DE69319094T2 - Vorrichtung und Verfahren zum Spritzgiessen mit Gasinjektion - Google Patents

Vorrichtung und Verfahren zum Spritzgiessen mit Gasinjektion

Info

Publication number
DE69319094T2
DE69319094T2 DE69319094T DE69319094T DE69319094T2 DE 69319094 T2 DE69319094 T2 DE 69319094T2 DE 69319094 T DE69319094 T DE 69319094T DE 69319094 T DE69319094 T DE 69319094T DE 69319094 T2 DE69319094 T2 DE 69319094T2
Authority
DE
Germany
Prior art keywords
injection
injection molding
gas injection
gas
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.)
Expired - Lifetime
Application number
DE69319094T
Other languages
English (en)
Other versions
DE69319094D1 (de
Inventor
Terence Colwyn Pearson
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.)
Cinpres Gas Injection Ltd
Original Assignee
HAYWOOD HOLDINGS Ltd CANNOCK STAFFORDSHIRE GB
HAYWOOD HOLDINGS 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
Priority claimed from GB929201989A external-priority patent/GB9201989D0/en
Priority claimed from GB929207431A external-priority patent/GB9207431D0/en
Application filed by HAYWOOD HOLDINGS Ltd CANNOCK STAFFORDSHIRE GB, HAYWOOD HOLDINGS Ltd filed Critical HAYWOOD HOLDINGS Ltd CANNOCK STAFFORDSHIRE GB
Publication of DE69319094D1 publication Critical patent/DE69319094D1/de
Application granted granted Critical
Publication of DE69319094T2 publication Critical patent/DE69319094T2/de
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • B29C45/1734—Nozzles therefor
    • B29C45/1736—Nozzles therefor provided with small holes permitting the flow of gas therethrough, e.g. using a porous element of sintered material
    • 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
    • B29C45/1734—Nozzles therefor
    • 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
    • B29C45/174—Applying a pressurised fluid to the outer surface of the injected material inside the mould cavity, e.g. for preventing shrinkage marks
    • 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
    • B29C45/174—Applying a pressurised fluid to the outer surface of the injected material inside the mould cavity, e.g. for preventing shrinkage marks
    • B29C2045/1741—Seals preventing pressurized fluid to escape from the mould cavity

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)
DE69319094T 1992-01-30 1993-02-01 Vorrichtung und Verfahren zum Spritzgiessen mit Gasinjektion Expired - Lifetime DE69319094T2 (de)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
GB929201989A GB9201989D0 (en) 1992-01-30 1992-01-30 Injection moulding with gas injection
GB929207431A GB9207431D0 (en) 1992-04-04 1992-04-04 Injection moulding with sealed gas injection
GB929211144A GB9211144D0 (en) 1992-01-30 1992-05-26 Injection moulding with gas injection
GB929211150A GB9211150D0 (en) 1992-04-04 1992-05-26 Injection moulding with sealed gas injection
PCT/GB1993/000213 WO1993014919A1 (en) 1992-01-30 1993-02-01 Apparatus for and method of injection moulding with gas injection

Publications (2)

Publication Number Publication Date
DE69319094D1 DE69319094D1 (de) 1998-07-16
DE69319094T2 true DE69319094T2 (de) 1999-02-11

Family

ID=27450811

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69319094T Expired - Lifetime DE69319094T2 (de) 1992-01-30 1993-02-01 Vorrichtung und Verfahren zum Spritzgiessen mit Gasinjektion

Country Status (3)

Country Link
EP (1) EP0624122B1 (de)
DE (1) DE69319094T2 (de)
WO (1) WO1993014919A1 (de)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5344596A (en) * 1992-03-23 1994-09-06 Icp Systems, Inc. Method for fluid compression of injection molded plastic material
US5284429A (en) * 1992-05-07 1994-02-08 Cascade Engineering, Inc. Gas-assisted injection molding apparatus
GB9306425D0 (en) * 1993-03-27 1993-05-19 Gas Injection Ltd Apparatus for and a method of injection moulding case i
JP3414459B2 (ja) * 1993-11-15 2003-06-09 三菱エンジニアリングプラスチックス株式会社 ガス注入ノズル
US6106260A (en) * 1995-03-03 2000-08-22 Sumitomo Chemical Company, Limited Mold useful in the production of hollow thermoplastic molded articles
US5716560A (en) * 1995-09-14 1998-02-10 Icp Systems, Inc. Gas assisted injection molding combining internal and external gas pressures

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4164523A (en) * 1976-09-09 1979-08-14 Robert Hanning Method of injection-molding and cooling of shaped synthetic-resin bodies
DE321117T1 (de) * 1987-12-16 1993-09-02 Ladney jun., Michael, Grosse Pointe Shores, Mich. Verfahren und system zum von lokalem fluidium assistierten spritzgiessen und dadurch hergstellter koerper.
US5098637A (en) * 1988-07-11 1992-03-24 Milad Limited Partnership Process for injection molding and hollow plastic article produced thereby
EP0400135B1 (de) * 1988-12-05 1997-07-23 CARROLL, Robert, E. Spritzgiessverfahren
FR2645068A1 (fr) * 1989-04-03 1990-10-05 Vanotti Gerard Procede de fabrication de pieces en matiere thermoplastique a paroi mince et installation pour la mise en oeuvre du procede
JP2835976B2 (ja) * 1990-04-04 1998-12-14 旭化成工業株式会社 中空成形体の製造方法
DE4036412A1 (de) * 1990-11-15 1992-05-21 Moeller Werke Gmbh Duese zum injizieren von gas in die kavitaet eines kunststofformwerkzeugs, insbesondere einer spritzgussform
JPH0767716B2 (ja) * 1991-01-14 1995-07-26 新日鐵化学株式会社 熱可塑性樹脂成形品の射出成形法及び射出成形用金型

Also Published As

Publication number Publication date
EP0624122A1 (de) 1994-11-17
DE69319094D1 (de) 1998-07-16
EP0624122B1 (de) 1998-06-10
WO1993014919A1 (en) 1993-08-05

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8327 Change in the person/name/address of the patent owner

Owner name: CINPRES GAS INJECTION LTD., NANTWICH, CHESHIRE, GB

R071 Expiry of right

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