JP2004129923A - Absorbent article for woman - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an absorbent article for women to be used by insertion to a space between labia, by which contamination on the body or an underwear, or the like, and deterioration in feeling of use are prevented, since the article hardly comes off, or is hardly deviated in position, and an absorbed liquid is hardly leaked during wearing. <P>SOLUTION: This absorbent article 1 for women includes: a liquid holding absorbent layer; and a liquid impermeable leakage preventing layer, and is used by insertion to the space between the labia. An adhesive applying part 5 where an adhesive is applied is arranged over the whole circumference of a peripheral edge part on the skin abutment surface 4 of the absorbent layer. <P>COPYRIGHT: (C)2004,JPO

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a feminine absorbent article used by being inserted into a space between labia.
[0002]
Problems to be solved by the prior art and the invention
Conventionally, as an absorbent article for women used for absorbing menstrual blood, falling objects, incontinence urine, etc., an absorbent article placed and fixed on the inner surface of underwear such as shorts and panties, such as a sanitary napkin A panty liner and a tampon used by being inserted into a vagina are widely known.
As an absorbent article for women whose usage differs greatly from these, a liquid-permeable top sheet, a liquid-impermeable back sheet, and an absorber (absorbent nucleus) located therebetween are provided. There has been proposed an absorbent article that is used by being folded into two along the axis and inserted into the space between the labia of a wearer (see Patent Document 1).
However, in this absorbent article, the wearer's activity is likely to cause falling off or misalignment, which may stain the body, underwear, and the like, or deteriorate the feeling of use. Further, the liquid retention property is not sufficient due to its thinness and the like, and the absorbed liquid may leak out when a large amount of liquid is absorbed or when pressure is applied.
[0003]
Therefore, an object of the present invention is an absorbent article for women used by being inserted into a space between labia, which is less likely to fall off or displace during wearing, leaking of absorbed liquid, and the body, underwear, etc. It is an object of the present invention to provide an absorbent article that can prevent the contamination of the product and the deterioration of the usability.
[0004]
[Patent Document 1]
JP-T-2001-506168 [0005]
[Means for Solving the Problems]
The present invention provides a female absorbent article that includes a liquid-retentive absorbing layer and a liquid-impermeable leak-proof layer and is used by being inserted into the space between the labia, and a peripheral portion of the skin-contacting surface of the absorbing layer. The above object has been attained by providing a female absorbent article in which a pressure-sensitive adhesive-coated portion coated with a pressure-sensitive adhesive is provided over the entire periphery of the peripheral portion.
[0006]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, the present invention will be described based on preferred embodiments with reference to the drawings. As shown in FIGS. 1 to 3, a women's absorbent article 1 as one embodiment of the present invention includes a liquid-retentive absorbing layer 2 and a liquid-impermeable leak-proof layer 3. The leakage prevention layer 3 is laminated.
[0007]
The absorbent layer 1 is composed of a liquid-permeable top sheet 21 and a liquid-retentive absorber 22, and the leak-proof layer 3 is composed of a liquid-impermeable back sheet 31.
The top sheet 21 and the back sheet 31 each have an elliptical shape in plan view, and are joined to each other at a portion extending from the peripheral edge of the absorber 22. The absorber 22 is sandwiched and fixed between the top sheet 21 and the back sheet 31 and has an elliptical shape similar to the front and back sheets 21 and 31 in plan view.
[0008]
The article 1 has a general shape of a vertically long flat shape, a length L (see FIG. 3) of 50 to 110 mm, a width W (see FIG. 3) of 30 to 70 mm, and a thickness T (see FIG. 2) of 1 to 15 mm. It is.
[0009]
The article 1 is bent in the width direction so that a bent portion is formed along the longitudinal direction, and is used by being inserted into a space between labia of a wearer. In the use state, the entire surface of the top sheet 21 opposite to the absorber 22 side is the skin contact surface 4 that contacts the wearer's labia and / or a portion located between the labia.
[0010]
At the periphery of the skin contact surface 4 of the topsheet 21, an adhesive application section 5 coated with an adhesive is provided over the entire periphery of the periphery.
The adhesive application section 5 extends from the peripheral edge of the skin contact surface 4 (same as the peripheral edge of the topsheet 21 or the peripheral edge of the article 1 in the present embodiment) over the entire periphery of the peripheral portion. Provided with a width of 5 mm or more and 15 mm or less in the direction (the direction perpendicular to the tangent line) prevents the absorbed liquid from leaking out while suppressing the decrease in the absorption area, and furthermore, the fixability to the wearer's skin. It is preferable from the viewpoint of increasing the width, and it is particularly preferable that the width is 5 mm or more and 10 mm or less. The outer peripheral edge of the adhesive application section 5 is usually located at a position coinciding with the peripheral edge of the skin contact surface 4. However, there is a structure in which liquid does not leak out at the peripheral edge of the skin contact surface 4. In some cases, it may be located at a position slightly separated from the peripheral edge (for example, a position separated by about 2 to 4 mm).
