JPS53112957A - Production of injection molded article - Google Patents

Production of injection molded article

Info

Publication number
JPS53112957A
JPS53112957A JP2716777A JP2716777A JPS53112957A JP S53112957 A JPS53112957 A JP S53112957A JP 2716777 A JP2716777 A JP 2716777A JP 2716777 A JP2716777 A JP 2716777A JP S53112957 A JPS53112957 A JP S53112957A
Authority
JP
Japan
Prior art keywords
molded article
injection molded
production
mold
wall
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
JP2716777A
Other languages
Japanese (ja)
Other versions
JPS5951417B2 (en
Inventor
Masanori Onishi
Michio Kako
Yoshihiro Hara
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.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial 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 Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Priority to JP2716777A priority Critical patent/JPS5951417B2/en
Publication of JPS53112957A publication Critical patent/JPS53112957A/en
Publication of JPS5951417B2 publication Critical patent/JPS5951417B2/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
    • 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
    • B29C45/26—Moulds
    • 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

Abstract

PURPOSE:To produce an injection molded article haring uniform weld line, by furnishing a triangular pillar on the inner wall of a female mold or on the outer wall of a male mold, wherein the gap between the pillar and the opposite wall of the mold is narrower than the gap between the molds at the mold gate.
JP2716777A 1977-03-11 1977-03-11 Production method of injection molded products Expired JPS5951417B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2716777A JPS5951417B2 (en) 1977-03-11 1977-03-11 Production method of injection molded products

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2716777A JPS5951417B2 (en) 1977-03-11 1977-03-11 Production method of injection molded products

Publications (2)

Publication Number Publication Date
JPS53112957A true JPS53112957A (en) 1978-10-02
JPS5951417B2 JPS5951417B2 (en) 1984-12-13

Family

ID=12213488

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2716777A Expired JPS5951417B2 (en) 1977-03-11 1977-03-11 Production method of injection molded products

Country Status (1)

Country Link
JP (1) JPS5951417B2 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1983001225A1 (en) * 1981-10-09 1983-04-14 Western Electric Co Injection molding integral plastic knockout
US4445159A (en) * 1980-11-29 1984-04-24 Hitachi, Ltd. Chassis for video tape recorder

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4445159A (en) * 1980-11-29 1984-04-24 Hitachi, Ltd. Chassis for video tape recorder
WO1983001225A1 (en) * 1981-10-09 1983-04-14 Western Electric Co Injection molding integral plastic knockout

Also Published As

Publication number Publication date
JPS5951417B2 (en) 1984-12-13

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