JPS57142325A - Method for orientated blow molding - Google Patents

Method for orientated blow molding

Info

Publication number
JPS57142325A
JPS57142325A JP2778881A JP2778881A JPS57142325A JP S57142325 A JPS57142325 A JP S57142325A JP 2778881 A JP2778881 A JP 2778881A JP 2778881 A JP2778881 A JP 2778881A JP S57142325 A JPS57142325 A JP S57142325A
Authority
JP
Japan
Prior art keywords
temp
wall part
parison
blow molding
mold
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
JP2778881A
Other languages
Japanese (ja)
Inventor
Katashi 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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to JP2778881A priority Critical patent/JPS57142325A/en
Publication of JPS57142325A publication Critical patent/JPS57142325A/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
    • B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
    • B29C49/42—Component parts, details or accessories; Auxiliary operations
    • B29C49/64—Heating or cooling preforms, parisons or blown articles
    • B29C49/6409—Thermal conditioning of preforms
    • B29C49/6436—Thermal conditioning of preforms characterised by temperature differential
    • B29C49/6445—Thermal conditioning of preforms characterised by temperature differential through the preform length

Landscapes

  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Mechanical Engineering (AREA)
  • Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
  • Blow-Moulding Or Thermoforming Of Plastics Or The Like (AREA)

Abstract

PURPOSE:To subject a hot parison to orientation blow molding to certainly mold the same into a desired hollow molded product, in temp. distrubution of the hot parison directly before the orientation blow molding, by adjusting the temp. of the outer wall part thereof to lower temp. and the inner wall part thereof to higher temp. CONSTITUTION:The female mold of an injection metal mold is set to lower tmep. and the male mold thereof to higher temp. to transfer an injection molded parison to an orientated blow molding part and the orientated blow mlding is carried out in such a temp. distribution condition that the temp. of the parison directly before the orientation blow molding is near to inherent heat deformation temp. of the parison material in the outer wall part thereof and the inner wall part thereof is set to the temp. extremely higher than that of the outer wall part. By this method, because strength is held in the outer wall part thereof and the effect for preventing the leakage of air in the inner wal part, a good hollow molded product is obtained without cutting or bursting the parison.
JP2778881A 1981-02-27 1981-02-27 Method for orientated blow molding Pending JPS57142325A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2778881A JPS57142325A (en) 1981-02-27 1981-02-27 Method for orientated blow molding

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2778881A JPS57142325A (en) 1981-02-27 1981-02-27 Method for orientated blow molding

Publications (1)

Publication Number Publication Date
JPS57142325A true JPS57142325A (en) 1982-09-03

Family

ID=12230707

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2778881A Pending JPS57142325A (en) 1981-02-27 1981-02-27 Method for orientated blow molding

Country Status (1)

Country Link
JP (1) JPS57142325A (en)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5021058A (en) * 1973-06-25 1975-03-06

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5021058A (en) * 1973-06-25 1975-03-06

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