[0011]
The width W1 (see FIG. 2) of the pressure-sensitive adhesive application section 5 is not necessarily required to be uniform over the entire circumference of the skin contact surface 4.
[0012]
The adhesive application section 5 is formed by applying a solid adhesive on the surface of the top sheet 21. By applying the pressure-sensitive adhesive with a solid coating without gaps, it is possible to effectively prevent the liquid from oozing out from the peripheral portion of the topsheet 1.
The pressure-sensitive adhesive used for forming the pressure-sensitive adhesive application section 5 is formed from a viewpoint of forming a leak-proof region that does not allow liquid to permeate with the pressure-sensitive adhesive, is less irritating to the skin, is stable over time as a pressure-sensitive adhesive, and is inexpensive. From the viewpoint of selecting styrene-ethylene-butylene-styrene block copolymer (SEBS) or styrene-ethylene-propylene-styrene block copolymer (SEPS) from 30 to 70% by weight, hydrogenated hydrocarbon resin Is particularly preferable. The pressure-sensitive adhesive contains 40 to 60% by weight and 5 to 15% by weight of a process oil.
[0013]
The coating amount of the pressure-sensitive adhesive in the pressure-sensitive adhesive application section 5 is preferably ²⁰ to 80 g / m ² , more preferably 30 to 80, from the viewpoint of forming a leak-proof region through which the liquid does not pass by the pressure-sensitive adhesive and obtaining sufficient adhesion to the skin. 50 g / m ² is preferred.
[0014]
In the absorbent article 1 of the present embodiment, a second pressure-sensitive adhesive application section 6 on which a pressure-sensitive adhesive is pattern-coated is provided inside the pressure-sensitive adhesive application section 5 (the area surrounded by the pressure-sensitive adhesive application section 5). ing.
Here, the pattern coating is a coating method in which a portion where the adhesive is disposed and a portion where the adhesive is not disposed are mixed, and specific examples include a dot pattern and a stripe pattern (stripe). Pattern), a lattice pattern, a checkerboard pattern, and the like.
Examples of the dot pattern include those in which a large number of adhesive portions each having an independent shape such as a circle, a rhombus, and an ellipse are arranged in a scattered manner in plan view. FIG. 4A shows an absorbent article having a second adhesive application section 6 formed by applying an adhesive in a dot pattern.
As the stripe pattern (striped pattern), a large number of linear adhesive portions are arranged in parallel, as in the adhesive application portion 6 of the present embodiment, and a large number of linear adhesive portions are non-parallel. Examples thereof include those in which a large number of non-linear adhesive portions such as a continuous waveform and a zigzag shape are arranged in parallel or non-parallel. The stripe pattern composed of a large number of parallel linear adhesive portions has an individual adhesive portion that extends in the longitudinal direction of the consumable article 1 and also has an adhesive portion that is inclined with respect to the longitudinal direction (oblique). Stripe).
Examples of the lattice pattern include those in which linear adhesive portions are arranged in a lattice shape, but a plurality of continuous wave-shaped adhesive portions extending in substantially one direction are arranged vertically and horizontally to form a lattice shape. FIG. 4B shows an absorbent article having a second adhesive applied portion 6 formed by applying an adhesive in a checkerboard pattern.
[0015]
In the second pressure-sensitive adhesive application section 6, a portion where the pressure-sensitive adhesive is arranged (also referred to as a pressure-sensitive adhesive disposition portion) and a portion where the pressure-sensitive adhesive is not disposed (also referred to as a pressure-sensitive adhesive non-disposition portion) are mixed. However, from the viewpoint of increasing the fixing stability to the wearer without narrowing the liquid absorption region, the area ratio of the adhesive disposition portion to the entire area of the second adhesive application portion 6 is 10 to 80%, particularly 30 to 50%. It is preferable that In addition, from the same viewpoint, the total area of the adhesive application section 5 and the second adhesive application section 6 is preferably within 80% of the total area of the skin contact surface 4 of the absorbent article 1, and Preferably, the second pressure-sensitive adhesive application section 6 is formed along the inner edge of the pressure-sensitive adhesive application section 5 and immediately inside the same.
[0016]
FIG. 3 shows a state in which the pressure-sensitive adhesive application section 5 and the second pressure-sensitive adhesive application section 6 of the article 1 are covered with an annular release material 7. The coating portions 5 and 6 are distributed with the release material 7 protected. When the articles 1 are individually packaged, the whole or a part of the packaging material may be subjected to a release treatment, and this may be used as a release material.
