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Process for preparing super absorbent-containing composites

A super-absorbent, composite material technology, applied in the direction of granulating raw materials, absorbent pads, chemical instruments and methods, etc., can solve problems such as expensive, weak ability to absorb simple fluids, etc.

Inactive Publication Date: 2002-06-05
KIMBERLY-CLARK WORLDWIDE INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Unfortunately, any improvement in the ability of this specially designed superabsorbent material to absorb complex fluids is often offset by a decrease in its ability to absorb simple fluids
In addition, such specially designed superabsorbent materials are relatively expensive compared to the cost of mass producing superabsorbent materials developed primarily for absorbing simple fluids such as urine

Method used

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  • Process for preparing super absorbent-containing composites
  • Process for preparing super absorbent-containing composites
  • Process for preparing super absorbent-containing composites

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0173] The superabsorbent used in this example was Favor SXM 880, a polyacrylate superabsorbent sold by Stockhausen Corporation (Greensboro, NC USA). The coating material for this example was Avicel 101, a microcrystalline cellulose powder sold by FMC Corporation (Philadelphia, PA USA). The superabsorbent-containing composite of this example, Favor SXM 880 coated with Avicel 101, was prepared at The Coating Place, Verona, WI USA, using an embodiment of the method disclosed herein. The binding agent used was distilled water. The superabsorbent material, coating material and binder are added in equal parts by weight. The process is to add one part of Avicel 101 to the fluid bed coating unit. When the Avicel 101 was fluidized, one part distilled water was added to the process. One part of Favor SXM880 was added to the process after the addition of distilled water. Fluidization was continued while the temperature was raised. When the outlet air temperature was approximately e...

example 2

[0179] This example demonstrates that the invention is not limited to a single superabsorbent or single method, the superabsorbent material used in this example is DRYTECH  2035, which is a superabsorbent material sold by Dow Chemical Company (Midland, MI USA). The coating material of this example is Avicel 101, which is a microcrystalline cellulose powder sold by FMC Corporation (Philadelphia, PA USA). DRYTECH  The superabsorbent-containing composite of this example covered with 2035 Avicel 101 was prepared at The Coating Place, Verona, WI USA using one embodiment of the method disclosed herein. The binding agent used was distilled water. The added superabsorbent material, coating material and binding agent have a weight ratio of about 1:1:2. The process provided adds one portion of Avicel 101 to the fluid bed coating unit. While the Avicel 101 is being fluidized, take one serving of DRYTECH  2035 added to the craft. Added DRYTECH  After 2035, add two parts distill...

example 3

[0185] This example illustrates that the invention is not limited to the choice of a single cellulose powder or a single process. The superabsorbent used in this example was Favor SXM 880, a polyacrylate superabsorbent sold by Stockhausen (Greensboro, NC USA). The coating material for this example was Sanacel 150, a cellulose powder sold by Cellulose Filler Works (Chesterton, MD USA). The superabsorbent-containing composite of this example, Favor SXM880 overlaid with Sanacel 150, was prepared at The Coating Place, Verona, WI USA, using an embodiment of the process disclosed herein. The binding agent used was distilled water. The added superabsorbent material, coating material and binding agent have a weight ratio of 2:1:1. The process is to add one part of Sanacel 150 to the fluid bed coating unit. When one part Sanacel 150 is fluidized, one part distilled water is added to the process. After the addition of distilled water, two parts of Favor SXM 880 were added to the pro...

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Abstract

Superabsorbent-containing composites prepared in a fluidized bed coating apparatus according to the process of the present invention contain at least one particle of a superabsorbent material covered with at least a first layer of at least one particle of at least one coating material. The superabsorbent-containing composites prepared in a fluidized bed coating apparatus according to the process of the present invention are particularly suitable for use in sanitary napkins, diapers and other disposable absorbent articles that handle complex fluids.

Description

Background of the invention [0001] The present invention relates to a method of preparing superabsorbent-containing composite materials having improved efficacy in handling complex fluids. More particularly, the invention relates to the preparation of superabsorbent-containing composite materials capable of selectively removing at least a portion of at least one specific component of a complex fluid. [0002] Superabsorbent materials have a variety of properties that make them attractive for many different uses. Due to their superior water absorption properties, superabsorbent materials have replaced most of the traditional absorbents in disposable diapers and have enabled significant performance improvements in disposable feminine hygiene and adult incontinence products. The water-absorbing fundamental characteristic of superabsorbent material suggests its use in many other uses, including paper towels, medical sponges, meat trays, disposable mats for doorways and bathrooms,...

Claims

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Application Information

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IPC IPC(8): A61F13/15A61L15/60B01J2/00B01J2/16B01J20/32C08J3/12C08J3/20
CPCC08J3/203B01J20/32B01J2/16B01J2/006A61F2013/530744C08J3/12A61F2013/15544A61L15/60C08J2300/14A61F2013/530715B01J20/321B01J20/3236B01J20/3238B01J20/3274B01J20/3289B01J20/3293B01J2220/68C08J3/126
Inventor W·G·雷维斯P·A·汉森H·A·索雷波J·N·林顿W·L·哈米尔顿E·C·达梅
Owner KIMBERLY-CLARK WORLDWIDE INC
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