KR100258021B1 - Disposable absorbent inserted flexible elastomer - Google Patents

Abstract

PURPOSE: Disposable absorbing articles containing flexible elastic member is provided to prevent aggregation of absorber, enhance stability of absorber, improve convenience, and have protective effect to the skin. CONSTITUTION: Disposable articles consists of a liquid-permeable surface sheet, a liquid-impermeable back sheet, and an absorbing core between the surface sheet and the back sheet. The core comprises flexible elastic member having cross section of 0.2-20mm¬2 and flexibility of 20gf-3.5kgf. The elastic member is connected to the top end and the leg part of articles, and again connected to the bottom end. Alternatively, the elastic members are crossed each other, they confer the elasticity on the leg part. The articles improve convenience, and have protective effect to the skin.

Description

Disposable absorbent product with flexural elastic member

1 is a plan view illustrating one embodiment of a disposable absorbent article according to a first embodiment of the present invention.

2 is a plan view illustrating one embodiment of a disposable absorbent article according to a second embodiment of the present invention.

3 is a plan view illustrating one embodiment of a disposable absorbent article according to a third embodiment of the present invention.

4 to 6 show examples of positions in which the flexible elastic members are applied as a horizontal cross-sectional view showing an embodiment of the disposable absorbent article according to the present invention.

* Explanation of symbols for main parts of the drawings

1: waist elastic body 2: side nonwoven fabric

3: absorbent pad 4: leg elastics

5: blocking cuff elastic body 6: flexural elastic member

7: center nonwoven fabric 8: re-adhesive tape

The present invention relates to a disposable absorbent article for inserting a flexible flexible elastic member to maximize the fit and maximize the anti-aggregation function of the absorbent pad.

In general, the disposable absorbent product is a generic name for products that absorb and excrete urine and feces secreted by human physiology and menstrual and vaginal discharge, and refers to diapers, training pants, sanitary napkins and panty liners. It has a comprehensive meaning.

In the present invention, as a disposable absorbent product, a panty-type disposable diaper for infants and incontinence is given as an example.

Existing disposable absorbent products have tried various improvements due to consumer's desire for leakage prevention function. Among them, the contractile elastic body is designed to fit the absorber to the body, and the force acts only by the contraction of the absorber. For example, Utility Model Publication No. 94-22015 (19.10.19) discloses a diaper in which a plurality of rubber elastic yarns are extended and contracted around a leg and a torso to fit a body. Publication No. 91-16208 (October 26. 98) discloses a wear article for disposable pants that allows three shrink elastic members to bend and intersect to press the cuff member toward the wearer's side.

It is also true that disposable absorbent products based on such shrinkage have adverse effects such as incorporation of absorbent pads and discomfort between legs, despite their effectiveness in preventing leakage.

In addition, to improve the anti-aggregation function of the absorbent pad, an attempt has been made to use an anti-aggregation layer between the absorbent pads or a synthetic fiber to increase the strength of the absorbent pad, but the stiffness of the absorbent pad is increased. There is a limit to increasing the strength of the absorbent pad, and the absorber is worn between the user's legs, so that the user's leg creates a constant compressive force as the user's legs move. It is not without it.

In particular, the disposable absorbent product using only the existing contractile elastomer absorbs secretion fluid, and then the wet strength of the absorbent pad drops rapidly, and furthermore, it maximizes contact with the surface of the product moistened with the moisture and decreases the fit and causes skin problems. Have characteristics.

Unlike the conventional disposable absorbent products, the present invention has been achieved in order to prevent agglomeration of the absorbent pad, maximization of wearing comfort, and reduction of skin irritation by complementarily applying a contracting elastic body and an expanding bending elastic member. .

More specifically, the present invention is to maintain the elasticity to the outside by inserting the flexible elastic member of the appropriate flexural modulus (Flexural Modulus) appropriately combining the curved and straight-shaped flexural elastic members located in the longitudinal and transverse directions of the product It is.

That is, in the manufacture of the disposable absorbent article, the bending elastic member exhibiting resilience elasticity is positioned between the user's legs to generate a reaction against the pressure which the transverse axis and the front and rear sides of the absorbent article face in opposite directions. The present invention relates to a flexible elastic member having an appropriate bending strength and its application.

