CA2164714A1 - Composite, method and apparatus for making same - Google Patents
Composite, method and apparatus for making sameInfo
- Publication number
- CA2164714A1 CA2164714A1 CA002164714A CA2164714A CA2164714A1 CA 2164714 A1 CA2164714 A1 CA 2164714A1 CA 002164714 A CA002164714 A CA 002164714A CA 2164714 A CA2164714 A CA 2164714A CA 2164714 A1 CA2164714 A1 CA 2164714A1
- Authority
- CA
- Canada
- Prior art keywords
- resin
- ptfe
- compression
- layers
- layer
- 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.)
- Granted
Links
Classifications
-
- 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
- B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
- B29C43/32—Component parts, details or accessories; Auxiliary operations
- B29C43/44—Compression means for making articles of indefinite length
-
- 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
- B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
- B29C43/006—Pressing and sintering powders, granules or fibres
-
- 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
- B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
- B29C43/02—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor of articles of definite length, i.e. discrete articles
- B29C43/14—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor of articles of definite length, i.e. discrete articles in several steps
- B29C43/146—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor of articles of definite length, i.e. discrete articles in several steps for making multilayered articles
-
- 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
- B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
- B29C43/02—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor of articles of definite length, i.e. discrete articles
- B29C43/20—Making multilayered or multicoloured articles
- B29C43/203—Making multilayered articles
-
- 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
- B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
- B29C43/22—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor of articles of indefinite length
- B29C43/228—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor of articles of indefinite length using endless belts feeding the material between non-rotating pressure members, e.g. vibrating pressure members
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B30—PRESSES
- B30B—PRESSES IN GENERAL
- B30B5/00—Presses characterised by the use of pressing means other than those mentioned in the preceding groups
- B30B5/04—Presses characterised by the use of pressing means other than those mentioned in the preceding groups wherein the pressing means is in the form of an endless band
- B30B5/06—Presses characterised by the use of pressing means other than those mentioned in the preceding groups wherein the pressing means is in the form of an endless band co-operating with another endless band
- B30B5/065—Presses characterised by the use of pressing means other than those mentioned in the preceding groups wherein the pressing means is in the form of an endless band co-operating with another endless band using anti-friction means for the pressing band
-
- 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
- B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
- B29C43/02—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor of articles of definite length, i.e. discrete articles
- B29C43/027—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor of articles of definite length, i.e. discrete articles having an axis of symmetry
- B29C2043/029—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor of articles of definite length, i.e. discrete articles having an axis of symmetry using axial compression along a longitudinal axis
-
- 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
- B29C2791/00—Shaping characteristics in general
- B29C2791/001—Shaping in several steps
-
- 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
- B29C67/00—Shaping techniques not covered by groups B29C39/00 - B29C65/00, B29C70/00 or B29C73/00
- B29C67/02—Moulding by agglomerating
- B29C67/04—Sintering
-
- 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
-
- 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
- B29K2105/00—Condition, form or state of moulded material or of the material to be shaped
- B29K2105/06—Condition, form or state of moulded material or of the material to be shaped containing reinforcements, fillers or inserts
