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AU8717891A - Process for injection moulding parts made of synthetic thermoplastic materials - Google Patents

Process for injection moulding parts made of synthetic thermoplastic materials

Info

Publication number
AU8717891A
AU8717891A AU87178/91A AU8717891A AU8717891A AU 8717891 A AU8717891 A AU 8717891A AU 87178/91 A AU87178/91 A AU 87178/91A AU 8717891 A AU8717891 A AU 8717891A AU 8717891 A AU8717891 A AU 8717891A
Authority
AU
Australia
Prior art keywords
region
thermoplast
injection moulding
parts made
doughy
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.)
Abandoned
Application number
AU87178/91A
Inventor
Klaus Delbrouck
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.)
Franz Delbrouck GmbH
Original Assignee
Franz Delbrouck GmbH
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=6417402&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=AU8717891(A) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Franz Delbrouck GmbH filed Critical Franz Delbrouck GmbH
Publication of AU8717891A publication Critical patent/AU8717891A/en
Abandoned 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
    • B29C45/1705—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 using movable mould parts
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2031/00—Other particular articles
    • B29L2031/712—Containers; Packaging elements or accessories, Packages
    • B29L2031/7178—Pallets

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Mechanical Engineering (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)
  • Injection Moulding Of Plastics Or The Like (AREA)
  • Blow-Moulding Or Thermoforming Of Plastics Or The Like (AREA)
  • Compositions Of Macromolecular Compounds (AREA)

Abstract

In order to provide a process for the injection moulding of parts made of synthetic thermoplastic material, whereby thermoplast is injected under pressure into a mould consisting of two halves and to compensate for the shrinkage caused by curing further thermoplast is supplied, by means of which it is particularly easy and possible with simple structural means to form plastic parts with closed internal spaces, it is proposed that, to form a hollow in a region (5) of the plastic part, the mould (1) surrounding this region is enlarged by moving a part of the wall (3) during the post-pressure stage and injecting gas under high pressure into the thermoplastic material therein which is doughy at least in the core so that the skin (6) of the thermoplast close to the moved wall region and already cured is pressed against the moved wall region (3) with the simultaneous formation of a hollow space and the doughy core part of this region binds the separating seams between the moulded plastic part in this region and the partial region of the thermoplast pushed towards the moved wall region.
AU87178/91A 1990-10-31 1991-10-19 Process for injection moulding parts made of synthetic thermoplastic materials Abandoned AU8717891A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4034663 1990-10-31
DE4034663A DE4034663A1 (en) 1990-10-31 1990-10-31 METHOD FOR INJECTION MOLDING PARTS FROM THERMOPLASTIC PLASTIC

Publications (1)

Publication Number Publication Date
AU8717891A true AU8717891A (en) 1992-05-26

Family

ID=6417402

Family Applications (1)

Application Number Title Priority Date Filing Date
AU87178/91A Abandoned AU8717891A (en) 1990-10-31 1991-10-19 Process for injection moulding parts made of synthetic thermoplastic materials

Country Status (5)

Country Link
EP (1) EP0555241B2 (en)
AT (1) ATE127724T1 (en)
AU (1) AU8717891A (en)
DE (2) DE4034663A1 (en)
WO (1) WO1992007697A1 (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4219675A1 (en) * 1991-12-04 1993-06-09 Utescheny-Endos Gmbh, 7519 Zaisenhausen, De METHOD AND DEVICE FOR INJECTION MOLDING A HOLLOW PLASTIC BODY
DE4319381C2 (en) * 1993-06-11 1996-07-11 Battenfeld Gmbh Process for the injection molding of molded parts made of thermoplastic material and molding tool for carrying out the same
SE503969E (en) * 1994-01-28 2004-05-04 Perstorp Ab Sarg
US5639417A (en) * 1994-07-15 1997-06-17 Mitsubishi Gas Chemical Company, Inc. Mold apparatus for process for injection molding
US5885518A (en) * 1995-06-21 1999-03-23 Melea Limited Method for injection molding utilizing a variable volume spill area within an article-defining mold cavity and article produced thereby
DE10330265B4 (en) * 2003-07-04 2008-02-28 Arca Systems Gmbh Plastic product, process for producing a plastic product and device for producing a plastic product

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1027943B (en) * 1973-12-28 1978-12-20 Asahi Dow Ltd METHOD OF PRODUCTION OF SHAPED ARTICLES FROM SYNTHETIC RESIN MATERIALS
DE2501314A1 (en) * 1975-01-15 1976-07-22 Roehm Gmbh INJECTION MOLDING OF HOLLOW MOLDED PARTS MADE OF THERMOPLASTIC PLASTICS, IN PARTICULAR FOR THE CONSTRUCTION SECTOR
GB2139548B (en) * 1983-05-11 1986-11-19 James Watson Hendry Injection moulding
AU7247087A (en) * 1986-05-19 1987-11-26 Hendry, J.W. Injection with screw feed and subsequently gas pressure
GB2217644A (en) * 1988-04-22 1989-11-01 Cinpres Ltd Injection moulding
AT399470B (en) * 1988-12-15 1995-05-26 Head Sport Ag METHOD FOR PRODUCING A BALL RACKET FRAME
DE3940186A1 (en) * 1989-12-05 1991-06-06 Rudolf Koose Moulding crates with hollow handles - by injection moulding crate with solid handle, forming an outlet from cavity, and blowing out core of handle while still soft
NL8903105A (en) * 1989-12-19 1991-07-16 Wavin Bv Plastic crate with hollow column - has gas-injection opening in column with sealing wall below

Also Published As

Publication number Publication date
EP0555241B1 (en) 1995-09-13
WO1992007697A1 (en) 1992-05-14
ATE127724T1 (en) 1995-09-15
DE59106494D1 (en) 1995-10-19
EP0555241B2 (en) 1998-06-10
DE4034663A1 (en) 1992-05-07
EP0555241A1 (en) 1993-08-18

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