At present, the maximum width of the light guide plate of the PVC mixer can reach 2000mm, the maximum length can reach 4000mm, and the minimum thickness is only 2mm. The larger the size, the greater the thickness and the lower the light guide effect in order to ensure the brightness, and the thickest light guide plate shall not exceed 20mm.

Attention shall be paid to prevent scratches when processing the light guide plate of the PVC mixer. The integrity of the packaging paper shall be maintained when cutting and polishing the light guide plate. When polishing the light guide plate, if there are obvious chips or dust left in its cut, the light guide effect will be affected. If the reflective paper on the back is packaged with the lamp tube as a whole, the light guide effect is better. The length of the light guide plate on one side of the lamp tube should be equal to or slightly longer than the length of the lamp tube; For example, the lamp tube is significantly shorter than the light guide plate during the test.

The light guide plate of the PVC mixer shall be tested with a genuine light source; The brightness and color of the light source will also affect the light guide effect. There is no background color when the light is emitted, and the light guide brightness of Fangsheng light guide plate will have a large deviation if judged directly with the naked eye. Because the raw material of the light guide plate of the PVC mixer is the imported refined MMA plate, which is colorless and transparent. The naked eye cannot directly perceive its true brightness. It is recommended to use an illuminometer to test or put on a light box to judge its brightness.