JP3398094B2 - Disposable pants - Google Patents

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 the tightness of the leg holes is secured and the manufacturing equipment can be simplified.

[0002]

2. Description of the Related Art Generally, disposable pants and disposable diapers are provided with an exterior sheet having a front abdomen, a back portion, a crotch portion, and leg holes, and the crotch portion of the exterior sheet extends from the crotch portion to the front abdominal portion and the back portion. An absorber is provided across.

On both sides of this absorbent body, the outer edges of the rising band member having the elastic threads for rising on the inner edge are adhered. This rising band material is for standing up in a crescent shape in a side view to prevent lateral leakage of urine and the like.

Also, elastic threads for the waist in the width direction are attached to the upper portions of the front abdomen and the back of the exterior sheet, and elastic threads for body fitting in the width direction are attached to the lower portions of the front abdomen and the back. Elastic legs are attached along the leg holes.

The leg elastics are additionally provided along the leg holes so that urine and the like leaked from the rising belt material further leaks to the outside from the leg holes and stains clothes and the like. It is supposed to prevent this.

[0006]

However, in practice, it has been confirmed that the side leakage of urine and the like is sufficiently prevented by devising the rising band material.

By the way, when the leg elastic thread is provided along the leg hole, the flap portion of the leg hole located outside the leg elastic thread is only flapping, so that the skin There is no adhesion to the side and the wearing feeling is bad,
There is a problem that it does not look good.

In addition, in the continuous transverse flow manufacturing process, when the leg elastic yarns are continuously provided along the leg holes, it is necessary to make the leg elastic yarns meander along the leg holes. There is a problem that the equipment becomes complicated and the manufacturing speed cannot be increased.

Further, although the rising band material can sufficiently prevent lateral leakage of urine and the like, since the elastic thread for the leg is conventionally provided additionally, the material cost and the manufacturing process are increased and the cost is increased. There is a problem of being up.

The present invention has been made to solve the above-mentioned conventional problems, and an object of the present invention is to provide disposable pants in which the adhesion of the leg holes is secured and the manufacturing equipment can be simplified. To do.

[0011]

In order to solve the above-mentioned problems, the present invention comprises an exterior sheet having a front abdomen, a rear back, a crotch and leg holes, and a front abdomen of the exterior sheet. An elastic thread for waist is attached to the upper part of the rear part in a stretched state in the width direction, and elastic threads for body fitting are attached to the lower part of the front abdomen and the rear part in a stretched state in the width direction, An absorbent body is provided extending from the crotch region to the front abdomen and the back region, and on both sides of the absorbent body, the outer edges of the rising band with elastic threads for rising in the lengthwise direction are attached to the inner edges. In disposable pants with bonded edges, the leg elastics are not provided along the leg holes, and instead of the leg elastics, the body fitting elastics are used over the entire crotch area. The ends of the body-fitting elastic threads are aligned with the leg holes at predetermined intervals in the vertical direction. It is intended to provide a disposable pants according to claim being additionally provided in a stretched state in the width direction so as to face the edge.

According to the present invention, basically, the leg elastic thread is not provided along the leg hole. Then, instead of the elastic thread for legs, the elastic thread for body fitting is additionally added, and the ends of the elastic thread for body fitting are the edges of the leg holes at predetermined intervals in the length direction over the entire crotch portion. It is attached in a stretched state in the width direction so as to face the. Here, the "entire region of the crotch portion" means a region substantially sandwiched by the recessed portions of the leg hole portions.

Due to the inward contracting force of the body-fitting elastic thread additionally attached to the crotch portion, the entire flap portion of the leg hole portion comes into close contact with the wearer's skin side.

According to a second aspect of the present invention, if all the body-fitting elastic threads are attached in parallel,
Due to the contraction force of the elastic thread for body fitting inward in the width direction, the entire exterior sheet comes into close contact with the wearer's skin side.

According to a third aspect of the present invention, if all or part of each of the body-fitting elastic threads is attached to the V-shape or the arc-shape, the body-fitting elastic threads extend inward in the width direction. In addition to the contraction force of, the contraction force inward in the width direction also acts.

