KR930002425A - 폴리테트라플루오로에틸렌 다공성 필름 및 그의 제조방법 및 용도 - Google Patents
폴리테트라플루오로에틸렌 다공성 필름 및 그의 제조방법 및 용도 Download PDFInfo
- Publication number
- KR930002425A KR930002425A KR1019920013185A KR920013185A KR930002425A KR 930002425 A KR930002425 A KR 930002425A KR 1019920013185 A KR1019920013185 A KR 1019920013185A KR 920013185 A KR920013185 A KR 920013185A KR 930002425 A KR930002425 A KR 930002425A
- Authority
- KR
- South Korea
- Prior art keywords
- polytetrafluoroethylene
- porous film
- film
- sintered
- semi
- Prior art date
Links
- 229920001343 polytetrafluoroethylene Polymers 0.000 title claims description 19
- 239000004810 polytetrafluoroethylene Substances 0.000 title claims description 19
- -1 Polytetrafluoroethylene Polymers 0.000 title claims 16
- 238000002360 preparation method Methods 0.000 title 1
- 239000000463 material Substances 0.000 claims description 7
- 238000002844 melting Methods 0.000 claims description 5
- 230000008018 melting Effects 0.000 claims description 5
- 239000011148 porous material Substances 0.000 claims 4
- 239000000853 adhesive Substances 0.000 claims 2
- 230000001070 adhesive effect Effects 0.000 claims 2
- 238000009998 heat setting Methods 0.000 claims 2
- 238000004519 manufacturing process Methods 0.000 claims 2
- 239000012779 reinforcing material Substances 0.000 claims 2
- 238000010438 heat treatment Methods 0.000 claims 1
- 238000000034 method Methods 0.000 claims 1
- 238000001878 scanning electron micrograph Methods 0.000 claims 1
- 239000013078 crystal Substances 0.000 description 2
Classifications
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- 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
- C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
- C08J5/18—Manufacture of films or sheets
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D39/00—Filtering material for liquid or gaseous fluids
- B01D39/14—Other self-supporting filtering material ; Other filtering material
- B01D39/16—Other self-supporting filtering material ; Other filtering material of organic material, e.g. synthetic fibres
- B01D39/1692—Other shaped material, e.g. perforated or porous sheets
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D67/00—Processes specially adapted for manufacturing semi-permeable membranes for separation processes or apparatus
- B01D67/0002—Organic membrane manufacture
- B01D67/0023—Organic membrane manufacture by inducing porosity into non porous precursor membranes
- B01D67/0025—Organic membrane manufacture by inducing porosity into non porous precursor membranes by mechanical treatment, e.g. pore-stretching
- B01D67/0027—Organic membrane manufacture by inducing porosity into non porous precursor membranes by mechanical treatment, e.g. pore-stretching by stretching
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D69/00—Semi-permeable membranes for separation processes or apparatus characterised by their form, structure or properties; Manufacturing processes specially adapted therefor
- B01D69/10—Supported membranes; Membrane supports
- B01D69/107—Organic support material
- B01D69/1071—Woven, non-woven or net mesh
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D71/00—Semi-permeable membranes for separation processes or apparatus characterised by the material; Manufacturing processes specially adapted therefor
- B01D71/06—Organic material
- B01D71/30—Polyalkenyl halides
- B01D71/32—Polyalkenyl halides containing fluorine atoms
- B01D71/36—Polytetrafluoroethene
-
- 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
- B29C55/00—Shaping by stretching, e.g. drawing through a die; Apparatus therefor
- B29C55/005—Shaping by stretching, e.g. drawing through a die; Apparatus therefor characterised by the choice of materials
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2323/00—Details relating to membrane preparation
- B01D2323/08—Specific temperatures applied
- B01D2323/081—Heating
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2325/00—Details relating to properties of membranes
- B01D2325/02—Details relating to pores or porosity of the membranes
- B01D2325/0281—Fibril, or microfibril structures
-
- 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
- B29K2105/04—Condition, form or state of moulded material or of the material to be shaped cellular or porous
-
- 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
- C08J2327/00—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Derivatives of such polymers
- C08J2327/02—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Derivatives of such polymers not modified by chemical after-treatment
- C08J2327/12—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Derivatives of such polymers not modified by chemical after-treatment containing fluorine atoms
- C08J2327/18—Homopolymers or copolymers of tetrafluoroethylene
-
- 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
- Y10S264/00—Plastic and nonmetallic article shaping or treating: processes
- Y10S264/73—Processes of stretching
-
- 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
- Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
- Y10T428/24273—Structurally defined web or sheet [e.g., overall dimension, etc.] including aperture
-
- 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
- Y10T428/249921—Web or sheet containing structurally defined element or component
- Y10T428/249953—Composite having voids in a component [e.g., porous, cellular, etc.]
