JP2810738B2 - Diaper - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a diaper for use in a diaper, and more particularly, to a baby diaper, which reliably absorbs excrement from a wearer such as an infant or an incontinent person and has a waist when worn. The present invention relates to a diaper that can be suitably used, in which turning of a part is prevented and fitting property is improved, and leakage from a waist part is prevented.

[Problems to be solved by conventional technology and invention]

Conventionally, for a diaper having a liquid-permeable top sheet, a liquid-impermeable back sheet, and an absorbent layer located between the two sheets, various types have been proposed as means for preventing leakage at the waist portion. It has been.

For example, JP-A-59-223301, JP-A-59-144601
As described in Japanese Unexamined Patent Publication, there is an example in which an elastic elastic member is provided around a waist of a diaper to improve fit around the waist.

The waist diaper provided with an elastic elastic member around the waist has a portion extending from the end portion of the absorbent body to both ends in the longitudinal direction, that is, a waist flap portion is sealed around the waist when worn by the action of a tape fastener. The seal portion is intended to follow the movement of the wearer's waist portion.

However, in practice, the lateral stress is applied to the waist flap by the tape fastener,
The edge of the flap portion is separated from the wearer's skin, and a gap is formed between the flap and the wearer's waist. Further, when the activity of the infant (wearer) is added, the gap is further widened, and finally, the flap edge is turned up (this is particularly remarkable in an old-aged child). And
This flap edge turn-up phenomenon promotes excrement leakage, especially pre-leakage. Even if the flap edge is not turned up, if there is a gap between the diaper and the waist as described above, there is a danger that clothes will get in and get wet.

Further, as described in JP-A-63-182402, JP-A-64-26701, etc., a pocket structure is provided around the front and rear waist, and the pocket structure accommodates and absorbs excrement. There is also.

However, although the use of the diaper described above has the effect of preventing leakage, it cannot prevent the waist from being turned up or clothes from entering between the waist and the belly.

SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a diaper that can surely prevent excretion from leaking from the waist and prevent the clothes from getting wet from the waist.

The present invention has a liquid-permeable top sheet, a liquid-impermeable back sheet and an absorbent layer located between the two sheets,
First waist flaps extend from both ends in the longitudinal direction of the absorbent layer, and are bonded and fixed to at least one surface sheet of the first waist flap over at least the entire central portion in the width direction thereof and in the width direction. A second waist flap having a non-joining edge continuous over at least the entire central portion of the second waist flap, the second waist flap is fixedly joined to the topsheet at the inner edge over the entire width direction, and the outer edge is the outer edge. The above object has been achieved by providing a diaper that is not joined to a topsheet and is separated from the first waist flap.

[Action]

According to the diaper of the present invention, a second waist flap having a non-joining edge is provided on the top sheet side of the first waist flap, and the non-joining edge is separated from and independent of the first waist flap, and is provided to the wearer. Because it constitutes a free end that can contact the waist circumference, the second waist flap is free from stress in the direction generated by the tape fastener,
Moreover, since the second waist flap follows changes in the shape and dimensions of the wearer's waist, leakage from the waist is prevented, and at the same time, it serves as a buffer wall, and the waist is turned outward. This prevents the clothing from getting wet from the waist portion.

In addition, by arranging the elastic member in the stretched state on the second waist flap, the waist flap can be surely made to have an upright shape. Therefore, the effect of preventing leakage from the waist portion and the effect of preventing curling are further enhanced in order to more reliably follow the change in the form and size of the waist. Generally, it is known that the waist circumference of an infant changes extremely depending on the posture. For example, for a child weighing 10 kg, there is a difference of about 5 cm between the supine position and the sitting position, and at the same time, a fluctuation of 2-3 cm in the front-back direction of the abdomen.

As described above, the second waist flap also does not function as a leak-proof wall for preventing excrement leakage, and exhibits a function of preventing leakage from the waist portion. However, the second waist flap is formed by a film such as polyethylene or a water repellent. When formed of a water-repellent member such as a treated nonwoven fabric, leakage from the waist is prevented.

In the present invention, since the outer edge of the second waist flap constitutes a free end (non-joining edge), the second waist flap forms a sufficient sealing structure with respect to the wearer's abdomen, and has a remarkable excrement. Exhibits leak prevention function and clothes entry prevention function.

〔Example〕

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

FIG. 1 is a partially cutaway plan view showing a diaper diaper according to an embodiment of the present invention as viewed from the top sheet side, FIG. 2 is a perspective view of the above diaper diaper, and FIG. A in FIG.
4, 5, 6, 7, 8, and 9 are cross-sectional views taken along line A of FIG. 1, each showing a main part of another embodiment of the present invention. It is a sectional equivalent view of the A line.

