IT946001B - Procedimento stampo ed apparecchia tura per la fabbricazione di lenti a contatto in particolare di lenti a contatto flessibili - Google Patents
Procedimento stampo ed apparecchia tura per la fabbricazione di lenti a contatto in particolare di lenti a contatto flessibiliInfo
- Publication number
- IT946001B IT946001B IT30029/71A IT3002971A IT946001B IT 946001 B IT946001 B IT 946001B IT 30029/71 A IT30029/71 A IT 30029/71A IT 3002971 A IT3002971 A IT 3002971A IT 946001 B IT946001 B IT 946001B
- Authority
- IT
- Italy
- Prior art keywords
- contact lenses
- mold
- procedure
- equipment
- particular flexible
- Prior art date
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
- B29D11/00038—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
- 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
- B29C43/3607—Moulds for making articles of definite length, i.e. discrete articles 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
- 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
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S425/00—Plastic article or earthenware shaping or treating: apparatus
- Y10S425/808—Lens mold
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Health & Medical Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Ophthalmology & Optometry (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
- Casting Or Compression Moulding Of Plastics Or The Like (AREA)
- Eyeglasses (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR7037579A FR2109470A5 (it) | 1970-10-19 | 1970-10-19 |
Publications (1)
Publication Number | Publication Date |
---|---|
IT946001B true IT946001B (it) | 1973-05-21 |
Family
ID=9062912
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
IT30029/71A IT946001B (it) | 1970-10-19 | 1971-10-19 | Procedimento stampo ed apparecchia tura per la fabbricazione di lenti a contatto in particolare di lenti a contatto flessibili |
Country Status (11)
Country | Link |
---|---|
US (1) | US3761208A (it) |
JP (1) | JPS5526446B1 (it) |
AU (1) | AU452020B2 (it) |
BE (1) | BE774084A (it) |
CA (1) | CA992279A (it) |
CH (1) | CH552458A (it) |
DE (1) | DE2152062C3 (it) |
FR (1) | FR2109470A5 (it) |
GB (1) | GB1338965A (it) |
IT (1) | IT946001B (it) |
NL (1) | NL170718C (it) |
Families Citing this family (31)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3894129A (en) * | 1973-03-15 | 1975-07-08 | American Optical Corp | Method of manufacture of strain free contact lenses |
US4062627A (en) * | 1973-08-06 | 1977-12-13 | Essilor International (Compagnie Generale D'optique S.A.) | Flexible contact lens |
US3881683A (en) * | 1973-11-29 | 1975-05-06 | American Optical Corp | Gasket for lens mold |
DE2542714C2 (de) * | 1975-09-25 | 1984-01-19 | Agfa-Gevaert Ag, 5090 Leverkusen | Verfahren und Preßstempel zum Aufbringen von Markierungen auf Kontaktlinsen aus Silikonkautschuk |
US4208364A (en) * | 1976-03-24 | 1980-06-17 | Shepherd Thomas H | Process for the production of contact lenses |
US4121896A (en) * | 1976-03-24 | 1978-10-24 | Shepherd Thomas H | Apparatus for the production of contact lenses |
US4169119A (en) * | 1976-04-15 | 1979-09-25 | Permavision | Method of molding an ocular membrane |
US4124277A (en) * | 1977-02-16 | 1978-11-07 | Martin Marietta Corporation | Parabolic mirror construction |
US4191717A (en) * | 1977-05-13 | 1980-03-04 | Weber Hermann P | Casting process for plastic lenses |
US4166088A (en) * | 1977-05-25 | 1979-08-28 | Neefe Charles W | Method of making high quality plastic lenses |
US4165158A (en) * | 1977-07-25 | 1979-08-21 | American Optical Corporation | Cast contact lenses and method for making same |
FR2402525A1 (fr) * | 1977-09-12 | 1979-04-06 | Toray Industries | Procede de fabrication de compositions de lentilles de contact molles et nouveaux produits ainsi obtenus |
US4141941A (en) * | 1977-09-21 | 1979-02-27 | American Optical Corporation | Contact lens casting method |
AU524955B2 (en) * | 1978-08-10 | 1982-10-14 | Gentex Optics Inc | Molding ophthalmic lenses and other articles |
FR2449519A1 (fr) * | 1979-02-23 | 1980-09-19 | Essilor Int | Joint annulaire propre au moulage de lentilles ophtalmiques ou optiques en matiere organique, et procede de mise en oeuvre d'un tel joint |
US4227673A (en) * | 1979-08-10 | 1980-10-14 | American Optical Corporation | Gasket for casting lenses |
US4469646A (en) * | 1982-08-09 | 1984-09-04 | Rawlings David L | Method of molding plastic contact lenses |
JPS60129690U (ja) * | 1984-02-09 | 1985-08-30 | 狭山精密工業株式会社 | ストツプウオツチ |
US4642439A (en) * | 1985-01-03 | 1987-02-10 | Dow Corning Corporation | Method and apparatus for edge contouring lenses |
