JPH08215239A - Disposable humor-treating product - Google Patents

Abstract

PURPOSE: To arrange a flap having a property to erect from the top surface of the main body of the product not to deteriorate user's wearing feeling. CONSTITUTION: A vertical flap having a property to erect from the top surface of the body 1 of a disposable humor treating product (e.g. disposable diaper) is bent in a zigzag along a plurality of bending lines 28A, 28B and 28C extending parallel in the longitudinal direction of the body 10 to pile. Elastic stretching members 30A, 30B and 30C are stuck on the flap 20 being stretched along the bending lines 28A, 28B and 28C. The members 30A, 30B and 30C are fixed on the top surface of the body 10 in substance at points LA, LB, LC, La , Lb and Lc in terms of distances from front and rear end rims of the body 10. The points meet a relationship of LA>LB>LC and La >Lb >Lc .

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to disposable body fluid treatment products such as disposable diapers and sanitary napkins.

[0002]

2. Description of the Related Art Conventionally, in these disposable body fluid treatment products, first flaps that extend horizontally on the left and right sides of the disposable body fluid treatment product and second flaps that extend on the upper surface of the product in the front-rear direction and have a rising tendency from the upper surface. A technique of providing a flap to prevent lateral leakage of body fluid is known. As one of such techniques, Japanese Laid-Open Patent Publication No. 5-285174 discloses a hopper-type opposing structure in which the pair of left and right second flaps have a downward slope from the outside toward the center of the diaper when the diaper is viewed in a cross section in the width direction. Techniques for forming sidewalls are disclosed. The excrement flows according to the gradient and reaches the upper surface of the liquid-permeable topsheet. The liquid matter of the excrement permeates the surface sheet and is absorbed by the core, and the solid matter flows into the pocket formed by the flap and the surface sheet.

[0003]

According to the above-mentioned known technique, if it is desired to accommodate a large amount of solid matter, the second flap may be increased in height and the hopper may be deepened. However, when such a diaper is closely attached to the crotch part and worn, there is no room for the length of the second flap to be extended, and there is a problem in that it wrinkles and becomes crumpled, which significantly impairs the feeling of wearing.

Therefore, according to the present invention, the second flaps are folded in a zigzag shape and overlapped, and elastic folding members are attached in an extended state to each of the folding curves near the center of the diaper that is generated by the bending. The object is to solve the above problems.

[0005]

[Means for Solving the Problems] The present invention provides means for solving the above problems as follows.

According to the present invention, the liquid-absorbent core is interposed between the liquid-permeable top sheet and the liquid-impermeable back sheet, and the pair of left and right first and second left and right laterally extending from the respective left and right side edges of the core. 1
It is premised on a disposable body fluid treatment product having a pair of left and right stretchable second flaps which are provided on the upper surfaces of the left and right side edge portions of the article main body having the flaps and have a rising tendency from the upper surface, and which extend in the front-rear direction of the main body.

Under such a premise, the cross-section in the main body width direction forms a zigzag shape between the base end portion where the second flap is fixed to the upper surface by the joining line extending in the front-rear direction and the free edge portion which is parallel to the base end portion. The inner side of the main body and the outer side spaced apart from the main body are alternately bent and overlapped,
Further, the inner folding curves that are arranged in parallel are sequentially shifted toward the outer side so that they do not overlap each other, and the elastic expansion / contraction members are stretched along each of the folding curves. The feature of the present invention is that the elastic stretchable member that is attached to the second flap and is shifted to the outside is fixed to the upper surface of the main body so that both ends of the elastic stretchable member are located closer to the outside and are closer to the edges of the main body. Is.

[0008]

In the disposable body fluid treatment product constructed as described above, since the second flap is regularly folded in a zigzag shape, even if the product is brought into close contact with the skin, the wearing feeling is not impaired. When the article is worn and curved, the elastic member attached along each folding line of the second flap contracts between both ends fixed to the upper surface of the main body, and acts so as to erect the second flap from the upper surface. . Since the distance between both ends of each elastic member becomes wider toward the outside of the main body, when the article is curved so as to expand upward, the elastic member inside the main body is positioned relatively downward and The member is located above it. As a result, the zigzag folded second flaps form a plurality of pockets that open toward the inside of the body.

[0009]

The details of the disposable body fluid treatment article according to the present invention will be described below by taking a disposable diaper as an example.

