JP2001293031A - Disposable absorbent product - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a disposable absorbent product wherein a side leakage- preventive effect is high when it is used alone or with an extra pad on it and in addition, the fitting feeling is excellent as well. SOLUTION: For a barrier cuff, a length in the product width direction in an erection zone Z is not less than 10 mm. Then, in the vicinity of the erecting distal edge E1 of the barrier cuff, an elastic stretching member 5A for contact is provided. Also, an elastic stretching member 5B for erection is provided in the vicinity of the erecting proximal edge E2 in the erection zone Z of the barrier cuff. In this case, the effective stretching length of the elastic stretching member 5B for erection is shorter than the effective stretching length of the elastic stretching member 5A for contact.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a disposable absorbent article such as a fastening tape type, a pants type disposable diaper or a sanitary napkin, and more preferably an absorbent pad type disposable paper diaper is used in combination. It can be applied to any type of disposable diaper.

[0002]

2. Description of the Related Art In recent years, disposable absorbent articles such as disposable disposable diapers and sanitary napkins, which have leak-proof means such as leak-proof gathers, three-dimensional gathers, and double cuffs, are often used. Also, in a disposable disposable diaper equipped with this kind of leak-proof means, when the amount of bodily fluid is large and a larger absorbing power is required, especially when used as an adult diaper, the absorbent and economical In view of the above, an absorbent pad having no barrier cuffs on both sides or a pad-type diaper having barrier cuffs on both sides is additionally used on the absorbent body.
In the following, unless otherwise specified, an absorbent pad or a pad-type diaper that is superimposed on the use surface side of the main body of the disposable diaper is referred to as an “auxiliary pad”.

[0003]

However, when the auxiliary pad is overlaid on the surface of the product disposable diaper body when worn, the thickness of the absorbent pad of the auxiliary pad to be superimposed is increased, and the auxiliary pad of the absorbent pad of the disposable diaper main body is added. The rigidity of the overall structure is increased due to the double absorber, which hinders free deformation of the barrier cuffs. It was found that it did not exert any effect.

[0004] However, it is assumed that the adhesion to the skin is ensured by increasing the stretching force of the gathers.
There is a problem that excessive contraction force causes the wearer to feel a feeling of pressure, and the wearing feeling becomes extremely poor.

Accordingly, an object of the present invention is to provide a disposable absorbent article which has a high effect of preventing lateral leakage and which is excellent in a feeling of being worn, even when used alone or when an auxiliary pad is used repeatedly.

[0006]

The present invention which has solved the above-mentioned problems is as follows. <Invention according to claim 1> In a disposable absorbent article having a leg-surrounding barrier cuff that stands upright on a use surface side in a use state, the barrier cuff has an upright region having a length in a product width direction of 10 mm or more; The barrier cuff has a contact elastic elastic member in the vicinity of a rising distal edge thereof, and the barrier cuff has a standing elastic elastic member in the vicinity of a rising proximal edge in an upright region of the barrier cuff. A disposable absorbent article characterized in that the effective elastic length of the standing elastic elastic member is shorter than the elastic length.

<The invention according to claim 2> The disposable absorbent article according to claim 1, wherein the elastic stress of the standing elastic elastic member is larger than the elastic stress of the elastic elastic member for contact.

<Invention according to claim 3> The stress (per 15 mm width and 100 mm length) at a portion where the elastic elastic member for contact is disposed at 60 to 150% elongation is 0.10 to 1.3.
0N, 60 of the portion where the elastic elastic member for standing is arranged.
Stress at 150% elongation (width 15mm, length 100m
The absorbent article according to claim 1, wherein (per m) is 0.20 to 2.00 N, and the stress is larger in the latter than in the former.

(Functions and Effects) The functions and effects of the first to third aspects will be described later together with the following embodiments, because it seems to be clearer.

<Invention of Claim 4> The base portion of the barrier sheet folded back at the upstanding distal edge to be doubled is fixed to the use surface of the product. The disposable absorbent article according to claim 1, wherein a boundary is a proximal edge of a barrier cuff, and a contact elastic elastic member and a standing elastic elastic member are fixed between the barrier sheets under extension.

