JPS57165223A - Preparation of blow molded hollow article - Google Patents

Preparation of blow molded hollow article

Info

Publication number
JPS57165223A
JPS57165223A JP56050917A JP5091781A JPS57165223A JP S57165223 A JPS57165223 A JP S57165223A JP 56050917 A JP56050917 A JP 56050917A JP 5091781 A JP5091781 A JP 5091781A JP S57165223 A JPS57165223 A JP S57165223A
Authority
JP
Japan
Prior art keywords
parison
molding dies
semiproduct
kept
air
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
JP56050917A
Other languages
Japanese (ja)
Inventor
Yuji Kamimura
Masao Ozawa
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.)
IKEGAMI KAKEN KOGYO KK
Original Assignee
IKEGAMI KAKEN KOGYO 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 IKEGAMI KAKEN KOGYO KK filed Critical IKEGAMI KAKEN KOGYO KK
Priority to JP56050917A priority Critical patent/JPS57165223A/en
Publication of JPS57165223A publication Critical patent/JPS57165223A/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
    • B29C49/18—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor using several blowing steps
    • 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
    • B29C49/6472—Heating or cooling preforms, parisons or blown articles in several stages
    • 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
    • B29C49/02—Combined blow-moulding and manufacture of the preform or the parison
    • B29C49/04—Extrusion blow-moulding
    • 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
    • B29L2031/712—Containers; Packaging elements or accessories, Packages
    • B29L2031/7172—Fuel tanks, jerry cans

Landscapes

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

Abstract

PURPOSE:To obtain a hollow molded article uniform in wall thickness, free of chaps and excellent in appearance by premolding a parsion in a high temperature mold and finish-molding an obtained semi-product in a low temperature mold. CONSTITUTION:A cylindrical parison 2 is injected from a parison die 1 between 1st molding dies 3, 4 kept at high temperature as much as 240-300 deg.C, the molding dies 3, 4 are closed, air is blasted from an air blast tube 9 into the parison 2, the parison 2 is expanded and premolded into a semiproduct state. Thus, since the 1st molding dies 3, 4 are kept at high tempeatures, the parison 2 is not attached and slides well even if it comes in contact with the surfaces of the molding dies and a semiproduct of uniform thickness is obtained. Then, the molding dies 3, 4 are opened, the semiproduct is stored in the 2nd molding dies 6, 7 kept at low temperatures, air is blasted again into the parison 2 and finish-molded to obtain a desired hollow molded article.
JP56050917A 1981-04-03 1981-04-03 Preparation of blow molded hollow article Pending JPS57165223A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56050917A JPS57165223A (en) 1981-04-03 1981-04-03 Preparation of blow molded hollow article

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56050917A JPS57165223A (en) 1981-04-03 1981-04-03 Preparation of blow molded hollow article

Publications (1)

Publication Number Publication Date
JPS57165223A true JPS57165223A (en) 1982-10-12

Family

ID=12872136

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56050917A Pending JPS57165223A (en) 1981-04-03 1981-04-03 Preparation of blow molded hollow article

Country Status (1)

Country Link
JP (1) JPS57165223A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6743402B2 (en) 1998-05-26 2004-06-01 Kenzo Shimakawa Purifier of noxious gas and method for manufacturing the same

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4998471A (en) * 1972-11-18 1974-09-18
JPS50100166A (en) * 1974-01-09 1975-08-08

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4998471A (en) * 1972-11-18 1974-09-18
JPS50100166A (en) * 1974-01-09 1975-08-08

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6743402B2 (en) 1998-05-26 2004-06-01 Kenzo Shimakawa Purifier of noxious gas and method for manufacturing the same

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