JPH0593427U - Diaper - Google Patents

Abstract

(57) [Summary] [Purpose] To prevent the waistline around the front and back of the diaper or one of them from lowering during wearing. [Structure] Adhesive tape 9 on both side ears 6a of the rear waistline 6
Are extended to the outside and attached, and the engaging protrusion groups 12 are provided on the outer surfaces of both sides of the front waistline 5, and the engaging protrusion groups 12 are engaged with each other. A second elastic material 13 that causes wrinkles to be formed on both side ears 6a.
A diaper provided with the engaging portion 14.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to an open diaper, particularly a disposable diaper, which fastens front and back waists together.

[0002]

[Prior Art]

 In Japanese Utility Model Laid-Open No. 57-185705 (hereinafter referred to as “first technology”), in order to fasten both sides of the front and rear waists to each other, adhesive tapes (fixed on both sides) extending outward from both sides of the rear waist are fixed. In addition to the tape), there is disclosed a diaper tape fastener in which an inner surface of each side portion is provided with an adhesive surface to be joined to an outer surface of each side portion around the front waist.

In Japanese Patent Laid-Open No. 63-21903 (hereinafter, referred to as a second technique), in order to fasten both side portions around the front and rear waists to each other, adhesives that extend outward from both side portions around the rear waist. In addition to the tape (outer fastening means), a diaper is disclosed in which the outer surface of both sides of the front waistline is provided with adhesive surfaces (inner fastening means) that are respectively joined to the inner surfaces of both sides of the rear waistline. ..

In the first and second techniques, adhesive tapes (hereinafter, referred to as first fastening means) extending outward from both sides of the rear waistline are joined to outer surfaces of both sides of the front waistline. In order to prevent the anteroposterior waistline or one of them from slipping down from the body, the outer surface of both sides of the front waistline and the inner surface of both sides of the rear waistline are also joined. (Hereinafter, referred to as second fastening means).

[0005]

[Problems to be solved by the device]

 According to a second technique, it teaches that the second fastening means may consist of a layer of material which is entangled in the fibers of the diaper topsheet. A layer of this material is considered to be something like the well-known Velcro (trademark) or Velcro (trademark), which is used as a fastening means around the front and back waist of a disposable diaper. Since it is already known to use those Velcro or Velcro tapes, it is not a new idea.

Generally, a top sheet having a small basis weight and a low density is used in order to obtain economy, liquid permeability, air permeability, flexibility, etc. Therefore, a top sheet is used as an area surface to which Velcro or Velcro is attached. If the seat is used as it is, it cannot be sufficiently engaged, and the engagement may be released during wearing of the diaper.

This invention is made of a material such as Velcro or Velcro as one of the second fastening means, and a fibrous material such as a top sheet as the other side of the second fastening means to be engaged with the mating surface. However, even if the fibrous material is used, it is an object to construct the mating surface so that it can be sufficiently engaged with a material such as Velcro or magic tape.

[0008]

[Means for Solving the Problems]

 This invention is directed to the first fastening means extending outward from both ear portions around the rear waist, the inner surface of the both ear portions inside the first fastening means, and the outer surfaces of both side portions around the front waist. Assuming that the diaper is provided with a second fastening means on at least one side, it is characterized by the following points.

That is, the second fastening means includes a first engaging portion formed with a group of engaging projections on outer surfaces of both sides around the front waist, and the rear waist inside the first fastening means. At least the inner surface of the both side ear portions is expanded and contracted in the lateral direction to form a wrinkle, and the second engagement portion is engaged with the first engagement portion.

[0010]

[Action]

 When the diaper is worn, first, the second fastening means and then the first fastening means are used to fasten both front and rear waist portions to each other. By fastening in this manner, the front and back waistlines are fixed around the waist of the wearer by the first and second fastening means, and therefore the front and back waistlines or one of them does not lower during wearing. In particular, since the engagement projection group that constitutes the first engagement portion of the second fastening means engages with the wrinkle generation surface that constitutes the second engagement portion of the second fastening means, the engagement is reliable. The front and rear waistlines are relatively strongly supported by the engagement, and proper wearing of the diaper is maintained even if the relative strength of the front and rear waistlines by the first fastening means is weak.

[0011]

【Example】

 An embodiment of a diaper according to the present invention will be described below with reference to the drawings.

In FIGS. 1 and 2, a diaper main body 1 is a liquid-permeable inner surface sheet 2 made of a non-woven fabric, a liquid-impervious outer surface sheet 3 made of a plastic film or a laminate sheet of this and a non-woven fabric, and a crushed product. The inner and outer surfaces of the pulp are made by blending super absorbent polymer particles, and the liquid absorbing panel 4 is interposed between the sheets 2 and 3, and the ear portions 5a projecting to both sides of the front and rear waist regions 5 and 6, 6a is formed. An elastic member 7 that expands and contracts in the lateral direction between the inner and outer sheets 2, 3 of the rear waistline 6 of the diaper main body 1, and a leg between the inner and outer sheets 2, 3 of the leg of the diaper main body 1. Elastic members 8 that expand and contract in the respective directions are interposed under the extension in the length direction.

