FR2039980A5 - Gramophone record mould - Google Patents

Gramophone record mould

Info

Publication number
FR2039980A5
FR2039980A5 FR7010755A FR7010755A FR2039980A5 FR 2039980 A5 FR2039980 A5 FR 2039980A5 FR 7010755 A FR7010755 A FR 7010755A FR 7010755 A FR7010755 A FR 7010755A FR 2039980 A5 FR2039980 A5 FR 2039980A5
Authority
FR
France
Prior art keywords
mould
cavity
gramophone record
record mould
bore over
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
FR7010755A
Other languages
English (en)
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.)
EMI Ltd
Electrical and Musical Industries Ltd
Original Assignee
EMI Ltd
Electrical and Musical Industries 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
Priority claimed from GB62991/69A external-priority patent/GB1301095A/en
Application filed by EMI Ltd, Electrical and Musical Industries Ltd filed Critical EMI Ltd
Application granted granted Critical
Publication of FR2039980A5 publication Critical patent/FR2039980A5/fr
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
    • B29C45/263—Moulds with mould wall parts provided with fine grooves or impressions, e.g. for record discs
    • 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
    • B29C45/27—Sprue channels ; Runner channels or runner nozzles
    • 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
    • B29C45/40—Removing or ejecting moulded articles
    • B29C45/43—Removing or ejecting moulded articles using fluid under pressure
    • 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
    • B29L2017/00—Carriers for sound or information
    • B29L2017/001—Carriers of records containing fine grooves or impressions, e.g. disc records for needle playback, cylinder records
    • B29L2017/003—Records or discs

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Mechanical Engineering (AREA)
  • Injection Moulding Of Plastics Or The Like (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)
  • Casting Or Compression Moulding Of Plastics Or The Like (AREA)
FR7010755A 1969-03-26 1970-03-25 Gramophone record mould Expired FR2039980A5 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB62991/69A GB1301095A (en) 1969-03-26 1969-03-26 Improvements in or relating to the production of gramophone records
GB1570069 1969-03-26

Publications (1)

Publication Number Publication Date
FR2039980A5 true FR2039980A5 (en) 1971-01-15

Family

ID=26251481

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7010755A Expired FR2039980A5 (en) 1969-03-26 1970-03-25 Gramophone record mould

Country Status (4)

Country Link
JP (1) JPS4836179B1 (enrdf_load_stackoverflow)
DE (1) DE2014311A1 (enrdf_load_stackoverflow)
FR (1) FR2039980A5 (enrdf_load_stackoverflow)
NL (1) NL7003886A (enrdf_load_stackoverflow)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0047645A1 (en) * 1980-09-05 1982-03-17 Matsushita Electric Industrial Co., Ltd. A method of producing an information recording disk
EP0051253A3 (en) * 1980-10-31 1983-04-06 Discovision Associates Hot sprue valve assembly for an injection molding machine
EP0051252A3 (en) * 1980-10-31 1983-04-20 Discovision Associates Hot sprue valve assembly for an injection molding machine
US4405540A (en) 1980-10-31 1983-09-20 Discovision Associates Hot sprue valve assembly for an injection molding machine
US4466934A (en) * 1980-10-31 1984-08-21 Discovision Associates Hot sprue valve assembly for an injection molding machine

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0247244B1 (en) * 1986-02-26 1992-01-15 Kabushiki Kaisha Meiki Seisakusho Improved molding apparatus and method for producing centrally-apertured discs

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0047645A1 (en) * 1980-09-05 1982-03-17 Matsushita Electric Industrial Co., Ltd. A method of producing an information recording disk
US4472124A (en) * 1980-09-05 1984-09-18 Matsushita Electric Industrial Co., Limited Device for producing an information recording disk
EP0051253A3 (en) * 1980-10-31 1983-04-06 Discovision Associates Hot sprue valve assembly for an injection molding machine
EP0051252A3 (en) * 1980-10-31 1983-04-20 Discovision Associates Hot sprue valve assembly for an injection molding machine
US4405540A (en) 1980-10-31 1983-09-20 Discovision Associates Hot sprue valve assembly for an injection molding machine
US4466934A (en) * 1980-10-31 1984-08-21 Discovision Associates Hot sprue valve assembly for an injection molding machine

Also Published As

Publication number Publication date
JPS4836179B1 (enrdf_load_stackoverflow) 1973-11-01
DE2014311A1 (enrdf_load_stackoverflow) 1970-10-15
NL7003886A (enrdf_load_stackoverflow) 1970-09-29

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Legal Events

Date Code Title Description
CD Change of name or company name
ST Notification of lapse