When the V-shaped or arc-shaped portions of the body-fitting elastic threads are parallel or non-parallel to each other, the body-fitting elastic threads extend inward in the width direction. The contraction force can be adjusted.

According to a fifth aspect of the present invention, the elastic thread for body fitting is wholly or partially divided into left and right portions at a central portion in the width direction. All or part of the elastic thread for use is attached so that the contraction force becomes low in the central portion in the width direction,
In particular, when the above-mentioned part is a portion which overlaps with the absorber as in claim 7, the absorber is not deformed by the contracting force of the elastic thread for body fitting.

When the body-fitting elastic yarns are arranged at equal or unequal intervals and the contracting forces are equal or unequal, the width of each body-fitting elastic yarn is set. The contraction position and contraction force inward in the direction can be adjusted.

[0019]

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

FIG. 1 is a front view of the disposable pants in a developed state, FIG. 2 is an assembled perspective view of the disposable pants, and FIG. 3 is a sectional view taken along the line AA of FIG.

As shown in FIG. 3, the disposable pants described above have an outer sheet 5a on the outer surface side and an inner sheet 5b on the skin surface side.
And an absorber 6 and a pair of rising strips 7. The rising strip 7 in FIG. 3 shows the state after rising, and the rising strip 7 in FIG. 1 shows the state before rising.

The outer sheet 5a and the inner sheet 5b are made of synthetic resin fiber non-woven fabric, and leg holes 5D are formed on both sides of the crotch portion 5C between the front abdominal portion 5A and the rear back portion 5B. The outer sheet 5a and the inner sheet 5
At least one layer of b is preferably formed of a hydrophobic nonwoven fabric.

A plurality of waist elastic yarns 8 are attached by adhesion in the widthwise stretched state to the upper portions of the front abdominal portion 5A and the rear back portion 5B between the outer sheet 5a and the inner sheet 5b. At the same time, a plurality of body-fitting elastic threads 9 (A) are attached to the lower portions of the front abdominal portion 5A and the rear back portion 5B in an extended state in the width direction by adhesion.

Further, the outer sheet 5a and the inner sheet 5 are
A plurality of body-fitting elastic threads 9 (B) are added to the crotch portion 5C between b and the body-fitting elastic threads 9 (A) in parallel and at equal intervals in a stretched state in the width direction by adhesion. Is attached to the site.

In addition, in FIG. 1, FIG. 2 and FIG. 4 and subsequent figures, the elastic yarns 8 and 9 (A, B) are drawn by solid lines for easier understanding, but the outer sheet 5a and the inner sheet 5b are It will appear as a broken line because it will be installed between them.

On the other hand, the absorber 6 is made up of the inner sheet 5
It is adhered so as to extend from the crotch portion 5C on the upper surface of b to the front abdominal portion 5A and the rear back portion 5B.

As shown in detail in FIG. 3, the absorbent portion 6a of the absorbent body 6 is made by mixing or laminating natural pulp fibers, synthetic resin fibers, superabsorbent resin materials, etc., and has a rectangular flat shape. It is molded and wrapped around with thin paper. The absorbent core 6a includes a liquid-permeable sheet 6b made of a synthetic resin fiber nonwoven fabric and a liquid-impermeable sheet 6 made of a synthetic resin film.
Both sides 6 of the liquid-impervious sheet 6c are bonded to the liquid-permeable sheet 6c.
The d is folded back along both side surfaces of the absorbent core 6a and adhered to both side portions 6e of the liquid permeable sheet 6b.

The pair of rising strips 7 are made of water-repellent synthetic resin fiber non-woven fabric and have substantially the same length as that of the absorber 6, and the inner edge 7a has an upper portion of the absorber 6. The outer edge 7b is adhered to the upper surfaces of both side portions 6e of the liquid-permeable sheet 6b of the absorbent body 6. The front end portion 7c and the rear end portion 7d of the rising strip 7 are
Is adhered to the front end portion and the rear end portion of the liquid-permeable sheet 6b of the absorbent body 6 so as not to stand up. At the inner folded portion of the inner end edge 7a of the rising band 7, a rising elastic yarn 10 is attached by adhesion in a state of being elongated in the length direction.

