FI943375A - Method and apparatus for making molds and molds manufactured according to the method - Google Patents

Method and apparatus for making molds and molds manufactured according to the method Download PDF

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Publication number
FI943375A
FI943375A FI943375A FI943375A FI943375A FI 943375 A FI943375 A FI 943375A FI 943375 A FI943375 A FI 943375A FI 943375 A FI943375 A FI 943375A FI 943375 A FI943375 A FI 943375A
Authority
FI
Finland
Prior art keywords
mould
cavity
molds
exposure
crosslinked
Prior art date
Application number
FI943375A
Other languages
Finnish (fi)
Swedish (sv)
Other versions
FI943375A0 (en
FI105792B (en
Inventor
Peter Hagmann
Sharla Borghorst
John Golby
Peter Herbrechtsmeier
Otto Kretzschmar
Bernhard Seiferling
Norbert Soellner
Beat Mueller
Original Assignee
Ciba Geigy 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 Ciba Geigy Ag filed Critical Ciba Geigy Ag
Publication of FI943375A0 publication Critical patent/FI943375A0/en
Publication of FI943375A publication Critical patent/FI943375A/en
Application granted granted Critical
Publication of FI105792B publication Critical patent/FI105792B/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
    • 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
    • B29C31/00—Handling, e.g. feeding of the material to be shaped, storage of plastics material before moulding; Automation, i.e. automated handling lines in plastics processing plants, e.g. using manipulators or robots
    • B29C31/04—Feeding of the material to be moulded, e.g. into a mould cavity
    • B29C31/041—Feeding of the material to be moulded, e.g. into a mould cavity using filling or dispensing heads placed in closed moulds or in contact with mould walls
    • 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
    • B29C33/02—Moulds or cores; Details thereof or accessories therefor with incorporated heating or cooling means
    • B29C33/06—Moulds or cores; Details thereof or accessories therefor with incorporated heating or cooling means using radiation, e.g. electro-magnetic waves, induction heating
    • 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
    • B29C35/00—Heating, cooling or curing, e.g. crosslinking or vulcanising; Apparatus therefor
    • B29C35/02—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould
    • B29C35/08—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould by wave energy or particle radiation
    • B29C35/0888—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould by wave energy or particle radiation using transparant moulds
    • B29C35/0894—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould by wave energy or particle radiation using transparant moulds provided with masks or diaphragms
    • 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
    • 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
    • B29C37/0007—Discharging moulded articles from the mould using means operable from outside the mould for moving between mould parts, e.g. robots
    • 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
    • B29C37/005—Compensating volume or shape change during moulding, in general
    • 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
    • B29C39/00—Shaping by casting, i.e. introducing the moulding material into a mould or between confining surfaces without significant moulding pressure; Apparatus therefor
    • B29C39/22—Component parts, details or accessories; Auxiliary operations
    • B29C39/24—Feeding the material into 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
    • B29C39/00—Shaping by casting, i.e. introducing the moulding material into a mould or between confining surfaces without significant moulding pressure; Apparatus therefor
    • B29C39/22—Component parts, details or accessories; Auxiliary operations
    • B29C39/36—Removing moulded 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
    • B29C39/00—Shaping by casting, i.e. introducing the moulding material into a mould or between confining surfaces without significant moulding pressure; Apparatus therefor
    • B29C39/22—Component parts, details or accessories; Auxiliary operations
    • B29C39/42—Casting under special conditions, e.g. vacuum
    • 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
    • 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
    • B29D11/00134—Curing of the contact lens material
    • 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
    • B29D11/00432—Auxiliary operations, e.g. machines for filling the moulds
    • B29D11/00442—Curing the lens material
    • 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
    • B29C35/00—Heating, cooling or curing, e.g. crosslinking or vulcanising; Apparatus therefor
    • B29C35/02—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould
    • B29C35/08—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould by wave energy or particle radiation
    • B29C35/0805—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould by wave energy or particle radiation using electromagnetic radiation
    • B29C2035/0827—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould by wave energy or particle radiation using electromagnetic radiation using UV radiation
    • 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
    • B29C33/30—Mounting, exchanging or centering
    • B29C33/303—Mounting, exchanging or centering centering mould parts or halves, e.g. during mounting
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Ophthalmology & Optometry (AREA)
  • Robotics (AREA)
  • Toxicology (AREA)
  • Physics & Mathematics (AREA)
  • Oral & Maxillofacial Surgery (AREA)
  • Thermal Sciences (AREA)
  • Eyeglasses (AREA)
  • Casting Or Compression Moulding Of Plastics Or The Like (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)
  • Heating, Cooling, Or Curing Plastics Or The Like In General (AREA)
  • Diaphragms For Electromechanical Transducers (AREA)
  • Joining Of Glass To Other Materials (AREA)
  • Ceramic Products (AREA)
  • Transition And Organic Metals Composition Catalysts For Addition Polymerization (AREA)
  • Separation Using Semi-Permeable Membranes (AREA)
  • Processing Of Solid Wastes (AREA)
  • Manufacture Or Reproduction Of Printing Formes (AREA)
  • Vehicle Interior And Exterior Ornaments, Soundproofing, And Insulation (AREA)
  • Encapsulation Of And Coatings For Semiconductor Or Solid State Devices (AREA)

