FR2392794A1 - PROCESS AND MOLD FOR FORMING PLATES WITH EXPECTED SURFACE FAULTS - Google Patents

PROCESS AND MOLD FOR FORMING PLATES WITH EXPECTED SURFACE FAULTS

Info

Publication number
FR2392794A1
FR2392794A1 FR7816215A FR7816215A FR2392794A1 FR 2392794 A1 FR2392794 A1 FR 2392794A1 FR 7816215 A FR7816215 A FR 7816215A FR 7816215 A FR7816215 A FR 7816215A FR 2392794 A1 FR2392794 A1 FR 2392794A1
Authority
FR
France
Prior art keywords
mold
forming plates
expected surface
surface faults
molds
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
FR7816215A
Other languages
French (fr)
Other versions
FR2392794B1 (en
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.)
Aerojet Rocketdyne Holdings Inc
Original Assignee
General Tire and Rubber Co
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 General Tire and Rubber Co filed Critical General Tire and Rubber Co
Publication of FR2392794A1 publication Critical patent/FR2392794A1/en
Application granted granted Critical
Publication of FR2392794B1 publication Critical patent/FR2392794B1/fr
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
    • B29C33/00—Moulds or cores; Details thereof or accessories therefor
    • B29C33/42—Moulds or cores; Details thereof or accessories therefor characterised by the shape of the moulding surface, e.g. ribs or grooves
    • B29C33/424—Moulding surfaces provided with means for marking or patterning
    • 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
    • B29C45/26—Moulds
    • B29C45/37—Mould cavity walls, i.e. the inner surface forming the mould cavity, e.g. linings
    • B29C45/372—Mould cavity walls, i.e. the inner surface forming the mould cavity, e.g. linings provided with means for marking or patterning, e.g. numbering articles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2105/00—Condition, form or state of moulded material or of the material to be shaped
    • B29K2105/0094—Condition, form or state of moulded material or of the material to be shaped having particular viscosity
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2105/00—Condition, form or state of moulded material or of the material to be shaped
    • B29K2105/06—Condition, form or state of moulded material or of the material to be shaped containing reinforcements, fillers or inserts
    • B29K2105/12—Condition, form or state of moulded material or of the material to be shaped containing reinforcements, fillers or inserts of short lengths, e.g. chopped filaments, staple fibres or bristles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2995/00—Properties of moulding materials, reinforcements, fillers, preformed parts or moulds
    • B29K2995/0037—Other properties
    • B29K2995/0072—Roughness, e.g. anti-slip
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2995/00—Properties of moulding materials, reinforcements, fillers, preformed parts or moulds
    • B29K2995/0037—Other properties
    • B29K2995/0072—Roughness, e.g. anti-slip
    • B29K2995/0073—Roughness, e.g. anti-slip smooth
    • 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)
  • Moulds For Moulding Plastics Or The Like (AREA)
  • Moulding By Coating Moulds (AREA)
  • Casting Or Compression Moulding Of Plastics Or The Like (AREA)
  • Reinforced Plastic Materials (AREA)
  • Compositions Of Macromolecular Compounds (AREA)

Abstract

L'invention est relative à des moules pour le moulage par compression de matières plastiques visqueuses en pièces dont la face apparente soit exempte de défauts. Dans ces moules, la surface qui correspond à la face cachée des pièces est rendue plus rugueuse, par exemple par abrasion, que la surface qui correspond à la face apparente, de façon que la matière plastique s'écoule plus rapidement sur la surface la plus lisse et entraîne ainsi les bulles d'air vers la surface la plus rugueuse. Utilisation pour la fabrication par exemple de panneaux d'automobiles sans défauts de surface.The invention relates to molds for the compression molding of viscous plastics into pieces, the visible face of which is free from defects. In these molds, the surface which corresponds to the hidden face of the parts is made rougher, for example by abrasion, than the surface which corresponds to the visible face, so that the plastic material flows more quickly over the more surface. smooth and thus draws air bubbles to the rougher surface. Use for the production of, for example, automotive panels without surface defects.

FR7816215A 1977-05-31 1978-05-31 PROCESS AND MOLD FOR FORMING PLATES WITH EXPECTED SURFACE FAULTS Granted FR2392794A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US80170977A 1977-05-31 1977-05-31

Publications (2)

Publication Number Publication Date
FR2392794A1 true FR2392794A1 (en) 1978-12-29
FR2392794B1 FR2392794B1 (en) 1980-07-11

Family

ID=25181855

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7816215A Granted FR2392794A1 (en) 1977-05-31 1978-05-31 PROCESS AND MOLD FOR FORMING PLATES WITH EXPECTED SURFACE FAULTS

Country Status (7)

Country Link
JP (1) JPS53149273A (en)
CA (1) CA1108819A (en)
DE (1) DE2802236C3 (en)
FR (1) FR2392794A1 (en)
GB (1) GB1598480A (en)
IT (1) IT1095072B (en)
SE (1) SE426562B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0444367A1 (en) * 1988-08-25 1991-09-04 Daicel Chemical Industries, Ltd. A stamper for injection molding

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5943120U (en) * 1982-09-13 1984-03-21 ミサワホ−ム株式会社 FRP molded product with grain
JPS634145U (en) * 1986-06-26 1988-01-12
JPS63112120A (en) * 1986-10-31 1988-05-17 Ube Nitto Kasei Kk Method for molding reinforced thermoplastic resin molding
JPH033157U (en) * 1989-05-30 1991-01-14

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1240923A (en) * 1958-11-22 1960-09-09 Process for manufacturing objects in liquid synthetic resin, reinforced with fibrous materials, and hardening by catalysis effect
DE2649267A1 (en) * 1976-10-29 1978-05-03 Bayer Ag Electrically and/or thermally conductive metal-fibre filled articles - produced by screw injection moulding with formation of sec. boundary layer flow

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5119802B2 (en) * 1971-08-21 1976-06-21

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1240923A (en) * 1958-11-22 1960-09-09 Process for manufacturing objects in liquid synthetic resin, reinforced with fibrous materials, and hardening by catalysis effect
DE2649267A1 (en) * 1976-10-29 1978-05-03 Bayer Ag Electrically and/or thermally conductive metal-fibre filled articles - produced by screw injection moulding with formation of sec. boundary layer flow

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0444367A1 (en) * 1988-08-25 1991-09-04 Daicel Chemical Industries, Ltd. A stamper for injection molding

Also Published As

Publication number Publication date
DE2802236A1 (en) 1978-12-07
SE7806259L (en) 1978-12-01
IT1095072B (en) 1985-08-10
IT7824004A0 (en) 1978-05-30
DE2802236C3 (en) 1981-12-24
FR2392794B1 (en) 1980-07-11
SE426562B (en) 1983-01-31
GB1598480A (en) 1981-09-23
DE2802236B2 (en) 1981-05-07
JPS53149273A (en) 1978-12-26
CA1108819A (en) 1981-09-15
JPS6155451B2 (en) 1986-11-27

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Legal Events

Date Code Title Description
ST Notification of lapse