- B29K2105/16—Fillers
-
- 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
- B29K2105/00—Condition, form or state of moulded material or of the material to be shaped
- B29K2105/25—Solid
- B29K2105/251—Particles, powder or granules
-
- 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
- B29K2627/00—Use of polyvinylhalogenides or derivatives thereof for preformed parts, e.g. for inserts
- B29K2627/12—Use of polyvinylhalogenides or derivatives thereof for preformed parts, e.g. for inserts containing fluorine
- B29K2627/18—PTFE, i.e. polytetrafluorethene, e.g. ePTFE, i.e. expanded polytetrafluorethene
-
- 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
- B29K2707/00—Use of elements other than metals for preformed parts, e.g. for inserts
- B29K2707/04—Carbon
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S425/00—Plastic article or earthenware shaping or treating: apparatus
- Y10S425/055—Polytetrafluoroethylene, i.e. PTFE
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/31504—Composite [nonstructural laminate]
- Y10T428/3154—Of fluorinated addition polymer from unsaturated monomers
- Y10T428/31544—Addition polymer is perhalogenated
Abstract
Methods of compression molding powdered polytetrafluoro-ethylene (PTFE) resins to produce composite articles having at least two distinct layers of PTFE resin, with each layer containing a different type of PTFE resin, are disclosed. A first layer of resin (100), preferably including a filter, is placed in a compression mold (200) and partially compressed at a relatively low pressure. A second layer of resin (102), preferably virgin (unfilled) resin, is then added to the mold and both layers are simultaneously fully compressed. After compression, the resulting composite preform is preferably sintered and coined to create a finished PTFE material or product. In a preferred embodiment, the partial compression step is performed at pressures of less than 500 psi. It has been found that modified PTFE resins provide improved resistance to cold flow and also provide better blending between filled and unfilled layers.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US08/079,163 | 1993-06-18 | ||
US08/079,163 US5399307A (en) | 1993-06-18 | 1993-06-18 | Methods of compression molding two or more polytetrafluoroethylene resin layers |
PCT/US1994/006759 WO1995000311A1 (en) | 1993-06-18 | 1994-06-15 | Composite, method and apparatus for making same |
Publications (2)
Publication Number | Publication Date |
---|---|
CA2164714A1 true CA2164714A1 (en) | 1995-01-05 |
CA2164714C CA2164714C (en) | 2003-09-23 |
Family
ID=22148828
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CA2164714A Expired - Fee Related CA2164714C (en) | 1993-06-18 | 1994-06-15 | Composite, method and apparatus for making same |
Country Status (6)
Country | Link |
---|---|
US (3) | US5399307A (en) |
EP (1) | EP0706446B1 (en) |
AT (1) | ATE196870T1 (en) |
CA (1) | CA2164714C (en) |
DE (1) | DE69426115T2 (en) |
WO (1) | WO1995000311A1 (en) |
Families Citing this family (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6146923A (en) * | 1993-04-09 | 2000-11-14 | Tadahiro Ohmi | Method of smoothing fluorine-containing resin molded article and smoothed molded article |
AT399507B (en) * | 1993-07-30 | 1995-05-26 | Chemiefaser Lenzing Ag | BICOMPONENT MOLDED BODIES MADE OF POLYTETRAFLUORETHYLENE (PTFE) AND METHOD FOR THE PRODUCTION THEREOF |
US6240968B1 (en) * | 1996-08-14 | 2001-06-05 | Rtc, Inc. | Membranes suitable for medical use |
US5867900A (en) * | 1997-08-26 | 1999-02-09 | Ecowater Systems, Inc. | Plastic coated valve rotor and a method of manufacturing |
WO2003013821A1 (en) * | 2001-08-03 | 2003-02-20 | Coltec Industrial Products Llc | Method of manufacturing a pfte preform compression moulding |
DE10228862B4 (en) * | 2002-06-27 | 2011-08-11 | Lucobit Ag, 50389 | Process for producing a plastic plate and plastic plate |
TW200422289A (en) | 2003-02-18 | 2004-11-01 | Bp Chem Int Ltd | Auto thermal cracking reactor |
RU2460642C1 (en) * | 2011-06-17 | 2012-09-10 | Государственное образовательное учреждение высшего профессионального образования "Пермский государственный технический университет" | Powder compaction device |
US9511523B2 (en) * | 2012-03-28 | 2016-12-06 | Sabic Global Technologies B.V. | Static-dissipative foam extrusion calibration with minimized expansion loss |
