CA2143795A1 - Method for blow molding hollow articles and device for the same - Google Patents

Method for blow molding hollow articles and device for the same

Info

Publication number
CA2143795A1
CA2143795A1 CA002143795A CA2143795A CA2143795A1 CA 2143795 A1 CA2143795 A1 CA 2143795A1 CA 002143795 A CA002143795 A CA 002143795A CA 2143795 A CA2143795 A CA 2143795A CA 2143795 A1 CA2143795 A1 CA 2143795A1
Authority
CA
Canada
Prior art keywords
parison
blow molding
hollow needle
diameter hollow
blown
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
CA002143795A
Other languages
French (fr)
Other versions
CA2143795C (en
Inventor
Setsu Matsuhashi
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.)
Toyo Seikan Group Holdings Ltd
Original Assignee
Toyo Seikan Kaisha 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 Toyo Seikan Kaisha Ltd filed Critical Toyo Seikan Kaisha Ltd
Priority to CA002143795A priority Critical patent/CA2143795C/en
Publication of CA2143795A1 publication Critical patent/CA2143795A1/en
Application granted granted Critical
Publication of CA2143795C publication Critical patent/CA2143795C/en
Anticipated expiration legal-status Critical
Expired - Fee Related 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
    • B29C49/58—Blowing means
    • B29C49/60—Blow-needles

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Mechanical Engineering (AREA)
  • Blow-Moulding Or Thermoforming Of Plastics Or The Like (AREA)

Abstract

In a blow molding process, a fused thermoplastic polymer parison is interposed between a pair of split molds. The split molds are closed around the parison to seal the ends. A small diameter hollow needle is inserted through one of the split molds and fluid is blown into the parison forming a balloon. After the balloon begins to form, a large diameter hollow needle is inserted while internal pressure is applied to the parison via the small diameter hollow needle, and a large amount of fluid is blown in. If the balloon contacts the sides of the molds before fluid is blown through the large diameter hollow needle, a glossy bottle is formed. This process is highly productive and reduces the conventional blow molding cycle by 60 percent due to the rapid cooling of the hollow article.
CA002143795A 1995-03-02 1995-03-02 Method for blow molding hollow articles and device for the same Expired - Fee Related CA2143795C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CA002143795A CA2143795C (en) 1995-03-02 1995-03-02 Method for blow molding hollow articles and device for the same

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA002143795A CA2143795C (en) 1995-03-02 1995-03-02 Method for blow molding hollow articles and device for the same

Publications (2)

Publication Number Publication Date
CA2143795A1 true CA2143795A1 (en) 1996-09-03
CA2143795C CA2143795C (en) 2002-05-07

Family

ID=4155349

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002143795A Expired - Fee Related CA2143795C (en) 1995-03-02 1995-03-02 Method for blow molding hollow articles and device for the same

Country Status (1)

Country Link
CA (1) CA2143795C (en)

Also Published As

Publication number Publication date
CA2143795C (en) 2002-05-07

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Legal Events

Date Code Title Description
EEER Examination request
MKLA Lapsed