JPH048362A - Disposable training pants - Google Patents

Abstract

PURPOSE:To give an uncomfortable feeling to a baby by a wetness sensed region so as to inform the other person of excretion while pants are used by interposing a liquid absorptive core unit between a liquid permeable internal surface sheet and non-liquid permeable external surface sheet. CONSTITUTION:Pants are constituted of a liquid permeable internal surface sheet 4, non-liquid permeable external surface sheet 5 and a sheet or mat-shaped liquid absorptive core unit 6 interposed between these sheets 4, 5. At least partly an area of the core unit 6 is infiltrated easily with excreted liquid, and as a result, a wetness sensed area 12 is provided so as to sufficiently give a wet feeling to a baby. That is, density in a core unit part of the wetness sensed area 12 is set lower than that in the other area 13. When the basy is seated, an about 35g/cm<2> load is generally applied to the pants. Accordingly, in the wetness sensed area 12, excreted liquid absorbed thereto is preferable to ooze out at a load of 35g/cm<2> or less.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) This invention relates to disposable training pants. More specifically, it is made to be worn by infants in order to quickly change the habit of wearing diapers to a life without diapers.

Regarding so-called training pants.

(Prior art 1 Invention or problem to be solved) Generally,
Conventional training pants are made of cloth and can be washed and used repeatedly.

However, not only do they need to be washed, but when infants defecate while wearing pants, excrement fluid leaks from the pants and stains indoor surfaces such as tatami mats and carpets.

This invention fully fulfills the original function of training pants, which is to make the infant feel uncomfortable when the infant defecates while wearing the pants, because the pants get wet with excrement, and is different from conventional cloth pants. The challenge is how to construct pants that do not leak excretory fluid.

(Means for Solving the Problems) Pants according to the present invention have a stretchable torso opening and a pair of stretchable leg openings, and are arranged between a liquid-permeable inner sheet and a liquid-impermeable outer sheet. It is assumed that the liquid-absorbent core is interposed between the core and the liquid-absorbing core.

The present invention solves the above problem by providing a moisture sensing region in at least a portion of the core in the configuration based on the above premise.

In a preferred embodiment, the core portion of the moisture sensing region comprises:
The exudate exudation property under a load of 35 g/cm2 or less is made higher than that of the core portion in other areas.

In a preferred embodiment, the inner sheet provides a moisture sensing region by imparting hydrophilicity to a region that at least partially overlaps with the moisture sensing region. The hydrophilicity of the moisture sensing region of the inner sheet can be imparted by treating the sheet portion in that region with a lignifying agent, or by forming at least the surface of the sheet portion in that region with a hydrophilic material. do.

(Operations and Effects) According to the pants of the present invention, when an infant defecates without wearing the pants, the moisture-sensing area in the core gets wet, and the inner sheet is also re-moistened thereby, causing the infant's skin to become wet. Contact. Therefore, this wetness-sensing area causes discomfort to the infant, and the infant senses that he or she has excreted, and develops the habit of notifying others of the excrement while using the pants.

On the other hand, since the pants according to the present invention are training pants, the liquid-impermeable outer sheet prevents excrement from leaking, so there is no possibility of excrement leaking and staining the floor etc. It's fleeting.

In particular, in the pants according to the present invention, since the liquid-impermeable outer sheet prevents excrement from leaking from the pants, the moisturizing effect of the moisture sensing area increases accordingly, and the pants perform excellent functions as training pants, making them suitable. It is. These features can never be obtained from traditional cloth training pants.

If the inner sheet is also provided with a moisture sensing area, the above effect can be made even more pronounced.

(Example) An example of the pants according to the present invention will be described below with reference to the drawings.

1 and 2, the pants 1 have an elastic torso opening 2 and a pair of elastic leg openings 3. In FIGS. Pants L includes a liquid-permeable inner sheet 4 and a liquid-impermeable outer sheet 5.
and a sheet or mat-like liquid absorbent core 6 interposed between them.

Between the parts 7.8 of the inner and outer sheets 4, 5, which form the trunk opening 2 and the leg opening 3, respectively, an elastic member 9.10 is attached under extension via an adhesive. By folding the pants vertically so that the inner sheet 4 is located on the inner surface at the center of the pants l in the unfolded state shown in FIG. 2, and joining the opposing sides 11 excluding the leg openings 3, The pants 1 shown in FIG. 1 are constructed.

