JPS5575433A - Polytetrafluoroethylene porous body and preparation thereof - Google Patents

Polytetrafluoroethylene porous body and preparation thereof

Info

Publication number
JPS5575433A
JPS5575433A JP14892878A JP14892878A JPS5575433A JP S5575433 A JPS5575433 A JP S5575433A JP 14892878 A JP14892878 A JP 14892878A JP 14892878 A JP14892878 A JP 14892878A JP S5575433 A JPS5575433 A JP S5575433A
Authority
JP
Japan
Prior art keywords
porous body
property
condition
heat shrinkage
certain portion
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
Application number
JP14892878A
Other languages
Japanese (ja)
Other versions
JPS581656B2 (en
Inventor
Hiroshi Mano
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sumitomo Electric Industries Ltd
Original Assignee
Sumitomo Electric Industries Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Sumitomo Electric Industries Ltd filed Critical Sumitomo Electric Industries Ltd
Priority to JP53148928A priority Critical patent/JPS581656B2/en
Priority to BE0/198073A priority patent/BE879974A/en
Priority to CA000340685A priority patent/CA1147109A/en
Priority to DE2947743A priority patent/DE2947743C2/en
Priority to US06/098,283 priority patent/US4332035A/en
Priority to IT50927/79A priority patent/IT1120048B/en
Priority to AU53273/79A priority patent/AU521190B2/en
Priority to SE7909867A priority patent/SE435151B/en
Priority to GB7941151A priority patent/GB2037294B/en
Priority to NLAANVRAGE7908646,A priority patent/NL179352C/en
Priority to FR7929579A priority patent/FR2442713A1/en
Publication of JPS5575433A publication Critical patent/JPS5575433A/en
Publication of JPS581656B2 publication Critical patent/JPS581656B2/en
Priority to US06/821,528 priority patent/US4713070A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/02—Prostheses implantable into the body
    • A61F2/04—Hollow or tubular parts of organs, e.g. bladders, tracheae, bronchi or bile ducts
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/02—Prostheses implantable into the body
    • A61F2/04—Hollow or tubular parts of organs, e.g. bladders, tracheae, bronchi or bile ducts
    • A61F2/06—Blood vessels
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
    • A61L29/00—Materials for catheters, medical tubing, cannulae, or endoscopes or for coating catheters
    • A61L29/04—Macromolecular materials
    • A61L29/041—Macromolecular materials obtained by reactions only involving carbon-to-carbon unsaturated bonds
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
    • A61L29/00—Materials for catheters, medical tubing, cannulae, or endoscopes or for coating catheters
    • A61L29/14—Materials characterised by their function or physical properties, e.g. lubricating compositions
    • A61L29/146—Porous materials, e.g. foams or sponges
    • 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
    • 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
    • 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
    • B29C48/06—Rod-shaped
    • 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
    • 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
    • B29C48/10—Articles with cross-sections having partially or fully enclosed cavities, e.g. pipes or channels flexible, e.g. blown foils
    • 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. polytetrafluoroethylene, e.g. ePTFE, i.e. expanded polytetrafluoroethylene
    • 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

Landscapes

  • Health & Medical Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Veterinary Medicine (AREA)
  • Public Health (AREA)
  • General Health & Medical Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • Transplantation (AREA)
  • Manufacturing & Machinery (AREA)
  • Epidemiology (AREA)
  • Vascular Medicine (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Biomedical Technology (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Oral & Maxillofacial Surgery (AREA)
  • Mechanical Engineering (AREA)
  • Gastroenterology & Hepatology (AREA)
  • Pulmonology (AREA)
  • Cardiology (AREA)
  • Materials Engineering (AREA)
  • Dispersion Chemistry (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)
  • Prostheses (AREA)
  • Materials For Medical Uses (AREA)

Abstract

PURPOSE: To obtain the title porous body with improved strength property useful for a filter material or the like by a mechanism wherein an unsintered polytetrafluoroethylene porous body produced by a drawing method is heat treated from a certain portion in the condition for preventing heat shrinkage.
CONSTITUTION: An unsintered polytetrafluoroethylene mixture added by a liquid lubricant such as white oil or the like is molded in a desired shape and drawn to at least unidirection to obtain a porous body. Subsequently, the obtained porous body is heated to above 327°C from a certain portion in the condition for preventing heat shrinkage and subijected to a sintering treatment until the orentation of a fine fibrous texture of the said portion becomes larger to the direction vertical against the drawing direction than to the drawing direction. Thereby, the heated surface becomes a net like structure having pore size of aobut few μmWfew mm finally and excellent strength and permeation property are imparted, and an appropriate property as an electrolysis memberane or the like is obtained.
COPYRIGHT: (C)1980,JPO&Japio
JP53148928A 1978-11-30 1978-11-30 Polytetrafluoroethylene porous material and manufacturing method thereof Expired JPS581656B2 (en)

Priority Applications (12)

