SG10201406537XA - Method and device for maintaining a concentration of a treatment bath - Google Patents

Method and device for maintaining a concentration of a treatment bath

Info

Publication number
SG10201406537XA
SG10201406537XA SG10201406537XA SG10201406537XA SG10201406537XA SG 10201406537X A SG10201406537X A SG 10201406537XA SG 10201406537X A SG10201406537X A SG 10201406537XA SG 10201406537X A SG10201406537X A SG 10201406537XA SG 10201406537X A SG10201406537X A SG 10201406537XA
Authority
SG
Singapore
Prior art keywords
bath
treatment liquid
concentration
maintaining
treatment
Prior art date
Application number
SG10201406537XA
Inventor
Roger Biel
Katrin Sylke Lorenz
Original Assignee
Novartis Ag
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
Application filed by Novartis Ag filed Critical Novartis Ag
Publication of SG10201406537XA publication Critical patent/SG10201406537XA/en

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

Landscapes

  • Engineering & Computer Science (AREA)
  • Health & Medical Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Ophthalmology & Optometry (AREA)
  • Mechanical Engineering (AREA)
  • Coating Apparatus (AREA)
  • Eyeglasses (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)

Abstract

METHOD AND DEVICE FOR MAINTAINING A CONCENTRATION OF A TREATMENT BATH There described is a method for maintaining the concentration of a treatment liquid bath in the production process for contact lenses which comprises the process steps of rinsing each lens in a water bath immediately prior to immersing the lens in a liquid bath for extraction and/or rinsing and/or coating thereof. Immediately following the rinsing in the water bath each contact lens is immersed in an arrangement of two or more successive treatment liquid baths of the same kind. The treatment liquids in the successive baths are continuously renewed and are transported from one bath to the preceding bath in a direction opposite to a transport direction of the contact lenses from bath to bath. metered A volume of treatment liquid is continuously introduced into the last bath of the arrangement of treatment liquid baths in dependency of a measured concentration, and a specified volume of treatment liquid is continuously removed from the first bath. FIG. 1 13
SG10201406537XA 2009-10-16 2010-10-14 Method and device for maintaining a concentration of a treatment bath SG10201406537XA (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US25251009P 2009-10-16 2009-10-16

Publications (1)

Publication Number Publication Date
SG10201406537XA true SG10201406537XA (en) 2014-12-30

Family

ID=43365268

Family Applications (1)

Application Number Title Priority Date Filing Date
SG10201406537XA SG10201406537XA (en) 2009-10-16 2010-10-14 Method and device for maintaining a concentration of a treatment bath

Country Status (7)

Country Link
US (1) US20110091643A1 (en)
EP (1) EP2488350B1 (en)
CN (1) CN102596550A (en)
HU (1) HUE044883T2 (en)
MY (1) MY172487A (en)
SG (1) SG10201406537XA (en)
WO (1) WO2011045382A1 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2012080468A1 (en) * 2010-12-16 2012-06-21 Novartis Ag Method and apparatus for transferring objects between two consecutive processing stations being operated with different cycle speeds
CN103741419B (en) * 2013-12-30 2015-12-30 启东华恩箱包有限公司 Dye liquor concentration compensation structure

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5080839A (en) * 1990-04-17 1992-01-14 Johnson & Johnson Vision Products, Inc. Process for hydrating soft contact lenses
US5219533A (en) * 1991-11-18 1993-06-15 General Electric Company Apparatus for solvent extraction process
EP0649058B1 (en) * 1993-10-15 1999-01-13 Agfa-Gevaert N.V. Photographic liquid processing station
US5836323A (en) * 1994-06-10 1998-11-17 Johnson & Johnson Vision Products, Inc. Automated method and apparatus for hydrating soft contact lenses
EP1023617A1 (en) * 1997-09-23 2000-08-02 Novartis AG Method for hydrogel surface treatment and article formed therefrom
GB9721467D0 (en) * 1997-10-09 1997-12-10 Eastman Kodak Co Processing photographic material
US20030222362A1 (en) * 2002-03-28 2003-12-04 Bausch & Lomb Incorporated Process for extracting biomedical devices
CN1956741A (en) * 2004-05-21 2007-05-02 博士伦公司 Process for extracting biomedical devices
US20050258096A1 (en) * 2004-05-21 2005-11-24 Bausch & Lomb Incorporated Process for extracting biomedical devices
US7319133B2 (en) * 2005-08-09 2008-01-15 Coopervision, Inc. Contact lens extraction/hydration systems and methods of reprocessing fluids used therein

Also Published As

Publication number Publication date
US20110091643A1 (en) 2011-04-21
CN102596550A (en) 2012-07-18
EP2488350A1 (en) 2012-08-22
MY172487A (en) 2019-11-27
WO2011045382A1 (en) 2011-04-21
HUE044883T2 (en) 2019-11-28
EP2488350B1 (en) 2019-03-20

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