US4693446A (en) * | 1985-09-20 | 1987-09-15 | Techna Vision, Inc. | Gasket for molding plastic lenses |
GB8606505D0 (en) * | 1986-03-17 | 1986-04-23 | Sealey M J | Contact lens mould |
US5160749A (en) * | 1990-10-30 | 1992-11-03 | Minnesota Mining And Manufacturing Company | Three piece mold assembly for making an ocular device |
US5137441A (en) * | 1990-10-30 | 1992-08-11 | Minnesota Mining And Manufacturing Company | Mold assembly for making an ocular lens blank |
JPH10182173A (ja) * | 1996-12-26 | 1998-07-07 | Canon Inc | ガラス成形品とガラス成形方法及びガラス成形装置 |
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 |
US6431706B1 (en) * | 2000-07-06 | 2002-08-13 | Ocular Sciences, Inc. | Method for cast molding contact lenses with a rounded edge form |
US7628485B2 (en) * | 2000-03-31 | 2009-12-08 | Coopervision International Holding Company, Lp | Contact lens having a uniform horizontal thickness profile |
US6923538B2 (en) * | 2000-07-06 | 2005-08-02 | Coopervision, Inc. | Method for cast moulding contact lenses with a rounded edge form |
US6467903B1 (en) * | 2000-03-31 | 2002-10-22 | Ocular Sciences, Inc. | Contact lens having a uniform horizontal thickness profile |
KR101021433B1 (ko) * | 2002-08-16 | 2011-03-15 | 존슨 앤드 존슨 비젼 케어, 인코포레이티드 | 콘택트 렌즈 제조용 금형, 렌즈의 제조방법, 렌즈, 및 코팅 렌즈의 제조방법 |
US20060145372A1 (en) * | 2004-12-30 | 2006-07-06 | Jones Thomas G | Optical tool assembly for improved RCW and lens edge formation |
Family Cites Families (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2333131A (en) * | 1939-09-13 | 1943-11-02 | American Optical Corp | Pressure mold and process of molding |
GB611432A (en) * | 1946-04-26 | 1948-10-29 | James Mitchell Anderson | A new or improved means for moulding ophthalmic contact lenses from plastics |
US2479935A (en) * | 1947-02-11 | 1949-08-23 | Combined Optical Ind Ltd | Method for forming coated optical elements from polymerizable materials |
US3005234A (en) * | 1959-07-06 | 1961-10-24 | Danker & Wohlk Inc | Apparatus for molding optical lenses |
FR1342447A (fr) * | 1962-11-27 | 1963-11-08 | Ceskoslovenska Akademie Ved | Procédé pour la fabrication de lentilles de contact et lentilles conformes à celles obtenues par ledit procédé ou similaire |
US3248460A (en) * | 1963-02-28 | 1966-04-26 | Bausch & Lomb | Method of making lenses |
GB1102712A (en) * | 1963-11-16 | 1968-02-07 | Barr & Stroud Ltd | Improvements in or relating to a mould assembly for use in the manufacture of optical products |
US3341490A (en) * | 1964-08-13 | 1967-09-12 | Dow Corning | Blends of two polysiloxane copolymers with silica |
US3422168A (en) * | 1964-12-01 | 1969-01-14 | Ppg Industries Inc | Process of casting resinous lenses in thermoplastic cast replica molds |
US3404861A (en) * | 1965-02-22 | 1968-10-08 | Optics Australia Pty Ltd | Optical casting gasket |
US3423488A (en) * | 1966-05-11 | 1969-01-21 | Ppg Industries Inc | Process for casting resinous lenses in thermoplastic cast replica molds |
FR1492305A (fr) * | 1966-07-08 | 1967-08-18 | Optique Lunetterie A Lamard | Perfectionnements apportés aux dispositifs de moulage de lentilles en verre organique et à leurs procédés de fabrication |
US3605195A (en) * | 1970-08-24 | 1971-09-20 | Charles D Campbell | Mold assembly for casting plastic optical lenses |
-
1970
- 1970-10-19 FR FR7037579A patent/FR2109470A5/fr not_active Expired
-
1971
- 1971-10-15 NL NLAANVRAGE7114191,A patent/NL170718C/xx not_active IP Right Cessation
- 1971-10-15 US US00189644A patent/US3761208A/en not_active Expired - Lifetime
- 1971-10-18 GB GB4827271A patent/GB1338965A/en not_active Expired
- 1971-10-18 AU AU34701/71A patent/AU452020B2/en not_active Expired
- 1971-10-18 CH CH1516671A patent/CH552458A/fr not_active IP Right Cessation
- 1971-10-18 CA CA125,432A patent/CA992279A/fr not_active Expired
- 1971-10-18 BE BE774084A patent/BE774084A/xx unknown
- 1971-10-19 JP JP8281671A patent/JPS5526446B1/ja active Pending
- 1971-10-19 IT IT30029/71A patent/IT946001B/it active
- 1971-10-19 DE DE2152062A patent/DE2152062C3/de not_active Expired
Also Published As
Publication number | Publication date |
---|---|
GB1338965A (en) | 1973-11-28 |
NL170718B (nl) | 1982-07-16 |
DE2152062A1 (de) | 1972-04-27 |
DE2152062C3 (de) | 1981-07-23 |
CH552458A (fr) | 1974-08-15 |
AU452020B2 (en) | 1974-08-22 |
JPS5526446B1 (it) | 1980-07-14 |
DE2152062B2 (de) | 1975-09-04 |
NL170718C (nl) | 1982-12-16 |
NL7114191A (it) | 1972-04-21 |
AU3470171A (en) | 1973-05-03 |
US3761208A (en) | 1973-09-25 |
FR2109470A5 (it) | 1972-05-26 |
CA992279A (fr) | 1976-07-06 |
BE774084A (fr) | 1972-02-14 |
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