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FR2050804A5 - Automatic cycle control for thermosetting - moulding operations - Google Patents

Automatic cycle control for thermosetting - moulding operations

Info

Publication number
FR2050804A5
FR2050804A5 FR6921314A FR6921314A FR2050804A5 FR 2050804 A5 FR2050804 A5 FR 2050804A5 FR 6921314 A FR6921314 A FR 6921314A FR 6921314 A FR6921314 A FR 6921314A FR 2050804 A5 FR2050804 A5 FR 2050804A5
Authority
FR
France
Prior art keywords
moulding
thermosetting
esp
cycle control
temp
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
Application number
FR6921314A
Other languages
French (fr)
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.)
PEUGEOT and RENAULT
Renault SA
Original Assignee
PEUGEOT and RENAULT
Renault SA
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 PEUGEOT and RENAULT, Renault SA filed Critical PEUGEOT and RENAULT
Priority to FR6921314A priority Critical patent/FR2050804A5/en
Application granted granted Critical
Publication of FR2050804A5 publication Critical patent/FR2050804A5/en
Expired 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
    • B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Polyoxymethylene Polymers And Polymers With Carbon-To-Carbon Bonds (AREA)

Abstract

Control of the moulding cycles for materials which exhibit an exotherm and/or shrinkage during moulding by using a temp. transducer (11) and/or a displacement transducer to detect the cure peak for each moulding cycle and automatically initiate moulding ejection after a suitable delay. Esp. for moulding thermosetting or cross-linked materials such as rubbers or phenolic, epoxy or polyester resins, esp. glass filled compns. Minimised cycle periods with automatic adjustment for the effects of resin content, catalyst content, feedstock age, mould temp., sample thickness etc.
FR6921314A 1969-06-25 1969-06-25 Automatic cycle control for thermosetting - moulding operations Expired FR2050804A5 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR6921314A FR2050804A5 (en) 1969-06-25 1969-06-25 Automatic cycle control for thermosetting - moulding operations

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR6921314A FR2050804A5 (en) 1969-06-25 1969-06-25 Automatic cycle control for thermosetting - moulding operations

Publications (1)

Publication Number Publication Date
FR2050804A5 true FR2050804A5 (en) 1971-04-02

Family

ID=9036361

Family Applications (1)

Application Number Title Priority Date Filing Date
FR6921314A Expired FR2050804A5 (en) 1969-06-25 1969-06-25 Automatic cycle control for thermosetting - moulding operations

Country Status (1)

Country Link
FR (1) FR2050804A5 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3940465A (en) * 1973-01-03 1976-02-24 Bucher-Guyer Ag, Maschinenfabrik Method for regulating the hardening time of a plastic mass in the mold of an injection molding machine
US4131596A (en) * 1977-08-22 1978-12-26 Logic Devices, Inc. Sensing system and method for plastic injection molding

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3940465A (en) * 1973-01-03 1976-02-24 Bucher-Guyer Ag, Maschinenfabrik Method for regulating the hardening time of a plastic mass in the mold of an injection molding machine
US4131596A (en) * 1977-08-22 1978-12-26 Logic Devices, Inc. Sensing system and method for plastic injection molding

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Legal Events

Date Code Title Description
ST Notification of lapse