JPS5422459A - Molding of resin - Google Patents

Molding of resin

Info

Publication number
JPS5422459A
JPS5422459A JP8666277A JP8666277A JPS5422459A JP S5422459 A JPS5422459 A JP S5422459A JP 8666277 A JP8666277 A JP 8666277A JP 8666277 A JP8666277 A JP 8666277A JP S5422459 A JPS5422459 A JP S5422459A
Authority
JP
Japan
Prior art keywords
weld
parts
molding
resin
molded
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
JP8666277A
Other languages
Japanese (ja)
Inventor
Shozo Nakamura
Masayoshi Aoki
Tadashi Iizuka
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.)
Hitachi Ltd
Original Assignee
Hitachi 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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP8666277A priority Critical patent/JPS5422459A/en
Publication of JPS5422459A publication Critical patent/JPS5422459A/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
    • B29C45/0025—Preventing defects on the moulded article, e.g. weld lines, shrinkage marks

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Mechanical Engineering (AREA)
  • Injection Moulding Of Plastics Or The Like (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)
  • Casting Or Compression Moulding Of Plastics Or The Like (AREA)

Abstract

PURPOSE: To disperse the weld forming positin and to improve the bending stress of weld planes of molded resin articles, by making the thickness of weld parts of molded articles due to the concentration of moltenr esins injected from the flash gate larger than the other parts.
COPYRIGHT: (C)1979,JPO&Japio
JP8666277A 1977-07-21 1977-07-21 Molding of resin Pending JPS5422459A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8666277A JPS5422459A (en) 1977-07-21 1977-07-21 Molding of resin

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8666277A JPS5422459A (en) 1977-07-21 1977-07-21 Molding of resin

Publications (1)

Publication Number Publication Date
JPS5422459A true JPS5422459A (en) 1979-02-20

Family

ID=13893236

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8666277A Pending JPS5422459A (en) 1977-07-21 1977-07-21 Molding of resin

Country Status (1)

Country Link
JP (1) JPS5422459A (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5842028U (en) * 1981-09-14 1983-03-19 松下電器産業株式会社 Injection molded product with stable weld position
US4511099A (en) * 1982-11-30 1985-04-16 Tdk Corporation Hub of a tape cassette
JPS61242939A (en) * 1985-04-22 1986-10-29 三井東圧化学株式会社 Anticorrosive concrete
JPS62240521A (en) * 1986-04-11 1987-10-21 Matsushita Electric Ind Co Ltd Resin outer box
JPH08276468A (en) * 1995-04-04 1996-10-22 Tohoku Munekata Kk Injection molding method and mold used therefor
JP2003053792A (en) * 2001-08-22 2003-02-26 Denso Corp Injection-molded article and injection mold

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5842028U (en) * 1981-09-14 1983-03-19 松下電器産業株式会社 Injection molded product with stable weld position
US4511099A (en) * 1982-11-30 1985-04-16 Tdk Corporation Hub of a tape cassette
JPS61242939A (en) * 1985-04-22 1986-10-29 三井東圧化学株式会社 Anticorrosive concrete
JPS62240521A (en) * 1986-04-11 1987-10-21 Matsushita Electric Ind Co Ltd Resin outer box
JPH08276468A (en) * 1995-04-04 1996-10-22 Tohoku Munekata Kk Injection molding method and mold used therefor
JP2003053792A (en) * 2001-08-22 2003-02-26 Denso Corp Injection-molded article and injection mold

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