The core body 6 is formed into a so-called cotton-like shape obtained by defibrating a valve seat, or a sheet-like or mat-like shape from a pulverized valve. The core 6 may optionally contain superabsorbent polymer particles of a cap.

What is important about the core body 6 is that at least a partial region of the core body 6 is free from the excreted liquid absorbed in that region, and
As a result, the wetness sensing area described later is provided to give a feeling of wetness upward to the infant.

3 to 5, a given portion of the core 6 defines a moisture sensing area 12, which is surrounded by a chain line. The wetness sensing region 12 can be formed in this way. That is, the density of the core portion of the moisture sensing region 12 is made lower than that of the other region 13. In addition, when forming the core body 6 by mixing superabsorbent polymer particles in a cotton-like bulb, the region 1
The amount of superabsorbent polymer particles in region 2 is made smaller than that in other region 13. This is because the lower the density of the core body 6 and the lower the amount of superabsorbent polymer particles, the lower the ability to absorb and retain excrement fluid. By the way, in order to lower the density only in the part where the core body 6 is made,
For example, it is preferable to make the amount or thickness of the material in the area where the density is not lowered larger than that in the area where the density is to be lowered, and to compress the core body 6 to have a substantially uniform thickness over the entire area.

For infants or toddlers, pants generally have about 3
A load of 5g/c■2 is applied. Therefore, the wetness sensing area 12 is preferably such that exudate absorbed therein can leach out therefrom under a load of 35 g/cm2 or less.

The inner sheet 4 is made of a thermoplastic crimped am material and is made of a non-woven fabric that is vertically and horizontally stretchable and liquid-permeable and has been given a sheet-like shape using a fluid patterning method. If a given portion of the inner sheet 4 that overlaps the moisture sensing area 12 is treated with a known lignifying agent (such as a surfactant), the wettability with excrement fluid can be further improved. In this way, to define a moisture sensing area (not shown) also in the inner sheet 4, the hydrophilic ta+t
For example, rayon fibers, non-woven fabrics made of naturally hydrophobic synthetic fibers made hydrophilic (for example, wood-loving polyester fibers!!), or hydrophilic paper (Japanese paper), etc., can be made into a given size. The cut pieces may be integrally joined to the upper surface of a given part. Alternatively, the entire inner sheet 4 may be used as a wetness sensing area, in which case a nonwoven fabric formed from only the hydrophilic fibers or, if necessary, a mixture of the above-mentioned hydrophilic fibers and hydrophobic fibers, is used. You may.

The outer sheet 5 is constructed by integrally bonding a vertically and horizontally stretchable and liquid-permeable nonwoven fabric made of the same material as the inner sheet 4 and a vertically and horizontally stretchable film made of synthetic resin or rubber. Instead, a nonwoven fabric that is stretchable both in the vertical and horizontal directions and is impermeable to liquid or resistant to liquid permeation may be used.

[Brief explanation of the drawing]

FIG. 1 is a perspective view of training pants according to an embodiment of the invention. FIG. 2 is a partially cutaway exploded plan view of the pants shown in FIG. FIGS. 3 to 5 are plan views of each core showing the moisture sensing area. 1: Pants 2. Lower torso area 3: Leg openings 4. Inner sheet 5: Outer sheet 6/Core 12: Moisture sensing area Fig. 3 Fig. 4 Fig. 5

Claims (6)

[Claims] (1) Pants having a stretchable torso opening and a pair of stretchable leg openings are constructed by interposing a liquid-absorbent core between a liquid-permeable inner sheet and a liquid-impermeable outer sheet. Certain disposable training pants, characterized in that a moisture sensing region is provided in at least a portion of the core. (2) The pants according to claim 1, wherein the core portion in the moisture sensing region has a higher exudate permeability under load than the core portion in other regions. (3) The pants according to claim 1, wherein the load is 35 g/cm^2 or less. (4) The pants according to claim 1, wherein the inner sheet is provided with a moisture sensing area by imparting hydrophilicity to an area that at least partially overlaps with the moisture sensing area. (5) The pants according to claim 4, wherein the moisture sensing region of the inner sheet is rendered hydrophilic by treating the sheet portion in that region with a hydrophilic agent. (6) The pants according to claim 4, wherein the moisture sensing region of the inner sheet is rendered hydrophilic by forming at least the surface of the sheet portion in that region with a hydrophilic material.