JPS58149302A - Sanitary article - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a rounded sanitary product (disposable diaper, diaper force/ku, the same applies hereinafter) worn on the crotch of the human body, and in particular, a diaper that can be expanded and contracted so as to be brought into close contact with the chest circumference of the wearer in a compressed state. The present invention relates to a sanitary product characterized by the structure of an elastic member.

Conventionally, this type of sanitary products, particularly disposable diapers, which have been used in practical use, are usually made of a flat belt-like material with a thickness of about 0.25 mm and a width of about 6.5 mm. f human resources are used.

Conventional sanitary products using this type of stretchable elastic member compress the wearer's chest circumference strongly locally in a linear manner when worn, resulting in a compression mark on the chest circumference and furthermore, for a relatively long period of time. It has drawbacks such as causing pain to the wearer when worn.

It has been proposed to use human resources to form a relatively wide flat belt as a rounded and stretchable elastic member to eliminate such defects; e, this kind of flat belt-like f
Due to its processing technology, the thickness of the conventional f member is 0.25 mm.
- It is difficult to form a thin layer, and even if it were possible, it would be extremely difficult to obtain a uniform thickness over the entire surface.

Therefore, if the width of the conventional 7-piece material is made wide and used at the same elongation ratio as the pom material, the tensile stress will be too strong and the compressive force on the wearer's chest circumference will be too strong. Therefore, in order to obtain a tensile stress that is generally considered appropriate for chest compression, it is necessary to reduce the elongation magnification in accordance with the width of the f member. This means that as a stretchable elastic member, if the f member is formed wide, the amount of material equal to the nine widths,
In addition, the amount of material increases by both the amount of material required for the extra length (by lowering the elongation magnification), resulting in higher costs. Higher costs are extremely disadvantageous in practice, especially for products that are provided at low cost, such as disposable diapers.

It is an object of the present invention to provide a sanitary product equipped with a stretchable elastic member which does not suffer from the above-mentioned disadvantages.

In order to achieve the above-mentioned object, the gist of the present invention and a sanitary product equipped with a stretchable elastic member include:
The book is characterized by having a belt-like shape, which is made by fusion-bonding a plurality of thread-like materials having a cross-sectional area of 0.02 to 0.5- in parallel and forming a constriction between them. The above-mentioned sanitary products include:

The present invention will be further explained based on the illustrated embodiments as follows.

Fig. 1 is a developed plan view of a disposable diaper showing an example of the present invention; Fig. 2 is an enlarged partial cross-sectional view showing each aspect of the stretchable elastic member; and Figs. 3 to 8 are views of each aspect. FIG. 2 is an enlarged partial cross-sectional view of a disposable diaper showing an example of application of the stretchable elastic member.

The diaper 1 includes a liquid-permeable material such as a non-woven fabric, an F sheet 2, and a liquid-impermeable material such as a plastic film.

The absorbent body 4, such as a pulverized Δrug, is interposed between the two sheets 2 and 3, and the two sheets 2 and 3 extend outward from the outer edge of the absorbent body 4 and join together. It is comprised of a stretchable elastic member 6 attached to the side 7 ratchet f5 so as to be stretchable in the longitudinal direction.

Member 6 Wax: A plurality of filamentous materials 6a each having a resistance area of 0.02 to 0, s- are arranged in parallel and constricted between them to the extent that they can be easily separated by a slight tearing force. It is formed by fusion bonding so that a portion 7 is formed, and has a belt-like shape. Such a member 6 is formed by fusion-bonding a plurality of filamentous f-members 6a by bringing them into contact with a portion that is not sufficiently solidified after molding. The member 6Fi in FIG. 2 (4) is made up of two thread-like f-m materials 6a, and the member 6 in FIG.
However, each member 6 placed on one side f5 has a cross-sectional area of 0.
In the range of 0.02 to 0.5-, 2 to 100 can be used. Also, as illustrated in FIGS. 3 to 8',
A plurality of members 6 in which a plurality of filamentous materials 61 are fused and bonded are placed in contact with each other or at an appropriate distance from each other.
They are arranged in parallel, preferably with an interval of 3° or less. The thus arranged member 6 is fixed to the inner surface of the pack sheet 3 and/or the sheet 2 with an adhesive such as hot melt while being stretched at a desired magnification.