<Invention according to claim 5> The base of a double barrier sheet in which two sheets of the same type or different types are stacked,
The boundary between the fixed portion and the unfixed upright area is fixed to the use surface of the product, and the boundary of the barrier cuff is the proximal edge of the barrier cuff. The contact elastic elastic member and the elastic elastic member for erecting are provided between the barrier sheets. 2. The method of claim 1, wherein the element is fixed under extension.
The disposable absorbent article according to the above.

(Effects) By making the barrier sheet double as in claims 4 and 5, not only the leakproofness is enhanced, but also the shape retention as a barrier cuff is particularly improved, and it turns up during wearing. The effect of preventing leakage due to such factors is high.

<Invention according to claim 6> A waterproof sheet is sandwiched between double barrier sheets.
The disposable absorbent article according to the above.

(Operation and Effect) This operation and effect will be described later.

According to a seventh aspect of the present invention, there is provided a disposable absorbent article having a leg cuff for free standing on the side of use in a use state, wherein the length of the upright region of the barrier cuff in the product width direction is 10 mm or more. Yes,
Both ends in the longitudinal direction of the upright region are fixed to the use surface side of the product, and at least on the abdomen, the fixing start position of the upstanding distal edge side is longer than the fixing start position of the upstanding proximal edge side. The barrier cuff has a contact elastic elastic member in the vicinity of the rising distal edge of the barrier cuff, and the elastic elastic member for standing in the region of the barrier cuff near the upright proximal edge in the upright region. A disposable absorbent article comprising a member, wherein the effective elastic length of the standing elastic elastic member is shorter than the effective elastic length of the contact elastic elastic member.

(Function and Effect) This function and effect will be described later.

[0017]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below in more detail with reference to embodiments shown in the drawings. In addition, as a disposable absorbent article of the present invention, in addition to a disposable diaper, a napkin or the like can be applied. In addition, since it is apparent that the present invention is also applicable to pants-type disposable diapers, in the following, only the tape-type disposable disposable diapers combined with auxiliary pads for adults will be described below, and an example of application to pants-type disposable diapers will be described. Omitted.

In the disposable diaper shown in FIG. 1 and FIG. 2, a liquid-permeable surface sheet 1 having a rectangular shape, such as a non-woven fabric or a porous film, and a polyethylene or poly-laminate non-woven fabric, microvoids are formed, and vapor is transmitted but liquid is transmitted. An absorbent body 3 made of cotton-like pulp or the like and having an appropriate shape such as a rectangular or hourglass shape and having a certain degree of rigidity is interposed between the hourglass-shaped liquid-impervious back sheet 2 in a form not to be made. A high-absorbing polymer can be added to the absorber 3. The absorber 3 can be covered with upper and lower tissue papers 3A and 3B for absorption, and constitutes an absorbing element.

The liquid-permeable topsheet 1 has a rectangular shape wider than the absorbent element, extends slightly outward from the side edge of the absorbent element,
The liquid-impermeable backing sheet 2 is fixed with a hot melt adhesive or the like (the fixed part in the cross section including this fixed part is indicated by *).

On both sides of the disposable diaper, there are formed leg cuffs B which protrude toward the surface of use and stand up freely.
The barrier cuff B has a barrier sheet 4 substantially continuous in the width direction, two elastic elastic members for contact 5A, 5A in an appropriate number of embodiments, and three standing elastic members in an appropriate number of embodiments. And the elastic elastic members 5B, 5B, 5B. These elastic members can be made of, for example, thread rubber or belt-like rubber. Reference numeral 6 denotes a flap for preventing leakage on the back side.
An elastic elastic member 7B for pressing is provided at the base of the free part. 8 is a fastening tape.

Further, the barrier cuffs B are formed in two layers by shortening the inner surface side of the barrier sheet 4 and stepwise inwardly folding the barrier sheet 4, and the elastic elastic members 5A, 5A for contact and the elastic elastic members 5B, 5B for standing. , 5B are wrapped in a state where they are fixed with a hot melt adhesive or the like. In the embodiment, the fold constitutes the distal edge E1.

