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WO1998039150A3 - Gas-assisted injection molding of large panels with sequential gating - Google Patents

Gas-assisted injection molding of large panels with sequential gating Download PDF

Info

Publication number
WO1998039150A3
WO1998039150A3 PCT/US1998/004517 US9804517W WO9839150A3 WO 1998039150 A3 WO1998039150 A3 WO 1998039150A3 US 9804517 W US9804517 W US 9804517W WO 9839150 A3 WO9839150 A3 WO 9839150A3
Authority
WO
WIPO (PCT)
Prior art keywords
parts
gas
injection molding
assisted injection
sequential gating
Prior art date
Application number
PCT/US1998/004517
Other languages
French (fr)
Other versions
WO1998039150B1 (en
WO1998039150A2 (en
Inventor
Frederick P Keller
John E Misner
Daniel J Fild
Original Assignee
Cascade Eng Inc
Frederick P Keller
John E Misner
Daniel J Fild
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 US08/914,684 external-priority patent/US6063315A/en
Application filed by Cascade Eng Inc, Frederick P Keller, John E Misner, Daniel J Fild filed Critical Cascade Eng Inc
Priority to AU65457/98A priority Critical patent/AU6545798A/en
Publication of WO1998039150A2 publication Critical patent/WO1998039150A2/en
Publication of WO1998039150A3 publication Critical patent/WO1998039150A3/en
Publication of WO1998039150B1 publication Critical patent/WO1998039150B1/en

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62D—MOTOR VEHICLES; TRAILERS
    • B62D29/00—Superstructures, understructures, or sub-units thereof, characterised by the material thereof
    • B62D29/04—Superstructures, understructures, or sub-units thereof, characterised by the material thereof predominantly of synthetic material
    • B62D29/046—Combined superstructure and frame, i.e. monocoque constructions
    • 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
    • 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
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus 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
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/05—Particular design of joint configurations
    • B29C66/10—Particular design of joint configurations particular design of the joint cross-sections
    • B29C66/11—Joint cross-sections comprising a single joint-segment, i.e. one of the parts to be joined comprising a single joint-segment in the joint cross-section
    • B29C66/112—Single lapped joints
    • 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
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/05—Particular design of joint configurations
    • B29C66/10—Particular design of joint configurations particular design of the joint cross-sections
    • B29C66/11—Joint cross-sections comprising a single joint-segment, i.e. one of the parts to be joined comprising a single joint-segment in the joint cross-section
    • B29C66/114—Single butt joints
    • 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
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/50—General aspects of joining tubular articles; General aspects of joining long products, i.e. bars or profiled elements; General aspects of joining single elements to tubular articles, hollow articles or bars; General aspects of joining several hollow-preforms to form hollow or tubular articles
    • B29C66/51—Joining tubular articles, profiled elements or bars; Joining single elements to tubular articles, hollow articles or bars; Joining several hollow-preforms to form hollow or tubular articles
    • B29C66/54—Joining several hollow-preforms, e.g. half-shells, to form hollow articles, e.g. for making balls, containers; Joining several hollow-preforms, e.g. half-cylinders, to form tubular 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
    • B29C45/0025—Preventing defects on the moulded article, e.g. weld lines, shrinkage marks
    • B29C2045/0032—Preventing defects on the moulded article, e.g. weld lines, shrinkage marks sequential injection from multiple gates, e.g. to avoid weld lines
    • 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
    • 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
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
    • B29C66/71—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the composition of the plastics material of the parts to be joined
    • 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
    • B29L2031/30—Vehicles, e.g. ships or aircraft, or body parts thereof
    • B29L2031/3055—Cars

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Architecture (AREA)
  • Structural Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Injection Moulding Of Plastics Or The Like (AREA)
  • Blow-Moulding Or Thermoforming Of Plastics Or The Like (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)

Abstract

Molding of relatively large articles such as automobile body parts by gas-assisted injection molding with sequential gating of injected thermoplastic resin into the mold cavity. Elongated ribs in the parts form gas channels and strengthening ribs for the parts. Structural parts are made by adhesively joining two such parts made by gas-assisted injection molding through a combination of hollow ribs and joining flanges at sides of the parts.
PCT/US1998/004517 1997-03-07 1998-03-06 Gas-assisted injection molding of large panels with sequential gating WO1998039150A2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU65457/98A AU6545798A (en) 1997-03-07 1998-03-06 Gas-assisted injection molding of large panels with sequential gating

