FR2402525A1 - Procede de fabrication de compositions de lentilles de contact molles et nouveaux produits ainsi obtenus - Google Patents

Procede de fabrication de compositions de lentilles de contact molles et nouveaux produits ainsi obtenus

Info

Publication number
FR2402525A1
FR2402525A1 FR7825968A FR7825968A FR2402525A1 FR 2402525 A1 FR2402525 A1 FR 2402525A1 FR 7825968 A FR7825968 A FR 7825968A FR 7825968 A FR7825968 A FR 7825968A FR 2402525 A1 FR2402525 A1 FR 2402525A1
Authority
FR
France
Prior art keywords
lens
component
original solution
molds
monomers
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
Application number
FR7825968A
Other languages
English (en)
Other versions
FR2402525B1 (fr
Inventor
Shinzo Ohkado
Hideki Kenjo
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Toray Industries Inc
Original Assignee
Toray Industries Inc
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
Priority claimed from JP10892677A external-priority patent/JPS5443284A/ja
Priority claimed from JP10892577A external-priority patent/JPS5923271B2/ja
Application filed by Toray Industries Inc filed Critical Toray Industries Inc
Publication of FR2402525A1 publication Critical patent/FR2402525A1/fr
Application granted granted Critical
Publication of FR2402525B1 publication Critical patent/FR2402525B1/fr
Granted legal-status Critical Current

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
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B1/00—Optical elements characterised by the material of which they are made; Optical coatings for optical elements
    • G02B1/04—Optical elements characterised by the material of which they are made; Optical coatings for optical elements made of organic materials, e.g. plastics
    • G02B1/041—Lenses
    • G02B1/043—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

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Health & Medical Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Ophthalmology & Optometry (AREA)
  • Mechanical Engineering (AREA)
  • Eyeglasses (AREA)
  • Casting Or Compression Moulding Of Plastics Or The Like (AREA)
  • Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)

Abstract

Procédé de préparation de compositions pour lentilles de contact molles et nouveaux produits ainsi obtenus. Ces lentilles sont produites en déversant un excès d'une solution d'origine dans un moule concave, pourvu d'une surface d'interférence 1, en plaçant un moule convexe ayant une surface sans interférence 2, sur le moule concave, et en faisant déborder l'extrait de la solution d'origine pour remplir ainsi uniformément cette solution, dans un espace entre moule concave et le moule convexe, en gélifiant la solution d'origine entre les deux moules pour former entre eux une lentille ayant une résistance à la traction d'au moins environ 0,1 kg/cm**2, à immerger la lentille et les deux moules dans un liquide pour retirer la lentille à partir des moules par pelage, et à extraire la lentille à l'aide d'un traitement d'extraction avec de l'eau ; la solution d'origine contient un composant A choisi dans le groupe se composant de monomères et de polymères hydrophiles, où les monomères fournissent le composant hydrophile par polymérisation, un composant B choisi dans le groupe se composant de monomères et de polymères hydrophobes, où les monomères fournissent un composant hydrophobe par polymérisation, et un solvant C, le rapport en poids A : B étant d'environ 85 : 15 à environ 55 : 45 et le solvant C étant environ 5 à 95 % en poids.
FR7825968A 1977-09-12 1978-09-08 Procede de fabrication de compositions de lentilles de contact molles et nouveaux produits ainsi obtenus Granted FR2402525A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP10892677A JPS5443284A (en) 1977-09-12 1977-09-12 Dope for forming soft contact lens
JP10892577A JPS5923271B2 (ja) 1977-09-12 1977-09-12 ソフトコンタクトレンズの製造方法

Publications (2)

Publication Number Publication Date
FR2402525A1 true FR2402525A1 (fr) 1979-04-06
FR2402525B1 FR2402525B1 (fr) 1982-02-05

Family

ID=26448750

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7825968A Granted FR2402525A1 (fr) 1977-09-12 1978-09-08 Procede de fabrication de compositions de lentilles de contact molles et nouveaux produits ainsi obtenus

Country Status (5)

Country Link
US (2) US4347198A (fr)
AU (1) AU530070B2 (fr)
DE (1) DE2839249A1 (fr)
FR (1) FR2402525A1 (fr)
GB (1) GB2006091B (fr)

Cited By (4)

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EP0187652A2 (fr) * 1985-01-09 1986-07-16 Menicon Co., Ltd. Lentille de contact avec grande absorption d'eau
EP0216074A2 (fr) * 1985-07-31 1987-04-01 Ciba-Geigy Ag Dérivés de polyvinylalcool et lentilles de contact à base d'un hydrogel réticulé
WO1993004848A1 (fr) * 1991-09-12 1993-03-18 Bausch & Lomb Incorporated Procede et appareil de moulage de lentilles
EP0645235A2 (fr) * 1990-04-17 1995-03-29 JOHNSON & JOHNSON VISION PRODUCTS, INC. Procédé pour l'hydration des lentilles souples de contact

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US4121896A (en) * 1976-03-24 1978-10-24 Shepherd Thomas H Apparatus for the production of contact lenses

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FR2109470A5 (fr) * 1970-10-19 1972-05-26 Silor
FR2270082A1 (fr) * 1974-05-06 1975-12-05 Bausch & Lomb

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0187652A2 (fr) * 1985-01-09 1986-07-16 Menicon Co., Ltd. Lentille de contact avec grande absorption d'eau
EP0187652A3 (en) * 1985-01-09 1988-11-30 Toyo Contact Lens Co., Ltd. High water-absorptive soft contact lens
US4829126A (en) * 1985-01-09 1989-05-09 Toyo Contact Lens Co., Ltd. High water-absorptive soft contact lens
EP0216074A2 (fr) * 1985-07-31 1987-04-01 Ciba-Geigy Ag Dérivés de polyvinylalcool et lentilles de contact à base d'un hydrogel réticulé
EP0216074A3 (en) * 1985-07-31 1989-10-18 Ciba-Geigy Ag Polyvinyl alcohol derivatives and crosslinked hydrogel contact lenses made therefrom
EP0645235A2 (fr) * 1990-04-17 1995-03-29 JOHNSON & JOHNSON VISION PRODUCTS, INC. Procédé pour l'hydration des lentilles souples de contact
EP0645235A3 (fr) * 1990-04-17 1996-04-24 Johnson & Johnson Vision Prod Procédé pour l'hydration des lentilles souples de contact.
WO1993004848A1 (fr) * 1991-09-12 1993-03-18 Bausch & Lomb Incorporated Procede et appareil de moulage de lentilles
US5271875A (en) * 1991-09-12 1993-12-21 Bausch & Lomb Incorporated Method for molding lenses
US5466147A (en) * 1991-09-12 1995-11-14 Bausch & Lomb Incorporated Apparatus for molding lenses

Also Published As

Publication number Publication date
FR2402525B1 (fr) 1982-02-05
AU530070B2 (en) 1983-06-30
US4347198A (en) 1982-08-31
DE2839249A1 (de) 1979-03-22
GB2006091B (en) 1982-03-31
US4699934A (en) 1987-10-13
GB2006091A (en) 1979-05-02
AU3974878A (en) 1980-03-20
DE2839249C2 (fr) 1991-09-12

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