersect at the crotch portion 1C. The outer edge 3b of the strip 3 is adhered so as to pass through the intersection.

Since the leg elastic yarns 2 (A, B) are adhered to the respective leg holes 1D in an oblique state with respect to the longitudinal center line C, the leg elastic yarns 2 (A, B) are provided. The contraction force of 2 (A, B) is divided into a component force F1 in the length direction and a component force F2, F3 in the width direction, and acts on the exterior sheet 1. For this reason, as shown in FIG. 9B, both the component forces F2 and F3 act in the inward and outward directions in the width direction of the outer edge 3b at the central portion in the length direction of the rising band material 3. As a result, the outer edge 3b of the rising band 3 is also pulled inward, and as a result, the inner edge 3a may rise so as to fall outward as shown by a solid line, so that lateral leakage of urine and the like can be effectively prevented. There was a risk of disappearing.

For this reason, as in the disposable pants shown in FIG. 10 (second prior art), the crotch 1C of the leg elastic yarn 2A on the front abdomen 1A side and the leg elastic yarn 2B on the rear back 2B side. By removing the crossing part, the component force F2 that pulls the outer edge 3b of the rising strip 3 inward is eliminated, so that the inner edge 3a can rise so as to fall inward.

[0007]

However, the elastic yarns 2A and 2B for the legs on both leg hole portions 1D are continuous in a V-shape in the length direction on the front abdomen 1A side and the back back 1B side. Since the V-shaped inner angle is 90 to 170 degrees, the outer edge 3 of the central portion in the longitudinal direction of the rising strip 3 is formed.
b is wrinkled as a result of shrinkage, the inner edge 3a of this portion
Since the shrinking force of the rising elastic yarn 4 is weakened, there is a possibility that the adhesiveness is reduced and lateral leakage of urine or the like cannot be effectively prevented.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned conventional problems, and it is an object of the present invention to provide disposable pants in which a rising band for preventing lateral leakage of urine or the like is effectively raised. It is the purpose.

[0009]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention comprises an exterior sheet having an anterior abdomen, a back part, a crotch part, and a leg hole formed therein. Along with the elastic line for the leg in an oblique state with respect to the center line in the length direction along, an absorber is provided from the crotch to the front abdomen and the back, and on both sides of this absorber, In a disposable pants in which an outer edge of a rising band material in which an elastic yarn for rising is attached to an inner edge is adhered, the elastic yarn for leg is adhered between an outer sheet and an inner sheet of an exterior sheet. At the same time, it is divided into four parts by the crotch part into the front abdomen side, the back part side, the left leg hole side, and the right leg hole side. On the other hand, the absorber is formed in a region so that the absorber is narrower than the width of the non-adhesion region. The disposable pants are characterized in that the outer edges of the rising band material are bonded to both sides of the absorber so as to be located inside the four-divided ends. It is.

According to the present invention, the elastic yarn for the leg is divided into four parts at the crotch part into the front abdomen side, the back part, the left leg hole part, and the right leg hole part. The area surrounded by the end is formed as a non-adhesion area, and the absorber is set to be smaller than the width of the non-adhesion area. 4 of the elastic yarn for each leg with the part side
By adhering to both sides of the absorber so that it is located inside the split end, the elastic yarn for the leg contracts in the direction of each split end, and the outer edge of the rising band near the crotch The portion has no leg elastic yarn at all.

Therefore, unlike the first prior art, a component force for pulling the outer edge of the rising band material inward does not act, so that the inner edge easily rises so as to fall inward and the second prior art. Unlike the rise band, the outside of the central part in the length direction of the rise band is not shrunk and no wrinkles are generated, and the contraction force of the rise elastic yarn on the inner edge of this part is not weakened, so the rise band is more effective As a result, the adhesiveness is improved.

Preferably, the non-adhesion region has a width of 50 to 100 mm and a length of 7 to 50 mm.

[0013]

Embodiments of the present invention will be described below in detail with reference to the drawings.

FIG. 1 is a front view of the disposable pants in a developed state, and FIG. 2 is an exploded perspective view of the disposable pants. In addition,
FIG. 1 is a diagram when each of the elastic yarns 8, 9, and 10 described below is in an extended state. In use, each of the elastic yarns 8, 9, and 1 is used.
Gathering is formed on the disposable pants by the shrinkage of 0, so that the disposable pants shrink in three dimensions.

As shown in FIG. 2, the disposable pants basically include an exterior sheet 5 composed of an outer backsheet 5a and a skin side topsheet 5b, and an absorber 6
And a pair of rising band members 7. In addition, the rising band material 7 in FIG. 1 shows a state before rising on the left side and a state after rising on the right side.

The back sheet 5a and the top sheet 5
b is formed of a nonwoven fabric made of synthetic resin fiber, and leg holes 5D are formed on both sides of the crotch 5C between the front abdomen 5A and the rear back 5B.

The back sheet 5a and the top sheet 5b
A plurality of waist elastic yarns 8 and body fitting elastic yarns 9 are adhered to the front abdomen 5A and the rear back 5B between them in a stretched state in the width direction.