In general, the bending elastic retaining means is composed of two parts of bending elastic members which are diagonally connected to the outer upper part and the leg part of the diaper and connected to the lower part, that is, the bending elastic member is one per part. Dogs or more are staggered and intersect at two points.

FIG. 1 shows an example of application of such a flexible member in a conventional disposable absorbent article comprising an absorbent layer between a liquid permeable surface sheet and a liquid impermeable backsheet, and the crossover of the flexible elastic member generates repulsive force between the mutual axes, thereby absorbing it. This will prevent the pads from sticking together.

2 shows the application of a flexible elastic member having a flexible elastic force between the absorbent layer and the liquid impervious backsheet such that elasticity is formed in the leg portion by crossing the outer middle portion of the diaper with each other.

3 shows applying a flexural elastic member having a flexural elastic force between the absorbent layer and the liquid impermeable backsheet such that elasticity is formed in the leg portion across both sides of the outer middle portion of the diaper along the horizontal axis.

The flexural elastic members may be applied in more various forms, and these may be applied alone or in combination of two or more at each site to generate an appropriate flexural strength or a better form.

In addition, the application portion of the flexible elastic member is directly absorbed between the absorbent layer and the liquid impermeable surface sheet as shown in FIG. 4, or applied after being attached to the lower end of the absorbent layer or the inside of the liquid impermeable surface sheet. It can be applied by inserting into the pad or the liquid impermeable surface sheet can be applied between the waterproof film and the nonwoven when used with the waterproof film and the nonwoven fabric.

The application portion of the flexural elastic member may be used in various parts in one product in the first and second and third degrees.

Of course, the application site of such a flexible elastic member may be selected in various complex if the general disposable absorbent product according to the development of the application technology.

The applicable flexural elastic member may be a copolymer such as polyethylene, polypropylene, polyester, polyacryl, polyamide, polyurethane, or the like. In addition to the above, various materials exhibiting appropriate bending strengths such as metals and rubbers may be used.

The flexural strength of the flexural elastic member may be appropriately selected depending on the application mode and the bonding method, and in the case of FIG. 1, the flexural strength is selected in the range of 10 kgf to 3.5 gf when measuring three-point bending.

If the flexural strength of the flexural elastic member is less than the above range, it is difficult to expect the effect of preventing the agglomeration of the absorbent pad. If the flexural strength of the flexural member is greater than that, excessive pressure may be required for the user, and a problem may occur in maintaining the shape of the product.

In fact, in the case of nonwoven fabrics used in general disposable absorbent products, the tensile strength is about 1kgf to 3kgf, and in the case of waterproof film, the flexural strength of the above-mentioned area is required to support the flexural strength of the flexural elastic member that the tensile strength is about 0.5kgf to 20kgf. The use of materials to maintain modulus is appropriate.

The cross-sectional shape of the flexible elastic member may be circular, elliptical, and polygonal, inner and inner tubular, and plate-shaped, and may be appropriately selected depending on the type of disposable absorbent product to be applied, application mode, and adhesive method. .

In addition, the cross-sectional size of the flexible elastic member can be used from 0.1 mm 2 to 20 mm 2 in the case of a circular, the size of 0.2 mm 2 to 30 mm 2 in the case of a polygon, and thus the cross-sectional size of the flexible elastic member in the present invention Can be selected from 0.2-20 mm2.

Shrinkable elastomers used in general disposable absorbent products have been applied in various sizes ranging from 0.1 mm2 to 80 mm2, and the flexural resilient elastic members used in the present invention could be applied regardless of their size.

The flexural elastic members could be applied to various types of disposable absorbent articles in various aspects, and are shown in Examples 1, 2, and 3.

Of course, the examples illustrate only some of the various possible embodiments, and furthermore, it is to be emphasized that the present invention is not intended to be limited only to these embodiments.

The disposable diaper applying the present invention is composed of a liquid permeable surface sheet, a liquid impermeable backing sheet and an absorbent layer therebetween, and the absorbent layer is one of general disposable absorbent articles composed of fluff pulp and / or paper tissue and an absorbent polymer. I can express it.

Various experimental results show that the application of the above-mentioned flexural elastic member shows excellent improvement in agglomeration prevention, usability and wearing comfort, and does not significantly affect the quality of leakage prevention, absorption, water retention, absorption speed, etc. The findings have been found through research to achieve the present invention.

