MX9604513A - Metodo para reducir defectos de agujeros en el lente en la produccion de plantillas para lentes de contacto. - Google Patents
Metodo para reducir defectos de agujeros en el lente en la produccion de plantillas para lentes de contacto.Info
- Publication number
- MX9604513A MX9604513A MX9604513A MX9604513A MX9604513A MX 9604513 A MX9604513 A MX 9604513A MX 9604513 A MX9604513 A MX 9604513A MX 9604513 A MX9604513 A MX 9604513A MX 9604513 A MX9604513 A MX 9604513A
- Authority
- MX
- Mexico
- Prior art keywords
- production
- contact lens
- hole defects
- reducing
- blanks
- 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
- B29D11/00125—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
- 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
- B29C33/56—Coatings, e.g. enameled or galvanised; Releasing, lubricating or separating agents
- B29C33/60—Releasing, lubricating or separating 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
- B29D11/00192—Demoulding, e.g. separating lenses from mould halves
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Health & Medical Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Ophthalmology & Optometry (AREA)
- Eyeglasses (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
- Casting Or Compression Moulding Of Plastics Or The Like (AREA)
- Solid State Image Pick-Up Elements (AREA)
- Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)
Abstract
La homogeneidad y uniformidad mejorada de las características de energía de superficie en una superficie de molde para la proteccion de un lente de contacto hidrofílico se logra con la aplicacion temporal de un agente de superficie activo tal como el Tween 80, para facilitar la humectacion de la superficie optica del molde, especialmente el molde convexo con la mezcla de monomeros reactivos.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US08/536,944 US5849222A (en) | 1995-09-29 | 1995-09-29 | Method for reducing lens hole defects in production of contact lens blanks |
US08536944 | 1995-09-29 |
Publications (2)
Publication Number | Publication Date |
---|---|
MX9604513A true MX9604513A (es) | 1997-07-31 |
MXPA96004513A MXPA96004513A (es) | 1997-12-01 |
Family
ID=
Also Published As
Publication number | Publication date |
---|---|
AU722583B2 (en) | 2000-08-10 |
DE69621090D1 (de) | 2002-06-13 |
EP0765733A3 (en) | 1997-10-08 |
EP0765733B1 (en) | 2002-05-08 |
CA2186566C (en) | 2007-01-02 |
DE69621090T2 (de) | 2002-10-10 |
EP0765733A2 (en) | 1997-04-02 |
TW527276B (en) | 2003-04-11 |
US5849222A (en) | 1998-12-15 |
JP4121577B2 (ja) | 2008-07-23 |
JPH09183131A (ja) | 1997-07-15 |
ATE217255T1 (de) | 2002-05-15 |
SG102521A1 (en) | 2004-03-26 |
AU6556696A (en) | 1997-04-10 |
CA2186566A1 (en) | 1997-03-30 |
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