It should be noted that if the cross-sectional area of the filamentous material 6a is less than 0.02, it is actually difficult to manufacture it, and if it is less than 9.0.5, the present invention will not work due to tension and thickness. The desired effect cannot be obtained.

FIG. 9 shows the relationship between a stretchable elastic member according to an embodiment of the present invention and a conventional flat belt-like stretchable elastic member, with tensile stress (, 9) plotted on the vertical axis and elongation magnification (4) plotted on the horizontal axis. Figure 7 shows comparative characteristic curves for the case of tensile strength.

In the graph, 1 shows the characteristic curve of the conventional member, and b shows the characteristic curve of the inventive member. )
, (g)), nine pieces are fused and joined in parallel so that a constriction 7 is formed between them. The diameter of each filamentous material of the present invention member and the overall width of their parallel state are respectively 0.25 mm thick and 6 mm wide of the conventional member.
．． 6, but the cross-sectional area of the member of the present invention is approximately the same as that of the conventional member due to the presence of the constricted portion 7. Further, the conventional member and the member of the present invention are made of the same rubber material.

Here, according to the member of the present invention, in comparison with the conventional member, even if the thickness and width are the same, as can be understood from FIG. 9, the member of the present invention has a lower tensile stress and a higher cutting elongation. Therefore, in order to obtain a tensile stress of 200 to 300 g that produces an appropriate compressive force on the chest circumference of the wearer, the member of the present invention has a large elongation factor (for example, a tensile stress of 2001 g), but the conventional member can be used at approximately 240%) compared to 175-. Therefore, according to the member of the present invention, in order to obtain a predetermined compressive force against the wearer's chest, the length of the member can be made shorter than that of conventional products. It becomes possible to reduce the amount of diaper material used and produce diapers at low cost.In addition, according to the member of the present invention, the apparent width of the upper member 6 is smaller than that of one F5 material 6&. Since it can be made wider, it reduces the feeling of pressure on the chest circumference of the wearer, and does not cause pain to the wearer even when used for a relatively long time. Furthermore, when a plurality of such members 6 are arranged in parallel, each member 6 appears to function as an upper integral acting part, but since each member 6 is separated from each other, their expansion and contraction behavior is performed almost independently. As a result, the side roughness of the diaper due to each member 6, f5
The degree of close contact with the wearer's chest circumference can be improved. Furthermore, since the members 6 are separated from each other, even if the members 6 do not have air permeability, air permeability can be obtained between the members 6.

[Brief explanation of drawings]

FIG. 1 is a partially cutaway developed plan view of a disposable diaper showing an example to which the present invention is applied. FIGS. 2(6) and 2(B) are partial perspective views showing each aspect of the stretchable elastic member. 3 to 8 are partially enlarged sectional views of disposable diapers showing application examples of the stretchable elastic members of each aspect. FIG. 9 is a graph showing a comparison of characteristics between the present stretchable elastic member attached to a conventional disposable diaper and the stretchable elastic portion attached to the sanitary product of the present invention. DESCRIPTION OF SYMBOLS 1... Diaper, 2... Top sheet, 3.../Guts sheet, 4... Absorber, 5... Side flag, 6... Stretchable elastic member, 6... F material material. Figure 1 Figure 2 (A) (B) T' □

Claims (4)

[Claims] (1) In a sanitary product equipped with a stretchable elastic member for compressing the wearer (chest circumference), the stretchable elastic member consists of a plurality of filamentous tombs each having a cross-sectional area of 0.02 to 0.5-. The above-mentioned sanitary product, characterized in that it has a belt-like shape made of materials arranged in parallel and fused together so that a constriction is formed between them. (2) The sanitary product according to claim 1, wherein the number of thread-like rubber members attached to one part of the sanitary product is 2 to 100. (3) Claim 1, in which a plurality of stretchable elastic members are in contact with each other or arranged in parallel at appropriate intervals.
Sanitary products listed in section. (4) Sanitary products include disposable diapers and diaper power t+
The sanitary product according to claim 1, wherein - is the number of ζ.