The rising elastic thread 10 and the elastic threads 8 and 9 are made of natural rubber or synthetic rubber in the form of strips or threads, and the gathering force is naturally formed by the contracting force of the elastic threads 8 to 10. Become.

The disposable pants of FIG. 1 are continuously manufactured in the width direction W, cut along the cutting line K, and then the front abdomen 5A and the back back 5B are overlapped with each other with the crotch 5C as a boundary. As shown in FIG. 2, both sides 5c are side-bonded to form a pants type, but a diaper type can be obtained by attaching the fastening tapes 11 (see FIG. 1) to both sides of the back part 5B.

The disposable pants constructed as described above are
Basically, unlike the related art, the leg elastic thread is not provided along the leg hole portion 5D. Then, in place of the conventional leg elastic thread, in addition to the body fitting elastic thread 9 (A) attached to the lower portions of the front abdominal portion 5A and the rear back portion 5B, the body fitting elastic thread is also added to the crotch portion 5C. 9 (B) is attached.

Therefore, due to the inward contracting force in the width direction W of the body-fitting elastic thread 9 (B) additionally attached to the crotch portion 5C, the entire flap portion 5d of the leg hole portion 5D is worn by the wearer. Since it comes into close contact with the skin side, the wearing feeling is improved, and the flap portion 5d does not flicker as in the conventional case, so that it looks good.

Further, in the manufacturing process, the step of attaching the elastic yarn for legs as in the prior art is not necessary at all,
Since the production equipment can be simplified and the production speed can be increased, the productivity is improved. Further, since it is not necessary to attach the elastic yarn for the leg, the material cost and the manufacturing process can be reduced and the cost can be reduced.

Furthermore, since at least one layer of the exterior sheet 5 is formed of a hydrophobic nonwoven fabric, exudation of urine and the like can be prevented and the skin feels good. Also, the left and right side portions of the liquid-impermeable sheet 6c of the absorbent body 6 are connected to the liquid-permeable sheet 6b.
The outer edge 7b of the rising strip 7 is adhered to the upper surface of both side portions 6e of the liquid-permeable sheet 6b located right above the both side portions 6d, so that urine or the like rises up.
Since it flows down directly to the absorbent core 6a by being guided by, it is possible to reliably prevent lateral leakage of urine or the like.

Furthermore, the elastic thread 9 for each body fit
Since all of (A, B) are attached in parallel at equal intervals, the entire exterior sheet 5 is worn by the wearer by the contracting force of each body-fitting elastic thread 9 (A, B) inward in the width direction. As it comes into close contact with the skin side of the item, the stiff feeling peculiar to disposable pants is reduced and the wearing feeling is improved.

4 and below are elastic threads 9 for each body fit.
(A, B) is an embodiment in an attached state. Although only the front abdomen 5A is shown, the back back 5B is
And may be asymmetric.

In FIG. 4A, all the body-fitting elastic threads 9 (A, B) are attached to the V-shape at equal intervals.
FIG. 4B shows elastic threads 9 (A, B) for each body fit.
Are all attached at equal intervals in a downward arc shape.

FIG. 4 (c) shows that the body-fitting elastic threads 9 (A) of the front / rear abdomen 5A, 5B among the body-fitting elastic threads 9 (A, B) are equally spaced. 8 is parallel to 8 but elastic thread 9 for body fitting of crotch portion 5C
(B) is attached to the V type. FIG. 5A shows that the body-fitting elastic threads 9 (A) of the front / rear abdomen 5A, 5B are parallel to the waist elastic thread 8 among the body-fitting elastic threads 9 (A, B) at equal intervals. However, the elastic thread 9 (B) for body fitting of the crotch portion 5C is attached in a downward arc shape.

FIG. 5B corresponds to FIGS. 4A and 4B, in which all the body-fitting elastic threads 9 (A, B) are attached at equal intervals in an inverted V shape. There is. All of the body-fitting elastic threads 9 (A, B) may be attached at equal intervals in an upward arc shape.