- Y10T428/249978—Voids specified as micro
-
- 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
- Y10T428/249921—Web or sheet containing structurally defined element or component
- Y10T428/249953—Composite having voids in a component [e.g., porous, cellular, etc.]
- Y10T428/249978—Voids specified as micro
- Y10T428/249979—Specified thickness of void-containing component [absolute or relative] or numerical cell dimension
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Medicinal Chemistry (AREA)
- Health & Medical Sciences (AREA)
- Materials Engineering (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Mechanical Engineering (AREA)
- Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)
- Separation Using Semi-Permeable Membranes (AREA)
- Filtering Materials (AREA)
- Laminated Bodies (AREA)
Abstract
내용 없음.
Description
본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음
제1도는 실시예에서 사용된 연신 기구를 개략적으로 나타낸다,
제2도는 비소결(unsintered)PTFE 물질 및 소결(sintered)PTFE물질의 결정 용융 곡선을 나타낸다,
제3도는 반소결(semisintered)PTFE 물질의 결정 용융 곡선을 나타낸다.
Claims (9)
- 반소결 폴리테트라플루오로에틸렌 물질을 연신하고 연신된 물질을 소결 폴리테트라플루오로에틸렌의 융점 보다 높은 온도에서 가열하고 제조되고, 주사 전자현미경 사진의 상 프로세싱에 의해 측정되는 99 : 1 내지 75 : 25의 피브릴 대 노드의 면적 비율, 0.05 내지 02㎛의 평균 피브릴 직경 및 2㎛2이하의 최대 노드 면적, 및 0.2내지 0.5㎛의 평균 기공 크기를 갖는 폴리테트라플루오로에틸렌 다공성 필름의 제조방법.
- 평균 기공 크기가 0.2 내지 0.5㎛이고, 공기가 5.3㎝/초의 유속으로 통과할때 압력 손실이 10 내지 100㎜H2O인 폴리테트라플루오로에틸렌 다공성 필름.
- 제1항에 있어서, 적어도 한 표면에 올레핀계 다공성 물질 필름 및 플루오로레진 다공성 필름으로 구성된 군으로부터 선택된 보강물질 필름이 접착제를 사용하거나 사용하지 않고 적층되는 폴리테트라플루오로에틸렌 다공성 필름.
- 반소결 폴리테트라플루오로에틸렌 물질을 적어도 50의 면적 연신 비율로 이축 방향으로 연신하고 연신된 필름을 소결 폴리테트라플루오로에틸렌의 융점보다 높은 온도에서 열고정함으로써 제조된 폴리테트라플루오로에틸렌 다공성 필름.
- 제4항에 있 어서, 적어도 한 표면에 올레핀계 다공성 물질 필름 및 플루오로레진 다공성 필름으로 구성된 군으로부터 선택된 보강물질 필름이 접착제를 사용하거나 사용하지 않고 적층되는 폴리테트라플루오로에틸렌 다공성 필름.