As shown in FIGS. 1 to 3, the diaper 1 of the present invention comprises a liquid-impermeable back sheet 2 that is outward when worn and a liquid-permeable top sheet 3 that is body-side when worn. And an absorbent layer 6 is disposed between the back sheet 2 and the back sheet 3 at a central portion thereof. Are provided with elastic members 7 extending in the longitudinal direction, and tape fans 8 used to fix the diaper when worn are attached to both sides near one end in the longitudinal direction.

In the diaper 1, a first waist flap 20 extends outward from both ends of the absorbent layer 6 in the longitudinal direction, and a second waist flap 20 is provided above the first waist flap 20 in the drawing. A flap 21 is provided. The first waist flap 20 covers the top sheet 3, the back sheet 2, and the end of the absorber 6 on the top sheet 3 side extending from the inside where the absorber 6 is located, and is disposed between the two sheets. In a three-layer structure in which the barrier sheets 5 are stacked.

The second waist flap 21 is formed by the top sheet 4 disposed on the top sheet side of the first waist flap 20, and the top sheet 4 has an inner edge 4a,
The fixing member 31 is fixed to the top sheet 3 over the entire width direction at the fixing portion 31 and is also fixed to both end regions in the width direction indicated by 33 in FIG. The outer edge is non-fixed and is separated from the first waist flap 20 in the direction of the top sheet, and forms a free end 4b which is a non-fixed edge. The above both end regions 33
Is hatched only in the upper waist flap portion in the figure, and is omitted in the lower waist flap portion.

The second waist flap 21 has a bag-shaped folded portion 30 formed at the free end 4b.
A stretchable elastic member 9 is inserted and extended in the width direction. By disposing the elastic elastic member 9 in an extended state,
The second waist flap can be formed in a more upright shape. The elastic member 9 which can be extended and contracted is bonded with an adhesive or the like at the entire area or at both ends in the width direction inside the bag. Note that the elastic elastic member may be provided on the first waist flap.

In the glove diaper of the present embodiment having the above-described configuration, the second waist flap 21 is in an upright state when worn, and follows the abdomen of the wearer without fail. The seal structure is formed, and it has a function of preventing remarkable excrement leakage at the waist and a function of preventing clothes from entering.

The material for forming the topsheet 3 is not particularly limited as long as it is generally used for a bodily fluid-absorbing article, but has sufficient bodily fluid permeability. Things are desirable. Specifically, for example, a nonwoven fabric made of a single or a mixture of fibers such as polyester and polyolefin, a porous plastic film, and the like can be preferably mentioned.

As a material for forming the back sheet 2, for example,
Plastic film, such as polyethylene film,
A laminate seal of the film and the nonwoven fabric is used. Then, the plastic film as the back sheet preferably has air permeability from the viewpoint of preventing “unevenness” and “rash”.

As a material for forming the water-absorbing layer 6, for example, a material obtained by combining defibrated pulp as a main material with an absorbent paper and a highly absorbent polymer is suitable, and has a high body fluid absorption rate and a large amount of absorption. Are particularly preferred. The absorbing layer 6 is formed in a rectangular shape as shown in FIG.
The shape is not limited to a rectangle, and may be formed in a shape having a so-called leg spot or an hourglass shape in consideration of the fit of the crotch portion, the effect of preventing leakage, and the like.

The barrier sheet 5 is preferably liquid-impermeable and air-permeable. Specific examples of the material include melt-extrusion molding of a polyolefin resin composition containing a filler and further stretching. The obtained porous film can be mentioned. As the polyolefin, a low-density polyethylene or polypropylene alone, a copolymer or a mixture is desirable.

As the top sheet 4 forming the second waist flap 21, a non-woven fabric made of a single or a mixture of fibers such as polyester and polyolefin can be used. preferably texture is a good sheet as further water repellency due P8137 test method JIS standards in order to improve the leakage preventing effect by R ₁₀ to R _4, preferably water repellent sheet R ₁₀ to R ₈ It is preferred that

The length of the upper sheet 4 in the diaper width direction may be in the entire width of the diaper, but may not necessarily be in the entire width of the diaper, and the length of the free direction end region 32 is
Although not particularly limited, the width is preferably equal to or larger than the width of the absorbing layer 6 in order to prevent exudates from leaking from the absorbing layer 6.