The outer portion in the width direction of the inner layer of the double barrier sheet 4 is fixed to the end of the liquid-permeable top sheet 1 with the start end on the surface of the liquid-impermeable back sheet 2 and the outer portion of the outer layer of the barrier sheet 4. Are also fixed to the surface of the liquid-impermeable back sheet 2 with a hot melt adhesive or the like.

As a result, the beginning of the fixing of the inner layer of the double barrier sheet 4 to the liquid-permeable topsheet 1 forms the proximal edge E2 of the barrier cuff B. Around the leg, an area inside the proximal edge E2 is an upright area Z that is not fixed to the product main body and stands up freely.

The length L in the product width direction of the upright area Z around the leg of the barrier cuff B is preferably 10 mm or more, and particularly preferably 30 to 80 mm in the case of disposable diapers.

On the other hand, as shown in FIG. 1, focusing on the fixed relationship between the barrier sheet 4 and the product other than the barrier sheet 4 at the longitudinal end, the longitudinal end portions of the barrier sheet 4 in the upright region Z are used surfaces of the product. In a specific embodiment, the back side flap 6 is provided on the back side.
Further, since it is fixed on the liquid-permeable topsheet 1 with a hot-melt adhesive and no flap is provided on the ventral side, it is fixed directly on the liquid-permeable topsheet 1 with a hot-melt adhesive.

In particular, as shown in FIG. 1 by a halftone dot showing a fixing portion F of the hot melt adhesive, the fixing start position f of the barrier sheet 4 on the abdominal side on the standing distal edge E1 side.
1 deviates from the fixing start position f2 on the upright proximal edge E2 side toward the longitudinal edge side of the product. The fixing start position f3 of the barrier sheet 4 on the back side is parallel to the longitudinal edge of the product and does not have a deviated relationship.

Under such a relationship, the contact elastic elastic members 5A, 5A are arranged near the rising distal edge E1 of the barrier cuff B, and stand near the rising proximal edge E2 in the rising region Z of the barrier cuff B. Elastic elastic members 5B, 5B, 5B are arranged.

The lengths of f1 and f3 of the contact elastic members 5A and 5A are substantially equal to those of f2 and f3 of the standing elastic members 5B, 5B and 5B.
Is fixed to the barrier sheet 4 with a hot-melt adhesive under elongation so that the length of と is contracted. Therefore, the effective elastic length of the standing elastic elastic members 5B, 5B, 5B is configured to be shorter than the effective elastic length of the contact elastic elastic members 5A, 5A.

The upper part of FIG. 2 shows a state in which the disposable diaper is extended in the longitudinal direction. When the disposable diaper is attached, as shown in the lower part of FIG. Since the contracting force of the elastic members 5A,... And 5B acts, the front and rear ends of the product maintain the same shape as the upper part of FIG.
... and 5B ... cause the barrier cuff B to rise.

At this time, the side flaps are deformed and lifted, and the absorber 3 is slightly deformed and lifted to form a deep pocket space.

In addition, in this raised state, the strong contracting force of the elastic members 5B, 5B, 5B for standing acts on the barrier cuff B itself, so that the barrier cuff B acts so as to stand almost vertically. At the same time, the contact elastic elastic members 5A, 5A raise the barrier cuffs B by their contracting force while being weak. However, the elastic elastic member for contact 5
Even though the contraction force of A and 5A is weak, the rising force of the barrier cuff B by the standing elastic elastic members 5B, 5B and 5B is large, so that the rising of the barrier cuff B is surely secured as a whole. And since the contraction force of the contact elastic elastic members 5A, 5A is not strong, there is no excessive pressure contact with the wearer's skin.

Further, the concept of standing up of the barrier cuff is conceptually described with reference to FIG. 5. The effective extension lengths of the contact elastic elastic members 5A and 5A are long and their contraction force is weak. Since the effective extension length of the elastic elastic members 5B, 5B, 5B is short and the contraction force is strong, the contraction force toward the center in the longitudinal direction is larger at the proximal edge side than at the distal edge side. When the barrier cuff portion is viewed from the side, the barrier cuff portion stands up in a fan shape as shown in FIG. As a result, at the time of wearing by the wearer, as shown in the figure (B), the front and rear sides are weak at the distal edge and the center side is relatively strongly in contact with the leg circumference. As a result, it is possible to appropriately cope with the fact that liquid leakage easily occurs particularly from the center side of the distal edge.