The left and right outer edges of the crotch portion 5C are provided with a plurality of leg elastic yarns 10 (A) in a straight line (C-shape) oblique to the longitudinal center line along the leg hole 5D. , B)
Are adhered in an extended state. As shown in FIG. 7A, the leg elastic yarn 10A on the front abdomen portion 5A side and the leg elastic yarn 10B on the back back portion 5B side are respectively left and right. It extends in a diagonal direction along the leg hole 5D, extends in a U-turn state at a position not exceeding the center line C1 of the crotch portion 5C, and is a quarter of the elastic yarn 10 (A, B) for legs described later. Stump 10a, 1
The regions surrounded by 0b, 10c, and 10d are non-adhesion regions S
Is formed. The non-adhesive area S may be set to, for example, about 50 to 100 mm in the width direction and about 7 to 50 mm in the length direction according to the size of the disposable pants.

After the leg elastic yarns 10 (A, B) are bonded in a predetermined bonding region, the leg elastic yarns 10 (A, B) in the non-bonding region S are separated from the crotch portion 5C. ,
When the front abdomen 5A side, the back back side 5B, the left leg hole side 5D, and the right leg hole side 5D are cut (cut) at four points, the leg elastic yarns 10 (A, B) contract at each of the cut parts. As a result (snap back), quadrant cut ends 10a, 10b, 10c, and 10d are formed.

The absorber 6 is bonded so as to extend from the crotch portion 5C on the upper surface of the top sheet 5b to the front abdomen 5A and the back portion 5B.

As shown in detail in FIG. 3, the absorbing portion 6a of the absorber 6 is a mixture of natural pulp fibers, synthetic resin fibers, and highly water-absorbent resin materials or the like, and is formed into a rectangular flat body. It is molded and the outer periphery is wrapped in tissue paper. The absorbing portion 6a is composed of a liquid-permeable sheet 6b made of a nonwoven fabric made of synthetic resin fiber and a liquid-impermeable sheet 6 made of a synthetic resin film.
c, both sides 6d of the liquid-permeable sheet 6b
Is folded downward along both side surfaces of the absorbing portion 6a, and is bonded to both side portions 6e of the liquid impermeable sheet 6c. The width of the absorber 6 is the same as the elastic yarn 10 for the leg.
(A, B) The width of the non-adhesion region S (the elastic yarn 10 for the leg)
(The inner width of the four-section cut ends 10a to 10d of (A, B)).

The pair of rising band members 7 are formed of a nonwoven fabric made of synthetic resin fiber which has been subjected to a water-repellent treatment, have a length substantially equal to that of the absorber 6, and have an inner edge 7a formed on the upper portion of the absorber 6. And the outer edge 7b is bonded to the upper surface of both sides 6d of the liquid-permeable sheet 6b of the absorber 6. The front end portion 7c and the rear end portion 7d of the rising band 7
As shown in FIG. 1, is bonded over the upper surfaces of the front end portion and the rear end portion of the absorber 6 and the exterior sheet 5 so as not to stand up. The rising elastic yarn 11 is adhered to the inner folded portion of the inner edge 7a of the rising band 7 in a state of being elongated in the length direction.

The rising elastic yarn 11 and each of the elastic yarns 8 to 10 are a band-like or thread-like natural rubber or a synthetic rubber, and the rising gathers and the leg gathers are formed by the contracting force of the elastic yarns 8 to 11. Becomes naturally formed.

The disposable pants shown in FIG. 1 (the same applies to FIGS. 7A and 7B) are manufactured continuously in the width direction W, and the cutting line K
, The front abdomen 5A and the back part 5B are overlapped with the crotch 5C as a boundary, and as shown in FIG.
Although the pants type is obtained by side-adhering c, a diaper type can be obtained by attaching a fastening tape to both sides of the back part 5B.

In the disposable pants constructed as described above, the leg elastic yarn 10 is formed at the crotch 5C.
(A, B) the front abdomen 5A side, the back part 5B side and the left leg hole 5
D is divided into 4 parts on the D side and the right leg hole part 5D side.
Of the elastic yarns 10 (A, B) for the legs of the left leg hole portion 5D side and the right leg hole portion 5D side.
Since it is glued so that it is located inside from 10d,
There is no leg elastic thread 10 (A, B) on the outer edge 7 b of the rising band 7 near the crotch 5 C.

Therefore, as shown in FIGS. 3 and 4,
A longitudinal component force F is applied to the outer edge 7b of the rising band material 7.
1 and the component force F3 in the width direction act, but the component force F in the width direction
3 acts to pull the outer edge 7b outward, so that the inner edge 7a easily rises so as to fall inward, and the outside of the central portion in the longitudinal direction of the rising strip 7 is not shrunk, so that the wrinkles are not formed. Does not occur, and the contracting force of the rising elastic thread 11 on the inner edge 7a of this portion is not weakened, so that the adhesiveness is improved, so that lateral leakage of urine and the like can be effectively prevented.

