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FR2376739A1 - Casting silicone rubber moulds for use in injection moulding - by injecting resin around model supported in chase, inverting mould and model above second chase and casting opposite half of mould - Google Patents

Casting silicone rubber moulds for use in injection moulding - by injecting resin around model supported in chase, inverting mould and model above second chase and casting opposite half of mould

Info

Publication number
FR2376739A1
FR2376739A1 FR7700240A FR7700240A FR2376739A1 FR 2376739 A1 FR2376739 A1 FR 2376739A1 FR 7700240 A FR7700240 A FR 7700240A FR 7700240 A FR7700240 A FR 7700240A FR 2376739 A1 FR2376739 A1 FR 2376739A1
Authority
FR
France
Prior art keywords
chase
mould
casting
model
moulds
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
FR7700240A
Other languages
French (fr)
Other versions
FR2376739B3 (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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to FR7700240A priority Critical patent/FR2376739A1/en
Publication of FR2376739A1 publication Critical patent/FR2376739A1/en
Application granted granted Critical
Publication of FR2376739B3 publication Critical patent/FR2376739B3/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
    • B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
    • B29D28/00—Producing nets or the like, e.g. meshes, lattices
    • B29D28/005—Reticulated structure comprising reinforcements of substantial or continuous length
    • 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
    • B29C33/38—Moulds or cores; Details thereof or accessories therefor characterised by the material or the manufacturing process
    • B29C33/40—Plastics, e.g. foam or rubber
    • B29C33/405—Elastomers, e.g. rubber
    • 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
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/14—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles
    • B29C45/14631—Coating reinforcements
    • 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
    • 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
    • B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
    • B29C70/04—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising reinforcements only, e.g. self-reinforcing plastics
    • B29C70/06—Fibrous reinforcements only
    • B29C70/10—Fibrous reinforcements only characterised by the structure of fibrous reinforcements, e.g. hollow fibres
    • B29C70/16—Fibrous reinforcements only characterised by the structure of fibrous reinforcements, e.g. hollow fibres using fibres of substantial or continuous length
    • B29C70/20—Fibrous reinforcements only characterised by the structure of fibrous reinforcements, e.g. hollow fibres using fibres of substantial or continuous length oriented in a single direction, e.g. roofing or other parallel fibres

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Textile Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Composite Materials (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)

Abstract

Moulds for injection moulding of complex or undercut shapes are made by supporting a model of the moulding in a suitable chase and then casting a self curing (silicone) elastomer into the chase to form a mould around the model. The mould together with the model is inverted above a second chase for casting the opposite half of the mould in a similar manner. The model is disengaged from the cavity and the two moulds are mounted in an injection moulding machine. Provides rapid and reliable production of moulds for mouldings for which conventional metal moulds would be uneconomic, i.e. for small quantities or for shapes difficult to disengage or eject. Esp. suitable for materials moulded using relatively low injection pressures, e.g. 2 kg/cm2 and reinforced by incorporating inserts made of twisted glass filaments bound within a glass fibre mesh or sheath.
FR7700240A 1977-01-06 1977-01-06 Casting silicone rubber moulds for use in injection moulding - by injecting resin around model supported in chase, inverting mould and model above second chase and casting opposite half of mould Granted FR2376739A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7700240A FR2376739A1 (en) 1977-01-06 1977-01-06 Casting silicone rubber moulds for use in injection moulding - by injecting resin around model supported in chase, inverting mould and model above second chase and casting opposite half of mould

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7700240A FR2376739A1 (en) 1977-01-06 1977-01-06 Casting silicone rubber moulds for use in injection moulding - by injecting resin around model supported in chase, inverting mould and model above second chase and casting opposite half of mould

Publications (2)

Publication Number Publication Date
FR2376739A1 true FR2376739A1 (en) 1978-08-04
FR2376739B3 FR2376739B3 (en) 1979-09-07

Family

ID=9185181

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7700240A Granted FR2376739A1 (en) 1977-01-06 1977-01-06 Casting silicone rubber moulds for use in injection moulding - by injecting resin around model supported in chase, inverting mould and model above second chase and casting opposite half of mould

Country Status (1)

Country Link
FR (1) FR2376739A1 (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2501571A1 (en) * 1981-03-12 1982-09-17 Renault Moulded car bumpers etc. reinforced with pultruded inserts - to resist peak stresses esp. as flexural or torsional moments
FR2563765A1 (en) * 1984-05-04 1985-11-08 Stylo Matchmakers Int INJECTION MOLDING APPARATUS AND METHOD OF MANUFACTURING AN ARTICLE IN SAID APPARATUS USING A MODELED PART TO FORM THE MOLDING CAVITY
WO1991011311A1 (en) * 1990-01-24 1991-08-08 Sellers Stephen N Method of making a stained glass article
US5340512A (en) * 1993-01-29 1994-08-23 Thomas & Betts Corporation Polymer concrete electrical insulator and method and apparatus for making
WO1995001868A1 (en) * 1993-07-10 1995-01-19 3-D Composites Limited Composite article and method for manufacturing the same
EP3685936A1 (en) * 2019-01-22 2020-07-29 Bajerke Flaig Ruf GbR Mould with elastic separating layer

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2501571A1 (en) * 1981-03-12 1982-09-17 Renault Moulded car bumpers etc. reinforced with pultruded inserts - to resist peak stresses esp. as flexural or torsional moments
FR2563765A1 (en) * 1984-05-04 1985-11-08 Stylo Matchmakers Int INJECTION MOLDING APPARATUS AND METHOD OF MANUFACTURING AN ARTICLE IN SAID APPARATUS USING A MODELED PART TO FORM THE MOLDING CAVITY
WO1991011311A1 (en) * 1990-01-24 1991-08-08 Sellers Stephen N Method of making a stained glass article
US5855984A (en) * 1993-01-10 1999-01-05 3-D Composites Limited Composite article and method for manufacturing the same
US5340512A (en) * 1993-01-29 1994-08-23 Thomas & Betts Corporation Polymer concrete electrical insulator and method and apparatus for making
WO1995001868A1 (en) * 1993-07-10 1995-01-19 3-D Composites Limited Composite article and method for manufacturing the same
EP3685936A1 (en) * 2019-01-22 2020-07-29 Bajerke Flaig Ruf GbR Mould with elastic separating layer

Also Published As

Publication number Publication date
FR2376739B3 (en) 1979-09-07

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Legal Events

Date Code Title Description
ST Notification of lapse