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US4033897P 1997-03-07 1997-03-07
US60/040,338 1997-03-07
US08/914,684 US6063315A (en) 1997-03-07 1997-08-19 Gas-assisted injection molding of large panels with sequential gating
US08/914,684 1997-08-19

Publications (3)

Publication Number Publication Date
WO1998039150A2 WO1998039150A2 (en) 1998-09-11
WO1998039150A3 true WO1998039150A3 (en) 1999-02-18
WO1998039150B1 WO1998039150B1 (en) 1999-03-25

Family

ID=26716980

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US1998/004517 WO1998039150A2 (en) 1997-03-07 1998-03-06 Gas-assisted injection molding of large panels with sequential gating

Country Status (2)

Country Link
AU (1) AU6545798A (en)
WO (1) WO1998039150A2 (en)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6998174B2 (en) 2000-02-24 2006-02-14 Conix Corporation Integrated co-injection molded vehicle components and methods of making the same
US6843954B2 (en) 2000-02-24 2005-01-18 Conix Corporation Injection molding techniques utilizing fluid channels
DE60139605D1 (en) * 2000-02-24 2009-10-01 Conix Corp Multi-component injection molding process with liquid injection for articles with weld lines and articles produced therewith
US7320765B2 (en) * 2004-04-30 2008-01-22 International Automotive Components Group North America, Inc. Gas pin for thermocouple for gas assisted injection molding
US7182892B2 (en) * 2004-04-30 2007-02-27 Lear Corporation Gas assisted injection molding with fixed volume gas reservoir and temperature control
DE102004031546A1 (en) * 2004-06-29 2006-02-09 Priamus System Technologies Ag Method for filling at least one cavity
US7255818B2 (en) 2004-11-08 2007-08-14 Lear Corporation Process control for gas-assisted injection molding applications
EP2656997B1 (en) * 2012-04-23 2020-08-12 ABB Schweiz AG Method for injection moulding of thermoplastic pole parts, and mould for proceeding the same

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0043174A2 (en) * 1980-07-01 1982-01-06 Stamicarbon B.V. Process for injection-moulding plastics
FR2702990A1 (en) * 1993-03-23 1994-09-30 Eurostyle Sa Method of decorating a thermoplastic support by low-pressure overmoulding, decoration and products obtained according to this method
EP0630731A1 (en) * 1993-06-23 1994-12-28 Siebolt Hettinga Method for molding a plastic article using a multi-point volume control system
US5401459A (en) * 1992-10-05 1995-03-28 Infiltrator Systems, Inc. Gas-assisted injection molding of hollow ribbed article

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5162092A (en) 1990-11-29 1992-11-10 Cascade Engineering, Inc. Gas-assisted injection molding with a carpet layer

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0043174A2 (en) * 1980-07-01 1982-01-06 Stamicarbon B.V. Process for injection-moulding plastics
US5401459A (en) * 1992-10-05 1995-03-28 Infiltrator Systems, Inc. Gas-assisted injection molding of hollow ribbed article
FR2702990A1 (en) * 1993-03-23 1994-09-30 Eurostyle Sa Method of decorating a thermoplastic support by low-pressure overmoulding, decoration and products obtained according to this method
EP0630731A1 (en) * 1993-06-23 1994-12-28 Siebolt Hettinga Method for molding a plastic article using a multi-point volume control system

Non-Patent Citations (3)

* Cited by examiner, † Cited by third party
Title
GAULER KURT: "BINDENÄHTE VON SPRITZGIESSTEILEN BESEITIGEN", PLASTVERARBEITER., vol. 37, no. 10, October 1986 (1986-10-01), SPEYER/RHEIN DE, pages 226 - 228, XP002069379 *
MICHAELI W ET AL: "KASKADENSPRITZGIESSEN ANALYSIERT UND MIT CADMOULD BERECHNET", PLASTVERARBEITER, vol. 45, no. 11, November 1994 (1994-11-01), pages 96, 98, 100, 102, XP000482361 *
RUSCH K.C.: "PLASTICS IN AUTOMOBILES", February 1989, SOC. OF AUTOMOTIVE ENGINEERS INC., WARRENDALE, XP002069380, 16572 *

Also Published As

Publication number Publication date
WO1998039150B1 (en) 1999-03-25
AU6545798A (en) 1998-09-22
WO1998039150A2 (en) 1998-09-11

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