By applying the elastic member as described above, it is possible to manufacture a disposable absorbent article that can help prevent agglomeration which may appear in the disposable absorbent article and contribute to better fit and usability.

EXAMPLE

The present invention to which the flexural elastic member is applied will be described in detail through Examples and Comparative Examples.

However, in the present invention, only these examples have been evaluated for the anti-aggregation function, usability and convenience of 60 diapers.

That is, the diapers of Examples 1, 2, and 3 were used in each of 20 consumers, along with the diapers of Comparative Examples, and the opinions thereof were questioned.

At this time, a result in which the product to which the flexural elastic member was applied was greatly satisfied as compared with the general diaper was obtained.

Example 1

A liquid permeable surface sheet, a liquid impermeable backsheet, and an absorbent layer between the surface sheet and the backsheet, wherein the absorbent layer is between the absorbent layer and the liquid impermeable backsheet in disposable diapers consisting of absorbent polymer and fluff pulp and / or paper tissue. An elastic member having a bending elastic force in the product is applied so as to be connected to the diagonal direction formed in the outer upper portion and the leg portion of the diaper as shown in FIG.

Example 2

A product having the same structure as in Example 1, wherein the flexible elastic member is applied between the absorbent layer and the liquid impervious backsheet such that elasticity is formed in the leg portion by crossing the outer middle portion of the diaper as shown in FIG.

Example 3

An elastic member having a bending elastic force between the absorbent layer and the liquid impermeable backsheet was applied to the leg portion across the outer middle portion of the diaper in the transverse axis as shown in FIG. product.

Comparative Example

A product having the same structure as in Example 1, wherein the elastic member is not applied.

The results for the examples are shown in Table 1 below.

[Judgment of result]

5-point scale: prevention of aggregation, usability, convenience

TABLE 1

The above embodiment is not limited to a single, and there are numerous examples that can be implemented through each combination.

Even if such embodiments are not listed individually, the excellence of such a product can be achieved through the basic use alone. Skin safety and protective effects can be achieved by preventing the aggregation of absorbents, stabilizing the absorbents, enhancing the fit and convenience of the product, and improving the usability and friction between the product surface and the skin. Fully proved by

Satisfaction of the users of the prototype through the embodiment of the present invention was very high compared to the existing product, through which it is clear that the product will be further developed.

Claims (4)

A liquid permeable surface sheet, a liquid impermeable backsheet, and an absorbent layer between the surface sheet and the backsheet, wherein the absorbent layer is the cross-sectional size of a conventional disposable absorbent article consisting of an absorbent polymer and fluff pulp and / or paper tissue. Of elastic members having a flexural elasticity of 0.2-20mm2 and a bending strength of 10 gf-3.5kgf are connected in a diagonal direction formed on the outer upper part and the leg of the product and then connected to the lower part of the product to make the outer part of the product Absorbent product with a flexible elastic member, characterized in that to maintain the elasticity in the direction. In a conventional disposable absorbent article consisting of an absorbent layer between a liquid permeable surface sheet and a liquid impermeable backsheet, an elastic member having a bending elastic force having a cross section of 0.2-20 mm 2 and a bending strength of 10 gf-3.5 kgf is formed on the outside of the diaper. Disposable absorbent product with a flexible elastic member inserted, characterized in that to apply the elastic portion is formed to cross the intermediate portion to each other to maintain the elasticity in the outward direction of the product. In a conventional disposable absorbent article consisting of an absorbent layer between a liquid permeable surface sheet and a liquid impermeable backsheet, an elastic member having a bending elastic force having a cross section of 0.2-20 mm 2 and a bending strength of 10 gf-3.5 kgf is formed on the outside of the diaper. Disposable absorbent product with a flexible elastic member inserted, characterized in that the elastic portion is formed so as to be formed to the outside across the middle portion in the transverse axis. According to any one of claims 1 to 3, the type of bending elastic member is polyethylene (Polyenthylene), Polypropylene (Polypropylene), Polyester (Polyester), Polyacryl (Polyacryl), Polyurethane (Polyurethane), Poly Disposable absorbent product with a flexible elastic member, which is characterized by applying various materials such as amide (Polyamide), copolymer (copolymer), metal, rubber, etc. alone or in combination.