Abstract

A measured-out quantity of a material which can be crosslinked by exposure to a suitable form of energy, in particular UV light (3), is introduced into a two-part mould (1), the cavity (15) of which defines the shape of a moulded part (CL) to be produced. The two mould halves (11, 12) are kept at a small distance from each other, so that there is formed between them a thin annular gap (16), which is in connection with the mould cavity (15) and through which excess material can escape. The crosslinkage is initiated by exposure to the chosen form of energy, exposure being spatially limited to the cavity (15) by suitable masking (21), so that material outside the mould cavity is not crosslinked. In this way, moulded parts which do not require secondary finishing are obtained, and the mould is reusable. The process is suitable in particular, but not exclusively, for the production of contact lenses. <IMAGE>
FI943375A 1993-07-19 1994-07-15 Method and device for manufacturing contact lenses FI105792B (en)

Applications Claiming Priority (6)

Application Number Priority Date Filing Date Title
EP93810515 1993-07-19
EP93810515 1993-07-19
CH229993 1993-07-29
CH229993 1993-07-29
CH235093 1993-08-06
CH235093 1993-08-06

Publications (3)

Publication Number Publication Date
FI943375A0 FI943375A0 (en) 1994-07-15
FI943375A true FI943375A (en) 1995-01-20
FI105792B FI105792B (en) 2000-10-13

Family

ID=27173603

Family Applications (1)

Application Number Title Priority Date Filing Date
FI943375A FI105792B (en) 1993-07-19 1994-07-15 Method and device for manufacturing contact lenses

Country Status (19)

Country Link
EP (1) EP0637490B1 (en)
JP (1) JP3257903B2 (en)
KR (1) KR100324881B1 (en)
CN (1) CN1058658C (en)
AT (1) ATE178255T1 (en)
AU (1) AU682365B2 (en)
CA (1) CA2128158C (en)
CZ (1) CZ288697B6 (en)
DE (1) DE59408026D1 (en)
DK (1) DK0637490T3 (en)
ES (1) ES2130384T3 (en)
FI (1) FI105792B (en)
GR (1) GR3030516T3 (en)
HU (1) HU216616B (en)
IL (1) IL110281A (en)
NO (1) NO310760B1 (en)
NZ (1) NZ264031A (en)
PL (1) PL304314A1 (en)
SG (1) SG49612A1 (en)