Further, the length of the non-fixed portion in the vertical direction of the diaper (the portion substantially constituting the second waist flap) is preferably 5 mm or more, and more preferably 10 to 40 mm.
The height of the formed second waist flap 21 (the height from the surface on the surface material side of the first waist flap 20 to the free end 4b of the second waist flap 21) is not particularly limited. In order to increase the height, it is preferably 5 mm or more, more preferably 10 mm to 30 mm.

Further, a fixing portion 31 between the top sheet 4 and the top sheet 3 constituting the first waist flap and both end regions 33 in the width direction are provided.
Can be performed by any method such as an adhesive or an ultrasonic seal.

The elastic member 9 and the elastic member 7 that can be extended and contracted include elastic members such as tape-like or thread-like polyurethane and rubber, but are not particularly limited as long as they have elasticity.

The length of the elastic member 9 which can be extended and contracted may be in the entire width direction of the diaper, but not necessarily in the entire width direction of the diaper, particularly preferably 150 m.
m to 250 mm.

The bag-shaped folded portion 30 of the top sheet 4 constituting the second waist flap 21 is preferably formed by bonding over the entire length of the top sheet 4 in the width direction with an adhesive or an ultrasonic seal. May be joined together.

In addition, the diaper of the present invention uses the first
The present invention is not limited to the embodiment, and a main part corresponding to the portion shown in the sectional view of FIG. 3 is provided with the elastic elastic body 9 on the second waist flap 21 as shown in FIG. Other than that, even in the case of a diaper (second embodiment) having the same configuration as the first embodiment (the same applies to other embodiments described below), As shown in FIG. 5, a second waist flap 21 is formed by one of the folded pieces of the top sheet 4 folded in half, and the other folded piece is entirely fixed to the first waist flap 20 (the fixed portion is (Not shown), and a diaper (third embodiment) may be used in which the fixing is further strengthened.

Further, the second waist flap 21 has an upright shape as shown in FIG. 6, and the stretchable elastic body 9 is disposed at the free end 4b in the same manner as in the first embodiment. Fourth Embodiment).

Further, the present invention is not limited to the above, and can be arbitrarily changed without departing from the gist of the present invention. For example, the second waist flaps are not limited to those provided at both ends in the longitudinal direction as in the above embodiment, but may be provided at any one of the both ends. In addition, the second waist flap is not limited to the one that is fixedly joined at both end regions in the width direction as in the above-described embodiment. Even if the non-joining edge is formed over the entire region in the width direction, Other than these, it may be fixed by bonding.

〔The invention's effect〕

INDUSTRIAL APPLICABILITY The diaper of the present invention can reliably prevent excretion from leaking from the waist portion, and can also prevent clothes from entering and leaking from the waist portion.

That is, the free end (non-joining edge) of the second waist flap
Is in a state separated from the first waist flap and has an upright shape, so the second waist flap is
It can easily follow the change in the shape and dimensions of the wearer's waist, and the part that stands up above the first waist flap and separates from the upper part of the first waist flap serves as a leak-proof wall to prevent leakage from the front and rear waist parts. Further, the waist portion serves as a buffer wall against a change in shape of the waist portion, so that the waist portion is prevented from turning outward and clothes are prevented from entering and leaking from the waist portion.

Further, by forming the second waist flap with a water-repellent and liquid-impermeable sheet member such as a water-repellent nonwoven fabric,
Exudate leakage from the waist front and back is also prevented.

[Brief description of the drawings]

FIG. 1 is a partially cutaway plan view of an embodiment of the diaper of the present invention viewed from the top sheet side, FIG. 2 is a perspective view of the above diaper, and FIG. FIGS. 4, 5 and 6 are cross-sectional views taken along the line AA in FIG. 1 showing the main parts of another embodiment of the present invention. 1; diaper, 2; back sheet 3; top sheet, 4; top sheet 4a; inner edge 4b; free end (non-fixed edge) 5; barrier sheet, 6; absorbent layer 7; elastic member; 8; tape fastener 9; Elastic elastic member 20; first waist flap 21; second waist flap 30; bag-like folded portion 31; fixed portion 32; free end region 33;

Claims (1)

(57) [Claims] A liquid-permeable top sheet, a liquid-impermeable back sheet, and an absorbent layer located between the two sheets;
First waist flaps extend from both ends in the longitudinal direction of the absorbent layer, and are bonded and fixed to at least one surface sheet of the first waist flap over at least the entire central portion in the width direction thereof and in the width direction. A second waist flap having a non-joining edge that is continuous over at least the entire central portion thereof, the second waist flap is fixedly joined to the top sheet at the inner edge over the entire width direction, and the outer edge of the second waist flap has the outer edge of the surface. A diaper for use in a diaper, wherein the diaper is separated from the first waist flap without being joined to the sheet.