JP2591621Y2 - Disposable diapers - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION This invention relates to disposable diapers.

[0002]

2. Description of the Related Art Conventionally, the width of a crotch portion of a disposable diaper is made wider than the crotch width of a wearer. Since excretion of bodily fluids is concentrated in the crotch region, it is preferable to increase the area of the crotch region as much as possible without impairing the feeling of wearing, and to increase the amount and speed of absorption of bodily fluids. On the other hand, the liquid-absorbing core is also made as thick as possible at the inseam portion so that the liquid-absorbing amount is increased.
The liquid-absorbent core is composed of ground pulp or a mixture of ground pulp and a superabsorbent polymer, and is generally semi-rigid, depending on its thickness.

[0003]

[Problems to be solved by the invention] Such diapers
When worn, many large wrinkles are formed in the crotch region, and when the wrinkles come into contact with each other, absorption of bodily fluid through the topsheet is reduced in the contact region. Therefore, although the diaper has a large area in the crotch region, there is a problem that rapid absorption of body fluid corresponding to the area cannot be obtained.

[0004] In this invention, by providing a groove extending in the longitudinal direction of the front and rear body on the surface of the liquid-absorbent core facing the topsheet, and by providing an elastic elastic member between the core and the topsheet. It is an object of the present invention to solve the above-mentioned problem by allowing the inseam portion to protrude outward from the body of the wearer .

[0005]

The gist of the present invention to solve the above problems is as follows.

[0006] This invention relates to an improvement in a disposable diaper absorbent core is interposed between the liquid-permeable topsheet and liquid-impermeable back sheet.

[0007] The feature of this invention is that
In One, the facing surfaces of the topsheet of said core,
The diaper has a width of 3 to 20 mm and a depth of 3 to 20 extending in the longitudinal direction of the diaper at least in the width direction central portion of the crotch portion.
One groove having a length of 15 mm and a length of 30 to 200 mm;
Between the groove and each outer edge in the width direction of the diaper, and
Between the topsheet and the core in the vicinity of the groove,
Having an elastic member extending in the longitudinal direction of the diaper
Characterized by

[0008]

In the diaper constructed as described above, when the width of the crotch portion is wider than the crotch width of the wearer, the crotch portion is elastic.
The groove is bent by the shrinkage of the material to guide the wearer.
It curves convexly outward from the body.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The details of the disposable diaper according to the present invention will be described below with reference to the attached drawings.

1 and 2 are a plan view of a diaper 1 according to the present invention and a sectional view taken along line AA. The diaper 1 includes a liquid-permeable top sheet 2, a liquid-impermeable back sheet 3, and a liquid-absorbent core 4 interposed between the two sheets 2, 3. 11 and the edge 12 of the back body 8 have thread rubbers 13, 14, 1 extending along them.
5 is attached and has elasticity. Tape fasteners 16 are attached to both side edges of the back body 8.

[0011] upper surface 21 facing the topsheet 2 of the liquid-absorbent core 4 back and forth in the width direction central portion of the crotch region 9 body 7,
8, a groove 20 extending in the longitudinal direction is provided, and a thread rubber 22 parallel to the groove 20 is attached to the left and right of the groove 20 under extension.

FIG. 3 is a perspective view of the diaper 1 in a worn state. In this state, the crotch portion 9 draws out a smooth curve in the width direction using the groove 20 as an inner bending guide line, and the crotch portion 9 also extends in the longitudinal direction of the front and rear bodies 7 and 8.
The crotch region 9 does not have wrinkles that touch each other to substantially reduce the body fluid absorption area of this region.

FIG. 4 is a plan view of the diaper 1 showing another example of the mode in which the thread rubber 22 is attached. In this example, the thread rubber 22 under extension is arranged in a horizontal V-shape on the left and right of the groove 20,
Since the thread rubber 22 is shrunk on the back surface of the topsheet 2 intermittently, the crotch portion 9 can protrude in both the horizontal width direction and the vertical direction.

In the diaper 1, the groove 20 has a width of 3 to 20.
mm, a depth of 3 to 15 mm, and a length of 30 to 200 mm. Absorbent body 4 having such a groove 20
Can be obtained, for example, by shaping a raw material composed of ground pulp or a mixture of ground pulp and a superabsorbent polymer. In some cases, such shaping may be performed under conditions such as humidifying and pressurizing and heating and pressurizing depending on the properties of the material.
The thread rubber 22 has an extension stress, an extension rate,
Determine the number of pieces used. The thread rubber 22 is preferably stuck to the core 4, but can also be stuck to the topsheet 2, or both. Further, it is preferable that the core 4 and the topsheet 2 are intermittently joined to each other so that they are integrally protruded.

A nonwoven fabric or a perforated plastic film can be used for the top sheet 2, and a plastic film can be used for the back sheet 3.

[0016]

[Effect of the invention] In this diaper, the inseam is the body of the wearer.
Because it curves outwardly away from the waist, it is difficult for large creases to enter the crotch area, and it is possible to realize rapid absorption of body fluids by utilizing the surface area of the crotch area, and to excrete stool
Can be retained at the curved portion to prevent its flow diffusion in the width direction of the diaper .

[Brief description of the drawings]

FIG. 1 is a plan view of a diaper according to the present invention.

FIG. 2 is a partial sectional view taken along line AA of FIG.

FIG. 3 is a perspective view of the diaper in a worn state.

FIG. 4 is a plan view of a diaper illustrating another embodiment.

[Explanation of symbols]

 Reference Signs List 1 diaper 2 top sheet 3 back sheet 4 liquid-absorbent core 20 groove 22 elastic elastic member

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. ⁶ , DB name) A61F 13/15 A61F 13/42-13/64

Claims (1)

(57) [Scope of request for utility model registration] A disposable diaper absorbent core is interposed between the 1. A liquid-permeable topsheet and liquid-impermeable back sheet, the facing surfaces of the topsheet of the core, the diaper
Extending in the longitudinal direction of the diaper in the width direction central portion of at least the crotch region, a width 3 to 20 mm, depth 3 to 15 mm, and one groove length 30 to 200 mm, contact the said groove
Between each outer edge of the diaper in the width direction and near the groove.
The diaper between the topsheet and the core
An elastic member extending in a vertical direction .