Because LCD display not light, ISO identification requirement in order to display

bright, polarizing film must have a clear, high permeability and high optical

activity. LCD recently becoming more widely used, such as livelihood, military and

high-tech, particularly application of intelligent machines. Due to the diversity of

the LCD and the durability of promotion, we must strengthen the durability and

resistance to rotation of the polarized film.

In addition, the appearance of characters on, with the draw cable LCD improving

polarizing film surfaces must be smooth and fine, if prolonged use at high

temperature and high humidity environment, must also be maintained on the optical

performance, and with one of the key parts of the security requirements for

adhesives, usually in a polarizing film manufacturing process, is carried out in

clean room:
1. is PVA polarizing film footage and TAC, so it is not available on the foreign

body and resin that is not soluble.
2. in the polarizing film laminating process, not glue, lamination and when there is

any foreign body into.
3. the protection film and release film and other materials may not have any

defects.
4. finished surface and cutting surfaces, or on the wrapper should not be mixed with

any foreign objects attached to it.

If the above conditions cannot be met, you cannot make a high resolution and large

size, high precision of polarizing film.

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