Polyester release film for optics

Abstract

The invention discloses a polyester release film for optics. The release film is obtained through bidirectional stretching, and is operated according to the following steps of: fusing and extruding polyester chips onto a casting sheet roller, and cooling, thereby obtaining polyester thick sheets; stretching the polyester thick sheets longitudinally, and coating waterborne organic silicone elastomer coating materials with the solid mass content of 5%-10% on at least one surface on line; and stretching horizontally again after preheating, thereby obtaining the polyester release film for optics through heat setting and winding. The release film provided by the invention is high in coating level degree, low in interference rainbow lines, low in haze, and high in transmissivity, and can be widely applied to components of various displays such as a polarizer, a polarizer protection film and organic EL (electroluminescence) for a panel display.

Description

technical field

[0001] The invention relates to a film material technology, in particular to a polyester release film for optics. Background technique

[0002] Polyester release film has been widely used in packaging, printing, screen printing, pad printing, nameplate, membrane switch, flexible circuit, insulation products, circuit board, laser anti-counterfeiting, lamination, electronics, film for sealing materials, reflective materials , waterproof materials, medicine (plaster paper), toilet paper, adhesive products, die-cutting and punching processing and other industries.

[0003] Polyester release films for optics are used in various display components such as polarizing plates for flat panel displays, polarizing plate protective films, and organic EL due to their excellent characteristics. With the increase in the size of flat panel displays, the requirements for the apparent quality of components such as polarizers, polarizer protective films, and organic EL componen...

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