GB1029511A - Improvements relating to porous sheet material - Google Patents
Improvements relating to porous sheet materialInfo
- Publication number
- GB1029511A GB1029511A GB426064A GB426064A GB1029511A GB 1029511 A GB1029511 A GB 1029511A GB 426064 A GB426064 A GB 426064A GB 426064 A GB426064 A GB 426064A GB 1029511 A GB1029511 A GB 1029511A
- Authority
- GB
- United Kingdom
- Prior art keywords
- woven
- powder
- leachable
- thermoplastic resin
- sodium
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
- C08J9/26—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof by elimination of a solid phase from a macromolecular composition or article, e.g. leaching out
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)
Abstract
Porous sheet material is made by melt-coating a free-flowing powder composition of a thermoplastic resin and a leachable powder with or without other constituents onto a porous carrier web, the leachable powder thereafter being leached out, and constituting 45-75% of the total composition by weight and being infusible at the melt-coating temperature. The carrier web may be a woven, non-woven or laminated woven and non-woven, material and may be impregnated with a polyvinyl chloride composition. The preferred thermoplastic resin is polyvinyl chloride or a copolymer of vinyl acetate. The preferred amount of leachable powder is 50-65% by weight. The powder particles should be between 50 and 240 B.S.S. mesh, preferably between 120 and 200 B.S.S. mesh. Another thermoplastic resin, for example, polyurethane elastomer, may be included to improve the abrasion resistance of the product. The leachable material may be sodium chloride, sodium carbonate, a surface active agent or dispersing agent such as sodium salt of an aromatic sulphonic acid, or hydrolysed starch. A small amount of a blowing agent, such as sodium bicarbonate, may be added. Plasticizers, stabilizers, pigments and any other desired additives may also be incorporated.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB426064A GB1029511A (en) | 1964-01-31 | 1964-01-31 | Improvements relating to porous sheet material |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB426064A GB1029511A (en) | 1964-01-31 | 1964-01-31 | Improvements relating to porous sheet material |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1029511A true GB1029511A (en) | 1966-05-11 |
Family
ID=9773764
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB426064A Expired GB1029511A (en) | 1964-01-31 | 1964-01-31 | Improvements relating to porous sheet material |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB1029511A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2530189A1 (en) * | 1982-07-16 | 1984-01-20 | Fujikura Rubber Ltd | METHOD FOR MANUFACTURING COMPRESSIBLE LAYER AND WHITENER FOR PRINTING OPERATIONS |
EP0814521A2 (en) * | 1996-06-17 | 1997-12-29 | Dai Nippon Printing Co., Ltd. | Process for producing porous coating layer, electrode plate for secondary battery with nonaqueous electrolyte, process for producing same and sheet for peeling active material layer |
-
1964
- 1964-01-31 GB GB426064A patent/GB1029511A/en not_active Expired
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2530189A1 (en) * | 1982-07-16 | 1984-01-20 | Fujikura Rubber Ltd | METHOD FOR MANUFACTURING COMPRESSIBLE LAYER AND WHITENER FOR PRINTING OPERATIONS |
GB2125315A (en) * | 1982-07-16 | 1984-03-07 | Fujikura Rubber Ltd | Method of producing a compressible layer and of producing a blanket for use in printing |
EP0814521A2 (en) * | 1996-06-17 | 1997-12-29 | Dai Nippon Printing Co., Ltd. | Process for producing porous coating layer, electrode plate for secondary battery with nonaqueous electrolyte, process for producing same and sheet for peeling active material layer |
EP0814521A3 (en) * | 1996-06-17 | 1999-03-03 | Dai Nippon Printing Co., Ltd. | Process for producing porous coating layer, electrode plate for secondary battery with nonaqueous electrolyte, process for producing same and sheet for peeling active material layer |
US6162264A (en) * | 1996-06-17 | 2000-12-19 | Dai Nippon Printing Co., Ltd. | Process for producing porous coating layer electrode plate for secondary battery with nonaqueous electrolyte process for producing same and sheet for peeling active material layer |
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