JPS55142610A - Production of thermal contraction pipe - Google Patents

Production of thermal contraction pipe

Info

Publication number
JPS55142610A
JPS55142610A JP5103379A JP5103379A JPS55142610A JP S55142610 A JPS55142610 A JP S55142610A JP 5103379 A JP5103379 A JP 5103379A JP 5103379 A JP5103379 A JP 5103379A JP S55142610 A JPS55142610 A JP S55142610A
Authority
JP
Japan
Prior art keywords
plastic tube
tube
thermal contraction
heated
core
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
Application number
JP5103379A
Other languages
Japanese (ja)
Inventor
Kosaku Nakano
Masatsugu Ishibashi
Akio Mogi
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.)
Fujikura Ltd
Original Assignee
Fujikura 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 Fujikura Ltd filed Critical Fujikura Ltd
Priority to JP5103379A priority Critical patent/JPS55142610A/en
Publication of JPS55142610A publication Critical patent/JPS55142610A/en
Pending 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
    • B29C61/00—Shaping by liberation of internal stresses; Making preforms having internal stresses; Apparatus therefor
    • B29C61/06—Making preforms having internal stresses, e.g. plastic memory
    • B29C61/08—Making preforms having internal stresses, e.g. plastic memory by stretching 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
    • B29C35/00—Heating, cooling or curing, e.g. crosslinking or vulcanising; Apparatus therefor
    • B29C35/02—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould
    • B29C35/12—Dielectric heating
    • 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
    • B29K2995/00—Properties of moulding materials, reinforcements, fillers, preformed parts or moulds
    • B29K2995/0037—Other properties
    • B29K2995/0049—Heat shrinkable

Landscapes

  • Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Oral & Maxillofacial Surgery (AREA)
  • Thermal Sciences (AREA)
  • Shaping By String And By Release Of Stress In Plastics And The Like (AREA)

Abstract

PURPOSE:To obtain a thermal contraction pipe being excellent in a contractivity, by a method wherein a crosslinked plastic tube is heated by an induction heating and is also expanded by an air pressure. CONSTITUTION:After a core 2 is covered with a tube 1 whose one end is closed with a thermoplastic tube such as crosslinked polyethylene, polyvinyl chloride, etc., an open side of the plastic tube 1 is fastened on a core 2 by a fastening means 8. The plastic tube 1 is then moved slowly in the direction of an arrow mark as it is heated by an induction heating coil 4. Simultaneously, compressed air is pressed into the inside of the core 2 through an air feed pipe 7 to expand the plastic tube. Since an expansion of the plastic tube is limited by a molding die 3 thereupon, the tube is formed in an approximately cylindricity on the whole. The heated, expanded plastic tube is then cooled by a cooling water to obtain a desired thermal contraction pipe.
JP5103379A 1979-04-24 1979-04-24 Production of thermal contraction pipe Pending JPS55142610A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5103379A JPS55142610A (en) 1979-04-24 1979-04-24 Production of thermal contraction pipe

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5103379A JPS55142610A (en) 1979-04-24 1979-04-24 Production of thermal contraction pipe

Publications (1)

Publication Number Publication Date
JPS55142610A true JPS55142610A (en) 1980-11-07

Family

ID=12875488

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5103379A Pending JPS55142610A (en) 1979-04-24 1979-04-24 Production of thermal contraction pipe

Country Status (1)

Country Link
JP (1) JPS55142610A (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5920620A (en) * 1982-07-22 1984-02-02 Hitachi Cable Ltd Method and apparatus for preparing thermally shrinkable tube of large diameter
JPS5959415A (en) * 1982-09-30 1984-04-05 Toyo Chem Co Ltd Preparation of thermally shrinkable tube
JPS5970512A (en) * 1982-10-15 1984-04-21 Toyo Chem Co Ltd Preparation of heat shrinkable tube
JPS59106920A (en) * 1982-12-11 1984-06-20 Fujikura Ltd Preparation of thermally shrinkable tube
US4587075A (en) * 1983-04-22 1986-05-06 Metal Box P.L.C. Method and apparatus for making dimensionally stable thermoplastic tubular articles
CN1302910C (en) * 2003-03-29 2007-03-07 Lg电线株式会社 Expansion pipe having expansion recess and equipment for manufacturing heat shrinkage pipe having said pipe

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5920620A (en) * 1982-07-22 1984-02-02 Hitachi Cable Ltd Method and apparatus for preparing thermally shrinkable tube of large diameter
JPS5959415A (en) * 1982-09-30 1984-04-05 Toyo Chem Co Ltd Preparation of thermally shrinkable tube
JPH0134139B2 (en) * 1982-09-30 1989-07-18 Toyo Kagaku Kk
JPS5970512A (en) * 1982-10-15 1984-04-21 Toyo Chem Co Ltd Preparation of heat shrinkable tube
JPH0134140B2 (en) * 1982-10-15 1989-07-18 Toyo Kagaku Kk
JPS59106920A (en) * 1982-12-11 1984-06-20 Fujikura Ltd Preparation of thermally shrinkable tube
JPH0120047B2 (en) * 1982-12-11 1989-04-14 Fujikura Cable Works Ltd
US4587075A (en) * 1983-04-22 1986-05-06 Metal Box P.L.C. Method and apparatus for making dimensionally stable thermoplastic tubular articles
CN1302910C (en) * 2003-03-29 2007-03-07 Lg电线株式会社 Expansion pipe having expansion recess and equipment for manufacturing heat shrinkage pipe having said pipe

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