- 반소결 폴리테트라플루오로에틸렌을 적어도 50의 면적 연신 비율로 이축방향으로 연신하고 연신된 필름을 폴리테트라플루오로에틸렌의 융점보다 높은 온도에서 열고정시키는 단계로 구성됨을 특징으로 하는 제1항에 따른 폴리테트라플루오로에틸렌 다공성 필름의 제조방법.
- 제6항에 있어서, 제조된 다공성 필름의 두께가 반소결 폴리테트라플루오로에틸렌 물질 두께의 약 20분의 1이하인 방법.
- 제1항에 있어서, 폴리테트라플루오로에틸렌 다공성 필름을 포함하는 공기 여과기.
- 제4항에 있어서, 폴리테트라플루오로에틸렌 다공성 필름을 포함하는 공기 여과기.※ 참고사항 : 최초출원 내용에 의하여 공개되는 것임.
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1019990035873A KR100260966B1 (en) | 1991-07-23 | 1999-08-27 | Reinforcing material for filtering material of filter |
KR1019990035874A KR100260967B1 (ko) | 1991-07-23 | 1999-08-27 | 폴리테트라플루오로에틸렌 다공성 필름을 포함하는 공기 여과기 |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP18236491 | 1991-07-23 | ||
JP91-182364 | 1991-07-23 |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
KR1019990035874A Division KR100260967B1 (ko) | 1991-07-23 | 1999-08-27 | 폴리테트라플루오로에틸렌 다공성 필름을 포함하는 공기 여과기 |
Publications (2)
Publication Number | Publication Date |
---|---|
KR930002425A true KR930002425A (ko) | 1993-02-23 |
KR100258485B1 KR100258485B1 (ko) | 2000-06-15 |
Family
ID=16117024
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
KR1019920013185A KR100258485B1 (ko) | 1991-07-23 | 1992-07-23 | 폴리테트라플루오로에틸렌 다공성 필름 |
Country Status (8)
Country | Link |
---|---|
US (1) | US5234739A (ko) |
EP (2) | EP0525630B1 (ko) |
KR (1) | KR100258485B1 (ko) |
CN (1) | CN1033428C (ko) |
CA (1) | CA2074349C (ko) |
DE (2) | DE69208552T2 (ko) |
ES (2) | ES2126672T3 (ko) |
RU (1) | RU2103283C1 (ko) |
Families Citing this family (90)
Publication number | Priority date | Publication date | Assignee | Title |
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WO1993013849A1 (en) * | 1992-01-14 | 1993-07-22 | Daikin Industries, Ltd. | Filter and filter element |
RU2124986C1 (ru) * | 1993-01-25 | 1999-01-20 | Дайкин Индастриз Лтд. | Пористая политетрафторэтиленовая пленка и способ ее получения |
US6355135B1 (en) | 1993-01-25 | 2002-03-12 | Daikin Industries, Ltd. | Method of laminating gas permeable sheet material |
GB9325567D0 (en) * | 1993-12-14 | 1994-02-16 | Gore W L & Ass Uk | Fibrillated ptfe surface |
JPH07196831A (ja) * | 1993-12-28 | 1995-08-01 | Japan Gore Tex Inc | ポリテトラフルオロエチレン多孔膜とその製造方法 |
US5657065A (en) * | 1994-01-03 | 1997-08-12 | Xerox Corporation | Porous medium for ink delivery systems |
US6133165A (en) * | 1994-06-30 | 2000-10-17 | Daikin Industries, Ltd. | Bulky polytetrafluoroethylene filament and split yarn, method of producting thereof, method of producing cotton-like materials by using said filament or split yarn and filter cloth for dust collection |
US5507847A (en) * | 1994-07-29 | 1996-04-16 | W. L. Gore & Associates, Inc. | ULPA filter |
WO1996006018A1 (en) * | 1994-08-19 | 1996-02-29 | W. L. Gore & Associates, Inc. | Vented vial for freeze-drying and method of minimizing contamination of freeze-dried products |
JP3486905B2 (ja) * | 1994-10-04 | 2004-01-13 | ダイキン工業株式会社 | 混合綿状物、それからえられる不織布ならびにそれらの製法 |
US5478372A (en) * | 1995-02-08 | 1995-12-26 | W. L. Gore & Associates, Inc. | High temperature, chemical resistant laminate for filtration systems |
