Unlock instant, AI-driven research and patent intelligence for your innovation.

Absorbent articles

An absorbent, article technology, applied in the field of bulky cellulose fibers, to achieve the effects of enhancing confinement capacity, high reabsorption rate, and high absorption rate

Inactive Publication Date: 2004-05-05
KAO CORP
View PDF13 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This is a very serious disadvantage for absorbent articles

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Absorbent articles
  • Absorbent articles
  • Absorbent articles

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0313] Example 1 Preparation of absorbent polymer

[0314] Add 230 ml of cyclohexane and 1.4 g of dehydrated monostearate (provided by Kao Corp., trade name "Rheodol SPS-12"). The resulting mixture was stirred to obtain a homogeneous solution.

[0315] Further, in an Erlenmeyer flask, 30 g of an acrylic acid monomer was neutralized with an aqueous sodium hydroxide solution having a concentration of 13.4 g of sodium hydroxide in 39 g of water. Thereby the monomer concentration was adjusted to 45% (water content: 55%). Then 0.1 g of potassium persulfate was added and dissolved to obtain an aqueous monomer solution.

[0316] Then, under a nitrogen atmosphere, the obtained monomer aqueous solution was added dropwise to the above-mentioned four-necked round flask into which cyclohexane and dehydrated monostearate had been introduced. The temperature of the mixture was raised to 70-75°C, at which point the polymer reaction started.

[0317] Then, the water content in the polyme...

Embodiment 2

[0318] Example 2 Preparation of absorbent polymer

[0319] 40 g of the above-mentioned absorbent polymer (A) and 230 ml of cyclohexane were placed in a 500 ml four-neck round flask. Water was then added to control the water content to 35%, and the temperature of the mixture was raised to 75°C. After the temperature became constant (at 75° C.), ethylene glycol diglyceride was added in a ratio of 2,500 ppm based on the above-mentioned absorbent polymer (A). Then, the resulting mixture was kept at 75°C for 3 hours. Cyclohexane was then removed, and the product was dried at 80-100° C. under reduced pressure, thereby obtaining an absorbent polymer (B).

Embodiment 3

[0320] Example 3 Preparation of absorbent polymer

[0321] A commercially available absorbent polymer (supplied by Nippon Shokubai Co., Ltd. under the trade name "Aquaric CAW-4") was used as the absorbent polymer (C).

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention relates to a crosslinking cellulose fibre and the adsorption papers, adsorption bodies, surface materials and adsorption articles which use the fibre. The adsorption articles comprise liquid permeable surface material, liquid impermeable bottom layer material and liquid retention adsorption body between the liquid permeable surface material and the liquid impermeable bottom layer material; the adsorption body comprises adsorption polymer and cellulose fibre; the centrifugal remaining capacity of the adsorption polymer to normal saline is 30g / g or more by testing after the adsorption polymer adsorbs the normal saline and expands to reach balance; the cellulose fibre is the crosslinking cellulose fibre which is obtained by crosslinking the cellulose fibre in molecules and / or between molecules.

Description

technical field [0001] The present invention relates to bulky cellulose fibers having high liquid absorption performance, absorbent paper, absorbent body, top sheet, and absorbent articles using the cellulose fibers. Background technique [0002] Hitherto, various absorbent articles having improved absorption of body fluids, such as sanitary napkins, have been released, and various improvements have been made. Most of the improvement research so far has been aimed at improving the absorption rate, preventing body fluid from flowing back from the absorbent body to the surface, preventing leakage, and reducing adhesion to the user's body. [0003] For example, with regard to materials for absorbent bodies of sanitary napkins, it has been proposed to use absorbent polymers to absorb and retain body fluids using physiochemical effects, ie, ion osmotic pressure, thereby utilizing physically fine spaces instead of hydrophilic absorbent paper or pulp. spaces) to absorb and retain ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): A61F13/15
CPCA61F13/53743A61F2013/15406A61F2013/15544A61F13/534A61F13/15203A61F13/5376
Inventor 滨岛美次山本耕裕河崎宏典中西稔
Owner KAO CORP