JPH057221U - Disposable wearing articles - Google Patents

Abstract

(57) [Summary] [Structure] A diaper top sheet is formed with a liquid-permeable area with a large number of openings through which excrement permeates, and cuffs on both sides of this area to prevent lateral leakage of excrement. The liquid-impervious area is formed by a single liquid-impermeable seamless sheet. [Effect] Since the region is composed of one sheet, the diaper has a simple structure and can be manufactured at low cost.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

  The present invention relates to disposable wearing articles such as diapers and training pants.

[0002]

[Prior art]

  A disposable wearing article, such as a disposable diaper, has a surface area in the central area. It has liquid permeability because it allows the excrement to pass through and is absorbed by the absorbent core. In addition, it is necessary to have liquid impermeability to prevent the leakage of excrement from the legs. There are basically the following two forms.

[0003]   In the first embodiment, the surface that comes into contact with the wearer's skin is composed of a liquid-permeable sheet, The cuffs (side flaps) located on both sides are the both sides of the seat and the wearer. And both sides of the liquid-impermeable back sheet that does not come into contact with the skin.

[0004]   In the second embodiment, the surface that comes into contact with the skin of the wearer is composed of a liquid-permeable sheet, The cuffs (side flaps) located on both sides are connected to both sides of the seat and are impermeable. It is composed of a liquid sheet.

[0005]

[Problems to be solved by the device]

  In the first embodiment, the liquid impermeable sheets are placed on the back surfaces of the cuffs on both sides. The liquid permeable sheet is located on the surface of the container, so it is excreted on the surface. The substance diffuses and easily leaks between the surface and the skin of the wearer.

[0006]   In the second embodiment, since the cuffs on both sides are formed, the liquid permeable surface sheet is used. Need to connect another impermeable sheet to it. This is the diaper manufacturing process In addition, since the device is complicated, the manufacturing cost of the diaper increases.

[0007]   This invention eliminates the above-mentioned conventional drawbacks, so that the surface of the article is transparent. The problem is how to configure the liquid region and the cuff region.

[0008]

[Means for Solving the Problems]

  The present invention for solving the above-mentioned problems, as shown in the drawings, includes a topsheet 1, Liquid-impervious backsheet 2, and liquid-absorbent core 3 interposed between front and backsheets 1 and 2. , A liquid-impervious cuff portion extending from the vicinity of both side edges of the core 3 Is assumed.

[0009]   This invention is based on the above premise that the topsheet 1 is made of a hydrophobic material, It has one region 5 and second regions 4 that are seamlessly continuous on both sides of the first region 5. It The first region 5 is located on the upper surface of the core 3, and has a liquid-permeable region having openings 6 arranged therein. Area. The second region 4 does not have an opening and is a liquid impermeable region that forms a cuff. Area.

[0010]   In the preferred embodiment, the second region 4 comprises a first cuff portion 7 and a second cuff portion 8. The elastic member 1 is composed of the first cuff portion 7 and extends and contracts in the longitudinal direction of the free edge thereof. It is formed so as to rise up by a contraction force of zero.

[0011]

【Example】

  An embodiment according to the present invention will be described by taking a disposable diaper as an example with reference to the drawings. Then, it is as follows.

[0012]   FIG. 1 shows a part of one of the left and right sides of the diaper, which part is symmetrical. (See Fig. 2 and Fig. 3). The diaper has a top sheet 1 and a back sheet 2 , A core 3 and a cuff (side flap) portion 4.

[0013]   The topsheet 1 is made of a hydrophobic material and is located on the first area 5 and on both sides of the first area 5. The second region 4 is seamless and continuous and forms a cuff portion. First area 5 Is a liquid-permeable material that is located on the upper surface of the core 3 and has a large number of openings 6 arranged at given intervals. Area. The second region 4 does not have the opening 6 and is a liquid impermeable region.

[0014]   The second region 4 is a first cuff portion that extends upward in an inverted U shape to form a three-dimensional structure. 7 and a second cuff portion 8 extending laterally outward from the lower edge thereof. Second cuff The portion 8 integrally contacts with the portion 9 of the backsheet 2 that extends laterally outward from the side edge of the core 3. It is reinforced by matching. Stretches in the lengthwise direction within the free edge of the first cuff portion 7. The elastic member 10 is interposed. Although not shown, if necessary, the second cuff portion 8 An elastic member that expands and contracts in the length direction is provided in the vicinity of the outer side of the back sheet portion 9 and May be.

[0015]   The opening 6 has a liquid guiding tube 11 protruding from the back surface of the topsheet 1. Open hole The planar shape of the portion 6 is circular, but even if it is an irregular shape such as an ellipse or a cloud, or a prismatic shape. Good. The liquid guiding tube 11 has a tube wall formed so as to gradually become thinner toward the lower end. The tube wall may be formed so that it gradually widens, or the tube wall becomes vertical. It may be formed, and the opening portion 6 effectively removes the excreted liquid from the surface of the topsheet 1. It has a function to effectively prevent the excrement liquid from flowing back to the surface while passing it. As long as it is, the tube itself may not be formed at all. Has such a function In order for the aperture 6 to have a circular shape, its diameter is 0.2-2 mm, The total area ratio is preferably 30 to 60%.

[0016]   The material for the topsheet 1 is spunbond, meltbond, meltblown. Any fibrous nonwoven fabric or plastic film is used. Element of back sheet 2 The material of the core 3 is plastic film, waterproof non-woven fabric, etc. Examples of materials include pulverized pulp mixed with superabsorbent polymer particles. Used individually. The material of the elastic member 10 is natural rubber, synthetic rubber, A ribbon made of plastic such as letter is used.

[0017]   Although not shown, on the back surface of the top sheet 1, excrement absorbed by the core 3 is formed. Is effectively suppressed from flowing back from the openings 6 to the surface of the topsheet 1, A large amount of space is formed between the lower surface of the sheet 1 and the upper surface of the core 3 to form the top sheet 1. (A) A hydrophobic fiber assembly layer that is isolated from the upper surface of 3 may be interposed.

[0018]

[Effect of device]

  According to the wearing article of the present invention having the above configuration, one surface sheet is used. Therefore, the liquid-permeable area in the center and the liquid-impervious areas on both sides, that is, the cuff, are formed. , Especially when the cuff part has a three-dimensional structure, a separate sheet for forming the cuff part Eliminates the need to use and makes the structure of the article extremely simple and reduces its manufacturing cost You can

[Brief description of drawings]

FIG. 1 is a schematic perspective view showing a part of a disposable diaper as an example of a wearing article according to the present invention.

FIG. 2 is a schematic plan view of a developed top sheet of the diaper.

FIG. 3 is a schematic perspective view of the topsheet.

[Explanation of symbols]

1 surface sheet 2 Back sheet 3 core 4 Second area 5 First area 6 openings 7 First cuff 8 Second cuff 10 Elastic member

Claims (2)

[Scope of utility model registration request] 1. A topsheet, a liquid-impervious backsheet, a liquid-absorbent core interposed between the front and backsheets, and a liquid-impervious cuff portion extending from the vicinity of both side edges of the core. In the disposable wearing article consisting of, the surface sheet is made of a hydrophobic material, and has a first region and second regions seamlessly continuous on both sides of the first region, and the first region is A liquid-permeable region that is located on the upper surface of the core and has arrayed apertures, and the second region does not have apertures and forms the cuff portion. The above article. 2. The second region comprises a first cuff portion and a second cuff portion, and the second cuff portion is located in the length direction of its free edge and is contracted by a contracting force of an elastic member. The article according to claim 1, which is formed so as to rise up.