FR2024655A5 - Moulding gramophone record by injection followed by - Google Patents

Moulding gramophone record by injection followed by

Info

Publication number
FR2024655A5
FR2024655A5 FR6933372A FR6933372A FR2024655A5 FR 2024655 A5 FR2024655 A5 FR 2024655A5 FR 6933372 A FR6933372 A FR 6933372A FR 6933372 A FR6933372 A FR 6933372A FR 2024655 A5 FR2024655 A5 FR 2024655A5
Authority
FR
France
Prior art keywords
gramophone record
moulding
record
injection followed
central portion
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
FR6933372A
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.)
Nippon Columbia Co Ltd
Original Assignee
Nippon Columbia Co 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
Application filed by Nippon Columbia Co Ltd filed Critical Nippon Columbia Co Ltd
Priority to FR6933372A priority Critical patent/FR2024655A5/en
Application granted granted Critical
Publication of FR2024655A5 publication Critical patent/FR2024655A5/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
    • 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
    • B29C45/32—Moulds having several axially spaced mould cavities, i.e. for making several separated articles

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Mechanical Engineering (AREA)
  • Pens And Brushes (AREA)

Abstract

Gramophone record is moulded in PVC-based mix with a thicker central portion, equal to the thickness of the labelled part. The central portion is then pressed between heated rings, compressing the section under the rings to the required thickness. The hole is then punched. Alternatively the centre section may be thinned by machining. More easy production than moulding to the usual varying thicknesses required on a record.
FR6933372A 1969-09-30 1969-09-30 Moulding gramophone record by injection followed by Expired FR2024655A5 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR6933372A FR2024655A5 (en) 1969-09-30 1969-09-30 Moulding gramophone record by injection followed by

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR6933372A FR2024655A5 (en) 1969-09-30 1969-09-30 Moulding gramophone record by injection followed by

Publications (1)

Publication Number Publication Date
FR2024655A5 true FR2024655A5 (en) 1970-08-28

Family

ID=9040844

Family Applications (1)

Application Number Title Priority Date Filing Date
FR6933372A Expired FR2024655A5 (en) 1969-09-30 1969-09-30 Moulding gramophone record by injection followed by

Country Status (1)

Country Link
FR (1) FR2024655A5 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0310905A1 (en) * 1987-09-29 1989-04-12 Engel Maschinenbau Gesellschaft m.b.H. Method of controlling an injection moulding machine and injection moulding machine for executing this method

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0310905A1 (en) * 1987-09-29 1989-04-12 Engel Maschinenbau Gesellschaft m.b.H. Method of controlling an injection moulding machine and injection moulding machine for executing this method
AT390029B (en) * 1987-09-29 1990-03-12 Engel Gmbh Maschbau INJECTION MOLDING MACHINE

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Legal Events

Date Code Title Description
ST Notification of lapse