According to an embodiment of the present invention, barrier cuffs B
As shown in FIG. 6, even if the auxiliary pad 10 is arranged on the side of use, the barrier cuffs B can be secured, so that the barrier cuffs B do not fall or lie down. Thus, the auxiliary pad 10 can be securely wrapped.

On the other hand, as shown in FIG. 1 where the fixing portion F of the hot melt adhesive is indicated by a halftone dot, the manner of fixing the end of the barrier cuff B on the ventral side is devised. That is, as shown in FIG. 4, since the end portion 4A is a longitudinal end portion, the standing height of the distal edge of the barrier cuff B is small, and the base of the barrier cuff B is restrained by the presence of the fixing portion F. Have been. On the other hand, in the 4B portion on the center side, since the fixed portion F does not exist, the barrier cuff B tends to rise high due to the elastic elastic members 5B, 5B, 5B for raising. However, since the upright height of the distal edge of the barrier cuff B at the end 4A is small, the barrier cuff B acts to press against the distal edge of the barrier cuff B at the center 4B. As shown in the lower part of FIG. 4, the barrier cuff B rises while expanding its middle part in the height direction outward. Thereby, a pocket of the barrier cuff B is formed, and the auxiliary pad 10 is formed.
Envelopes will also be secure.

By the way, as a material of the barrier sheet, a breathable and liquid-impermeable plastic film or a water-repellent nonwoven fabric formed by silicon treatment can be used. Further, as shown in FIG. 7, in order to reliably prevent liquid permeation, a waterproof sheet 7C made of a plastic film or the like may be interposed between a water-repellent nonwoven fabric or a non-water-repellent nonwoven fabric. As a preferable nonwoven fabric, a polypropylene nonwoven fabric manufactured by a melt blown method is more preferable. A sheet having a basis weight of 5 to 30 g / m ² is adhered in a bag-like form, and the bag-shaped edge is a free end. The elastic member may be a plurality of filaments made of natural rubber, synthetic rubber, polyurethane, or the like, or a belt. In the embodiment, since the strong contraction force of 5B acts on the barrier cuff B itself, the barrier cuff B acts so as to stand almost vertically. At the same time, two 560-denier urethane yarns as the elastic elastic member for contact 5A are stretched 280% and 650 m in the longitudinal direction.
m, and set up as 56
Three 0-denier urethane yarns were installed at an interval of about 5 mm in a 280% stretched state over a length of 420 mm in the longitudinal direction.

When the tape-type diaper is mounted, the elongation rate of the elastic elastic member 5A for contact and the elastic elastic member 5B for standing up in the barrier cuff B changes by 60 to 150%, respectively. Member 5A
O. 29 to 1N, preferably 0.39 to 0.90N. 39-1.50N, preferably 0.
If it is 49 to 1.38 N, the wearer does not feel a feeling of oppression and does not create a gap around the leg, and can exhibit excellent leakage prevention performance. In the above-described embodiment, the elastic elastic member for contact 5A of 60 to 150 is used.
The stress at% elongation is O. 39-O. 90N, the stress at the time of 60-150% elongation of the elastic elastic member 5B for standing up is 0.49.
３８1.38N.

Since the present invention also includes sanitary napkins and the like having a barrier cuff, taking these factors into account, the stress (width 15 mm, length (Per 100 mm) is 0.10 to 1.30 N, and the stress (width 15 m
m, per 100 mm length) is preferably 0.20 to 2.00 N.

In the above embodiment, the leakage preventing flaps 6 are provided only on the back side, but they can be provided on the ventral side, or they can be omitted. If necessary, a gasket cuff can be formed by providing an elastic member along the longitudinal direction at a side flap portion outside the barrier cuff B in the width direction.

