JPH0622345Y2 - Sanitary napkin - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Use) The present invention relates to a so-called sanitary napkin for absorbing and retaining menstrual blood, and more particularly to a sanitary napkin having a side flap structure.

(Prior art and its problem) Conventionally, in a sanitary napkin, as a means for preventing so-called side leakage of menstrual blood, a pocket or a side flap is provided on a laterally opposed side portion of the napkin body, and further, the side flap is provided. It is known that an elastic stretchable member is provided.

However, in the wearing condition of the napkin provided with such a structure, the structure causes discomfort to the skin of the wearer and the napkin is deformed in a complicated manner. I have not solved it yet.

The object of the present invention is to provide a napkin which can prevent menstrual blood from leaking sideways without causing discomfort to the wearer, even though the menstrual blood is prevented from leaking sideways on the laterally opposite sides of the napkin. To provide.

(Means for Solving the Problems) The present invention is predicated on a sanitary napkin in which an absorbent core is interposed between a liquid-permeable top sheet and a liquid-impermeable back sheet to form a napkin body. .

The present invention solves the above problem by taking the following means on the above-mentioned premise.

The lateral outer portion of the side flap made of a liquid impermeable sheet is fixed to the laterally opposite sides of the napkin body.

A string-like object having elasticity in the thickness or the radial direction is fixed along the longitudinal direction between the lateral outer side portion of the side flap and the inner edge opposed thereto.

Aside from the fixed portion of the side flap, the other portion of the side flap is folded back along the string-like object.

In an embodiment, wrapping the string-like material with a portion on the folding line of the folding portion of the side flap, the longitudinally facing end portion of the folding portion of the side flap, a lateral outer portion of the side flap, of the napkin body. It is preferable to fix it to one of the upper surfaces, and to position the portion of the site flap on the folding line where the string-like object is located on the side facing laterally on the core.

(Operations and Effects) According to the sanitary napkin of the present invention having the above-described configuration, the sanitary napkin is excreted in the central region of the top sheet of the napkin main body and flows laterally while passing through the top sheet and absorbed by the core. The menstrual blood is prevented from leaking to the outside by the levee function formed by the portion on the folding line of the side flap and the string-like material. Even if some amount of menstrual blood may go beyond the embankment function part to the outside, a water-impermeable side flap extends outside the embankment function part, which adheres to the wearer's skin to prevent menstruation. Since the flow is blocked, the side leakage does not occur and the underwear is not polluted.

Although the string-like material of the embankment function portion projects from the surface sheet, since it has elasticity (cushioning property) in its thickness or radial direction, it does not give a sense of discomfort to the skin of the wearer,
When it receives a complex deforming force such as pressure or twist during wearing, it fits comfortably to the skin, and when such deforming force is released depending on the posture of the wearer, it restores and adheres to it. To maintain the side leakage prevention state of the menstrual blood.

(Embodiment) An embodiment of the present invention will be described below with reference to the drawings.

In FIGS. 1 and 2, the napkin body 1 is composed of a liquid-permeable top sheet 2, a liquid-impermeable back sheet 3, and an absorbent core 4 interposed between these sheets. Front and back sheets 2, 3 from laterally opposite side edges of the core 4 to the outside
Is extended, and the extended portions 2a and 3a are integrally joined by a hot melt type adhesive or a welding means.

Liquid-impervious side flaps 5 are arranged on the laterally opposite side portions of the napkin body 1. The center area of the side flap 5 is widened by expanding the outer side in an arc shape, and the outer side portion 5a is integrally fixed to the extending portion 2a of the topsheet 2 by a hot-melt type adhesive or a welding means. There is. Side flaps 5 on a line along the lateral side above the core 4
A string-like material 6 is integrally attached to a substantially lateral center part of the with a hot melt adhesive. The other portion (folding portion) 5b of the side flap 5 other than the fixed portion is folded back to the outside so that the string-like material 6 is wrapped by a part of the side flap 5, and the longitudinally opposed end portion 5c is the fixed portion. 5a
Is integrally fixed to the upper surface of the substrate with a hot melt adhesive or a welding means. However, the string-like object 6 may be positioned without wrapping it in the part 5d on the folding line, and the outer part 5a of the side flap 5 may be left with an appropriate width on the lateral outer side of the extending part 2a of the topsheet 2. Although it can be fixed to the extending portion 2a, in that case, the vertically opposed end portions 5c of the folded portions 5b of the side flaps 5 are fixed to the extending portion 2a of the topsheet 2 where the outer portion 5a is not located. You may.

The string-like material 6 needs to have elasticity (cushioning property) at least in its thickness or radial direction, and its cross section may be circular, elliptical, quadrangular, or the like, but its longitudinal diameter or height dimension It is preferably 0.5 to 5 mm. Since the string-like material 6 cooperates with the portion 5d of the side flap 5 and projects from the upper surface of the topsheet 2 in the upper surface region of the core 4, it exerts an embankment effect against the lateral outflow of menstrual blood. is there. Of course, the string-like material 5 does not prevent it from having elasticity in the length direction in addition to cushioning properties.

A pocket may be formed between this portion 5d and the surface sheet 2 without joining the vicinity of the portion 5d on the folding line of the side flap 5 where the string-like object 6 is located to the surface sheet 2.

In the embodiment shown in FIG. 3, the lateral portion of the core 4 is rolled up by the extension portion 2a of the topsheet 2 and positioned on the lower surface of the core, and the extension portion 3a of the backsheet 3 is widened. A side flap 5 with a string 6 interposed is formed at the portion 3a.

The topsheet 2 can be made of a nonwoven fabric, a porous plastic film, etc., the backsheet 3 and the side flaps 5 can be made of a plastic film, a waterproof nonwoven fabric, etc., and the string 6 can be made of rubber, plastic, or the like. Particularly, the string-like material 6 is preferably made of foam such as polyurethane because it has excellent flexibility.

The front and back sheets 2 and 3 at the longitudinally opposed ends 7 of the napkin body 1 are integrally joined by means similar to known ones, for example, welding or thermocompression bonding means. In addition, a fiber layer having a low apparent density is interposed between the surface sheet 2 and the core 4 to generate a large number of voids between the surface sheet and the core, so that the space between the two embankments located on the laterally opposite sides. By increasing the substantial height or depth of the recess defined by
The overflow of menstrual blood may be more effectively prevented.

[Brief description of drawings]

FIG. 1 is a plan view of a sanitary napkin according to an embodiment of the present invention. FIG. 2 is a sectional view taken along line II-II in FIG. FIG. 3 is a sectional view of another embodiment corresponding to FIG. 1: napkin main body, 2: front surface sheet 3: back surface sheet, 4: core 5: side flaps, 5a: outside portion 5b: folded portion, 5c: longitudinally opposed end portion 5d: portion on folded line 6: string-like object

Claims (1)

[Scope of utility model registration request] 1. A sanitary napkin in which an absorbent core is interposed between a liquid-permeable topsheet and a liquid-impermeable backsheet to form a napkin body, wherein the napkin body is laterally opposed to the napkin body. A lateral outer side portion of the side flap made of a liquid sheet is fixed, and a string-like object having elasticity in a thickness or a radial direction along a longitudinal direction between the lateral outer side portion of the side flap and an inner edge facing the side flap. The napkin is fixed, and the other parts of the side flap except the fixed part are folded back along the string-like object.