Application Number Priority Date Filing Date Title
JP53148928A JPS581656B2 (en) 1978-11-30 1978-11-30 Polytetrafluoroethylene porous material and manufacturing method thereof
BE0/198073A BE879974A (en) 1978-11-30 1979-11-12 POROUS POLYTETRAFLUORETHYLENE STRUCTURE AND MANUFACTURING METHOD THEREOF
CA000340685A CA1147109A (en) 1978-11-30 1979-11-27 Porous structure of polytetrafluoroethylene and process for production thereof
DE2947743A DE2947743C2 (en) 1978-11-30 1979-11-27 Uniform, porous tubular structure made of polytetrafluoroethylene
US06/098,283 US4332035A (en) 1978-11-30 1979-11-28 Porous structure of polytetrafluoroethylene and process for production thereof
IT50927/79A IT1120048B (en) 1978-11-30 1979-11-28 POLYTETRAFLUOROETHYLENE POROUS STRUCTURE AND PROCEDURE TO PRODUCE IT
AU53273/79A AU521190B2 (en) 1978-11-30 1979-11-28 Porous structure of polytetrafluoroethylene
SE7909867A SE435151B (en) 1978-11-30 1979-11-29 UNIFORM POROS STRUCTURE OF THE POLYTETRAFLUORETTE, PROCEDURE FOR PREPARING IT AND USING THE POROS STRUCTURE
GB7941151A GB2037294B (en) 1978-11-30 1979-11-29 Porous ptfe structure and process for production thereof
NLAANVRAGE7908646,A NL179352C (en) 1978-11-30 1979-11-29 POROUS TUBULAR PREPARATION OF POLYTETRAFLUORETHYLENE WITH A MICROFIBRE STRUCTURE AND METHOD FOR MANUFACTURING THIS PRODUCT.
FR7929579A FR2442713A1 (en) 1978-11-30 1979-11-30 POROUS POLYTETRAFLUORETHYLENE STRUCTURE AND PROCESS FOR ITS PREPARATION
US06/821,528 US4713070A (en) 1978-11-30 1986-01-24 Porous structure of polytetrafluoroethylene and process for production thereof

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP53148928A JPS581656B2 (en) 1978-11-30 1978-11-30 Polytetrafluoroethylene porous material and manufacturing method thereof

Publications (2)

Publication Number Publication Date
JPS5575433A true JPS5575433A (en) 1980-06-06
JPS581656B2 JPS581656B2 (en) 1983-01-12

Family

ID=15463790

Family Applications (1)

Application Number Title Priority Date Filing Date
JP53148928A Expired JPS581656B2 (en) 1978-11-30 1978-11-30 Polytetrafluoroethylene porous material and manufacturing method thereof

Country Status (2)

Country Link
JP (1) JPS581656B2 (en)
BE (1) BE879974A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6133609U (en) * 1984-07-31 1986-02-28 ジヤパンゴアテツクス株式会社 Pipe filter member

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS467284A (en) * 1970-05-21 1971-12-20

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS467284A (en) * 1970-05-21 1971-12-20

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6133609U (en) * 1984-07-31 1986-02-28 ジヤパンゴアテツクス株式会社 Pipe filter member

Also Published As

Publication number Publication date
BE879974A (en) 1980-03-03
JPS581656B2 (en) 1983-01-12

Similar Documents

Publication Publication Date Title
JPS56159128A (en) Thermoplastic resin porous film and production thereof
DE69304906D1 (en) METHOD FOR PRODUCING POROUS CROSSLINKED POLYMER WITH LOW DENSITY
ATE138960T1 (en) METHOD FOR PRODUCING FINE PARTICLE ORGANOPOLYSILOXANE EMULSIONS
CA2054086A1 (en) Low hydrohead fibrous porous web with improved retentive wettability
DE68908994D1 (en) Process for producing porous carbon material and the material thus produced.
JPS5690838A (en) Production of composite membrane by utilizing plasma irradiation
JPS5611931A (en) Porous membrane of polyvinyl alcohol
KR830007951A (en) Nonwoven Seed Material Impregnated with Resin, Products Made Therefrom, and Methods for Making the Same
JPS56110749A (en) Preparation of sintered product with permanently hydrophilic nature
JPS54126268A (en) Manufacturing of porous sheet having excellent resistance to deterioration
JPS55142625A (en) Manufacturing of porous sheet material
JPS5486573A (en) Production of porous polytetrafluoroethylene article
JPS5311183A (en) Treating material for emulsifiable compounds
JPS53134871A (en) Hydrophilic and porous composite structure and its production
JPS57117317A (en) Synthetic fiber filter
JPS5528715A (en) Dehydration method of digested sludge
SU1153001A1 (en) Method of constructing a counter-seepage curtain
JPS55111842A (en) Filter aid of adsorptive cellulose
JPS53117860A (en) Method of producing filter
JPS55132605A (en) Preparation of semi-permeable membrane
JPS57179246A (en) Surface modification of polymeric material with graft copolymer
Omori EFFECTS OF CAF 2 ADDITION ON HOT-PRESSING OF CAO
Betekhtin et al. Microvoid Healing Under Hydrostatic Pressure and Strengthening of Metals
DE1273141B (en) Method and device for the production of materials and molded bodies from metal fibers
JPS5716105A (en) Sintered ring for spinner