RU2614279C1 (en) * | 2015-10-15 | 2017-03-24 | федеральное государственное бюджетное образовательное учреждение высшего образования "Пермский национальный исследовательский политехнический университет" | Powder compaction device |
US20210237315A1 (en) * | 2018-07-20 | 2021-08-05 | Taiyo Packing Co., Ltd. | Molding method for fluororesin molded article, production method for medical diaphragm, and production method for diaphragm for semiconductor |
KR102447825B1 (en) * | 2020-06-09 | 2022-09-27 | 세메스 주식회사 | Heterogeneous composite material and method for producing the same |
WO2022056162A1 (en) | 2020-09-09 | 2022-03-17 | Waukesha Bearings Corporation | Composite structures for reciprocating gas compressor systems |
WO2022056384A1 (en) * | 2020-09-11 | 2022-03-17 | Happe Spine Llc | Method for forming an implantable medical device with varied composition and porosity |
DE102021207511A1 (en) | 2021-07-14 | 2023-01-19 | BRUSS Sealing Systems GmbH | Plastic part and method of manufacture |
Family Cites Families (50)
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GB708049A (en) * | 1950-01-26 | 1954-04-28 | Rolls Royce | Improvements in or relating to articles consisting essentially of a polymer of tetrafluoroethylene and to the manufacture thereof |
BE555621A (en) * | 1953-12-10 | 1900-01-01 | ||
US3629383A (en) * | 1963-10-14 | 1971-12-21 | Yutaka Kometani | Process for making paper and airpervious cardboard or boardlike structures predominantly of polytetrafluoroethylene |
FR1404483A (en) * | 1964-04-17 | 1965-07-02 | Method of manufacturing a dry friction part and product thus obtained | |
US3518723A (en) * | 1967-05-05 | 1970-07-07 | Dreibholz & Co Ltd | Dies for use in manufacturing pellets and to apparatus including such dies |
FR2142784A1 (en) * | 1971-06-25 | 1973-02-02 | Viennot Sa | Ptfe tube - with lining consisting of mixt of ptfe and electrically conducting material |
FI750063A (en) * | 1974-01-23 | 1975-07-24 | Baehre & Greten | |
DE2434210A1 (en) * | 1974-07-16 | 1976-02-05 | Baehre & Greten | WIDE BELT SANDING MACHINE FOR PANELS, IN PARTICULAR WOOD PANELS |
FR2307642A1 (en) * | 1975-04-16 | 1976-11-12 | Ugine Kuhlmann | POLYTETRAFLUORETHYLENE MOLDING PROCESS |
SE415159B (en) * | 1975-07-02 | 1980-09-15 | Baehre & Greten | DISCOVERY FOR POWERABLE ENDLESS STEEL BANDS, WHICH ARE ORGANIZED IN CONTINUOUS WORKING PRESSURES FOR MANUFACTURING CHIP AND / OR FIBER PLATES |
JPS5828107B2 (en) * | 1975-12-15 | 1983-06-14 | 住友電気工業株式会社 | 4. 4. |
SU553115A1 (en) * | 1976-01-07 | 1977-04-05 | Предприятие П/Я А-1619 | Mold for isostatic molding of hollow articles from fluoroplast-4 powder |
US4147824A (en) * | 1976-03-31 | 1979-04-03 | Burkert Gmbh | Multilayer seals and method for their production and joining to seal carriers |
US4177320A (en) * | 1976-12-10 | 1979-12-04 | Daikin Kogyo Co., Ltd. | Article coated with fluorocarbon polymer |
JPS5380466A (en) * | 1976-12-25 | 1978-07-15 | Daikin Ind Ltd | Method of production of extruded form of tetrafluoroethylene resin paste |
JPS5461262A (en) * | 1977-10-25 | 1979-05-17 | Nitto Electric Ind Co Ltd | Production of porous polytetrafluoroethylene article |
DE2854336C2 (en) * | 1978-12-15 | 1982-05-19 | Bison-Werke Bähre & Greten GmbH & Co KG, 3257 Springe | Method for producing chipboard, fiber or the like. -Plates |
FI801487A (en) * | 1979-05-18 | 1980-11-19 | Baehre & Greten | FORMING FOR FRAMSTAELLNING AND TRANSPORTING AV PAO BANBAERARE UTSPRITT BRIKETT SPECIELLT FOR FRAMSTAELLNING AV SPAONPLATTOR |
MX172740B (en) * | 1979-07-12 | 1994-01-10 | Glyco Metall Werke | IMPROVED PROCEDURE FOR MANUFACTURING A BINDING MATERIAL L IN LAYERS lumen with respect to the friction layer. |
DE2937410A1 (en) * | 1979-09-15 | 1981-04-02 | Into Solymar Benalmadena Costa Malaga Kerttula | CONTINUOUSLY WORKING PLATE PRESS |
DE2949908A1 (en) * | 1979-12-12 | 1981-06-19 | Hoechst Ag, 6230 Frankfurt | GIANT POWDER POWDER WITH IMPROVED PROPERTIES BASED ON TETRAFLUORETHYLENE POLYMERS AND METHOD FOR THE PRODUCTION THEREOF |
DE3041377C2 (en) * | 1980-11-03 | 1982-12-30 | Bison-Werke Bähre & Greten GmbH & Co KG, 3257 Springe | Wide belt sander for processing chipboard, fiber, veneer or the like. plates |
FI75301C (en) * | 1980-11-14 | 1988-06-09 | Mets Nv De | Continuously operating pressure. |
DE3107589C2 (en) * | 1981-02-27 | 1986-01-30 | Bison-Werke Bähre & Greten GmbH & Co KG, 3257 Springe | Device for the continuous production of chipboard, fiberboard or similar boards |
