ZA949862B - Process and apparatus for the manufacture of a contact lens - Google Patents

Process and apparatus for the manufacture of a contact lens

Info

Publication number
ZA949862B
ZA949862B ZA949862A ZA949862A ZA949862B ZA 949862 B ZA949862 B ZA 949862B ZA 949862 A ZA949862 A ZA 949862A ZA 949862 A ZA949862 A ZA 949862A ZA 949862 B ZA949862 B ZA 949862B
Authority
ZA
South Africa
Prior art keywords
mould
contact lens
contact
manufacture
lens
Prior art date
Application number
ZA949862A
Inventor
Karlheinz Honeberger
Lothar Haase
Horst Schaefer
Werner Steffan
Peter Zang
Original Assignee
Ciba Geigy
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=8215087&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=ZA949862(B) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Ciba Geigy filed Critical Ciba Geigy
Publication of ZA949862B publication Critical patent/ZA949862B/en

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
    • B29C33/00—Moulds or cores; Details thereof or accessories therefor
    • B29C33/44—Moulds or cores; Details thereof or accessories therefor with means for, or specially constructed to facilitate, the removal of articles, e.g. of undercut articles
    • 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
    • B29C37/00—Component parts, details, accessories or auxiliary operations, not covered by group B29C33/00 or B29C35/00
    • B29C37/0003—Discharging moulded articles from the mould
    • 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
    • B29C59/00—Surface shaping of articles, e.g. embossing; Apparatus therefor
    • B29C59/10—Surface shaping of articles, e.g. embossing; Apparatus therefor by electric discharge treatment
    • 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
    • B29D11/00038—Production of contact lenses
    • B29D11/00057—Production of contact lenses characterised by the shape or surface condition of the edge, e.g. flashless, burrless, smooth
    • 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
    • B29L2031/757—Moulds, cores, dies

Abstract

In a process for the production of contact lenses, polymerisable contact-lens material is dispensed into one mould half (1) and subsequently the mould is closed by mean of the second mould half (2). The material located in the mould cavity (12) between the two mould halves is subsequently polymerised and thus a still unhydrated contact lens (CL) is formed. The moulding surface of one of the two mould halves (1,2) is pretreated before its use in a region (20) outside the optically effective zone of the contact lens (CL) in such a way that the contact lens (CL) adheres to the pretreated mould half when the mould is opened. <IMAGE>
ZA949862A 1993-12-13 1994-12-12 Process and apparatus for the manufacture of a contact lens ZA949862B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP93810872 1993-12-13

Publications (1)

Publication Number Publication Date
ZA949862B true ZA949862B (en) 1995-06-14

Family

ID=8215087

Family Applications (1)

Application Number Title Priority Date Filing Date
ZA949862A ZA949862B (en) 1993-12-13 1994-12-12 Process and apparatus for the manufacture of a contact lens

Country Status (15)

Country Link
EP (1) EP0657264B1 (en)
JP (1) JP3110268B2 (en)
CN (1) CN1110212A (en)
AT (1) ATE182287T1 (en)
AU (1) AU694145B2 (en)
CA (1) CA2137765A1 (en)
DE (1) DE59408513D1 (en)
DK (1) DK0657264T3 (en)
ES (1) ES2136721T3 (en)
FI (1) FI945797A (en)
GR (1) GR3031552T3 (en)
IL (1) IL111873A (en)
NO (1) NO944807L (en)
NZ (1) NZ270119A (en)
ZA (1) ZA949862B (en)

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19727671C2 (en) * 1997-06-30 2000-04-13 Woehlk Contact Linsen Gmbh Device for producing molded articles from a polymerizable mixture
JP4544710B2 (en) 1999-08-27 2010-09-15 株式会社メニコン Mold for ophthalmic lens article and method for producing ophthalmic lens article
DE602005006996D1 (en) * 2004-03-24 2008-07-03 Novartis Ag PROCESS FOR THE PRODUCTION OF CONTACT LENSES
MY161660A (en) * 2005-05-04 2017-04-28 Novartis Ag Automated inspection of colored contact lenses
US7320587B2 (en) * 2005-08-09 2008-01-22 Cooper Vision, Inc. Contact lens molds and systems and methods for producing same
JP4335225B2 (en) * 2006-04-19 2009-09-30 株式会社日本製鋼所 Method and apparatus for manufacturing resin molded body
US7875217B2 (en) * 2006-09-29 2011-01-25 Johnson & Johnson Vision Care, Inc. Excess polymer ring removal during ophthalmic lens manufacture
TW200918294A (en) * 2007-10-17 2009-05-01 Unicon Optical Co Ltd Method and die for forming contact lens
JP5621117B2 (en) * 2012-06-19 2014-11-05 株式会社メニコンネクト Multilayer contact lens and manufacturing method thereof
WO2015001584A1 (en) * 2013-07-02 2015-01-08 株式会社メニコン Contact lens and method for manufacturing contact lens
US20170165050A1 (en) * 2014-02-11 2017-06-15 The Manchester Metropolitan University Artificial eyes and manufacture thereof
US10611107B2 (en) * 2015-12-22 2020-04-07 Alcon Inc. Process for manufacturing contact lenses
CN109803815B (en) 2016-10-14 2021-06-11 爱尔康公司 Method for manufacturing contact lenses

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1074480B (en) * 1953-12-02 1960-01-28 Rieter Werke Dipl Ing Walter Handle K G Konstanz (Bodensee) Device for releasing pressed molded bodies made of plastic ceramic masses from emer metal mold
FR1497746A (en) * 1965-10-21 1967-10-13 Continental Can Co Electrostatic casting process and apparatus
US4257755A (en) * 1974-06-25 1981-03-24 Lemelson Jerome H Molding system and method
GB8601967D0 (en) * 1986-01-28 1986-03-05 Coopervision Optics Manufacturing contact lenses
AU633749B2 (en) * 1990-08-02 1993-02-04 Novartis Ag Contact lens casting
US5294379A (en) * 1992-09-18 1994-03-15 Johnson & Johnson Vision Products, Inc. Laser assisted demolding of ophthalmic lenses
US5326505A (en) * 1992-12-21 1994-07-05 Johnson & Johnson Vision Products, Inc. Method for treating an ophthalmic lens mold

Also Published As

Publication number Publication date
JPH07195558A (en) 1995-08-01
EP0657264A1 (en) 1995-06-14
ATE182287T1 (en) 1999-08-15
CA2137765A1 (en) 1995-06-14
NO944807D0 (en) 1994-12-12
IL111873A0 (en) 1995-03-15
AU8037394A (en) 1995-06-22
DE59408513D1 (en) 1999-08-26
FI945797A (en) 1995-06-14
AU694145B2 (en) 1998-07-16
ES2136721T3 (en) 1999-12-01
DK0657264T3 (en) 2000-02-07
GR3031552T3 (en) 2000-01-31
EP0657264B1 (en) 1999-07-21
FI945797A0 (en) 1994-12-09
JP3110268B2 (en) 2000-11-20
CN1110212A (en) 1995-10-18
IL111873A (en) 1997-06-10
NZ270119A (en) 1996-06-25
NO944807L (en) 1995-06-14

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