Cleaning method of roller type mold for manufacturing optical film

A technology of optical film and mold, applied in the field of cleaning of roller molds, can solve the problems of insufficient cleaning efficiency and unsatisfactory satisfaction
CN102189089AInactive Publication Date: 2011-09-21SUMITOMO CHEM CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
SUMITOMO CHEM CO LTD
Publication Date
2011-09-21
Estimated Expiration
Not applicable · inactive patent

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Abstract

The present invention provides a cleaning method of a roller type mold for manufacturing an optical film. The cleaning method of the invention is characterized in that: the roller type mold which is provided with adhered mold pollutant is placed in alkaline water solution with pH value that is above 10. Furthermore an ultrasonic wave treatment is performed for the roller type mold under a temperature of 30-70 DEG C. The cleaning method does not damage the roller type mold and can well protect a polluted surface. Therefore, the cleaning method is preferably used for a state that the mold pollutant is photocurable resin.
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Description

technical field

[0001] The present invention relates to the technical field of manufacturing optical films such as prism films, diffusion films, and anti-glare films used in liquid crystal display devices, and more specifically relates to a method of cleaning roll molds used in the manufacture of optical films. Background technique

[0002] Optical films such as prism films, diffusion films, and anti-glare films used in liquid crystal display devices, for example, are known in which the surface shape of a roll mold is transferred to the film by extruding and bonding a film-like resin to the surface of the roll mold. After being applied, the film is peeled off from the roll mold to manufacture.

[0003] When the optical film is continuously produced by this method, a part of the resin constituting the optical film gradually remains on the surface of the roll mold as mold contamination and begins to accumulate. Therefore, in order to continuously manufacture high-quality opti...

Claims

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