JPS5542821A - Method and apparatus for expanding heat-shrinkable synthetic resin tube - Google Patents

Method and apparatus for expanding heat-shrinkable synthetic resin tube

Info

Publication number
JPS5542821A
JPS5542821A JP11622578A JP11622578A JPS5542821A JP S5542821 A JPS5542821 A JP S5542821A JP 11622578 A JP11622578 A JP 11622578A JP 11622578 A JP11622578 A JP 11622578A JP S5542821 A JPS5542821 A JP S5542821A
Authority
JP
Japan
Prior art keywords
resin tube
core
synthetic resin
caliber
conical
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
JP11622578A
Other languages
Japanese (ja)
Other versions
JPS5611580B2 (en
Inventor
Kazutoki Takeda
Nin Sato
Yasuo Negishi
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.)
Nippon Telegraph and Telephone Corp
Sumitomo Electric Industries Ltd
Original Assignee
Nippon Telegraph and Telephone Corp
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 Nippon Telegraph and Telephone Corp, Sumitomo Electric Industries Ltd filed Critical Nippon Telegraph and Telephone Corp
Priority to JP11622578A priority Critical patent/JPS5542821A/en
Publication of JPS5542821A publication Critical patent/JPS5542821A/en
Publication of JPS5611580B2 publication Critical patent/JPS5611580B2/ja
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
    • H02G15/00—Cable fittings
    • H02G15/08—Cable junctions
    • H02G15/18—Cable junctions protected by sleeves, e.g. for communication cable
    • H02G15/1806—Heat shrinkable sleeves
    • H02G15/1813—Wraparound or slotted sleeves

Landscapes

  • Shaping Of Tube Ends By Bending Or Straightening (AREA)
  • Shaping By String And By Release Of Stress In Plastics And The Like (AREA)

Abstract

PURPOSE: To obtain heat-shrinkable synthetic resin tube of large caliber, thick in thickness, of excellent quality and does not occur contraction in longitudinal direction, by softening synthetic resin tube thru heating by inserting the overlapping cylindrical form core into the resin tube and by expanding the resin tube by conical metal jig being inserted from the end part of the overlapping cylindrical form core.
CONSTITUTION: Synthetic resin tube 2 is placed upon the overlapping cylindrical form core 1 being supported by the conical jig, heated air is sent thru the duct 5, and by the heated air blowing out of the exit port 4. Core 1 and the resin tube 2 are heated, while the resin tube 2 is heated and maintained at the temp. between softening point and the pour point of the resin material. Then, caliber of the core 1 is gradually enlarged by pushing two conical metal jigs 3 and 4 toward the axis of the core 1, resulting in the enlarging of the core caliber of the resin tube 2 until it reaches the desired diameter. After cooling, core is removed from being supported by the conical jigs, and the synthetic resin tube of a desired caliber is obtained. Under this constitution, shrinkage of resin tube toward the axial direction is prevented, and especially, the production of the title tube of large caliber and thick in thickness is made possible.
COPYRIGHT: (C)1980,JPO&Japio
JP11622578A 1978-09-20 1978-09-20 Method and apparatus for expanding heat-shrinkable synthetic resin tube Granted JPS5542821A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP11622578A JPS5542821A (en) 1978-09-20 1978-09-20 Method and apparatus for expanding heat-shrinkable synthetic resin tube

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11622578A JPS5542821A (en) 1978-09-20 1978-09-20 Method and apparatus for expanding heat-shrinkable synthetic resin tube

Publications (2)

Publication Number Publication Date
JPS5542821A true JPS5542821A (en) 1980-03-26
JPS5611580B2 JPS5611580B2 (en) 1981-03-16

Family

ID=14681921

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11622578A Granted JPS5542821A (en) 1978-09-20 1978-09-20 Method and apparatus for expanding heat-shrinkable synthetic resin tube

Country Status (1)

Country Link
JP (1) JPS5542821A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60102174A (en) * 1983-11-10 1985-06-06 Yamaki Kk Molded food and its preparation
JPS60180562A (en) * 1984-02-27 1985-09-14 Seiwa Kasei Kk Preparation of water-insoluble edible thin film
JPH0392329A (en) * 1989-09-05 1991-04-17 Olympus Optical Co Ltd Method and apparatus for enlarging diameter of thermoplastic resin tube

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5912685A (en) * 1982-07-12 1984-01-23 Matsushita Electric Ind Co Ltd Speaker device

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60102174A (en) * 1983-11-10 1985-06-06 Yamaki Kk Molded food and its preparation
JPS60180562A (en) * 1984-02-27 1985-09-14 Seiwa Kasei Kk Preparation of water-insoluble edible thin film
JPS6234381B2 (en) * 1984-02-27 1987-07-27 Seiwa Kasei Kk
JPH0392329A (en) * 1989-09-05 1991-04-17 Olympus Optical Co Ltd Method and apparatus for enlarging diameter of thermoplastic resin tube

Also Published As

Publication number Publication date
JPS5611580B2 (en) 1981-03-16

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