Families Citing this family (45)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
PT807017E (en) * 1995-02-02 2000-04-28 Novartis Ag PROCESS FOR THE MANUFACTURE OF MOLDED ARTICLES WHICH ARE PARTIALLY COLORED OR WHICH HAVE DIFFERENT COLOR AREAS
TW360671B (en) * 1995-02-03 1999-06-11 Novartis Ag Process for producing mold body and the cross-linkable polymer used therein
TW349967B (en) * 1995-02-03 1999-01-11 Novartis Ag Process for producing contact lenses and a cross-linkable polyvinylalcohol used therefor
AU4438696A (en) * 1995-02-03 1996-08-21 Novartis Ag Crosslinked polymers
WO1997017182A1 (en) * 1995-11-09 1997-05-15 Ucb, S.A. Method for producing an optical article using visible light radiation
TW448205B (en) * 1996-05-23 2001-08-01 Novartis Ag Process for the manufacture of storage-stable hydrogel-moldings
EP0921922A1 (en) * 1996-07-24 1999-06-16 Novartis AG Process for producing mouldings
KR20000053099A (en) * 1996-11-06 2000-08-25 스티븐 에이. 헬렁 Method and apparatus for separating contact lens mold sections
DE19706846A1 (en) * 1997-02-21 1998-09-03 Bodenseewerk Geraetetech Device for light-initiated chemical crosslinking of material
US6113817A (en) * 1997-03-25 2000-09-05 Novartis Ag Molding processes
WO1998042497A2 (en) * 1997-03-25 1998-10-01 Novartis Ag Molding processes
DE19717014A1 (en) * 1997-04-23 1998-10-29 Inst Mikrotechnik Mainz Gmbh Process and mold for the production of miniaturized moldings
JP2002501626A (en) * 1997-05-27 2002-01-15 ノバルティス アクチエンゲゼルシャフト Compound eye lens
TW429327B (en) 1997-10-21 2001-04-11 Novartis Ag Single mould alignment
AR024539A1 (en) * 1999-03-31 2002-10-16 Novartis Ag MOLD FOR OPTIONAL LENS AND MOLDING METHOD BY INJECTION OF A MOLD FOR OPTIONAL LENS.
US6997428B1 (en) 1999-03-31 2006-02-14 Novartis Ag Contact lens mold
DE60010904T2 (en) * 1999-06-25 2005-05-25 Novartis Ag UV ILLUMINATION DEVICE
GB2355686A (en) * 1999-10-25 2001-05-02 Hydron Ltd A method of forming an ophthalmic device
US6368522B1 (en) * 2000-01-03 2002-04-09 Johnson & Johnson Vision Care, Inc. Mold for forming a contact lens and method of preventing formation of small strands of contact lens material during contact lens manufacture
US6558584B1 (en) 2000-03-31 2003-05-06 Bausch & Lomb Incorporated Apparatus and method for handling an ophthalmic lens
US6737661B2 (en) * 2000-08-17 2004-05-18 Novartis Ag Pre-treatment of molds
ATE526135T1 (en) 2001-03-26 2011-10-15 Novartis Ag MOLD AND METHOD FOR PRODUCING OPTHALMIC LENSES
US20030031548A1 (en) * 2001-08-09 2003-02-13 Parell Phillip King Rigid vacuum tip
US6997693B2 (en) * 2001-10-19 2006-02-14 Novartis Ag Casting mold half and casting mold for producing contact lenses
ES2350933T3 (en) 2003-08-07 2011-01-28 Eyesense Ag OPHTHALM SENSOR
US20050056954A1 (en) * 2003-09-12 2005-03-17 Devlin Brian Gerrard Method for making contact lenses
DE102004010648B4 (en) 2004-02-26 2008-12-04 Jenoptik Laser, Optik, Systeme Gmbh Radiation-permeable mold half for a mold
US8003024B2 (en) * 2006-09-18 2011-08-23 Coopervision International Holding Company, Lp Polyolefin contact lens molds and uses thereof
WO2008133864A2 (en) 2007-04-23 2008-11-06 Tessera North America, Inc. Mass production of micro-optical devices, corresponding tools, and resultant structures
DE102007024642A1 (en) 2007-05-24 2008-11-27 Eyesense Ag Hydrogel implant for sensor of metabolites on the eye
CA2704018C (en) * 2007-12-20 2016-01-19 Novartis Ag Method for making contact lenses
CN103313843B (en) * 2010-11-26 2017-03-22 日柔有限公司 contact lens manufacturing method
CN103465410B (en) * 2012-06-06 2015-12-09 视霸光学股份有限公司 Ultrasonic stripper apparatus and be applied to and manufacture the method for contact lenses
DE102013207243B4 (en) * 2013-04-22 2019-10-02 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. DEVICE AND METHOD FOR PRODUCING A STRUCTURE OF CURABLE MATERIAL BY IMPREGNATION
DE102013220097B4 (en) * 2013-10-02 2017-05-11 Smp Deutschland Gmbh Forming tool and forming process for this purpose
JP6380913B2 (en) * 2013-11-14 2018-08-29 コニカミノルタ株式会社 Optical element manufacturing method
EP3083215B1 (en) * 2013-12-20 2021-04-07 Alcon Inc. Reusable castings molds and method of making such molds
CN105204180B (en) * 2015-09-23 2018-01-26 江苏视客光学眼镜有限公司 The manufacture method and device of compound spectacle glass
MY189914A (en) * 2015-12-17 2022-03-21 Alcon Inc Reusable lens molds and methods of use thereof
KR101825078B1 (en) * 2016-05-09 2018-02-02 (주)티이바이오스 Mold for manufacturing artificial cornea and method of manufacturing artificial cornea using the same
FR3051136A1 (en) * 2016-05-10 2017-11-17 Roctool METHOD AND DEVICE FOR HEATING A MOLD
US11009661B2 (en) * 2018-10-16 2021-05-18 Magic Leap, Inc. Methods and apparatuses for casting polymer products
CN111483099B (en) * 2019-01-25 2022-05-10 优你康光学股份有限公司 Mold for demolding contact lenses and method thereof
CN109895311B (en) * 2019-04-19 2021-03-02 浙江宝祥工贸有限公司 Cylindrical forming die
CN110435057A (en) * 2019-08-20 2019-11-12 瑞声科技(新加坡)有限公司 For forming the mold of wafer eyeglass

