JPS50151966A - - Google Patents
Info
- Publication number
- JPS50151966A JPS50151966A JP50053277A JP5327775A JPS50151966A JP S50151966 A JPS50151966 A JP S50151966A JP 50053277 A JP50053277 A JP 50053277A JP 5327775 A JP5327775 A JP 5327775A JP S50151966 A JPS50151966 A JP S50151966A
- Authority
- JP
- Japan
- Prior art keywords
- reservoir
- polymerization
- cavity
- mould
- moulding
- 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
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
- B29C33/30—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
- 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
- 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
- B29C37/005—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
- B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
- B29C43/02—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor of articles of definite length, i.e. discrete articles
- B29C43/021—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor of articles of definite length, i.e. discrete articles characterised by the shape of the surface
-
- 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
- B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
- B29C43/32—Component parts, details or accessories; Auxiliary operations
- B29C43/36—Moulds for making articles of definite length, i.e. discrete articles
- B29C43/38—Moulds for making articles of definite length, i.e. discrete articles with means to avoid flashes
-
- 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
- B29D11/00432—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
- B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
- B29D11/00—Producing optical elements, e.g. lenses or prisms
- B29D11/00932—Combined cutting and grinding thereof
- B29D11/00942—Combined cutting and grinding thereof where the lens material is mounted in a support for mounting onto a cutting device, e.g. a lathe, and where the support is of machinable material, e.g. plastics
-
- 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
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2105/00—Condition, form or state of moulded material or of the material to be shaped
- B29K2105/0002—Condition, form or state of moulded material or of the material to be shaped monomers or prepolymers
-
- 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
-
- 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
Abstract
1511901 Moulding lenses BAUSCH & LOMB Inc 18 April 1975 [6 May 1974 8 April 1975] 16228/75 Heading B5A In the casting of lenses from material which changes volume on polymerization using a mould having a reservoir connected through a restriction to the moulding cavity, the mould cavity is completely filled and the reservoir at least partly filled with the polymerizable material, and the mould parts are configured to produce axial and/or radial alignment thereof. Preferably polymerization is inhibited in the reservoir during polymerization in the mould cavity so that material may pass to or from the cavity to compensate for any change in volume. In Fig. 3 a male member 13 is brought into contact with projections 131 on a female member 115 containing polymerizable material, thereby forming a mould cavity 133 and displacing excess material into an annular reservoir 135. The spaces between the projections 131 form part annular restrictions through which material can pass. The members 13 and 115 are made of glass to facilitate polymerization by U.V. irradiation through either of them. An annular shield 141 is used initially so that the centre is polymerized first, and finally the flash in the reservoir is polymerized. With certain cross-linking hydrophilic polymers the oxygen in the air inhibits polymerization and a nitrogen atmosphere is necessary during polymerization of the flash. In cases where a thermosetting material is heated to