Highly absorbent composite and method of making the same

a composite and high-absorption technology, applied in the field of new-type absorbent composites, can solve the problems of no successful commercialization examples reported, no effective absorbent products have been developed, and initial absorbing is very fast, so as to achieve high viscosity, improve the effect, and hold stably in a small spa

Inactive Publication Date: 2010-03-11
SUZUKI MIGAKU +2
View PDF11 Cites 81 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0044]The SAP which is used for these purposes should be particles, preferably, fine particles, so that it may be held stably in a small space, and specifically, the diameter of the particles should be 0.4 mm or less, or, more preferably, 0.3 mm to 0.1 mm. Very fine particles, such as those of 0.1 mm diameter, can be coexistent with coarser particles, such as those of 0.4 mm or coarser. In case fiber material such as wood pulp is made to coexist with the SAP, the more the content of the SAP, the better the result: the content of the SAP is preferably 50 percent or higher.
[0045]As discussed in the above, in making the composite absorbent of the present invention, the HFFM, the SAP and, as required, a short-cut staple fiber component are dis...

Problems solved by technology

Thus, the absorbent product does not work as designed.
However, so far, no successfully commercialized examples have been reported because of high costs of raw materials and high capital investments involved.
However, an absorbent product in which the content of the SAP is made high...

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
  • Highly absorbent composite and method of making the same
  • Highly absorbent composite and method of making the same
  • Highly absorbent composite and method of making the same

Examples

Experimental program
Comparison scheme
Effect test

example 1

Preparing the HFFM Dispersion Liquids

[0310]Ethyl alcohol and ion-exchanged water were added to a dispersion liquid of the S-MFC (made by Tokushu Paper Mfg. Co., Ltd.) in gel state of 3.0% water dispersion as a stock liquid, to make three kinds of microfibril dispersion liquid where the ratio of ethyl alcohol / water was 70 / 30 and the concentrations of the S-MFC were 0.25%, 0.5% and 1%, respectively.

Preparing the HFFM / SAP Coexistent Dispersion Liquids

[0311]10 grams of the SAP (made by Sanyo Chemical Industries, Ltd. under the trademark “IM-6700”) passed by 60 to 100 mesh was added to 50 cc of each of the above-mentioned three kinds of the HFFM dispersion liquid to prepare the HFFM / SAP dispersion slurry.

[0312]The prepared dispersion slurry is described as follows:

TABLE 2ExperimentEthylConcentrationS-MFC / SAP ×No.alcohol / waterof S-MFC (%)100 (%)No. 170 / 300.20.1No. 270 / 300.52.5No. 370 / 301.05.0

Forming the HFFM / SAP Composite Sheet Material

[0313]Each of the dispersion liquids while stirred wa...

example 2

Concentration of the HFFM and the Properties of a Composite Sheet Material

[0318]Preparing the HFFM Dispersion Liquid

[0319]Preparing a Bacteria Cellulose (BC) Stock Solution

[0320]BC (made by B.P.R.) where the concentration of solids was 30% was stirred and dissolved in ion-exchanged water by a mixer for approximately 2 hours to prepare a stock solution where the concentration of solids was 1.2%.

Preparing Ethyl Alcohol / Water Dispersion Liquids of BC

[0321]Ethyl alcohol and water were added to a prescribed amount of the stock solution to prepare BC dispersion liquids of 0.02% to 0.80% BC.

Preparing the HFFM / SAP Coexistent Dispersion Liquid

[0322]5 grams of the SAP (made by Sanyo Chemical Industries, Ltd.) was added to 50 cc of each of the dispersion liquids of 0.02% to 0.8% BC to prepare BC / SAP dispersion liquids. In case the concentration of the BC was lower in the dispersion liquid, the SAP settled, but as the concentration of the BC became higher, it became stabilized. By stirring with...

example 3

Continuous Coating Experiments

[0328]A highly absorbent composite was made by using an apparatus as shown in FIG. 61 provided with a coating unit as shown in FIG. 63, using the following materials:

(1) Microfibril: S-MFC (made by Tokushu Paper Mfg. Co., Ltd.)

(2) SAP: 1M-4000 (made by Hoechst-Celanese Co.)

(3) Suspension medium: Acetone / water system

(4) Coating composition:

Component% by weightS-MFC0.4SAP30.0Acetone48.8Water20.8

(5) Supporting sheet: A two-layered through-air thermal bond web non-woven fabric (40 g / cm2, apparent specific density of 0.06) having the following composition was used:

[0329]Upper layer: Mixed web of rayon (4 denier×45 mm length (70%)) and PE / PET (2 denier×45 mm length (30%)), approximately 25 g / cm2

[0330]Lower layer: Single web of PE / PET bicomponent fiber (2 denier×45 mm length), approximately 15 g / cm2.

[0331]A mixture dispersion liquid of the composition in (4) above was continuously applied in approximately 10 mm width at an interval of 5 mm width onto the surf...

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

PropertyMeasurementUnit
Percent by massaaaaaaaaaa
Percent by massaaaaaaaaaa
Fractionaaaaaaaaaa
Login to view more

Abstract

A composite structure mainly composed of hydratable fine fibers in the form of microfibril and a water swellable solid body, the fibers being obtained from cellulose or derivatives thereof, and at least part of the surface of the solid body is covered with the fine fibers. The absorbent composite can be formed in various form of, for example, particle, pellet, sheet and the like, especially of a sheet type with a supporting sheet of a non-woven fabric. The present invention further provides a method of making the composite structure.

Description

[0001]This application is a division of U.S. patent application Ser. No. 09 / 242,482 filed Oct. 22, 1999 entitled “Highly Absorbent Composite Compositions, Absorbent Sheets Provided with the Compositions, and Process for Producing the Same” which is a 371 application of PCT / JP97 / 04606 filed Dec. 15, 1997 which claims priority of Japanese Patent Application Number 333520 / 1996 filed Dec. 13, 1996 and Japanese Patent Application Number 124623 / 1997 filed May 15, 1997 and Japanese Patent Application Number 192159 / 1997 filed Jul. 17, 1997 and Japanese Patent Application Number 213222 / 1997 filed Aug. 7, 1997 and Japanese Patent Application Number 313368 / 1997 filed Nov. 14, 1997 and Japanese Patent Application Number 329830 / 1997 filed Dec. 1, 1997, all the disclosures of which are herein incorporated by reference.BACKGROUND OF THE INVENTION[0002]1. Field of the Invention[0003]The present invention relates to a new type absorbent composite wherein a water swellable solid body, particularly co...

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
IPC IPC(8): B01J20/24A61F13/15A61L15/22C08L1/02A61L15/28A61L15/60B29C70/34D06M15/05
CPCA61F13/53Y10T428/1386A61F2013/530145A61L15/28A61L15/60C08K7/02D06M15/05D06M15/07D06M23/08D06M23/10D06M23/16D21H21/22Y10T428/1348Y10T428/1352Y10T428/139Y10T428/296Y10T428/1314Y10T428/13Y10T428/1393Y10T428/1303Y10T428/1359Y10T428/1362A61F13/5323Y10T428/23993Y10T428/23936Y10T428/23921Y10T428/23929Y10T428/23979A61L15/12
Inventor SUZUKI, MIGAKUMATSUMOTO, RYOICHIMORI, SHINGO
Owner SUZUKI MIGAKU
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap