SG10201408412WA - Method of separating excess lens forming material from a molded ophthalmic lens, in particular a contact lens - Google Patents

Method of separating excess lens forming material from a molded ophthalmic lens, in particular a contact lens

Info

Publication number
SG10201408412WA
SG10201408412WA SG10201408412WA SG10201408412WA SG10201408412WA SG 10201408412W A SG10201408412W A SG 10201408412WA SG 10201408412W A SG10201408412W A SG 10201408412WA SG 10201408412W A SG10201408412W A SG 10201408412WA SG 10201408412W A SG10201408412W A SG 10201408412WA
Authority
SG
Singapore
Prior art keywords
lens
forming material
separating excess
molded
molded ophthalmic
Prior art date
Application number
SG10201408412WA
Inventor
Axel Heinrich
Bernhard Seiferling
Peter Hagmann
Original Assignee
Novartis 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
Application filed by Novartis Ag filed Critical Novartis Ag
Publication of SG10201408412WA publication Critical patent/SG10201408412WA/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
    • 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
    • B29C71/00—After-treatment of articles without altering their shape; Apparatus therefor
    • B29C71/0009—After-treatment of articles without altering their shape; Apparatus therefor using liquids, e.g. solvents, swelling agents
    • 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
    • B29D11/00125—Auxiliary operations, e.g. removing oxygen from the mould, conveying moulds from a storage to the production line in an inert atmosphere
    • 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
    • B29D11/00576—Moulds for lenses with means to engage flash, e.g. HEMA ring
    • B29D11/00586—Moulds for lenses with means to engage flash, e.g. HEMA ring and removing the flash or HEMA ring
    • 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
    • B29C71/00—After-treatment of articles without altering their shape; Apparatus therefor
    • B29C71/0009—After-treatment of articles without altering their shape; Apparatus therefor using liquids, e.g. solvents, swelling agents
    • B29C2071/0027—Removing undesirable residual components, e.g. solvents, unreacted monomers
    • 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
    • B29C71/00—After-treatment of articles without altering their shape; Apparatus therefor
    • B29C71/0009—After-treatment of articles without altering their shape; Apparatus therefor using liquids, e.g. solvents, swelling agents
    • B29C2071/0045—Washing using non-reactive liquids
    • 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
    • B29C37/02—Deburring or deflashing
    • 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
    • B29L2011/00—Optical elements, e.g. lenses, prisms
    • B29L2011/0016—Lenses
    • B29L2011/0041—Contact lenses

Abstract

METHOD OF SEPARATING EXCESS LENS FORMING MATERIAL FROM A MOLDED OPHTHALMIC LENS, IN PARTICULAR A CONTACT LENS There is described method a of separating excess iens forming material from a molded ophthalmic lens, in particular contact lens. After a polymerization and/or cross-linking of a lens forming material (P) within a mold cavity (4) of a mold (1) comprising female and male mold halves (2, 3) to form an ophthalmic lens non-polymerized and/or non-cross- linked lens forming material is flushed away from the mold halves (2, 3) with a jet of a fluid flushing medium, such as, e.g., water or a solvent or an inert gas. Subsequently the molded lens is dried. In accordance with the invention the flushing is accomplished with the mold halves (2, 3) still in the closed position. There is also described an apparatus for carrying out the method. FIG. 1 12
SG10201408412WA 2009-12-17 2010-12-16 Method of separating excess lens forming material from a molded ophthalmic lens, in particular a contact lens SG10201408412WA (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US28726509P 2009-12-17 2009-12-17

Publications (1)

Publication Number Publication Date
SG10201408412WA true SG10201408412WA (en) 2015-01-29

Family

ID=43736273

Family Applications (2)

Application Number Title Priority Date Filing Date
SG2012043345A SG181664A1 (en) 2009-12-17 2010-12-16 Method of separating excess lens forming material from a molded ophthalmic lens, in particular a contact lens
SG10201408412WA SG10201408412WA (en) 2009-12-17 2010-12-16 Method of separating excess lens forming material from a molded ophthalmic lens, in particular a contact lens

Family Applications Before (1)

Application Number Title Priority Date Filing Date
SG2012043345A SG181664A1 (en) 2009-12-17 2010-12-16 Method of separating excess lens forming material from a molded ophthalmic lens, in particular a contact lens

Country Status (7)

Country Link
US (2) US8673187B2 (en)
EP (1) EP2512788B1 (en)
CN (1) CN102712148B (en)
HU (1) HUE030101T2 (en)
MY (2) MY173332A (en)
SG (2) SG181664A1 (en)
WO (1) WO2011073330A1 (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104708763B (en) * 2013-12-11 2017-03-01 均豪精密工业股份有限公司 Mirror system processed and the preparation method of eyeglass
CN104608319A (en) * 2015-02-16 2015-05-13 杭州清渠科技有限公司 Preparation device and preparation method for compound lens on basis of sequential fluid injection moulding
CN106142411B (en) * 2016-06-30 2019-06-04 江苏康柏斯机械科技有限公司 A kind of molding plastic washers cooling device of thermalization
CN109803813B (en) * 2016-09-30 2022-08-09 博士伦公司 Method and apparatus for forming lenses
SG10202103739XA (en) * 2016-10-14 2021-05-28 Alcon Inc Method for producing contact lenses
GB202013420D0 (en) * 2020-08-27 2020-10-14 Ams Sensors Singapore Pte Ltd Manufacturing an optical element

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5094609A (en) * 1990-04-17 1992-03-10 Vistakon, Inc. Chamber for hydrating contact lenses
US5080839A (en) * 1990-04-17 1992-01-14 Johnson & Johnson Vision Products, Inc. Process for hydrating soft contact lenses
US5152951A (en) 1990-07-27 1992-10-06 The Uniroyal Goodrich Tire Company Vented tire mold and method for vacuum molding
US5160749A (en) * 1990-10-30 1992-11-03 Minnesota Mining And Manufacturing Company Three piece mold assembly for making an ocular device
US5316700A (en) * 1992-11-02 1994-05-31 Wesley-Jessen Corporation Method and apparatus for removing excess lens forming material
IL108992A (en) 1993-03-29 1997-11-20 Johnson & Johnson Vision Prod Solution removal nozzle
GB9520722D0 (en) 1995-10-10 1995-12-13 Award Plc Cleaning system
NZ337346A (en) 1997-03-25 2001-06-29 Novartis Ag Two-part mold comprising a crosslinked polymer formed by exposure to UV light
JP2003131174A (en) * 2001-10-25 2003-05-08 Hoya Corp Method of manufacturing lens molded goods and cleaning agent
US8899547B2 (en) * 2004-11-18 2014-12-02 Qspex Technologies, Inc. Molds and method of using the same for optical lenses

Also Published As

Publication number Publication date
CN102712148A (en) 2012-10-03
HUE030101T2 (en) 2017-04-28
MY162369A (en) 2017-06-15
US20110147959A1 (en) 2011-06-23
WO2011073330A1 (en) 2011-06-23
EP2512788B1 (en) 2016-10-26
EP2512788A1 (en) 2012-10-24
US9914272B2 (en) 2018-03-13
MY173332A (en) 2020-01-16
US8673187B2 (en) 2014-03-18
US20140199425A1 (en) 2014-07-17
SG181664A1 (en) 2012-07-30
CN102712148B (en) 2015-07-15

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