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1. How to solve the whitening on the surface of PET sheet?

PET materials are subject to strict temperature control during the process of plasticizing, and will turn white if the time is too long or the temperature is too high.

　   一、PET片材表面发白怎解决：
　　一般情况下，吸塑加热时间过长或温度过高时会发白。PET材料在吸塑过程中，温度控制要求比较严，稍微时间过长或温度过高时就发白。

2. How to deal with static electricity in PET sheet?　

The solution to eliminate the static electricity of PET sheet is to reduce the resistance of the material. A certain proportion of antistatic agent can be added to the processing of raw materials to reduce the resistance of the sheet and eliminate the static electricity.

　二、PET片材带静电怎么办：
　　消除PET片材静电的解决办法一般是降低材料的电阻，可在原材料加工中添加一定比例的抗静电剂即可降低片材的电阻，消除静电。

3. What's the density of PET film sheet?

PET is polyester, commonly known as polyester, with a specific gravity of 1.4. Of course, the sheet material is also 1.4.

　　三、PET片材的密度是多少：
　　PET是聚酯，俗称涤纶，比重1.4 。其片材当然也是1.4了。