The polarizing film PVA mainly has the following distinctive characteristics:
Light selection: select the light with the same polarization direction and widening direction;
Ambient temperature Environmental humidity sensitivity: Absorbing moisture or heating, pulling into linear molecular chains will automatically restore to blocky molecular chains, and the lost light can be selected.
Vulnerability: It is very easy to lose light selectivity under the action of external forces.
Polarization film classification:
According to the ambient temperature, it can be divided into general polarizing film and wide temperature polarizing film;
According to the large transmittance, it can be divided into general transmittance and high diffuser;
The background color is divided into gray and white polarizing film and colorful polarizing film;
The optical film is divided into full scattering film, semi scattering semi reflector, light reflector, electronic optical compensation film and angle control film according to different functions of composite type.
2. Basic performance parameters of hazardous polarizing film:
Thin thickness, parallel plane transmittance, vertical transmittance); High efficiency of polarizer; Hue coordinates (NBS); Type of composite bag; UV protection.

3. Responsive test standards and judgment standards of polarizing film factory:
Specification: A. Test standard: use a scale to accurately measure the length of the polarizing film to be measured. Vernier caliper or caliper. Overall width and thickness. B. Specification: the measured value is within the range of the main parameters provided by the dealer.
Optical characteristics: A Test standard: Paste the polarizing film on the commodity, and compare it with the same industry with similar polarizing film. B. Specification: The value of the products manufactured by the tested object Voff is Voff equivalent; The saturation of the test piece exceeds the saturation for production; The background color of the test piece is consistent with the specified background color.
Stability: A Test standard: stick the polarizing film to be tested on the glass, and test the stability together with the products with polarizing film. B. Clear specification: the electronic optical and thermal characteristics are the same as the reliability test results, and are within the requirements of the test product specifications.
Adhesion and separation characteristics: A. Test standard: stick the polarizing film to be tested on the glass, stick it repeatedly and separate it several times. B. Judgment standard: repeated pasting After three times of separation, there is no glue mark on the glass after three times of separation, and the fusion is stable after sticking. The emulsion is completely broken according to the main parameters set in the production and manufacturing, according to the high humidity test.

4. Selection criteria of polarizing film:
A+Under normal conditions, all polarizing films are used in the original package, and some products can use TFT non rotatory triangle materials; Under normal conditions, all original polarizing films are used.
A. All polarizing films of the original grade, TFT non rotatory triangle materials or TFT corner leftover polarizing films with a large inventory are generally used for new product skins; Or it will be the key way for suppliers to purchase TFT corner remnant polarizing film, and all polarizing films or composite film photos of original packaging grade will be selected for film photos.
The inventory of TFT corner leftover polarizing film shall be used less for the surface of new products of Class B Fragments, or in the future will no longer be the key way dealers TFT corner remnant polarizing film; Composite film photos shall be selected. If required by the customer, the unique polarizing film shall be selected according to the customer's requirements.
5. Usage of polarizing film:
Handle with care. Do not push the surface with a hard block.
Do not retract when taking and placing.
Before the capital is put into production, color matching and selection shall be carried out for grade sheets and leftover corner sheets.
Make sure that the patch LCD can stick the polarizing film only after the residual cleaning solution on the surface is completely volatilized.

When laser cutting ultrahigh temperature polarizing film, the glue river must be placed downward.
6. Storage and transportation mode of polarizing film:
Storage method of polarizing film: the polarizing film shall be stored under normal temperature, and the ambient humidity shall be less than 75% of the light; It shall be placed during storage; The dealer shall thoroughly pack the polarizing film according to the relative height and position of the dealer's logo; Polarization film for logistics packaging. Scattered and stacked polarizing film. When stacking, every 300 pieces are separated and stacked at the support point.
Transport method of polarizing film: the polarizing film shall be placed on the top of the transport object, and the relative height shall not exceed the relative height of the stack. The polarizing film shall not be placed vertically or touch the working pressure.