GB781512A - Improvements in or relating to paper composed of fibres of polytetrafluoroethylene and other closely related polymers - Google Patents
Improvements in or relating to paper composed of fibres of polytetrafluoroethylene and other closely related polymersInfo
- Publication number
- GB781512A GB781512A GB8870/55A GB887055A GB781512A GB 781512 A GB781512 A GB 781512A GB 8870/55 A GB8870/55 A GB 8870/55A GB 887055 A GB887055 A GB 887055A GB 781512 A GB781512 A GB 781512A
- Authority
- GB
- United Kingdom
- Prior art keywords
- filaments
- paper
- ptfe
- polytetrafluoroethylene
- fibres
- 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
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H5/00—Special paper or cardboard not otherwise provided for
- D21H5/12—Special paper or cardboard not otherwise provided for characterised by the use of special fibrous materials
- D21H5/20—Special paper or cardboard not otherwise provided for characterised by the use of special fibrous materials of organic non-cellulosic fibres too short for spinning, with or without cellulose fibres
Landscapes
- Laminated Bodies (AREA)
- Paper (AREA)
Abstract
781,512. Paper containing synthetic filaments; laminates. DU PONT DE NEMOURS & CO., E.I. March 25, 1955 [April 27, 1954], No. 8870/55. Classes 96 and 140. Paper is made by felting, e.g. on a papermaking machine, an aqueous pulp having suspended filaments of polymers or telomers or interpolymers of polytetrafluoroethylene (PTFE) and chlorotrifluoroethylene, and optionally, filaments of rock wool, asbestos, or flake mica, a wetting agent, e.g. an alkyl aryl polyethylene glycol, and an anti-foaming agent. The PTFE filaments may be prepared by shredding extruded rod as by rubbing, and may be reduced in a " micropulverizer " hammer mill. The paper thickness may be 0.02 to 0.10 ins. or more or felts about 2 to 2¢ in. thick may be made. It may have air permeability of 5 to 75 cu. ft. at a pressure differential of 0.05 in. of water. It may be sintered at 350‹ to 370‹ C. to improve its strength, or bonded by sintering to an impervious PTFE base, the resulting laminate being suitable for adhering to cloth, metal, or glass by an adhesive applied to its paper surface. Specification 642,269, [Group IV (a)], is referred to.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US781512XA | 1954-04-27 | 1954-04-27 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB781512A true GB781512A (en) | 1957-08-21 |
Family
ID=22142246
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB8870/55A Expired GB781512A (en) | 1954-04-27 | 1955-03-25 | Improvements in or relating to paper composed of fibres of polytetrafluoroethylene and other closely related polymers |
Country Status (3)
Country | Link |
---|---|
DE (1) | DE1014426B (en) |
FR (1) | FR1131961A (en) |
GB (1) | GB781512A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3053762A (en) * | 1959-07-24 | 1962-09-11 | American Mach & Foundry | Filter material |
US3080272A (en) * | 1959-03-12 | 1963-03-05 | Du Pont | Fused homogeneous waterleaf of organic polymer fibrids and inorganic flakes, and process for preparing same |
US5470409A (en) * | 1992-01-16 | 1995-11-28 | E. I. Du Pont De Nemours And Company | Process for making fluoropolymer composites |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1074967B (en) * | 1960-02-04 | Algemene Kunstzijde Linie N. V., Arnheim. (Niederlande) | Process for the production of paper from fibers of linear polycondensation products | |
DE2646332B2 (en) * | 1976-10-14 | 1979-04-12 | Basf Ag, 6700 Ludwigshafen | Process for the production of fibrils from fluorine-containing polymers |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE679334C (en) * | 1936-05-17 | 1939-08-03 | Egon Eloed Dr Ing | Process for the manufacture of tissue paper |
-
1955
- 1955-03-25 GB GB8870/55A patent/GB781512A/en not_active Expired
- 1955-04-06 DE DEP13929A patent/DE1014426B/en active Pending
- 1955-04-26 FR FR1131961D patent/FR1131961A/en not_active Expired
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3080272A (en) * | 1959-03-12 | 1963-03-05 | Du Pont | Fused homogeneous waterleaf of organic polymer fibrids and inorganic flakes, and process for preparing same |
US3053762A (en) * | 1959-07-24 | 1962-09-11 | American Mach & Foundry | Filter material |
US5470409A (en) * | 1992-01-16 | 1995-11-28 | E. I. Du Pont De Nemours And Company | Process for making fluoropolymer composites |
Also Published As
Publication number | Publication date |
---|---|
FR1131961A (en) | 1957-03-04 |
DE1014426B (en) | 1957-08-22 |
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