FIG. 5 (c) corresponds to FIGS. 4 (c) and 5 (a), and the elastic threads 9 for body fitting are equally spaced.
Of (A, B), the body-fitting elastic thread 9 (A) of the front / rear abdomen 5A, 5B is parallel to the waist elastic thread 8 but the body-fitting elastic thread 9 (B) of the crotch portion 5C. Is attached in an upward arc shape. In addition, among the body-fitting elastic threads 9 (A, B) at equal intervals, the front and rear abdominal parts 5A, 5
The body-fitting elastic thread 9 (A) of B is parallel to the waist elastic thread 8; however, the body-fitting elastic thread 9 (B) of the crotch portion 5C may be attached in an inverted V shape.

FIGS. 4 (a)-(c) and 5 (a)-
In each embodiment of (c), all or part of each body-fitting elastic thread 9 (A, B) is attached to the V-shape or the arc-shape, so that each body-fitting elastic thread 9 is formed.
In addition to the contraction force inward in the width direction of (A, B), the contraction force inwardly in the width direction also acts, so that it comes into close contact with the skin side along the wearer's body shape and the feeling of wearing is improved. To improve.

FIG. 6 (a) is shown in FIG. 4 (a) (c) and FIG.
Corresponding to (b), each elastic thread 9 for body fitting
The V-shaped portions (A, B) are non-parallel to each other, that is, the body-fitting elastic threads 9 (A, B) are attached so that the V-angle becomes an acute angle toward the crotch portion 5C. The body-fitting elastic threads 9 (A) of the front / rear abdomen 5A and 5B are attached in parallel, and the body-fitting elastic threads 9 of the crotch portion 5C are provided.
(B) may be attached to the non-parallel V type. Further, each body-fitting elastic thread 9 (A, B) may be reverse V-shapes that are non-parallel to each other.

FIG. 6 (b) shows FIGS. 4 (b) and 5 (a).
Corresponding to (c), each elastic thread 9 for body fitting
The downward arcuate portions (A, B) are non-parallel to each other, that is, the body-fitting elastic threads 9 (A, B) are attached so that the arc radius becomes smaller toward the crotch portion 5C. The elastic threads 9 for body fitting of the front and rear abdomen 5A, 5B
(A) may be provided in parallel, and the body-fitting elastic thread 9 (B) of the crotch portion 5C may be provided in a downward arc shape. Also, each body-fitting elastic thread 9 (A, B)
It may be an upward arc type that is not parallel to each other.

In each of the embodiments shown in FIGS. 6 (a) and 6 (b), the contraction force inward in the width direction of each body-fitting elastic thread 9 (A, B) is changed by changing the V angle or the arc radius. Since it can be adjusted, it becomes closer to the skin side along the wearer's body shape, so that the wearing feeling is further improved.

In FIG. 7A, all of the body-fitting elastic yarns 9 (A, B) are divided into left and right parts at the center in the width direction. In addition, FIG. 7B shows a part of each of the body-fitting elastic threads 9 (A, B), that is, a portion that overlaps with the absorbent body 6, which is divided into left and right portions at a central portion in the width direction. Due to this division, each body-fitting elastic thread 9 (A, B)
Snap back to the part where the adhesive is not applied.

FIG. 7 (c) is a modification of FIG. 7 (b), in which the body-fitting elastic thread 9 (B) of the crotch portion 5C has an upward arc shape. In FIG. 8A, all of the body-fitting elastic threads 9 (A, B) are downward arc-shaped.

FIG. 8 (b) is a modification of FIG. 7 (b) in which the body-fitting elastic thread 9 (B) of the crotch portion 5C is V-shaped. Note that, as in FIG. 8A, all the body-fitting elastic threads 9 (A, B) may be reverse V-shaped.

7 (a) (b) (c) and FIG. 8 (a)
In each of the embodiments of (b), the absorbent body 6 is not deformed by the contracting force of the body-fitting elastic thread 9 (B) of the crotch portion 5C, so that the adherence to the wearer is maintained and the absorbability is adversely affected. Will not occur.

