Question: Why are there bubbles in PET carrier tape production?
Answer: PET is a crystalline polymer material.
As a kind of transparent plastic, due to the high light transmittance, the surface quality of plastic products must be strict, and there must be no defects such as spots, pores, whitening, fog, discoloration, black spots and poor gloss.

Therefore, great attention and strict requirements are paid to in the production process. Secondly, due to the high melting point and poor fluidity, the probability of adverse phenomena is relatively high, We must pay great attention to all kinds of work. In the overall processing process, strict and even special requirements are put forward for raw materials, equipment, molds and even products.

Therefore, the preparation and drying of raw materials may affect the transparency of products due to any impurities in plastics. Therefore, in the process of storage, transportation and feeding, attention must be paid to sealing to ensure that the raw materials are clean, especially the raw materials contain water. Heating will cause the deterioration of the raw materials, so it must be dried.

The input air in the drying process must be filtered and dehumidified to ensure that the raw materials will not be polluted. If the raw material contains water, bubbles will appear in the product, which will seriously affect the color of the product and even brittle.