JPS5634433A - Molding method for plastic - Google Patents

Molding method for plastic

Info

Publication number
JPS5634433A
JPS5634433A JP11153179A JP11153179A JPS5634433A JP S5634433 A JPS5634433 A JP S5634433A JP 11153179 A JP11153179 A JP 11153179A JP 11153179 A JP11153179 A JP 11153179A JP S5634433 A JPS5634433 A JP S5634433A
Authority
JP
Japan
Prior art keywords
molding
injection port
auxiliary plunger
auxiliary
blow molding
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
JP11153179A
Other languages
Japanese (ja)
Other versions
JPS5842017B2 (en
Inventor
Gengo Ito
Yoshimichi Shirai
Hiroshi Ito
Seiji Yonezu
Satoshi Yasuda
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.)
Asmo Co Ltd
Original Assignee
Asmo Co 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 Asmo Co Ltd filed Critical Asmo Co Ltd
Priority to JP54111531A priority Critical patent/JPS5842017B2/en
Publication of JPS5634433A publication Critical patent/JPS5634433A/en
Publication of JPS5842017B2 publication Critical patent/JPS5842017B2/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
    • 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
    • B29C49/06—Injection blow-moulding
    • 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
    • B29C45/17—Component parts, details or accessories; Auxiliary operations
    • B29C45/46—Means for plasticising or homogenising the moulding material or forcing it into the mould
    • 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
    • B29C2049/023—Combined blow-moulding and manufacture of the preform or the parison using inherent heat of the preform, i.e. 1 step blow moulding
    • 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
    • B29C45/0025—Preventing defects on the moulded article, e.g. weld lines, shrinkage marks

Landscapes

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

Abstract

PURPOSE:To prepare a product having much varied thickness through molding with excellent yield rate of material by replenishing resin to any desired place of worked substance in the process of blow molding by means of an auxiliary plunger. CONSTITUTION:In addition to the main injection port 8 for blow molding, an auxiliary plunger, i.e. an auxiliary injection port 11 is provided in a molding machine, and the replenishment of resin to any desired place of worked substance in the process of blow molding is performed by means of the auxiliary plunger 11. This method is effective, in particular, for preparation of a product having much varied thickness such as a vessel with projections. In molding of a vessel with an edge, for instance, the occurrence of flashes in the lateral direction is all gone since the method wherein the replenishment is performed through the injection port 11 by means of the auxiliary plunger after a mold being closed is employed, and the yield rate of material is raised as the worked substance turns to be more complex.
JP54111531A 1979-08-31 1979-08-31 Plastic molding method and equipment Expired JPS5842017B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP54111531A JPS5842017B2 (en) 1979-08-31 1979-08-31 Plastic molding method and equipment

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP54111531A JPS5842017B2 (en) 1979-08-31 1979-08-31 Plastic molding method and equipment

Publications (2)

Publication Number Publication Date
JPS5634433A true JPS5634433A (en) 1981-04-06
JPS5842017B2 JPS5842017B2 (en) 1983-09-16

Family

ID=14563696

Family Applications (1)

Application Number Title Priority Date Filing Date
JP54111531A Expired JPS5842017B2 (en) 1979-08-31 1979-08-31 Plastic molding method and equipment

Country Status (1)

Country Link
JP (1) JPS5842017B2 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3439285A1 (en) * 1984-02-13 1985-08-22 Excell Corp., Tokio/Tokyo Blow-moulded tubes with projections - produced by feeding melt to recess in one mould cavity extruding tubular parison into cavity applying second mould tool and blowing
US4659531A (en) * 1984-02-13 1987-04-21 Excell Corporation Method and apparatus for manufacturing a hollow plastic product
US6119731A (en) * 1984-02-13 2000-09-19 Excell Corporation Hollow plastic product

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3439285A1 (en) * 1984-02-13 1985-08-22 Excell Corp., Tokio/Tokyo Blow-moulded tubes with projections - produced by feeding melt to recess in one mould cavity extruding tubular parison into cavity applying second mould tool and blowing
US4659531A (en) * 1984-02-13 1987-04-21 Excell Corporation Method and apparatus for manufacturing a hollow plastic product
US4907957A (en) * 1984-02-13 1990-03-13 Excell Corporation Molding apparatus for forming a parison and product of differing materials
US5653265A (en) * 1984-02-13 1997-08-05 Excell Corporation Hollow plastic product
US6119731A (en) * 1984-02-13 2000-09-19 Excell Corporation Hollow plastic product
US6319454B1 (en) 1984-02-13 2001-11-20 Excell Corporation Method and apparatus for manufacturing a hollow plastic product

Also Published As

Publication number Publication date
JPS5842017B2 (en) 1983-09-16

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