The first fastening means is configured by attaching the adhesive tape 9 to the both side ears 6 a of the rear waistline 6 so as to extend outward. A band-shaped sheet 10 made of a plastic sheet is attached to the outer surface of the front waistline 5 for detachably joining the adhesive surface 9a of the adhesive tape 9. The strip-shaped sheet 10 is provided to reinforce the outer sheet 3 in the region where the adhesive surface 9a is attached and detached, and to indicate the position to join the adhesive surface 9a according to the waist size of the wearer.

A first engaging portion 11 is provided on the outer surface of the front waistline 5 in the vicinity of both side ears 5 a adjacent to the lengthwise end of the belt-shaped sheet 10. The first engaging portion 11 is the same as or similar to a known Velcro (trademark) or Velcro (trademark), and has an engaging projection group 12 having a hook portion formed at the tip. An elastic material 13 that expands and contracts in the lateral direction between the inner and outer surface sheets 2 and 3 at the inner side of the adhesive tape 9 on the both side ear portions 6a of the rear waistline 6 is stretched in the lateral direction. There is provided a second engaging portion 14 which is interposed (see FIG. 2) and contracts that portion to generate multiple vertical wrinkles. By providing the first and second engaging portions 11 and 14 in this manner, the second fastening means is configured. A flexible material such as polyurethane foam is used as the elastic material 13, and is fixed to at least the inner surface of the inner surface sheet 2 with an adhesive. The inner surface of the second engaging portion 14 may be only the relevant portion of the inner surface sheet 2, but other fibrous material (including porous or reticulated material) may be attached to reinforce the portion. Good.

During and during wearing of the diaper, the rear waistline 6 receives tension in the waistline direction due to the operator's pulling and contraction of the elastic member 7. At this time, if the elastic material 13 is prevented from contracting, there is a possibility that sufficient vertical wrinkles do not occur on the inner surface of the second engaging portion 14. Therefore, it is preferable that the contraction stress of the elastic material 13 is made stronger than that of the elastic member 7.

The adhesive tape 9 uses a known material such as a kraft paper or a high-quality paper or a laminated sheet of a non-woven fabric and a plastic film as a base material, and a pressure-sensitive adhesive such as a known hot adhesive is used for the base material. A melt type adhesive is applied to form the adhesive surface 9a. It goes without saying that a known release tape (not shown) is temporarily attached to the adhesive surface 9a to protect it.

When wearing a diaper, first, the second engagement portion 14 is pressed against the first engagement portion 11 to engage the engagement projection group 12 with the fibers on the wrinkle-generating surface of the second engagement portion 14. Then, the adhesive surface 9a of the adhesive tape 9 is joined and fixed to the belt-shaped sheet 10 to fasten both side portions of the front and rear waist regions 5 and 6.

[0018]

According to the diaper of the present invention having the above-described structure and operation, the front and rear waistlines of the diaper are relatively supported by the first and second fastening means. Since one side of the diaper is lowered, the leg circumference of the diaper does not come into close contact with the wearer's leg circumference, and the leakage of excrement can be prevented.

In particular, in the second fastening means, the first engaging portion is formed of the engaging projection group, while the second engaging portion is formed of the wrinkle generating surface. Securely engages. For this reason, the support is maintained more reliably, and even if the wearer moves the body to some extent, the front and rear hips or one of them does not fall, and the leakage is more effective. To be prevented.

[Brief description of drawings]

FIG. 1 is a perspective view of a diaper with a part thereof broken away and one side portion of a rear waist region shown open.

FIG. 2 is an enlarged sectional view taken along line XX of FIG.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Main diaper 2 Inner surface sheet 3 Outer surface sheet 4 Panel 5 Front waistline 6 Rear waistline 5a, 6a Ear part 9 Adhesive tape 9a Adhesive surface 11 First engagement part 12 Engagement protrusion group 13 Elastic material 14 Second engagement Department

Claims (5)

[Scope of utility model registration request] 1. A first fastening means extending outwardly from both side ears around the rear waist, inner surfaces of the both ears inside the first fastening means and outer surfaces of both sides around the front waist. A diaper having a second fastening means provided on at least one side thereof, wherein the second fastening means includes a first engagement portion in which an engagement projection group is formed on outer surfaces of both side portions around the front waist and the first engagement portion. At least the inner surfaces of the both ear portions around the rear waist, which are inside the fastening means, are configured by a second engaging portion that causes wrinkles by lateral expansion and contraction to engage with the first engaging portion. The said diaper characterized by being. 2. The second engaging portion is composed of at least a fibrous material forming an inner surface and a laterally stretchable elastic material positioned on the outer surface of the fibrous material. Diaper described in. 3. A fibrous liquid-permeable inner surface sheet, a liquid-impermeable outer surface sheet, and a liquid-absorbent panel interposed between these sheets have the ears on both sides around the rear waistline. A diaper is formed, and an elastic material that contracts at least the inner sheet portion in the lateral direction to generate wrinkles is interposed between the inner and outer sheet portions in a given region of the both ears around the back waist. Accordingly, the diaper according to claim 1, wherein the second engaging portion is configured. 4. The group of locking projections is formed by projecting the group of fibrous projections from an upper surface of a synthetic fibrous base and forming locking parts at their ends, and the lower surface of the base is formed on both sides of the front waistline. The diaper according to claim 1, wherein the diaper is provided by being joined to the outer surface of the region. 5. The diaper according to claim 1, wherein the second fastening means is composed of an adhesive tape having an inner surface coated with an adhesive.