cure it both the initial expansion and the subsequent shrinkage of the material will be accommodated by the reservoir. In Fig. 7 the upper and lower female members 413, 15 are axially aligned with a very small clearance at 49 and 51. The viscosity of the moulding material and the weight of the upper member are chosen so that a thin film remains between the members 413, 15 to form a restricted connection 429 between the cavity 431 and the reservoir 433. The cured lens is machined by mounting the male member, with the lens still attached, on a lathe having a rotating fly cutter for generating the desired curvature.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US46693374A | 1974-05-06 | 1974-05-06 | |
US56440375A | 1975-04-08 | 1975-04-08 |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS50151966A true JPS50151966A (en) | 1975-12-06 |
JPS598219B2 JPS598219B2 (en) | 1984-02-23 |
Family
ID=27041840
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP50053277A Expired JPS598219B2 (en) | 1974-05-06 | 1975-05-06 | lens manufacturing equipment |
Country Status (7)
Country | Link |
---|---|
JP (1) | JPS598219B2 (en) |
CA (1) | CA1070066A (en) |
DE (1) | DE2518905C2 (en) |
FR (1) | FR2270082B1 (en) |
GB (1) | GB1511901A (en) |
IT (1) | IT1032811B (en) |
SE (1) | SE418822B (en) |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS53134456A (en) * | 1977-04-28 | 1978-11-24 | Nippon Contact Lense | Contact lens production mold and method of producing silicon contact lens |
JPS57189116A (en) * | 1981-04-30 | 1982-11-20 | Mihiyaeru Bai | Manufacture of soft contact lens and cast mold used therefor |
JPH01258916A (en) * | 1988-04-09 | 1989-10-16 | Asahi Optical Co Ltd | Casting mold for molding lens |
JP2013501648A (en) * | 2009-12-21 | 2013-01-17 | フラウンホッファー−ゲゼルシャフト ツァ フェルダールング デァ アンゲヴァンテン フォアシュンク エー.ファオ | Method and apparatus for producing structures, molds |
JP2017207760A (en) * | 2011-02-28 | 2017-11-24 | クーパーヴィジョン インターナショナル ホウルディング カンパニー リミテッド パートナーシップ | Phosphine-containing hydrogel contact lens |
CN110341096A (en) * | 2019-07-10 | 2019-10-18 | 吉林瑞尔康隐形眼镜有限公司 | 50% aqueous contact lenses molding die of one kind and preparation method thereof |
Families Citing this family (23)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4121896A (en) * | 1976-03-24 | 1978-10-24 | Shepherd Thomas H | Apparatus for the production of contact lenses |
US4155962A (en) * | 1977-05-25 | 1979-05-22 | Neefe Optical Laboratory, Inc. | Method of removing molded lenses from the mold |
US4165158A (en) * | 1977-07-25 | 1979-08-21 | American Optical Corporation | Cast contact lenses and method for making same |
FR2402525A1 (en) * | 1977-09-12 | 1979-04-06 | Toray Industries | PROCESS FOR MANUFACTURING COMPOSITIONS OF SOFT CONTACT LENSES AND NEW PRODUCTS THUS OBTAINED |
IT1094754B (en) * | 1978-05-12 | 1985-08-02 | Italiana Lenti S I L S R L Soc | PROCESS FOR THE MANUFACTURE BY CONTINUOUS COMPENSATION CASTING OF LENSES OR OPTICAL MEDIA IN POLYMERIZABLE SYNTHETIC RESINS |
US4209289A (en) * | 1979-05-14 | 1980-06-24 | American Optical Corporation | Contact lens mold |
DE2938098C2 (en) * | 1979-09-20 | 1983-02-03 | Deutsche Spezialglas Ag, 3223 Delligsen | Cast resin mixture for the production of plastic moldings with optical surface quality and their use |
FR2477059A1 (en) * | 1980-02-28 | 1981-09-04 | Medicornea Sa | METHOD OF MANUFACTURING BY MOLDING CONTACT LENSES AND LENSES OBTAINED |
FR2477058A1 (en) * | 1980-02-28 | 1981-09-04 | Medicornea Sa | METHOD OF MANUFACTURING BY MOLDING CONTACT LENSES, AND LENSES OBTAINED |
FR2523505A2 (en) * | 1982-03-17 | 1983-09-23 | Medicornea Sa | IMPROVED PROCESS FOR THE MANUFACTURE, BY MOLDING, OF CONTACT LENSES AND IMPLEMENTING DEVICE |
JPS6370619U (en) * | 1986-10-29 | 1988-05-12 | ||
US4913857A (en) * | 1987-04-03 | 1990-04-03 | Kei Mori | Method for molding a transparent capsule |
