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Absorbent and absorbent article

An absorber and absorbent technology, which is applied in the direction of absorbent pads, etc., can solve the problems of insufficient absorption performance of the absorber, insufficient diffusion, discomfort, etc., and achieve good wearing feeling, increased absorption, and reduced sticky feeling Effect

Active Publication Date: 2013-08-21
KAO CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] In the absorbent article disclosed in Patent Document 5, when wearing, once a gap is formed between the bent portion between the panels and the skin surface, liquid may leak through the gap.
In addition, there may be cases of discomfort during wearing
In addition, in the absorbent article disclosed in Patent Document 5, since the fixing part is interposed between the middle sheet and the absorbing part and has an interface, diffusion from the middle sheet to the absorber may be hindered by the fixing part and the interface, which may be insufficient. Sufficient situation, the absorption performance of the absorber is not fully exerted

Method used

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  • Absorbent and absorbent article
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  • Absorbent and absorbent article

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0226] The absorber 10 of Example 1 was produced as follows. First of all, for the stack fiber cavity 107 with a depth of 6mm, to obtain Figure 26 Protrusions 108 with a height of 2 mm are configured in the shape shown in . The cross-sectional shape of the protrusion 108 is rectangular. Thereafter, fluff pulp (manufactured by Weyerhaeuser Co., Ltd., trade name NB416) and superabsorbent polymer (manufactured by Nippon Catalyst Co., Ltd., trade name W101) were deposited in the fiber stacking cavity 107 . At this time, the basis weight of the paper in the protruding liquid-absorbing storage part 32 is 200 g / m of pulp. 2 , superabsorbent polymer is 320g / m 2 , the paper weight of the liquid-receiving layer part 31 at the bottom of the concave part 20 is that the pulp is 50g / m 2 , superabsorbent polymer is 50g / m 2 . After stacking, the stacked absorbent body 10 was peeled off from the fiber stacking cavity 107, and pressed at a pressure of 0.025 MPa. The absorber 10 was reve...

Embodiment 2

[0228] The absorber 10 of Example 2 was produced by the same procedure as Example 1 except having set the height of the protrusion part 108 to 2 mm in the central part in the longitudinal direction of the absorber, and 1 mm in the outer part.

Synthetic example 1

[0267] In Synthesis Example 1, first, add Kao Co., Ltd. Sodium polyoxyethylene lauryl ether sulfate (trade name EMAL20C) was prepared at 0.11% [relative to the mass of acrylic acid], and 1600 mL of cyclohexane was added. The mixture was stirred under a nitrogen atmosphere, and the internal temperature was raised to 77°C.

[0268] On the other hand, 80% acrylic acid manufactured by Toagosei Co., Ltd. and ion-exchanged water were added to a 2-L three-necked flask, and 48% aqueous sodium hydroxide solution manufactured by Asahi Glass Co., Ltd. was added dropwise while cooling with ice to obtain a monomer aqueous solution. Sodium acrylate aqueous solution (72% neutralized product, concentration about 48%) 1054g. To this aqueous monomer solution, 0.18 g of N-acylated sodium glutamate (trade name AMISOFT GS-11F) produced by Ajinomoto Co., Ltd. was dissolved in 3 g of ion-exchanged water, stirred for a while, and divided into 264 g (hereinafter referred to as monomer aqueous soluti...

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Abstract

When the absorbent is segmented into three parts longitudinally, the absorbent has a middle first absorbing area, a second absorbing area that is the segment on one side of the first absorbing area, and a third absorbing area that is the segment on the other side of the first absorbing area. Each of the absorbing areas has a liquid-receiving layer that absorbs and diffuses liquid in the planar direction, and multiple protruding liquid absorbing and storing areas disposed on one surface of the liquid-receiving layer that are continuous with the liquid-receiving layer and absorb and store liquid, as well as having sunken groove-shaped crevices on one surface or at opposing positions on both surfaces, with the crevices being disposed between the protruding liquid absorbing and storing areas. The first crevices disposed in the first absorbing area are inside of the outer edges of the first absorbing area in plan view and are disposed in the longitudinal direction. The second and third crevices disposed respectively in the second and third absorbing areas are each disposed in a diagonal direction with respect to the longitudinal direction. The first and second crevices, and the first and third crevices are configured as crevices that are continuous with each other, or the first crevices are separated from the second crevices and the third crevices. The area ratio of the protruding liquid absorbing and storing areas is greater than that of the crevices. The liquid-receiving layer of the bottoms of the crevices is an absorbent of lower basis weight and density than the protruding liquid absorbing and storing areas.

Description

technical field [0001] The present invention relates to absorbent bodies and absorbent articles. Background technique [0002] In absorbent articles such as disposable diapers, improvement of the material and structure of each member can be achieved to improve the function and wearing feeling. Absorbers used in absorbent articles have also been developed to achieve this improvement, and in particular, recently, various proposals have been made that have functionality according to usage conditions and types of articles. [0003] Patent Document 1 discloses an absorbent article in which an absorber composed of a plurality of independent absorbing portions is arranged between a top sheet and a back sheet over a planar direction, An intermediate sheet is arranged between the back sheets. The middle sheet has the function of introducing and diffusing the liquid excreted into the absorbent article, and fixes the absorbent portion via the fixing point. The fixing point is, for e...

Claims

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Application Information

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IPC IPC(8): A61F13/49A61F13/53
Inventor 大西玲子石桥京子辻诚长原进介
Owner KAO CORP
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