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US5476589A (en) * | 1995-03-10 | 1995-12-19 | W. L. Gore & Associates, Inc. | Porpous PTFE film and a manufacturing method therefor |
US5552100A (en) * | 1995-05-02 | 1996-09-03 | Baxter International Inc. | Method for manufacturing porous fluoropolymer films |
US6143675A (en) * | 1995-06-07 | 2000-11-07 | W. L. Gore & Associates (Uk) Ltd. | Porous composite |
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TW438678B (en) | 1996-08-09 | 2001-06-07 | Daikin Ind Ltd | Fire-retardant filter medium and air filter unit using the same |
US5981614A (en) * | 1996-09-13 | 1999-11-09 | Adiletta; Joseph G. | Hydrophobic-oleophobic fluoropolymer compositions |
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TW371284B (en) | 1996-12-04 | 1999-10-01 | Daikin Ind Ltd | Filtration material of filter and air cleaning device using the filtration material |
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JPH11137931A (ja) * | 1997-09-02 | 1999-05-25 | Nitto Denko Corp | エアフィルタ及びその製造方法 |
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US6342294B1 (en) * | 1999-08-12 | 2002-01-29 | Bruce G. Ruefer | Composite PTFE article and method of manufacture |
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-
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- 1992-07-21 CA CA002074349A patent/CA2074349C/en not_active Expired - Fee Related
- 1992-07-22 US US07/916,618 patent/US5234739A/en not_active Expired - Lifetime
- 1992-07-22 RU SU5052430A patent/RU2103283C1/ru not_active IP Right Cessation
- 1992-07-23 ES ES94107246T patent/ES2126672T3/es not_active Expired - Lifetime
- 1992-07-23 KR KR1019920013185A patent/KR100258485B1/ko not_active IP Right Cessation
- 1992-07-23 DE DE69208552T patent/DE69208552T2/de not_active Expired - Fee Related
- 1992-07-23 ES ES92112569T patent/ES2086591T3/es not_active Expired - Lifetime
- 1992-07-23 CN CN92108754A patent/CN1033428C/zh not_active Expired - Lifetime
- 1992-07-23 DE DE69228002T patent/DE69228002T2/de not_active Expired - Fee Related
- 1992-07-23 EP EP92112569A patent/EP0525630B1/en not_active Expired - Lifetime
- 1992-07-23 EP EP94107246A patent/EP0611790B1/en not_active Expired - Lifetime
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---|---|
EP0525630B1 (en) | 1996-02-28 |
DE69228002T2 (de) | 1999-06-10 |
CA2074349A1 (en) | 1993-01-24 |
EP0525630A3 (en) | 1993-03-17 |
EP0611790A3 (en) | 1994-09-28 |
CN1033428C (zh) | 1996-12-04 |
EP0611790B1 (en) | 1998-12-23 |
RU2103283C1 (ru) | 1998-01-27 |
CN1072351A (zh) | 1993-05-26 |
CA2074349C (en) | 2004-04-20 |
DE69208552D1 (de) | 1996-04-04 |
US5234739A (en) | 1993-08-10 |
KR100258485B1 (ko) | 2000-06-15 |
DE69208552T2 (de) | 1996-09-05 |
EP0525630A2 (en) | 1993-02-03 |
ES2086591T3 (es) | 1996-07-01 |
EP0611790A2 (en) | 1994-08-24 |
ES2126672T3 (es) | 1999-04-01 |
DE69228002D1 (de) | 1999-02-04 |
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