[0039]

As described above, according to the present invention, even when used alone or when auxiliary pads are used one on top of another, the effect of preventing lateral leakage is high and the feeling of wearing is excellent.

[Brief description of the drawings]

FIG. 1 is a partially broken plan view of a disposable paper diaper.

FIG. 2 is a view taken along line 2-2.

FIG. 3 is a view taken along line 3-3.

FIG. 4 is a view taken along arrows 4A-4A and 4B-4B.

FIG. 5 is an explanatory diagram of a standing state of a barrier cuff.

FIG. 6 is a cross-sectional view of an arrangement of auxiliary pads.

FIG. 7 is a cross-sectional view of another embodiment.

[Explanation of symbols]

1 ... liquid-permeable top sheet, 2 ... liquid-impermeable back sheet, 3 ...
Absorber, 4 ... Barrier sheet, 5A ... Contact elastic elastic member, 5B ... Standing elastic elastic member, 6 ... Back side leakage prevention flap, 8 ... Fixing tape, B ... Barrier cuff, E1 ...
Distal edge, E2: proximal edge, F: fixation site, Z: standing area,
f1, f2, f3 ... fixed start position.

 ────────────────────────────────────────────────── ─── Continuing on the front page (72) Inventor Haruhiko Nasa 4776-4 Ojisukuji, Kashikawa-cho, Shiotani-gun, Tochigi Pref. AA09 CC10 CC12 CC16 CE06

Claims (7)

[Claims] 1. A disposable absorbent article having a leg cuff barrier cuff that is free to stand on a use surface side in a use state, wherein the barrier cuff has a length in the product width direction of an upright area of one.
0 mm or more, having an elastic elastic member for contact in the vicinity of the rising distal edge of the barrier cuff, and having an elastic elastic member for rising in the vicinity of the rising proximal edge in the upright region of the barrier cuff, A disposable absorbent article, wherein the effective elastic length of the standing elastic elastic member is shorter than the effective elastic length of the elastic elastic member. 2. The disposable absorbent article according to claim 1, wherein the elastic stress of the standing elastic elastic member is larger than the elastic stress of the elastic elastic member for contact. 3. The part 60 in which the elastic elastic member for contact is arranged.
Stress at 150% elongation (width 15mm, length 100m
m) is 0.10 to 1.30 N, and the stress (per 15 mm width, per 100 mm length) of the portion where the elastic elastic member for standing is arranged at 60 to 150% elongation is 0.20 to 0.20 N.
The absorbent article according to claim 1, wherein the stress is 2.00 N, and the stress is larger in the latter than in the former. 4. The base of the barrier sheet folded back at the upstanding distal edge to be doubled is fixed to the surface of use of the product, and the boundary between the fixed portion and the unfixed upright area is near the barrier cuff. The disposable absorbent article according to claim 1, wherein the elastic elastic member for contact and the elastic elastic member for standing are fixed between the barrier sheets under extension. 5. The base of a double barrier sheet in which two sheets of the same type or different types are stacked, is fixed to the surface of use of the product, and the boundary between the fixed portion and the unfixed upright area is a barrier. 2. The disposable absorbent article according to claim 1, wherein the article is a proximal edge of a cuff, and an elastic elastic member for contact and an elastic elastic member for rising are fixed between the barrier sheets under elongation. 6. The disposable absorbent article according to claim 4, wherein a waterproof sheet is sandwiched between the double barrier sheets. 7. A disposable absorbent article having a leg cuff barrier cuff which stands upright on the use surface side in a use state, wherein the length of the upright region of the barrier cuff in the product width direction is 10 m.
m or more, and both ends in the longitudinal direction of the upright region are fixed to the use surface side of the product, and at least on the abdomen, the upset distal edge side fixation start position is the upright proximal edge side fixation start position More, it is deviated to the longitudinal edge side of the product, has an elastic elastic member for contact in the vicinity of the rising distal edge of the barrier cuff, and the side near the rising proximal edge in the rising region of the barrier cuff. A disposable absorbent article, characterized in that the standing elastic elastic member has a shorter effective elastic length than the contact elastic elastic member.