FR2558766B1 - Procede et equipement pour l'etalement de melanges de monomeres dans des moules en vue du moulage centrifuge de lentilles de contact - Google Patents
Procede et equipement pour l'etalement de melanges de monomeres dans des moules en vue du moulage centrifuge de lentilles de contactInfo
- Publication number
- FR2558766B1 FR2558766B1 FR8501041A FR8501041A FR2558766B1 FR 2558766 B1 FR2558766 B1 FR 2558766B1 FR 8501041 A FR8501041 A FR 8501041A FR 8501041 A FR8501041 A FR 8501041A FR 2558766 B1 FR2558766 B1 FR 2558766B1
- Authority
- FR
- France
- Prior art keywords
- molds
- spreading
- monomers
- mixtures
- equipment
- 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.)
- Expired
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
- B29C41/00—Shaping by coating a mould, core or other substrate, i.e. by depositing material and stripping-off the shaped article; Apparatus therefor
- B29C41/02—Shaping by coating a mould, core or other substrate, i.e. by depositing material and stripping-off the shaped article; Apparatus therefor for making articles of definite length, i.e. discrete articles
- B29C41/04—Rotational or centrifugal casting, i.e. coating the inside of a mould by rotating the mould
- B29C41/06—Rotational or centrifugal casting, i.e. coating the inside of a mould by rotating the mould about two or more axes
-
- 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
- B29D11/00115—Production of contact lenses made by rotational casting
-
- 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
- B29C41/00—Shaping by coating a mould, core or other substrate, i.e. by depositing material and stripping-off the shaped article; Apparatus therefor
- B29C41/02—Shaping by coating a mould, core or other substrate, i.e. by depositing material and stripping-off the shaped article; Apparatus therefor for making articles of definite length, i.e. discrete articles
- B29C41/04—Rotational or centrifugal casting, i.e. coating the inside of a mould by rotating the mould
- B29C41/042—Rotational or centrifugal casting, i.e. coating the inside of a mould by rotating the mould by rotating a mould around its axis of symmetry
- B29C41/045—Rotational or centrifugal casting, i.e. coating the inside of a mould by rotating the mould by rotating a mould around its axis of symmetry the axis being placed vertically, e.g. spin casting
-
- 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
- B29L2011/0041—Contact lenses
-
- 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)
- Casting Or Compression Moulding Of Plastics Or The Like (AREA)
- Eyeglasses (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CS84590A CS247723B1 (en) | 1984-01-26 | 1984-01-26 | Method and device for monomeric compounds triturating in moulds for contact lenses centrifugal casting |
Publications (2)
Publication Number | Publication Date |
---|---|
FR2558766A1 FR2558766A1 (fr) | 1985-08-02 |
FR2558766B1 true FR2558766B1 (fr) | 1988-05-27 |
Family
ID=5338256
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR8501041A Expired FR2558766B1 (fr) | 1984-01-26 | 1985-01-25 | Procede et equipement pour l'etalement de melanges de monomeres dans des moules en vue du moulage centrifuge de lentilles de contact |
Country Status (5)
Country | Link |
---|---|
US (1) | US4722813A (fr) |
JP (1) | JPS60210411A (fr) |
CS (1) | CS247723B1 (fr) |
FR (1) | FR2558766B1 (fr) |
GB (1) | GB2153291B (fr) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CS272334B1 (en) * | 1988-05-13 | 1991-01-15 | Sulc Jiri | Method of lenses rotating casting and equipment for realization of this method |
JP3651698B2 (ja) * | 1995-04-28 | 2005-05-25 | 株式会社アサヒオプティカル | プラスチックレンズの製造方法 |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4153349A (en) * | 1961-12-27 | 1979-05-08 | Npd Technologies, Inc. | Soft contact lens with thin edge |
US3337662A (en) * | 1963-10-10 | 1967-08-22 | Allied Chem | Process for cavity wetting |
US3652760A (en) * | 1969-01-15 | 1972-03-28 | Spheres Inc | Process for casting acrylic spheres |
NL7406977A (en) * | 1974-05-24 | 1974-09-25 | Moulding appts for hollow thermoplastic articles mass prodn. - by sintering in oscillating, rotating, heat conducting mould bodies | |
SU933473A1 (ru) * | 1980-06-23 | 1982-06-07 | Львовский Ордена Ленина Политехнический Институт Им.Ленинского Комсомола | Способ изготовлени контактных линз центробежным формованием |
US4424175A (en) * | 1982-07-27 | 1984-01-03 | Neefe Charles W | Spin casting |
US4422984A (en) * | 1982-09-13 | 1983-12-27 | Neefe Charles W | Centrifugal casting of contact lenses |
US4517139A (en) * | 1983-05-02 | 1985-05-14 | International Hydron Corporation | Device and method for centrifugally casting articles on a continuous basis |
CS243055B1 (en) * | 1983-05-23 | 1986-05-15 | Otto Wichterle | Contact lenses production equipment |
-
1984
- 1984-01-26 CS CS84590A patent/CS247723B1/cs unknown
-
1985
- 1985-01-14 US US06/691,424 patent/US4722813A/en not_active Expired - Lifetime
- 1985-01-16 GB GB08501026A patent/GB2153291B/en not_active Expired
- 1985-01-25 FR FR8501041A patent/FR2558766B1/fr not_active Expired
- 1985-01-26 JP JP60013378A patent/JPS60210411A/ja active Granted
Also Published As
Publication number | Publication date |
---|---|
US4722813A (en) | 1988-02-02 |
FR2558766A1 (fr) | 1985-08-02 |
GB2153291B (en) | 1987-07-08 |
CS247723B1 (en) | 1987-01-15 |
GB8501026D0 (en) | 1985-02-20 |
JPS60210411A (ja) | 1985-10-22 |
GB2153291A (en) | 1985-08-21 |
JPH0441888B2 (fr) | 1992-07-09 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
ST | Notification of lapse |