FR2266587A2 - Casting epoxide lenses - using moulds of various specific types of polymers - Google Patents

Casting epoxide lenses - using moulds of various specific types of polymers

Info

Publication number
FR2266587A2
FR2266587A2 FR7510578A FR7510578A FR2266587A2 FR 2266587 A2 FR2266587 A2 FR 2266587A2 FR 7510578 A FR7510578 A FR 7510578A FR 7510578 A FR7510578 A FR 7510578A FR 2266587 A2 FR2266587 A2 FR 2266587A2
Authority
FR
France
Prior art keywords
polymers
lenses
epoxide
moulds
casting
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
FR7510578A
Other languages
French (fr)
Other versions
FR2266587B2 (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.)
Deutsche Spiegelglas AG
Original Assignee
Deutsche Spiegelglas AG
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 DE19742416830 external-priority patent/DE2416830C3/en
Application filed by Deutsche Spiegelglas AG filed Critical Deutsche Spiegelglas AG
Publication of FR2266587A2 publication Critical patent/FR2266587A2/en
Application granted granted Critical
Publication of FR2266587B2 publication Critical patent/FR2266587B2/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
    • B29D11/00—Producing optical elements, e.g. lenses or prisms
    • B29D11/00009—Production of simple or compound lenses
    • B29D11/0048—Moulds for lenses
    • B29D11/00528—Consisting of two mould halves joined by an annular gasket
    • 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
    • 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
    • B29D11/00—Producing optical elements, e.g. lenses or prisms
    • B29D11/00009—Production of simple or compound lenses
    • B29D11/00413—Production of simple or compound lenses made by moulding between two mould parts which are not in direct contact with one another, e.g. comprising a seal between or on the edges

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Mechanical Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • Ophthalmology & Optometry (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)
  • Casting Or Compression Moulding Of Plastics Or The Like (AREA)

Abstract

In the Parent Patent, mould tools for casting polymers, partic. optical lenses, are produced by injection moulding with optical quality moulds to an optical quality surface pref. of glass ceramic. In the patent of addn. epoxide lenses are produced from mould tools of polyacetals, polyamides, polyolefins e. g. polypropylenes, polytetra-methylene terephthalate or polyesters, and partic. polyphenylene oxide, polythenes or polyfluorocarbons or polymers with at least 2% polyfluorocarbon content. No release agent is required, high lens prodn. is possible by injection moulding, the mould material can be ground down and remade when it is worn out.
FR7510578A 1974-04-06 1975-04-04 Casting epoxide lenses - using moulds of various specific types of polymers Granted FR2266587A2 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19742416830 DE2416830C3 (en) 1974-04-06 Casting mold for the production of plastic lenses with an optical surface quality

Publications (2)

Publication Number Publication Date
FR2266587A2 true FR2266587A2 (en) 1975-10-31
FR2266587B2 FR2266587B2 (en) 1978-11-03

Family

ID=5912346

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7510578A Granted FR2266587A2 (en) 1974-04-06 1975-04-04 Casting epoxide lenses - using moulds of various specific types of polymers

Country Status (1)

Country Link
FR (1) FR2266587A2 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0057482A2 (en) * 1981-02-04 1982-08-11 Hendrik Bouwhuis Method and device for producing a series of carrying boards to be used in the production of bricks
EP0560011A1 (en) * 1992-03-12 1993-09-15 Hüls Aktiengesellschaft Mold for manufacturing latex foam

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0057482A2 (en) * 1981-02-04 1982-08-11 Hendrik Bouwhuis Method and device for producing a series of carrying boards to be used in the production of bricks
WO1982002698A1 (en) * 1981-02-04 1982-08-19 Hendrik Bouwhuis Mould for shaping synthetic material and mould,device and method for renovating a carrying board
EP0057482A3 (en) * 1981-02-04 1982-08-25 Hendrik Bouwhuis Mould for moulding synthetic material and mould, device and method of manufacturing and/or renovating a carrying board
US4496304A (en) * 1981-02-04 1985-01-29 Hendrik Bouwhuis Mould for shaping synthetic material and mould for renovating a carrying board
EP0560011A1 (en) * 1992-03-12 1993-09-15 Hüls Aktiengesellschaft Mold for manufacturing latex foam
US5397225A (en) * 1992-03-12 1995-03-14 Huels Aktiengesellschaft Mold for the production of latex foam articles

Also Published As

Publication number Publication date
DE2416830A1 (en) 1975-10-16
FR2266587B2 (en) 1978-11-03
DE2416830B2 (en) 1976-07-29

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