Further, as shown in FIG. 9 (a), the absorber 6
Elastic threads 9 (A,
It may be attached so that the contraction force of B) is low (for example, the contraction force is zero). In this case, the contracting force of each body-fitting elastic thread 9 (A, B) is exerted at the portion T that does not overlap the absorber 6. In this embodiment, FIG.
Since the body-fitting elastic threads 9 (A, B) are not divided as in the respective embodiments of (a), (b), (c), and FIGS. 8 (a), (b), the dividing step is unnecessary and the production is performed. It is possible to improve productivity and reduce costs.

As shown in FIG. 9B, the intervals between the body-fitting elastic threads 9 (A, B) are not equal, that is, the intervals are narrowed. Also, each body fit elastic thread 9
The contraction forces of (A, B) may be made non-uniform (for example, only the upper part is strong or only the crotch part is strong). In this case, the contraction position and contraction force of the body-fitting elastic threads 9 (A, B) inward in the width direction can be adjusted. As described above, when the elastic threads 9 (A, B) for body fitting are not equidistantly spaced and / or the contracting force is not uniform, it is possible to obtain a preferable adhesion that matches the body part of the wearer, and the feeling of wearing Is improved.

The elastic threads 9 (A,
When B) is equally spaced and / or the contraction force is uniform, the appearance of the disposable pants is improved and the disposable pants are evenly adhered along the wearer's body shape.

[0052]

As is clear from the above description, the present invention basically does not provide elastic legs for legs along the leg holes, but instead of the elastic yarns for legs, replaces the body fit with the body fit. Elastic yarns for body are additionally provided at predetermined intervals in the lengthwise direction over the entire crotch portion so as to extend in the width direction so that the ends of the body-fitting elastic yarns face the edges of the leg holes. Therefore, due to the inward contraction force of the elastic thread for body fitting additionally attached to the crotch portion, the entire flap portion of the leg hole portion comes into close contact with the wearer's skin side. The feeling of wearing is improved, and the flap part does not flicker, so it looks good.

Further, in the manufacturing process, since the step of attaching the leg elastic yarn is not necessary at all, the manufacturing facility can be simplified and the manufacturing speed can be increased, thereby improving the productivity. Further, since it is not necessary to attach the elastic yarn for the leg, the material cost and the manufacturing process can be reduced and the cost can be reduced.

If the exterior sheet is composed of two or more layers of nonwoven fabric made of synthetic resin fiber and at least one layer is formed of hydrophobic nonwoven fabric, exudation of urine and the like can be prevented and the skin feels good. Further, the absorbent body is configured such that the absorbent core is housed between the liquid-permeable sheet and the liquid-impermeable sheet, and the left and right side portions of the liquid-impermeable sheet are folded back to the liquid-permeable sheet side, and the folded portion is If the outer edge of the rising strip is adhered, urine and the like is guided by the rising strip and flows directly down to the absorbent core, so that side leakage of urine and the like can be reliably prevented.

When all the body-fitting elastic yarns are attached in parallel, as in claim 2, the shrinkage force of the body-fitting elastic yarns inward in the width direction causes
Since the entire exterior sheet comes into close contact with the wearer's skin side, the rough feeling peculiar to the disposable pants is reduced and the wearing feeling is improved.

If all or part of each body-fitting elastic thread is attached to the V-shape or the arc-shape, the body-fitting elastic thread extends inward in the width direction. In addition to the contraction force, the contraction force inward in the width direction also acts, so that it comes into close contact with the skin side along the wearer's body shape, so that the wearing feeling is further improved.

When the V-shaped or arc-shaped portions of the body-fitting elastic threads are parallel or non-parallel to each other, the body-fitting elastic threads shrink inward in the width direction. Since the force can be adjusted, the skin feels closer to the skin side along the wearer's body shape, further improving the wearing feeling.

According to a fifth aspect, all or part of each body-fitting elastic thread is divided into right and left portions at a widthwise central portion, or, as in the sixth aspect, each of the body-fitting elastic threads. All or part of the elastic yarn is attached so that the contraction force becomes low at the central portion in the width direction, and particularly, as in claim 7, the part is a portion overlapping the absorber. In such a case, the absorber is not deformed by the contracting force of the body-fitting elastic thread, so that the close contact with the wearer is maintained and the absorbability is not adversely affected. In particular,
According to the structure of claim 6, since the body-fitting elastic yarn is not divided, the dividing step is unnecessary, and the productivity can be improved and the cost can be reduced.