FIG. 1 is a partially cutaway perspective view of a disposable diaper 1. The diaper 1 has a diaper body 10 composed of a liquid-permeable topsheet 2, a liquid-impermeable backsheet 3, and a liquid-absorbent core 4 interposed between the sheets 2 and 3, and the body 1
The front-back direction of 0 is composed of a front body 5, a back body 6, and a crotch region 7 located between the two bodies 5, 6. The front and back sheets 2 and 3 form side flaps 13 by joining portions extending from the left and right side edges of the core 4 to each other.
The end flaps 14 are formed by joining the portions extending from the front and rear end edges of the core 4 to each other. The side flap 13 has a recessed edge 12, and the leg elastic elastic members 17 are extended along the recessed edge 12 so that the front and back sheets 2, 3
It is affixed to either or both inner surfaces. A waist elastic elastic member 18 extending in the width direction of the main body 10 is attached to the end flaps 14 of the rear body 6 in an extended state on either or both of the front and back sheets 2 and 3,
A conventional tape fastener 11 is attached to the left right edge. On the left and right sides of the upper surface of the main body 10, extending in the front-back direction,
There is a non-woven sheet flap 20 that can stand upright.

FIG. 2 is an end view taken along the line II-II of FIG. 1, showing the movement of the flap 20 in the vertical direction. As shown in FIGS. 1 and 2, the flap 20 is formed by folding a liquid-permeable or liquid-impermeable band-shaped sheet piece in multiple layers so that the cross section of the main body 10 in the width direction has a zigzag shape.
The main body 10 has a base end portion 25 fixed to a top surface of the main body 10 by a joining line 26 made of a hot-melt adhesive continuously applied in the front-rear direction, and a free edge portion 27 parallel to the base end portion 25. Between the base end portion 25 and the free edge portion 27, inner folding curves 28A, 28B, 28C and outer folding curves 29A, 2 which are parallel to each other are provided.
There is 9B. Among these inner and outer folding curves, at least the inner folding curves 28A, 28B and 28C are arranged such that the relatively upper folding curves are sequentially shifted outward so that the folding curves do not overlap each other. Inner folding curves 28A, 28B, 2
In 8C, elastic stretchable members 30A, 30B, 3 that extend in the front-rear direction on the surface of the nonwoven fabric sheet that has become the inner side by bending
0C is attached. An elastic elastic member 31 is also attached to the free edge portion 27. In addition, outside folding curve 2
Although it is possible to attach the elastic stretchable member to 9A and 29B, the diaper 1 is usually used without attaching.

In the front and rear end regions of the flap 20, a large number of
Nonwoven fabric sheets that overlap in the range indicated by the small dots 40
The non-woven sheet is the main body 1
When contacting the upper surface of 0, it is also bonded to the upper surface
(See Figure 1). However, each inward folding curve 28A, 28B,
As shown in Fig. 1, there is a difference in the joint range between the 28Cs.
There is. That is, at the folding line 28A, the front and rear of the main body 10
Point L from the edge_AAnd L_aUp to the range of non-woven sheets
And the non-woven sheet and the upper surface of the main body 10 are joined together to form a folding curve.
28B, point L from the front and rear edges_BAnd L_bNon-woven in the range up to
Join the cloth sheets together, and in the folding curve 28C , Front and rear edges
To L_CAnd L_cThe non-woven sheets are joined together up to
There is. And the distance from the front and rear edges to these points
Is L_A> L_B> L_C, And L_a> L_b> L_cBecome a relationship
There is. As a result, the elastic members 30A, 30B, 30C
Each of which is substantially fixed to the upper surface of the main body 10,_A~ L_a,
L_B~ L_b, L_C~ L_cCan be expanded and contracted relatively freely in the section
Are in a state of being out of those sections, in other words, before and after the main body 10.
From the edges to those points L_A, L_B, L_C, L_a, L_b, L_cUntil
Between the non-woven fabrics that are bonded to each other on the upper surface of the main body 10
Restrained by, and does not stretch at all or resists stretching
Is in a bad state. The free edge portion 27 is formed by the main body 10.
L from the front and rear edges_D, L_dOpponents it overlaps with up to
Bonded to the upper surface of the other non-woven sheet and / or the main body 10
Yes, L_D≧ L_C, L_d≧ L_cThe relationship is

A flap 20 shown by a chain line in FIG.
Shows the movement when the diaper 1 is worn and it bends in the front-back direction. When the diaper 1 bends, the elastic members 30A, 30B, 30C, 31 contract and the flap 20
Indicates a tendency to stand upright from the upper surface of the main body 10.
At this time, the elastic members 30A, 30B, 30C, 31 already separated in the width direction of the main body 10 have a large separation distance from the center line C-C (see FIG. 1) that bisects the main body 10 in the width direction. The points L _A , L _B , and L that fix them
_{Since C} , L _D , L _a , L _b , L _c , and L _d are brought close to the front and rear edges of the main body 10, these elastic members have the member 30A at the bottom and the member 31 at the top. Separated vertically as well.
As a result, the flap 20 is folded in a zigzag shape.
Is a plurality of pockets 3 opening toward the center line C-C.
5, 36, 37 are formed. The pocket 35 is formed between the flap 20 and the upper surface of the main body 10, and the pocket 3
Reference numerals 6 and 37 are formed by the non-woven sheets of flaps 20 that are folded over each other. The free end portion 27 indicated by a chain double-dashed line in FIG. 2 is in a state obtained when the flaps 20 are joined so that L _D = L _C and L _d = L _c , and in that case, the main body The height from the top surface of the elastic member 30 to the elastic members 30C and 31 is the same, and the free end 27 is horizontal.