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US4113224A (en) * 1975-04-08 1978-09-12 Bausch & Lomb Incorporated Apparatus for forming optical lenses
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EP0484015B1 (en) * 1990-10-30 1995-09-27 Minnesota Mining And Manufacturing Company Method for curing ocular devices

Also Published As

Publication number Publication date
NZ264031A (en) 1996-03-26
GR3030516T3 (en) 1999-10-29
AU6753894A (en) 1995-01-27
KR100324881B1 (en) 2002-10-25
SG49612A1 (en) 2003-03-18
EP0637490B1 (en) 1999-03-31
CZ288697B6 (en) 2001-08-15
JPH0768563A (en) 1995-03-14
FI943375A0 (en) 1994-07-15
HU216616B (en) 1999-07-28
CN1108999A (en) 1995-09-27
IL110281A0 (en) 1994-10-21
CA2128158A1 (en) 1995-01-20
NO942691D0 (en) 1994-07-18
EP0637490A1 (en) 1995-02-08
NO942691L (en) 1995-01-20
ES2130384T3 (en) 1999-07-01
CA2128158C (en) 1999-01-19
HUT69316A (en) 1995-09-28
DE59408026D1 (en) 1999-05-06
ATE178255T1 (en) 1999-04-15
CN1058658C (en) 2000-11-22
KR950002966A (en) 1995-02-16
FI105792B (en) 2000-10-13
PL304314A1 (en) 1995-01-23
JP3257903B2 (en) 2002-02-18
CZ172694A3 (en) 1995-11-15
IL110281A (en) 1998-10-30
NO310760B1 (en) 2001-08-27
HU9402122D0 (en) 1994-09-28
AU682365B2 (en) 1997-10-02
DK0637490T3 (en) 1999-10-11

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Owner name: NOVARTIS AG

MA Patent expired