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JPS5649241A - Method for injection molding for double layer parison - Google Patents

Method for injection molding for double layer parison

Info

Publication number
JPS5649241A
JPS5649241A JP12555879A JP12555879A JPS5649241A JP S5649241 A JPS5649241 A JP S5649241A JP 12555879 A JP12555879 A JP 12555879A JP 12555879 A JP12555879 A JP 12555879A JP S5649241 A JPS5649241 A JP S5649241A
Authority
JP
Japan
Prior art keywords
injection molding
layer parison
parison
double layer
shaped
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
JP12555879A
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 JP12555879A priority Critical patent/JPS5649241A/en
Publication of JPS5649241A publication Critical patent/JPS5649241A/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
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/16—Making multilayered or multicoloured articles
    • B29C45/1684—Injecting parison-like articles

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Mechanical Engineering (AREA)
  • Laminated Bodies (AREA)
  • Injection Moulding Of Plastics Or The Like (AREA)

Abstract

PURPOSE:To shape the double layer parison of a bottle and the like by injection molding without melting and injecting the bottom of the parison by a method wherein an opening is provided at the bottom of an outer layer parison and an inner layer parison is shaped by injection molding by using its opening as an injection hole. CONSTITUTION:An outer layer parison 10 having a thread on its neck part and an opening 9 at the bottom is shaped by injection molding and then an inner parison 11 is shaped by injection molding by using the opening as an injection hole 9. The inner layer parison 11 is shaped by injection molding from the bottom part of the outer layer parison 10 and the bottom part of the outer layer parison is not method, injured by injection pressure.
JP12555879A 1979-09-28 1979-09-28 Method for injection molding for double layer parison Pending JPS5649241A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP12555879A JPS5649241A (en) 1979-09-28 1979-09-28 Method for injection molding for double layer parison

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12555879A JPS5649241A (en) 1979-09-28 1979-09-28 Method for injection molding for double layer parison

Publications (1)

Publication Number Publication Date
JPS5649241A true JPS5649241A (en) 1981-05-02

Family

ID=14913162

Family Applications (1)

Application Number Title Priority Date Filing Date
JP12555879A Pending JPS5649241A (en) 1979-09-28 1979-09-28 Method for injection molding for double layer parison

Country Status (1)

Country Link
JP (1) JPS5649241A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5906787A (en) * 1994-02-18 1999-05-25 The Coca-Cola Company Hollow containers having a very thin inert or impermeable inner surface layer by coating the inside surface of the preform
CN109551716A (en) * 2018-11-05 2019-04-02 浙江工商职业技术学院 A kind of family's multi-cavity die cavity bilayer hot runner plastic injection mould

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5906787A (en) * 1994-02-18 1999-05-25 The Coca-Cola Company Hollow containers having a very thin inert or impermeable inner surface layer by coating the inside surface of the preform
US6444155B1 (en) 1994-02-18 2002-09-03 The Coca-Cola Company Hollow containers having a very thin inert or impermeable inner surface layer by coating the inside surface of the preform
CN109551716A (en) * 2018-11-05 2019-04-02 浙江工商职业技术学院 A kind of family's multi-cavity die cavity bilayer hot runner plastic injection mould

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