JPS54158463A - Waterproof heat-shrinkable type - Google Patents

Waterproof heat-shrinkable type

Info

Publication number
JPS54158463A
JPS54158463A JP6792778A JP6792778A JPS54158463A JP S54158463 A JPS54158463 A JP S54158463A JP 6792778 A JP6792778 A JP 6792778A JP 6792778 A JP6792778 A JP 6792778A JP S54158463 A JPS54158463 A JP S54158463A
Authority
JP
Japan
Prior art keywords
radiation
tube
polyolefin resin
dimer acid
heat
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
JP6792778A
Other languages
Japanese (ja)
Other versions
JPS5617218B2 (en
Inventor
Yutaka Hibino
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 JP6792778A priority Critical patent/JPS54158463A/en
Publication of JPS54158463A publication Critical patent/JPS54158463A/en
Publication of JPS5617218B2 publication Critical patent/JPS5617218B2/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
    • 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
    • B29C61/0608—Making preforms having internal stresses, e.g. plastic memory characterised by the configuration or structure of the preforms
    • B29C61/0616—Making preforms having internal stresses, e.g. plastic memory characterised by the configuration or structure of the preforms layered or partially layered preforms, e.g. preforms with layers of adhesive or sealing compositions

Landscapes

  • Extrusion Moulding Of Plastics Or The Like (AREA)
  • Insulating Bodies (AREA)

Abstract

PURPOSE:A heat-shrinkable tube having improved watertightness, waterproofness, and insulating properties, manufactured by crosslinking an outer layer polyolefin resin layer of a coextruded tubular material comprising an inner polyamide resin layer based on a specific dimer acid with radiation, and by expanding the material thermally. CONSTITUTION:A polyamide resin based on a dimer acid capable of improving the heat resistance while retaining the fluidity without gelling by radiation is extruded to form the inner layer 2 of the polyolefin resin tube 1. The polyolefin resin is capable of gelling by crosslinking partly with radiation. The polyamide obtained from a dimer acid, a dibasic acid, and a diamine provides an increased softening point by radiation at a dose of 5-40 Mrad, and the processibility during the heat expansion and adhesiveness to various adherends at high temperatures can be improved. The coextruded tube is exposed to radiation and expanded thermally to give the desired tube.
JP6792778A 1978-06-05 1978-06-05 Waterproof heat-shrinkable type Granted JPS54158463A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP6792778A JPS54158463A (en) 1978-06-05 1978-06-05 Waterproof heat-shrinkable type

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6792778A JPS54158463A (en) 1978-06-05 1978-06-05 Waterproof heat-shrinkable type

Publications (2)

Publication Number Publication Date
JPS54158463A true JPS54158463A (en) 1979-12-14
JPS5617218B2 JPS5617218B2 (en) 1981-04-21

Family

ID=13359025

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6792778A Granted JPS54158463A (en) 1978-06-05 1978-06-05 Waterproof heat-shrinkable type

Country Status (1)

Country Link
JP (1) JPS54158463A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2012146453A (en) * 2011-01-11 2012-08-02 Yazaki Corp Cable protective tube

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0614129U (en) * 1992-07-24 1994-02-22 三機工業株式会社 Shaft holding structure of roller conveyor

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS437252Y1 (en) * 1965-12-28 1968-04-01
JPS503790A (en) * 1973-05-15 1975-01-16
US4018733A (en) * 1972-09-25 1977-04-19 Raychem Corporation Hot melt adhesive composition comprising an acidic ethylene polymer and a polyamide
JPS52101277A (en) * 1976-02-20 1977-08-25 Sumitomo Electric Industries Thermally shrinkable tube of water tight type

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS437252Y1 (en) * 1965-12-28 1968-04-01
US4018733A (en) * 1972-09-25 1977-04-19 Raychem Corporation Hot melt adhesive composition comprising an acidic ethylene polymer and a polyamide
JPS503790A (en) * 1973-05-15 1975-01-16
JPS52101277A (en) * 1976-02-20 1977-08-25 Sumitomo Electric Industries Thermally shrinkable tube of water tight type

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2012146453A (en) * 2011-01-11 2012-08-02 Yazaki Corp Cable protective tube

Also Published As

Publication number Publication date
JPS5617218B2 (en) 1981-04-21

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