BE753439A - SIMULTANEOUS PLATE MOLDING PROCESS OF SEVERAL OBJECTS, MORE PARTICULARLY OPHTHALMIC LENSES IN PLASTIC MATERIAL - Google Patents

SIMULTANEOUS PLATE MOLDING PROCESS OF SEVERAL OBJECTS, MORE PARTICULARLY OPHTHALMIC LENSES IN PLASTIC MATERIAL

Info

Publication number
BE753439A
BE753439A BE753439DA BE753439A BE 753439 A BE753439 A BE 753439A BE 753439D A BE753439D A BE 753439DA BE 753439 A BE753439 A BE 753439A
Authority
BE
Belgium
Prior art keywords
plastic material
molding process
ophthalmic lenses
several objects
plate molding
Prior art date
Application number
Other languages
French (fr)
Inventor
J O Beattie
Original Assignee
J O Beattie Lab Inc
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 J O Beattie Lab Inc filed Critical J O Beattie Lab Inc
Publication of BE753439A publication Critical patent/BE753439A/en

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
    • B29D11/00413—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
    • 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
    • B29C33/0022—Multi-cavity moulds
    • 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
    • B29C33/0038—Moulds or cores; Details thereof or accessories therefor with sealing means or the like
    • 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
    • B29D11/00028—Bifocal lenses; Multifocal lenses
    • 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
    • B29L2031/00—Other particular articles
    • B29L2031/76—Office equipment or accessories
    • B29L2031/7602—Maps
BE753439D 1969-07-15 1970-07-14 SIMULTANEOUS PLATE MOLDING PROCESS OF SEVERAL OBJECTS, MORE PARTICULARLY OPHTHALMIC LENSES IN PLASTIC MATERIAL BE753439A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US84192669A 1969-07-15 1969-07-15

Publications (1)

Publication Number Publication Date
BE753439A true BE753439A (en) 1971-01-14

Family

ID=25286071

Family Applications (1)

Application Number Title Priority Date Filing Date
BE753439D BE753439A (en) 1969-07-15 1970-07-14 SIMULTANEOUS PLATE MOLDING PROCESS OF SEVERAL OBJECTS, MORE PARTICULARLY OPHTHALMIC LENSES IN PLASTIC MATERIAL

Country Status (4)

Country Link
BE (1) BE753439A (en)
DE (1) DE2029120A1 (en)
FR (1) FR2055089A5 (en)
GB (1) GB1317007A (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE68923345T2 (en) * 1988-11-02 1995-12-21 British Tech Group Pouring contact lenses.
US5573108A (en) * 1988-11-02 1996-11-12 British Technology Group Ltd. Disposable contact lens package

Also Published As

Publication number Publication date
GB1317007A (en) 1973-05-16
FR2055089A5 (en) 1971-05-07
DE2029120A1 (en) 1971-01-28

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