DE1554842B1 - - Google Patents
Info
- Publication number
- DE1554842B1 DE1554842B1 DE1965P0037356 DEP0037356A DE1554842B1 DE 1554842 B1 DE1554842 B1 DE 1554842B1 DE 1965P0037356 DE1965P0037356 DE 1965P0037356 DE P0037356 A DEP0037356 A DE P0037356A DE 1554842 B1 DE1554842 B1 DE 1554842B1
- Authority
- DE
- Germany
- Prior art keywords
- extrusion
- polytetrafluoroethylene
- extruded
- preform
- polytetrafluoroethylene powder
- 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.)
- Pending
Links
- 238000001125 extrusion Methods 0.000 claims description 33
- -1 polytetrafluoroethylene Polymers 0.000 claims description 20
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims description 20
- 239000004810 polytetrafluoroethylene Substances 0.000 claims description 20
- 238000000034 method Methods 0.000 claims description 17
- 239000000843 powder Substances 0.000 claims description 17
- 239000000314 lubricant Substances 0.000 claims description 8
- 239000006185 dispersion Substances 0.000 claims description 6
- 239000000203 mixture Substances 0.000 claims description 4
- 230000001112 coagulating effect Effects 0.000 claims description 3
- 229940058401 polytetrafluoroethylene Drugs 0.000 description 17
- 238000010438 heat treatment Methods 0.000 description 7
- 239000002245 particle Substances 0.000 description 5
- 229920000642 polymer Polymers 0.000 description 4
- 238000011156 evaluation Methods 0.000 description 3
- 238000000465 moulding Methods 0.000 description 3
- 239000011347 resin Substances 0.000 description 3
- 229920005989 resin Polymers 0.000 description 3
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 2
- 238000003490 calendering Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000005245 sintering Methods 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- BFKJFAAPBSQJPD-UHFFFAOYSA-N tetrafluoroethene Chemical group FC(F)=C(F)F BFKJFAAPBSQJPD-UHFFFAOYSA-N 0.000 description 2
- 241001076195 Lampsilis ovata Species 0.000 description 1
- 239000012736 aqueous medium Substances 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 206010061592 cardiac fibrillation Diseases 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000015271 coagulation Effects 0.000 description 1
- 238000005345 coagulation Methods 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000002600 fibrillogenic effect Effects 0.000 description 1
- 229930195733 hydrocarbon Natural products 0.000 description 1
- 150000002430 hydrocarbons Chemical class 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- 210000003734 kidney Anatomy 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920005862 polyol Polymers 0.000 description 1
- 150000003077 polyols Chemical class 0.000 description 1
- 229920001169 thermoplastic Polymers 0.000 description 1
- 239000004416 thermosoftening plastic Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B11/00—Making preforms
- B29B11/06—Making preforms by moulding the material
- B29B11/10—Extrusion moulding
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B13/00—Conditioning or physical treatment of the material to be shaped
- B29B13/007—Treatment of sinter powders
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/022—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the choice of material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
- B29C48/05—Filamentary, e.g. strands
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
- B29C48/07—Flat, e.g. panels
- B29C48/08—Flat, e.g. panels flexible, e.g. films
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
- B29C48/09—Articles with cross-sections having partially or fully enclosed cavities, e.g. pipes or channels
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2027/00—Use of polyvinylhalogenides or derivatives thereof as moulding material
- B29K2027/12—Use of polyvinylhalogenides or derivatives thereof as moulding material containing fluorine
- B29K2027/18—PTFE, i.e. polytetrafluorethene, e.g. ePTFE, i.e. expanded polytetrafluorethene
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
- Casting Or Compression Moulding Of Plastics Or The Like (AREA)
- Lubricants (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US386412A US3389201A (en) | 1964-07-30 | 1964-07-30 | Paste extrusion of polytetrafluoroethylene by prebaking of the coagulated dispersionresin |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE1554842B1 true DE1554842B1 (en, 2012) | 1970-11-19 |
Family
ID=23525460
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE1965P0037356 Pending DE1554842B1 (en, 2012) | 1964-07-30 | 1965-07-29 |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US3389201A (en, 2012) |
| JP (1) | JPS5019583B1 (en, 2012) |
| DE (1) | DE1554842B1 (en, 2012) |
| GB (1) | GB1068765A (en, 2012) |
| NL (1) | NL6509845A (en, 2012) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2521738A1 (de) * | 1974-05-16 | 1975-11-27 | Ici Ltd | Tetrafluoraethylenpolymere und verfahren zur herstellung derselben |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4276334A (en) * | 1974-01-31 | 1981-06-30 | General Company Limited | Pressure sensitive recording sheet |
| US6436135B1 (en) | 1974-10-24 | 2002-08-20 | David Goldfarb | Prosthetic vascular graft |
| US5098625A (en) * | 1989-03-14 | 1992-03-24 | Yeu Ming Tai Chemical Industrial Co., Ltd. | Process for forming an expanded porous tetrafluoroethylene polymer |
| US4976904A (en) * | 1989-04-20 | 1990-12-11 | Energy Research Corporation | Method and apparatus for continuous formation of fibrillated polymer binder electrode component |
| WO1995030538A1 (en) | 1994-05-06 | 1995-11-16 | Endomed, Inc. | Radially expandable polytetrafluoroethylene |
| EP1582181A3 (en) * | 1994-06-27 | 2010-04-21 | Bard Peripheral Vascular, Inc. | Radially expandable polytetrafluoroethylene and expandable endovascular stents formed therewith |
| US20050056589A1 (en) * | 2003-09-16 | 2005-03-17 | General Electric Company | Treatment of semi-permeable filtration membranes |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2456621A (en) * | 1946-08-17 | 1948-12-21 | Du Pont | Method of extruding polytetrafluoroethylene and coating articles therewith |
| US2931106A (en) * | 1958-08-14 | 1960-04-05 | Du Pont | Process for the preparation of improved polytetrafluoroethylene extrusion powder |
-
1964
- 1964-07-30 US US386412A patent/US3389201A/en not_active Expired - Lifetime
-
1965
- 1965-07-29 NL NL6509845A patent/NL6509845A/xx unknown
- 1965-07-29 GB GB32459/65A patent/GB1068765A/en not_active Expired
- 1965-07-29 JP JP40045635A patent/JPS5019583B1/ja active Pending
- 1965-07-29 DE DE1965P0037356 patent/DE1554842B1/de active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2521738A1 (de) * | 1974-05-16 | 1975-11-27 | Ici Ltd | Tetrafluoraethylenpolymere und verfahren zur herstellung derselben |
Also Published As
| Publication number | Publication date |
|---|---|
| US3389201A (en) | 1968-06-18 |
| JPS5019583B1 (en, 2012) | 1975-07-08 |
| NL6509845A (en, 2012) | 1966-01-31 |
| GB1068765A (en) | 1967-05-17 |
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