When the diaper 1 thus constructed is supplied to a consumer, if it is folded in an extended state as shown in FIG. 1, the vertical flap 20 is tidy and undisturbed despite its high length. . Therefore, diaper 1
Since the position and shape of the flap 20 can be checked very easily when the diaper is opened, the diaper 1 is very easy for the mother to use. Even in the diaper 1 after wearing, the zigzag shape of the flap 20 is not disturbed,
Its high length does not impair the feeling of wearing. Further, if a gap is formed between the wearer's skin and the upper surface of the main body 10, the flap 20 extends vertically so as to stand up as shown in FIG. 2 and side leakage of body fluid can be prevented. In particular, if a large amount of fluid solid matter such as loose stool is excreted, it is received in the pockets 35, 36 and 37 to prevent side leakage, and the solid matter is suppressed from spreading to the wearer's skin. It doesn't get dirty. Further, in the flap 20, the height difference between the adjacent elastic members is affected by the difference in the intervals between the points L _A and L _a , L _B and L _b , and L _C and L _c that fix them. For example, the difference in height between the elastic members 30A and 30B is determined by the difference in distance between the points L _A and L _a and the distance between L _B and L _b , and the degree of bending of the diaper 1. Therefore, in this diaper 1, the size of the opening of each pocket 35, 36, 37 is changed by adjusting the positions of both ends for fixing the elastic member, and the angle with respect to the upper surface of the main body 10 when the flap 20 stands up. Y (see FIG. 2) can be increased or decreased.

In the disposable body fluid treatment product according to the present invention, the front and back sheets 2, 3 and the core 4 can be made of materials commonly used in this technical field. Side flap 1
The sheet 3 can be formed by joining the front and back sheets 2 and 3 to each other, or by extending one of the sheets from the side edge of the core 4 and joining the required sheet material thereto. The flap 20 may be liquid-permeable or liquid-impermeable, and can be made of a sheet material such as a plastic film in addition to the non-woven fabric. In addition to using an adhesive such as a hot melt adhesive as shown in the drawing, a welding technique for a heat-melting material can be used for joining the materials.

[0016]

EFFECTS OF THE INVENTION In the disposable body fluid treatment product according to the present invention, the flap standing up from the upper surface of the product body is folded in multiple layers in a zigzag shape, so that the comfort of wearing the product is impaired even if the length of the flap is increased. There is no. The elastic stretchable member joined along each of the inner folding curves of the folded flap has a fixed position on the upper surface closer to the edge as it is located on the outer side of the main body, so when the worn article bends, The elastic members form a plurality of pockets that are vertically spaced apart from each other and open toward the center of the article, and the flowable solid material flows into the pockets to prevent lateral leakage and spread of the material, and the wearer's skin. Can be kept from being polluted. Further, in such a flap, the inclination angle with respect to the upper surface of the main body when standing up is set to a required size by adjusting the interval between the elastic members arranged in parallel and the fixed position with respect to the upper surface of the main body, and the close contact with the wearer's crotch part is achieved. The area can be increased or decreased.

[Brief description of drawings]

FIG. 1 is a partially cutaway perspective view of a disposable body fluid treatment product (disposable diaper).

FIG. 2 is an end view taken along line II-II of FIG.

[Explanation of symbols]

1 Treatment article (disposable diaper) 2 Top sheet 3 Back sheet 4 Core 10 Main body 13 First flap (side flap) 20 Second flap (vertical flap) 28A, 28B, 28C Inner folding curve 30A, 30B, 30C Elastic elastic member C-C centerline L _A, L _B, L _C fixed point L _a, L _b, L _c fixed point

Claims (1)

[Claims] 1. A liquid-absorbent core is interposed between a liquid-permeable topsheet and a liquid-impermeable backsheet, and a pair of left and right first flaps extending horizontally from the left and right side edges of the core are provided. A pair of left and right stretchable second pair of left and right elastic members provided on the upper surfaces of the left and right side edge portions of the article main body having a standing tendency from the upper surface and extending in the front-back direction of the main body
In a disposable body fluid treatment product having a flap, the cross section in the main body width direction has a zigzag shape between a base end portion in which the second flap is fixed to the upper surface by a joining line extending in the front-rear direction and a free edge portion parallel to the base end portion. As shown in the drawing, the inside of the main body and the outside separated from the main body are alternately bent and overlapped, and the folding curves of the inside that are arranged in parallel are positioned relatively upward so as not to overlap. The elastic stretchable members are sequentially shifted to the outside, and the elastic stretchable members are attached to the second flap in an extended state along each of the folding curves. The article, characterized in that it is fastened to the edge of the body and substantially fixed to its upper surface.