The elastic yarns 10 (A, B) for the legs 4
Since the area surrounded by the divided ends 10a to 10d is formed in the non-adhesion area S, the leg elastic yarns 10 (A, B)
Is shrunk in the direction of each of the split ends 10a to 10d (snap back), and there is no leg elastic yarn 10 (A, B) at the outer edge 7b of the rising band 7 near the crotch 5C. Therefore, the rising band 7 rises more effectively, and lateral leakage of urine and the like can be more effectively prevented.

In the embodiment shown in FIGS. 1 and 7 (a), the leg elastic yarns 10 (A, B) are extended in a straight line obliquely to the longitudinal center line along the leg holes 5D, respectively. As shown in FIG. 7B, the leg elastic yarns 10 (A, B) may be bonded in a curved shape (oblique shape) as shown in FIG.

As shown in FIG. 8, in the case of disposable pants which are manufactured continuously in the length direction L, the elastic yarns 10 (A, B) for the legs are inserted into the left and right leg holes 5D. Along the center line in the longitudinal direction, the adhesive may be bonded in an extended state so as to be slightly oblique and straight.

FIG. 6 shows a modified example. In this modified example, the front end portion 7c of the rising band member 7 which is bonded over the upper surface of the front end portion and the rear end portion of the absorber 6 and the exterior sheet 5 is bonded.
The nonwoven fabric 12 is bonded so as to cover the rear end portion 7d.

Further, both side portions 6e of the liquid-impermeable sheet 6c of the absorber 6 are folded upward along both side surfaces of the absorbing portion 6a, and both side portions 6d of the liquid-permeable sheet 6b are folded.
And the outer edge 7b of the rising band 7 is bonded to both side portions 6d.

[0032]

As is clear from the above description, according to the present invention, with the crotch as a boundary, the elastic yarns for the legs are provided on the front abdomen side, the back side, the left leg hole side, and the right leg hole side. And divided into 4
The area surrounded by the split end is formed in the non-adhesive area, and the absorber is set to be smaller than the width of the non-adhesive area. The elastic yarns for legs are bonded to both sides of the absorber so as to be located inside the four-divided ends of the elastic yarns for legs with the leg hole side. , And there is no leg elastic yarn at the outer edge of the rising band near the crotch.

Therefore, no component force acts to pull the outer edge of the rising band inward, so that the inner edge easily rises so as to fall inward, and the central portion of the rising band in the lengthwise direction is reduced. As the outer side is not shrunk and no wrinkles are generated and the shrinking force of the elastic yarn for rising of the inner edge of this part is not weakened, the rising band material rises more effectively and the adhesion is improved, Lateral leakage of urine and the like can be more effectively prevented.

The non-adhesion region has a width direction of 50 to 100.
mm and the length direction are preferably 7 to 50 mm (claim 2), and this area can be set according to the size of the disposable pants.

[Brief description of the drawings]

FIG. 1 is a front view of a disposable pants according to the present invention in an unfolded state.

FIG. 2 is an exploded perspective view of the disposable pants.

FIG. 3 is a perspective view of a main part of the disposable pants in use.

FIG. 4 is a side view of the disposable pants in use.

FIG. 5 is a front view of the disposable pants.

FIG. 6 is a perspective view of a main part of a modification of the absorber.

7A and 7B show an elastic yarn for a leg, wherein FIG. 7A is a plan view of an oblique straight line (C shape), and FIG. 7B is a plan view of a curved line.

FIG. 8 is an oblique linear plan view of the leg elastic yarn.

FIG. 9 is a first prior art disposable pants,
(A) is a perspective view, (b) is a side view of the rising state of the rising band material.

FIG. 10 is a perspective view of a second prior art disposable pants.

[Explanation of symbols]

 Reference Signs List 5 exterior sheet 5A front abdomen 5B back back 5C crotch 5D leg hole 5a back sheet 5b top sheet 6 absorber 7 rising band 7a inner edge 7b outer edge 10 elastic yarn for legs 10a to 10d split end 11 Elastic thread S Non-adhesive area

Continuation of front page (56) References JP-A-10-277091 (JP, A) JP-A-6-254117 (JP, A) JP-A-9-299398 (JP, A) JP-A-3-280951 (JP) , A) Hikaru Hei 5-84322 (JP, U) (58) Fields investigated (Int. Cl. ⁷ , DB name) A61F 13/49-13/496 A61F 5/44

Claims (2)

(57) [Claims] 1. An exterior sheet having an anterior abdomen, a back part, a crotch part, and a leg hole formed therein. An elastic yarn is attached, and an absorber is provided from the crotch portion to the front abdomen and the back portion. In the disposable pants in which an outer edge is adhered, the elastic yarn for the leg is provided between the outer sheet of the outer sheet and the inner sheet.
Together are bonded between the surface side sheet, and a crotch portion as a boundary, is 4 divided into a front part side and back part side and the left leg bore side and right leg hole portion side, the 4 division end The area enclosed by
While being formed in the adhesion area, the absorber absorbs the non-adhesive area.
Together is set to be narrower than the width of the band, the outer edge of the rising strip material, that is bonded to both sides of the absorbent body so that the inner position than the 4 divided end Disposable pants featured. 2. The non-adhesive region has a width direction of 50 to 10.
The disposable pants according to claim 1 , wherein the length is 0 mm and the length direction is 7 to 50 mm .