JPS5553534A - Method of fabricating sealing material - Google Patents

Method of fabricating sealing material

Info

Publication number
JPS5553534A
JPS5553534A JP12595478A JP12595478A JPS5553534A JP S5553534 A JPS5553534 A JP S5553534A JP 12595478 A JP12595478 A JP 12595478A JP 12595478 A JP12595478 A JP 12595478A JP S5553534 A JPS5553534 A JP S5553534A
Authority
JP
Japan
Prior art keywords
rod
unburnt
give
sealing material
passed
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
JP12595478A
Other languages
Japanese (ja)
Other versions
JPS6117648B2 (en
Inventor
Koichi Okita
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 JP12595478A priority Critical patent/JPS5553534A/en
Publication of JPS5553534A publication Critical patent/JPS5553534A/en
Publication of JPS6117648B2 publication Critical patent/JPS6117648B2/ja
Granted legal-status Critical Current

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
    • B29C55/00—Shaping by stretching, e.g. drawing through a die; Apparatus therefor
    • 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
    • B29C55/22—Shaping by stretching, e.g. drawing through a die; Apparatus therefor of tubes
    • 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
    • B29C55/30—Drawing through a die
    • 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
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2031/00—Other particular articles
    • B29L2031/06—Rods, e.g. connecting rods, rails, stakes

Abstract

PURPOSE:To provide the subject method comprising the steps of : elongating an unburnt polytetrafluoroethylene resin rodsor the like to give a large number of fine bubbles, thereafter heating the same to a specific temperature, passing a draw die to reduce the sectional area thereby to obtain a flange joint sealing meterial of good workability. CONSTITUTION:An unburnt polytetrafluoroethylene resin rod or tube is elongated in the longitudinal direction 300% or more, preferably in the range of from 800- 1500% to give the rod a large number of fine bubbles to form a structure affluent in softness. Then, the rod is passed through a furnace heated to a temperature above 327 deg.C, preferably 400 deg.C, to burn the outer peripheral surface of the rod and to heat the inner part thereof as it is left in an unburnt state. Before the rod is cooled to the room temperature, it is passed through the draw die to reduce the sectional area of the rod or to form a deformed section, whereby to obtain the desired sealing material.
JP12595478A 1978-10-12 1978-10-12 Method of fabricating sealing material Granted JPS5553534A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP12595478A JPS5553534A (en) 1978-10-12 1978-10-12 Method of fabricating sealing material

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12595478A JPS5553534A (en) 1978-10-12 1978-10-12 Method of fabricating sealing material

Publications (2)

Publication Number Publication Date
JPS5553534A true JPS5553534A (en) 1980-04-19
JPS6117648B2 JPS6117648B2 (en) 1986-05-08

Family

ID=14923077

Family Applications (1)

Application Number Title Priority Date Filing Date
JP12595478A Granted JPS5553534A (en) 1978-10-12 1978-10-12 Method of fabricating sealing material

Country Status (1)

Country Link
JP (1) JPS5553534A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0389133U (en) * 1989-12-28 1991-09-11
JP2008273199A (en) * 2007-04-02 2008-11-13 Daikin Ind Ltd Sealing material

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5334868A (en) * 1976-09-13 1978-03-31 Sumitomo Electric Industries Fine porous tube

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5334868A (en) * 1976-09-13 1978-03-31 Sumitomo Electric Industries Fine porous tube

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0389133U (en) * 1989-12-28 1991-09-11
JP2008273199A (en) * 2007-04-02 2008-11-13 Daikin Ind Ltd Sealing material

Also Published As

Publication number Publication date
JPS6117648B2 (en) 1986-05-08

Similar Documents

Publication Publication Date Title
SE8501212D0 (en) SET FOR MANUFACTURE OF PREMIUATED PIPES
DE3678449D1 (en) APPARATUS AND METHOD FOR THE PRODUCTION OF RIB TUBES.
GR3023649T3 (en) Method of forming a headed thermoplastic tube
JPS5553534A (en) Method of fabricating sealing material
FI830158A0 (en) FRAMEWORK FOR FRAMEWORK OF CONTAINERS CONTAINING CONTAINERS
IL58858A0 (en) Method for the production of metallic formed members
SE7909840L (en) PROCEDURE FOR THE MANUFACTURING OF METALLIC FORM
JPS5585623A (en) Continuous over-aging method for continuously hot aluminum dipped steel sheet
JPS55117514A (en) Manufacture of double-ply pipe
GB636910A (en) Improvements in or relating to finned elements for heating or cooling purposes
JPS54110276A (en) Manufacture of highy drawn film and its device
JPS54125518A (en) Membrane expansion structure of low temperature gas tank
JPS57199514A (en) Manufacture of multilayered tube
JPS57159214A (en) Manufacture of pipe by hot extrusion
JPS55141311A (en) Manufacture of laminated metallic pipe
GB758432A (en) A process for the manufacture of tubes of variable thickness, and of tube bends therefrom
JPS55141313A (en) Manufacture of laminated metallic rod
JPS552035A (en) Production of plastic pipe
JPS54159316A (en) Heat treating method for increasing piping strength
SU806439A1 (en) Method of making thermoshrinking tubes
RU2223561C2 (en) Method for manufacturing three-layer tubular fuel elements
JPS5595517A (en) Manufacture of heat contraction tube
JPS5659636A (en) Manufacture of optical fiber
SU833588A1 (en) Method of making quartz capillaries
JPS568219A (en) Method for heating film by heat roll