JPS54111557A - Hollow molded article having integrated internal ribs, and method for forming the same - Google Patents

Hollow molded article having integrated internal ribs, and method for forming the same

Info

Publication number
JPS54111557A
JPS54111557A JP1850478A JP1850478A JPS54111557A JP S54111557 A JPS54111557 A JP S54111557A JP 1850478 A JP1850478 A JP 1850478A JP 1850478 A JP1850478 A JP 1850478A JP S54111557 A JPS54111557 A JP S54111557A
Authority
JP
Japan
Prior art keywords
cavity
molded article
gas
forming
ribs
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
JP1850478A
Other languages
Japanese (ja)
Other versions
JPS6153208B2 (en
Inventor
Hiroshi Iijima
Hiroshi Kataoka
Kaoru Toyouchi
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.)
Asahi Dow Ltd
Asahi Chemical Industry Co Ltd
Original Assignee
Asahi Dow Ltd
Asahi Chemical Industry 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 Asahi Dow Ltd, Asahi Chemical Industry Co Ltd filed Critical Asahi Dow Ltd
Priority to JP1850478A priority Critical patent/JPS54111557A/en
Publication of JPS54111557A publication Critical patent/JPS54111557A/en
Publication of JPS6153208B2 publication Critical patent/JPS6153208B2/ja
Granted 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
    • B29C45/1703—Introducing an auxiliary fluid into the mould
    • B29C45/1704—Introducing an auxiliary fluid into the mould the fluid being introduced into the interior of the injected material which is still in a molten state, e.g. for producing hollow articles
    • 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
    • B29C45/1703—Introducing an auxiliary fluid into the mould
    • B29C45/1704—Introducing an auxiliary fluid into the mould the fluid being introduced into the interior of the injected material which is still in a molten state, e.g. for producing hollow articles
    • B29C2045/1717—Temperature controlled mould parts to control the location or configuration of the hollow

Abstract

PURPOSE:To manufacture a hollow molded article having integrated internal ribs, economically, using single mold and single molding operation, by injecting a mold cavity with an insufficient amount of a resin to fill the cavity, and introducing a gas into the cavity thus leaving the part to which the gas is hard to enter as the ribs. CONSTITUTION:A mold cavity 6 is insufficiently filled with a molten resin 7 by injection. The molten resin 7 in the cavity is partly made to have higher resistance to the intrusion of the gas, during or after the injection, for example by partial cooling, etc. The gas is introduced into the cavity, and the resistance part is left as a rib thus forming a molded article composed of circumference part 14, ribs 15 and hollow parts 13.
JP1850478A 1978-02-22 1978-02-22 Hollow molded article having integrated internal ribs, and method for forming the same Granted JPS54111557A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1850478A JPS54111557A (en) 1978-02-22 1978-02-22 Hollow molded article having integrated internal ribs, and method for forming the same

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1850478A JPS54111557A (en) 1978-02-22 1978-02-22 Hollow molded article having integrated internal ribs, and method for forming the same

Publications (2)

Publication Number Publication Date
JPS54111557A true JPS54111557A (en) 1979-08-31
JPS6153208B2 JPS6153208B2 (en) 1986-11-17

Family

ID=11973444

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1850478A Granted JPS54111557A (en) 1978-02-22 1978-02-22 Hollow molded article having integrated internal ribs, and method for forming the same

Country Status (1)

Country Link
JP (1) JPS54111557A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01159215A (en) * 1987-12-16 1989-06-22 Hiroshi Yamamoto Molding material made of synthetic resin involving air gap and its manufacture
JPH04357009A (en) * 1991-01-30 1992-12-10 Asahi Chem Ind Co Ltd Hollow injection-molded article and hollow injection molding method and mold
EP0584080A1 (en) * 1991-05-13 1994-03-02 Melea Limited Method and system for injection molding utilizing pressurized fluid source within a chamber in the mold
US6602062B1 (en) 1999-04-23 2003-08-05 Nissan Motor Co., Ltd. Molded resin plate with internal voids and method and system for manufacturing a molded resin plate

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63170308U (en) * 1987-04-28 1988-11-07
US5069858A (en) * 1989-09-18 1991-12-03 Milad Limited Partnership Method for the use of gas assistance in the molding of plastic articles

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS539870A (en) * 1976-07-14 1978-01-28 Union Carbide Corp Process for molding plastic material and its product thereby

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS539870A (en) * 1976-07-14 1978-01-28 Union Carbide Corp Process for molding plastic material and its product thereby

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01159215A (en) * 1987-12-16 1989-06-22 Hiroshi Yamamoto Molding material made of synthetic resin involving air gap and its manufacture
JPH0371245B2 (en) * 1987-12-16 1991-11-12 Hiroshi Yamamoto
JPH04357009A (en) * 1991-01-30 1992-12-10 Asahi Chem Ind Co Ltd Hollow injection-molded article and hollow injection molding method and mold
JPH0712621B2 (en) * 1991-01-30 1995-02-15 旭化成工業株式会社 Hollow injection mold, hollow injection molding method and mold
EP0584080A1 (en) * 1991-05-13 1994-03-02 Melea Limited Method and system for injection molding utilizing pressurized fluid source within a chamber in the mold
EP0584080A4 (en) * 1991-05-13 1995-03-22 Milad Lp Method and system for injection molding utilizing pressurized fluid source within a chamber in the mold.
US6602062B1 (en) 1999-04-23 2003-08-05 Nissan Motor Co., Ltd. Molded resin plate with internal voids and method and system for manufacturing a molded resin plate

Also Published As

Publication number Publication date
JPS6153208B2 (en) 1986-11-17

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