The quick discerning method of PVC transparent sheet and PET transparent sheet.

The quick discerning method of PVC transparent sheet and PET transparent sheet.

Many users who just come into contact with these two materials are sometimes difficult to distinguish from the appearance, because they are really too similar, especially in this color PVC transparent sheet. In Li Xin, we share a few tips here to help everyone quickly distinguish between the two.

1. Surface judgment

First of all, look at the section or cross -section. Most of the pan -blue light is PVC sheet, because the PVC formula is added with coloring agents such as group green, decentralized purple, fluorescent powder, and there are no pan -blue. Most of the materials are voltage extension, and the surface of the sheet is mostly water -like flowing patterns, but these two types of naked eye distinguishing methods are limited, because PVC sheets can be used for cost colors. The color of the section is close to PET. There is no water pattern that can be done on the surface, so this cannot be successfully identified by 100%of the realization. Then you need to use the following method.

2. Folding discriminating method

Two materials are cut with a small piece each, and they will be discounted separately. You will find that because the dual restrictions of the molecular composition of the PVC sheet material and the pressure extension production process, most of the PVC sheets are folded. The sheet, the white marks are not obvious or basically unsatisfactory is the PET sheet. But this method is also invalidated, because the changes of the PVC production formula can make the creases no longer obvious. For example, the M61 with 513 imported from Japan will be better, and the folding will be obviously diluted, so I have to judge other judgments. You can make more accurate judgments.

3.Burning method

Based on the first method, upgrade and identify, and start from the combustion state to distinguish. Cut a piece of material and lighten up with a lighter to burn the black smoke and roll. Once the lighter is extinguished, it will extinguish it. At the same time, the stimulating taste is heavy. The black crystal on the edge of the burning is PVC sheet. After leaving the fire source, the PET sheet is also burned under the flame. It is very small and light. After the fire source is removed, the burning edges are relatively smooth and colorful, and the taste is light. PET sheets are polyester, and lipids are easily degraded and naturally flammable.