US4374791A (en) * | 1981-09-28 | 1983-02-22 | The Upjohn Company | Process for preparing particleboard |
DE3247551C2 (en) * | 1982-12-22 | 1986-12-18 | Bison-Werke Bähre & Greten GmbH & Co KG, 3257 Springe | Plant for the production of chipboard, fiberboard or similar boards |
US4770927A (en) * | 1983-04-13 | 1988-09-13 | Chemical Fabrics Corporation | Reinforced fluoropolymer composite |
DE3316154C2 (en) * | 1983-05-03 | 1986-06-19 | Bison-Werke Bähre & Greten GmbH & Co KG, 3257 Springe | Belt grinder |
EP0128968B1 (en) * | 1983-06-16 | 1986-09-24 | Constructiewerkhuizen De Mets N.V. | Continuously working press |
US4615933A (en) * | 1984-04-06 | 1986-10-07 | Rogers Corporation | Radome structure and method of manufacture thereof |
DE3505374A1 (en) * | 1985-02-16 | 1986-08-28 | Kolbenschmidt AG, 7107 Neckarsulm | SLIDING BEARING MATERIAL |
DE3512633A1 (en) * | 1985-04-06 | 1986-10-09 | Hoechst Ag, 6230 Frankfurt | STABLE, AQUEOUS COLLOIDAL DISPERSIONS OF TYPE TETRAFLUORETHYLENE ETHYLENE COPOLYMERISATS AND METHOD FOR THE PRODUCTION THEREOF |
DE3631561A1 (en) * | 1986-09-17 | 1988-03-31 | Hoechst Ag | SOLUTIONS OF FLUOROPOLYMERS AND THEIR USE |
US5198295A (en) * | 1987-02-17 | 1993-03-30 | Rogers Corporation | Ceramic filled fluoropolymeric composite material |
DE3712634A1 (en) * | 1987-04-14 | 1988-11-03 | Baehre & Greten | CONTINUOUSLY WORKING PRESS |
US4937025A (en) * | 1987-09-30 | 1990-06-26 | Hydra Corporation | Molding apparatus and method |
DE3887669T2 (en) * | 1987-12-04 | 1994-06-23 | Canon Kk | Rotating component for fixing device and fixing device therefor. |
DE3744392A1 (en) * | 1987-12-29 | 1989-07-13 | Hoechst Ag | SOLUTIONS OF COPOLYMERS OF THE TYPE TETRAFLUORETHYLENE / ETHYLENE |
DE3816327A1 (en) * | 1988-05-13 | 1989-11-23 | Hoechst Ag | MOLDED BODY FROM A VINYLIDE FLUORIDE COPOLYMER AND METHOD FOR THE PRODUCTION THEREOF |
US4961891A (en) * | 1988-10-04 | 1990-10-09 | Garlock, Inc. | Method of making high compressibility gasket material |
US4900629A (en) * | 1988-10-04 | 1990-02-13 | Garlock Inc. | High compressibility gasket material |
US5032335A (en) * | 1989-07-12 | 1991-07-16 | Mather Seal Company | Manufacture of sealing elements of composite sintered polymeric material |
JPH078926B2 (en) * | 1989-12-07 | 1995-02-01 | ダイキン工業株式会社 | Method for producing polytetrafluoroethylene multilayer porous membrane |
US5005342A (en) * | 1990-02-13 | 1991-04-09 | Ezra C. Lundahl, Inc. | Crop processor |
US5244618A (en) * | 1990-04-06 | 1993-09-14 | Kemcast Partners-1989 | Process and apparatus for continuous three-dimensional forming of heated thermoplastic materials |
US5167781A (en) * | 1990-04-06 | 1992-12-01 | Kemcast Partners-1989 | Continuous plastics molding process and apparatus |
ATE113242T1 (en) * | 1990-12-21 | 1994-11-15 | Baehre & Greten | CONTINUOUS BELT PRESS. |
WO1994002547A1 (en) * | 1992-07-21 | 1994-02-03 | E.I. Du Pont De Nemours And Company | Polytetrafluoroethylene with improved creep resistance, and preparation thereof |
ATA185093A (en) * | 1993-09-14 | 2000-06-15 | Danubia Petrochem Polymere | DOUBLE BELT PRESS WITH HYDROSTATIC BELT SUPPORT |
US5593776A (en) * | 1994-02-08 | 1997-01-14 | Osaka Gas Company, Limited | Fluororesin composites |
-
1993
- 1993-06-18 US US08/079,163 patent/US5399307A/en not_active Expired - Lifetime
-
1994
- 1994-06-15 AT AT94920218T patent/ATE196870T1/en not_active IP Right Cessation
- 1994-06-15 WO PCT/US1994/006759 patent/WO1995000311A1/en active IP Right Grant
- 1994-06-15 CA CA2164714A patent/CA2164714C/en not_active Expired - Fee Related
- 1994-06-15 DE DE69426115T patent/DE69426115T2/en not_active Expired - Fee Related
- 1994-06-15 EP EP94920218A patent/EP0706446B1/en not_active Expired - Lifetime
- 1994-12-05 US US08/349,392 patent/US5670189A/en not_active Expired - Fee Related
-
1997
- 1997-04-17 US US08/842,844 patent/US5846577A/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
EP0706446B1 (en) | 2000-10-11 |
CA2164714C (en) | 2003-09-23 |
ATE196870T1 (en) | 2000-10-15 |
DE69426115T2 (en) | 2001-06-21 |
WO1995000311A1 (en) | 1995-01-05 |
US5399307A (en) | 1995-03-21 |
EP0706446A1 (en) | 1996-04-17 |
US5846577A (en) | 1998-12-08 |
US5670189A (en) | 1997-09-23 |
DE69426115D1 (en) | 2000-11-16 |
EP0706446A4 (en) | 1997-03-05 |
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