JPS5613143A - Manufacture of specially flexible tube made from synthetic resin - Google Patents

Manufacture of specially flexible tube made from synthetic resin

Info

Publication number
JPS5613143A
JPS5613143A JP8748979A JP8748979A JPS5613143A JP S5613143 A JPS5613143 A JP S5613143A JP 8748979 A JP8748979 A JP 8748979A JP 8748979 A JP8748979 A JP 8748979A JP S5613143 A JPS5613143 A JP S5613143A
Authority
JP
Japan
Prior art keywords
tube
synthetic resin
stretched
flexible tube
contractive
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
JP8748979A
Other languages
Japanese (ja)
Other versions
JPS5831291B2 (en
Inventor
Fumio Aoki
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.)
INABA SANGYO KK
Original Assignee
INABA SANGYO KK
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 INABA SANGYO KK filed Critical INABA SANGYO KK
Priority to JP8748979A priority Critical patent/JPS5831291B2/en
Publication of JPS5613143A publication Critical patent/JPS5613143A/en
Publication of JPS5831291B2 publication Critical patent/JPS5831291B2/en
Expired 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
    • B29C71/00—After-treatment of articles without altering their shape; Apparatus therefor
    • B29C71/02—Thermal after-treatment
    • B29C2071/022—Annealing
    • 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
    • B29L2023/00—Tubular articles
    • B29L2023/005—Hoses, i.e. flexible
    • 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
    • B29L2031/703—Bellows

Landscapes

  • Extrusion Moulding Of Plastics Or The Like (AREA)
  • Blow-Moulding Or Thermoforming Of Plastics Or The Like (AREA)
  • Shaping Of Tube Ends By Bending Or Straightening (AREA)

Abstract

PURPOSE: To improve flexibility of a tube, by a method wherein a bellows type or a spiral type synthetic resin made flexible tube compressed to a contractive limit in the axial direction is stretched at the normal temperature after it is heat-treated, and a tensile force is released.
CONSTITUTION: A bellows type or a spiral type synthetic resin made flexible tube molded by a conventional blow-molding method is stretched in the axial direction to a contractive limit, and with this the tube is heat-treated. The tube so treated is stretched at room temperature, and is then released. For example, the synthetic resin made bellows type tube with a length of 294mm obtained by a blow-molding method is compressed in the axial direction of the tube to the contractive limit, and with this tube is immersed in hot water having 100°C. The tube is then restored to room temperature, and is stretched to about its former length. The resultant tube is then released from a tensile force to obtain a flexible tube, with a length of 175mm being excellent in the flexibility.
COPYRIGHT: (C)1981,JPO&Japio
JP8748979A 1979-07-12 1979-07-12 Method for manufacturing highly flexible flexible tubes Expired JPS5831291B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8748979A JPS5831291B2 (en) 1979-07-12 1979-07-12 Method for manufacturing highly flexible flexible tubes

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8748979A JPS5831291B2 (en) 1979-07-12 1979-07-12 Method for manufacturing highly flexible flexible tubes

Publications (2)

Publication Number Publication Date
JPS5613143A true JPS5613143A (en) 1981-02-09
JPS5831291B2 JPS5831291B2 (en) 1983-07-05

Family

ID=13916357

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8748979A Expired JPS5831291B2 (en) 1979-07-12 1979-07-12 Method for manufacturing highly flexible flexible tubes

Country Status (1)

Country Link
JP (1) JPS5831291B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6162761U (en) * 1984-09-28 1986-04-28

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6162761U (en) * 1984-09-28 1986-04-28

Also Published As

Publication number Publication date
JPS5831291B2 (en) 1983-07-05

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