If the elastic threads for body-fitting are arranged at equal or unequal intervals and the contracting force is equal or unequal, the elastic threads for body-fitting in the width direction can be defined. Since the inward contraction position and contraction force can be adjusted, when the intervals and / or the intervals are uniform, the appearance of the disposable pants is improved and the disposable pants evenly adhere to the wearer's body shape. In addition, when the intervals are not equal and / or non-uniform, preferable adhesion can be obtained according to the body part of the wearer, and the wearing feeling is improved.

[Brief description of drawings]

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

FIG. 2 is a perspective view of the disposable pants in an assembled state.

3 is a cross-sectional view taken along the line AA of FIG.

4 (a) to 4 (c) are front views of modified examples of an attached state of elastic threads for body fitting.

5 (a) to 5 (c) are front views of modified examples of an attached state of elastic threads for body fitting.

6 (a) and 6 (b) are front views of a modified example of an attached state of elastic threads for body fitting.

7 (a) to 7 (c) are front views of modified examples of an attached state of elastic threads for body fitting.

8 (a) and 8 (b) are front views of a modified example of an attached state of elastic threads for body fitting.

9 (a) and 9 (b) are front views of a modified example of an attached state of elastic threads for body fitting, respectively.

[Explanation of symbols]

5 Exterior sheet 5A front abdomen 5B back 5C crotch 5D leg hole 5a outer sheet 5b inner sheet 6 absorber 7 Stand-up strips 7a inner edge 7b outer edge 8 Elastic thread for waist 9 (A, B) Elastic thread for body fit

Continuation of front page (56) Reference JP-A-11-128267 (JP, A) JP-A-6-254117 (JP, A) JP-A-4-28364 (JP, A) JP-A-11-36103 (JP , A) JP-A-61-132601 (JP, A) Actual development 1-89904 (JP, U) Special table 10-513070 (JP, A) Special table 5-502809 (JP, A) (58) Fields surveyed (Int.Cl. ⁷ , DB name) A61F 13/15-13/84 A61F 5/44

Claims (8)

(57) [Claims] 1. An outer sheet having a front abdomen, a back portion, a crotch portion, and leg holes formed therein. Elasticity for waist is stretched in the width direction on the upper portion of the front abdomen and the back portion of the outer sheet. Threads are attached and extend in the width direction at the lower part of the front abdomen and back
In this state, the body-fitting elastic thread is attached, and the absorbent body is provided from the crotch region to the front abdomen and the back region, and both sides of the absorbent body are stretched in the longitudinal direction at the inner edges. In the disposable pants in which the outer edge of the rising strip to which the elastic yarn for rising is attached is adhered , the elastic yarn for leg is not attached along the leg hole portion,
Replace the elastic thread for the bag with the elastic thread for the body fit.
Body part at a specified interval in the length direction over the entire area.
In the width direction so that the end of the elastic thread for
Disposable pants that are attached in an extended state . 2. The disposable pants according to claim 1, wherein all of the elastic threads for body fitting are attached in parallel. 3. The body-fitting elastic thread is wholly or partially attached to a V-shape or an arc-shape.
Disposable pants described in. 4. The disposable pants according to claim 3, wherein the V-shaped or arc-shaped portions of the elastic threads for body fitting are parallel or non-parallel to each other. 5. The disposable pants according to any one of the above each body fitting elastic yarn of all or claims 1 at the central portion is divided into left and right part of the width direction 4. 6. according to any one of claims 1 to 4 the contraction force in the central portion of the whole or part of the width direction of the elastic yarn for each body fit is additionally provided so as to be lower Disposable pants. 7. The disposable pants according to claim 5, wherein the part is a part overlapping with the absorber. 8. The spacing of the elastic yarn for each body fit equidistantly or non-equidistantly, contractile force disposable pants according to any one of claims 1 to 7 which is equal or unequal.