GB919261A - Self-supporting films or adherent coatings, process for making same, and electrical capacitors made therewith - Google Patents
Self-supporting films or adherent coatings, process for making same, and electrical capacitors made therewithInfo
- Publication number
- GB919261A GB919261A GB685859A GB685859A GB919261A GB 919261 A GB919261 A GB 919261A GB 685859 A GB685859 A GB 685859A GB 685859 A GB685859 A GB 685859A GB 919261 A GB919261 A GB 919261A
- Authority
- GB
- United Kingdom
- Prior art keywords
- belt
- film
- dispersion
- layer
- thickness
- 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
- 239000003990 capacitor Substances 0.000 title abstract 2
- 230000001464 adherent effect Effects 0.000 title 1
- 238000000576 coating method Methods 0.000 title 1
- 238000000034 method Methods 0.000 title 1
- 239000000463 material Substances 0.000 abstract 7
- 239000006185 dispersion Substances 0.000 abstract 4
- -1 polyethylenes Polymers 0.000 abstract 3
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 abstract 2
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 abstract 2
- 238000001704 evaporation Methods 0.000 abstract 2
- 230000008020 evaporation Effects 0.000 abstract 2
- 239000007788 liquid Substances 0.000 abstract 2
- 229920001343 polytetrafluoroethylene Polymers 0.000 abstract 2
- 239000004810 polytetrafluoroethylene Substances 0.000 abstract 2
- 239000004698 Polyethylene Substances 0.000 abstract 1
- 229910000147 aluminium phosphate Inorganic materials 0.000 abstract 1
- 239000007864 aqueous solution Substances 0.000 abstract 1
- 238000009835 boiling Methods 0.000 abstract 1
- 238000001246 colloidal dispersion Methods 0.000 abstract 1
- 238000000151 deposition Methods 0.000 abstract 1
- 238000001035 drying Methods 0.000 abstract 1
- 238000010438 heat treatment Methods 0.000 abstract 1
- 238000004519 manufacturing process Methods 0.000 abstract 1
- 230000003472 neutralizing effect Effects 0.000 abstract 1
- 229920000573 polyethylene Polymers 0.000 abstract 1
- 239000000243 solution Substances 0.000 abstract 1
- 229910001220 stainless steel Inorganic materials 0.000 abstract 1
- 239000010935 stainless steel Substances 0.000 abstract 1
- 229920001169 thermoplastic Polymers 0.000 abstract 1
- 239000004416 thermosoftening plastic Substances 0.000 abstract 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
- H01G13/00—Apparatus specially adapted for manufacturing capacitors; Processes specially adapted for manufacturing capacitors not provided for in groups H01G4/00 - H01G11/00
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D3/00—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials
- B05D3/12—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials by mechanical means
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
- B29D7/00—Producing flat articles, e.g. films or sheets
- B29D7/01—Films or sheets
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Power Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Laminated Bodies (AREA)
Abstract
Self-supporting films less than 0,0025 mm. thick consisting of organic thermoplastic polymeric materials are produced by depositing on a clean surface a thin layer of a colloidal dispersion of the material in a liquid having a boiling point sufficiently low to permit its removal from the surface at a temperature below the fusing temperature of the material and being such that no residue is left after evaporation which will modify the material, removing the liquid from the layer of the dispersion by evaporation, heating the residual material to a temperature within the range 600 DEG to 750 DEG F. to fuse the material into a continuous layer, subjecting the layer to pressure while it is hot to compress it into a non-porous state and a thickness of less than 0,0025 mm., and detaching the layer from the surface. The polymeric materials are preferably the halogenated polyethylenes, such as polytetrafluoroethylene. In an example, a stainless steel endless travelling belt, after being freed from dirt, oxide and oil, thereafter passed through a 2% aqueous solution of phosphoric acid at about 100 DEG F., washed with water and a neutralizing solution, is passed through a 40% aqueous dispersion of polytetrafluoroethylene containing a minor proportion of acetone, the dispersion being maintained at 150 DEG F. and the belt travelling through the dispersion at a rate such that a film 0,0001 inch in thickness is deposited on the belt. The wet belt is then passed first through a drying oven maintained at about 150 DEG F. and then through a finishing oven maintained at about 680 DEG F. The porous film thereby formed on the belt is converted to a non-porous form by passing the coated belt while still at about 680 DEG F. through the nip of a pair of pressure rollers which compress the film to a thickness about one-half of that when it is in the fused state and the film is then cooled, stripped from the belt and wound on a storage roll. Laminates may be produced by leaving the film adhering to a flexible supporting surface (see Group VIII). Films produced in the prescribed manner may be used for the manufacture of electrical capacitors (see Group XXXVI). Reference has been directed by the Comptroller to Specification 850,885.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US71879558A | 1958-03-03 | 1958-03-03 | |
| US71881458A | 1958-03-03 | 1958-03-03 | |
| US71870058A | 1958-03-03 | 1958-03-03 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB919261A true GB919261A (en) | 1963-02-20 |
Family
ID=27418982
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB685859A Expired GB919261A (en) | 1958-03-03 | 1959-02-27 | Self-supporting films or adherent coatings, process for making same, and electrical capacitors made therewith |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB919261A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2242431A (en) * | 1990-03-31 | 1991-10-02 | Gore & Ass | Porous PTFE structures |
| US5677031A (en) * | 1990-03-31 | 1997-10-14 | W. L. Gore & Associates, Inc. | Porous PTFE structures |
| EP2161127A1 (en) * | 2007-06-21 | 2010-03-10 | Nitto Denko Corporation | Roll of porous polytetrafluoroethylene sheet and tape roll |
| WO2012052422A2 (en) * | 2010-10-22 | 2012-04-26 | Oerlikon Textile Gmbh & Co. Kg | Device for producing strand-shaped products |
-
1959
- 1959-02-27 GB GB685859A patent/GB919261A/en not_active Expired
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2242431A (en) * | 1990-03-31 | 1991-10-02 | Gore & Ass | Porous PTFE structures |
| GB2242431B (en) * | 1990-03-31 | 1994-05-11 | Gore & Ass | Porous PTFE structures |
| US5677031A (en) * | 1990-03-31 | 1997-10-14 | W. L. Gore & Associates, Inc. | Porous PTFE structures |
| EP2161127A1 (en) * | 2007-06-21 | 2010-03-10 | Nitto Denko Corporation | Roll of porous polytetrafluoroethylene sheet and tape roll |
| EP2161127A4 (en) * | 2007-06-21 | 2012-03-07 | Nitto Denko Corp | Roll of porous polytetrafluoroethylene sheet and tape roll |
| WO2012052422A2 (en) * | 2010-10-22 | 2012-04-26 | Oerlikon Textile Gmbh & Co. Kg | Device for producing strand-shaped products |
| WO2012052422A3 (en) * | 2010-10-22 | 2012-06-28 | Oerlikon Textile Gmbh & Co. Kg | Device for producing strand-shaped products |
| US9308682B2 (en) | 2010-10-22 | 2016-04-12 | Oerlikon Textile Gmbh & Co., Kg | Device for producing strand-shaped products |
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