Absorbent article

a technology of absorbent articles and absorbent sheets, applied in the field of absorbent articles, can solve the problems of easy compromise of the adhesion of the bottom-layer composite absorbent sheet to the discharge area, easy kink or wrinkle formation of the bottom-layer composite absorbent sheet, and uncomfortable wearing of articles, etc., to reduce the proliferation of microorganisms, easy to keep, and easy to suppress the occurrence of twisting or wrinkles

Inactive Publication Date: 2006-11-02
UNI CHARM CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0040] When an antimicrobial agent, a deodorant, a fragrance, or other functional agent is included in the bottom absorbent component as well as in the upper absorbent component, it becomes easy to keep microorganisms from proliferating and creating an odor during use. Including the aforementioned functional agent can be effective for minimizing proliferation of microorganisms or odors particularly in the bottom absorbent component that is worn for the longest period of time. A tea leaf extract is included as an example of this type of functional agent.
[0041] It becomes easy to suppress the occurrence of twisting or wrinkling in the bottom absorbent component when the upper absorbent component is peeled off in an absorbent article in which a plurality of ab

Problems solved by technology

Therefore, when the top-layer composite absorbent sheet is used after being placed against the discharge area, there is a tendency for kinks or wrinkles to form in the bottom-layer composite absorbent sheet as a result of body or undergarment movement.
When the bottom-layer composite absorbent sheet is kinked or wrinkled at this time, the adhesion of the bottom-layer composite absorbent sheet to the discharge area is easily compromised.
As a result, the article becomes uncomfortable to wear when the bottom-layer composite absorbent sheet is fitted, and there is also a risk of leakage of blood and the like.
The bottom-layer composite absorbent sheet is therefore likely to be in a crushed state due to the contamination of the top-layer composite absorbent sheet when this top-layer composite absorbent sheet is peeled off.
As a result, the bottom-layer composite absorbent sheet becomes uncomfortable to touch when it is placed against the discharge area of the body, and the ability of the bottom-layer composite absorbent sheet to absorb liquids is diminished.
The top-layer composite absorbent sheet is therefore difficult to peel off when the bottom-layer composite absorbent sheet is fixed to the undergarment.
As a result, there is a risk of the bottom-layer composite absorbent shee

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example 1

(1) EXAMPLE 1

[0155] An absorbent article 1 having a two-layer structure that included a bottom absorbent component 10 and an upper absorbent component 20 was created as shown in FIGS. 2A and 2B.

[0156] The surface sheet 11 of the bottom absorbent component 10 and the surface sheet 21 of the upper absorbent component 20 were both formed from spunlace nonwoven cloth composed of 60% mass of rayon fibers and 40% mass of polyethylene terephthalate fibers. The weight thereof was 35 g / m2. Corrugation was applied to the surface sheet 11 and the surface sheet 21.

[0157] The middle sheet 12 of the bottom absorbent component 10 and the middle sheet 22 of the upper absorbent component 20 were both formed from through-air nonwoven cloth composed of 50% mass of polyethylene fibers and 50% mass of polypropylene fibers. The polyethylene fibers and polypropylene fibers used both had a fineness of 2.2 dtex and a fiber length of 40 mm, and the weight thereof was 25 g / m2. The through-air nonwoven cloth...

example 2

(2) EXAMPLE 2

[0162] An absorbent article having a two-layer structure was created in the same manner as in Example 1.

[0163] The surface sheet 11, middle sheet 12, and article backing sheet 13 of the bottom absorbent component 10 were the same as those used in Example 1.

[0164] The surface sheet 21 of the upper absorbent component 20 was formed from through-air nonwoven cloth composed of 50% mass of polyethylene fibers and 50% mass or polypropylene fibers. The polyethylene fibers and polypropylene fibers that were used both had a fineness of 2.2 dtex and a fiber length of 40 mm, and the weight thereof was 25 g / m2. The nonwoven cloth that was used was neither heat-treated for volume recovery nor corrugated.

[0165] An air-laid nonwoven cloth in which pulp was laminated by an air-laying method and the fibers were bonded together by a binder was used as the middle sheet 22 of the upper absorbent component 20. The weight thereof was 35 g / m2. The back surface sheet 23 of the upper absorbe...

example 3

(3) EXAMPLE 3

[0168] An absorbent article 101 having the three-layer structure shown in FIG. 3 was created as in Example 3.

[0169] The surface sheet 111 and middle sheet 112 of the bottom absorbent component 110 were the same as the surface sheet 11 and middle sheet 12 used in Example 1. A laminate of SMS composite nonwoven cloth having a weight of 20 g / m2 and an air-permeable polyethylene film having a basis weight of 20 g / m2 were used as the article backing sheet 113.

[0170] A corrugated spunlace nonwoven cloth composed of 60% mass of cotton fibers and 40% mass of polyethylene terephthalate fibers was used as the middle sheet 122 of the upper absorbent component 120. An air-permeable polyethylene film having a basis weight of 35 g / m2 was used as the back surface sheet 123.

[0171] A non-corrugated spunlace nonwoven cloth having a weight of 35 g / m2 composed solely of cotton fibers was used as the middle sheet 132 of the top absorbent component 130. An air-permeable polyethylene film ...

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PUM

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Abstract

An absorbent article in which a plurality of absorbent components is layered, and the absorbent component on top is peeled off after use. The article is configured to inhibit twisting or wrinkling during use. In the absorbent article, the upper absorbent component is layered on the skin-facing surface of the bottom absorbent component and peelably bonded by the temporal adhesive member. The bottom absorbent component has higher flexural rigidity than the upper absorbent component, and the compression recovery rate of the bottom absorbent component is also set so as to be higher than that of the upper absorbent component. It is thereby possible to prevent the bottom absorbent component from twisting and wrinkling when the upper absorbent component is placed against the discharge area, and after the upper absorbent component is peeled off, the volume of the bottom absorbent component is restored, and comfort during contact thereof with the discharge area is improved.

Description

INCORPORATION BY REFERENCE [0001] This application is based on and claims the benefit of priority from Japanese Patent Application No. 2005-134648, filed on 2 May 2005, the content of which is incorporated herein by reference. BACKGROUND OF THE INVENTION [0002] 1. Field of the Invention [0003] The present invention relates to an absorbent article which is fixed to an undergarment and which absorbs vaginal discharge, menstrual bleeding, urine, or the like, and particularly relates to an absorbent article in which a plurality of absorbent components can be layered and bonded together, the absorbent component on top can be peeled off after use, and the absorbent component under the top component can be used. [0004] 2. Related Art [0005] A composite menstrual sanitary product in which a plurality of composite absorbent sheets is layered so as to be able to peel apart is known as a menstrual sanitary product for absorbing blood that is discharged from a woman's vagina. When this composit...

Claims

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Application Information

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IPC IPC(8): A61F13/15
CPCA61F13/474A61F13/8405A61F2013/8497A61F2013/15406A61F2013/8414A61F2013/15357
Inventor ITO, YUKIHIROSUEKANE, MAKOTOKINOSHITA, MASATAKA
Owner UNI CHARM CORP
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