JPH0214718U (en) * | 1988-07-13 | 1990-01-30 | ||
US5573108A (en) * | 1988-11-02 | 1996-11-12 | British Technology Group Ltd. | Disposable contact lens package |
EP0367513B1 (en) * | 1988-11-02 | 1995-07-05 | Btg International Limited | Contact lens cast moulding |
US5271875A (en) * | 1991-09-12 | 1993-12-21 | Bausch & Lomb Incorporated | Method for molding lenses |
US5254000A (en) * | 1992-04-23 | 1993-10-19 | Corning Incorporated | Organic polymer lens mold |
DE19706846A1 (en) * | 1997-02-21 | 1998-09-03 | Bodenseewerk Geraetetech | Device for light-initiated chemical crosslinking of material |
JPH10315252A (en) * | 1997-05-20 | 1998-12-02 | Menicon Co Ltd | Mold for molding lens blank and manufacture of contact lens |
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 |
DE102009055088B4 (en) | 2009-12-21 | 2015-04-02 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | Method for producing a structure, optical component, optical layer stack |
JP5558152B2 (en) * | 2010-03-23 | 2014-07-23 | 京セラメディカル株式会社 | Photografting lens and film forming apparatus |
GB201302268D0 (en) | 2013-02-08 | 2013-03-27 | Ocutec Ltd | Molding Apparatus and Method |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2728106A (en) * | 1950-09-08 | 1955-12-27 | American Optical Corp | Means for producing optical elements |
US2890486A (en) * | 1955-08-29 | 1959-06-16 | American Optical Corp | Mold for producing lens of any shape from a polymerizable material |
GB847797A (en) * | 1955-12-30 | 1960-09-14 | Combined Optical Ind Ltd | Improvements in or relating to the casting of synthetic resins |
DE1945321A1 (en) * | 1969-09-06 | 1971-03-11 | Zeiss Carl Fa | Optical components of duroplastic - synthetics |
-
1975
- 1975-04-18 GB GB16228/75A patent/GB1511901A/en not_active Expired
- 1975-04-21 CA CA225,087A patent/CA1070066A/en not_active Expired
- 1975-04-28 DE DE2518905A patent/DE2518905C2/en not_active Expired
- 1975-05-05 FR FR7513915A patent/FR2270082B1/fr not_active Expired
- 1975-05-05 SE SE7505165A patent/SE418822B/en unknown
- 1975-05-05 IT IT68136/75A patent/IT1032811B/en active
- 1975-05-06 JP JP50053277A patent/JPS598219B2/en not_active Expired
Cited By (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS53134456A (en) * | 1977-04-28 | 1978-11-24 | Nippon Contact Lense | Contact lens production mold and method of producing silicon contact lens |
JPS6030529B2 (en) * | 1977-04-28 | 1985-07-17 | 日本コンタクトレンズ製造株式会社 | Molding mold for manufacturing silicone resin contact lenses |
JPS57189116A (en) * | 1981-04-30 | 1982-11-20 | Mihiyaeru Bai | Manufacture of soft contact lens and cast mold used therefor |
JPH0449093B2 (en) * | 1981-04-30 | 1992-08-10 | Miaarenzu Purodakushon As | |
JPH01258916A (en) * | 1988-04-09 | 1989-10-16 | Asahi Optical Co Ltd | Casting mold for molding lens |
JP2013501648A (en) * | 2009-12-21 | 2013-01-17 | フラウンホッファー−ゲゼルシャフト ツァ フェルダールング デァ アンゲヴァンテン フォアシュンク エー.ファオ | Method and apparatus for producing structures, molds |
JP2017207760A (en) * | 2011-02-28 | 2017-11-24 | クーパーヴィジョン インターナショナル ホウルディング カンパニー リミテッド パートナーシップ | Phosphine-containing hydrogel contact lens |
CN110341096A (en) * | 2019-07-10 | 2019-10-18 | 吉林瑞尔康隐形眼镜有限公司 | 50% aqueous contact lenses molding die of one kind and preparation method thereof |
CN110341096B (en) * | 2019-07-10 | 2020-12-25 | 苏州瑞尔康科技有限公司 | 50% water content contact lens molding die and manufacturing method thereof |
Also Published As
Publication number | Publication date |
---|---|
DE2518905C2 (en) | 1984-10-04 |
DE2518905A1 (en) | 1975-11-20 |
JPS598219B2 (en) | 1984-02-23 |
CA1070066A (en) | 1980-01-22 |
IT1032811B (en) | 1979-06-20 |
GB1511901A (en) | 1978-05-24 |
FR2270082B1 (en) | 1977-11-18 |
AU8063175A (en) | 1976-11-04 |
FR2270082A1 (en) | 1975-12-05 |
SE418822B (en) | 1981-06-29 |
SE7505165L (en) | 1975-11-07 |
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