[0017]
A preferred example of a method for using the women's absorbent article 1 of the present embodiment will be described. First, after holding the article 1 in a hand and peeling off the release sheet, the vicinity of the center in the width direction on the back sheet 31 side is pressed with a finger so that the top sheet 21 side is convex, and the article 1 is bent in the width direction. State. Then, it is inserted into the space between the labia of the wearer while maintaining that state. At the time of insertion, the longitudinal direction of the article 1 is made to coincide with the front-rear direction of the wearer, and the central portion surrounded by the second adhesive application section 6 is positioned at the vaginal opening. In addition, the place (space between labia) where the article 1 is arranged is the same as the place where the absorbent article is described in JP-T-2001-506168.
[0018]
According to the women's absorbent article 1 of the present embodiment, the pressure-sensitive adhesive applied portion 5 provided on the peripheral portion of the skin contact surface 4 functions as a leak-proof portion that does not allow liquid to permeate or at least hardly permeates liquid. The liquid absorbed by the absorption layer 2 or the absorber 22 can be effectively prevented from leaking from the peripheral edge of the absorbent article 1.
In addition, since the adhesive application portion 5 adheres to the wall of the wearer's labia (large labia and / or small labia) and to a portion located between the left and right labia, a shift occurs in the arrangement position during wear. And no dropouts occur. For this reason, contamination of the body and underwear and deterioration of feeling of use are prevented, and stable absorption performance is maintained during wearing.
Furthermore, since the second pressure-sensitive adhesive application section 6 can appropriately adhere to a wearer and absorb liquid, the second pressure-sensitive adhesive application section 6 should be formed inside the pressure-sensitive adhesive application section 5. Thereby, the fixation stability to the wearer can be further improved without narrowing the liquid absorption region.
[0019]
The article can be used alone, or can be used in combination with a conventionally known napkin, panty liner, incontinence pad, or tampon. The effect of the present invention (particularly the effect of not soiling the body and underwear) is particularly remarkable when used alone.
[0020]
The material forming each part of the absorbent article for women 1 of the present embodiment will be described. The top sheet 21, the back sheet 31 and the absorbent body 22 are conventionally used for absorbent articles such as sanitary napkins and panty liners, respectively. Can be used without particular limitation. Further, those described in JP-T-2001-506168 can be used. The absorbent 22 preferably contains a superabsorbent polymer, and the superabsorbent polymer may be present in a form in which the interstices between the fibers of the fiber assembly or between the layers of the fiber assembly having a multilayer structure are retained. No.
[0021]
The present invention is not limited to the above embodiment, and can be appropriately modified without departing from the spirit of the present invention.
For example, the planar shape of the absorbent article may be an oval, an oval, a trapezoid having a rounded corner, a rectangle having a rounded corner, or the like. Further, the adhesive of the adhesive application section 5 and the adhesive of the second adhesive application section 6 may be the same type or different types.
[0022]
【The invention's effect】
The absorbent article for women of the present invention is an absorbent article for women that is used by being inserted into the space between the labia. It is possible to prevent contamination of underwear and the like and deterioration of a feeling of use.
[Brief description of the drawings]
FIG. 1 is a schematic perspective view showing a women's absorbent article as one embodiment of the present invention.
FIG. 2 is a sectional view schematically showing a section taken along line XX of FIG. 1;
FIG. 3 is a plan view showing a state in which the adhesive portion of the female absorbent article of FIG. 1 is covered and protected by a release material.
FIG. 4 is a diagram showing a coating pattern of a pressure-sensitive adhesive according to another embodiment of the present invention.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Absorbent article 2 for women 2 Absorbent layer 21 of liquid retention 21 Surface sheet 22 Absorber 3 Leakproof layer 31 of liquid impermeability Back sheet 4 Skin contact surface 5 Adhesive application part 6 Second adhesive application part 7 Release material

Claims (3)

With a liquid-retaining absorbent layer and a liquid-impermeable leakproof layer, a female absorbent article used by being inserted into the space between the labia,
A feminine absorbent article in which a pressure-sensitive adhesive-applied portion in which a pressure-sensitive adhesive is applied is provided over the entire periphery of the peripheral portion of the skin contact surface of the absorbent layer. The absorbent article for women according to claim 1, wherein a second pressure-sensitive adhesive applied portion on which a pressure-sensitive adhesive is pattern-coated is provided inside the pressure-sensitive adhesive applied portion. The feminine absorbent article according to claim 1 or 2, which is vertically long and flat, has a length of 50 to 110 mm, a width of 30 to 70 mm, and a thickness of 1 to 15 mm.

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