Plastic bags are indispensable items in our daily life. It can hold anything. There are all kinds of plastic bags now, so there are all qualified and unqualified ones. Now plastic bag manufacturers teach you how to improve the transparency of plastic bags. To improve the transparency of plastics is to reduce the crystallinity of PE plastic bags, control the quality of cleanliness, increase the refractive index, and reduce the birefringence. Adding to improve the transparency of plastic bags, nucleating agents can be added to increase the transmittance of transparent resin, it can promote the crystallization of small molecular substances, can play the role of crystal nucleus in the resin, measure the transparency of some plastics is good Bad, there are many standards, such as transmittance, haze, refractive index, birefringence, and dispersion. In addition, the bidirectional stretching improves the transparency of the plastic, which can break the original crystal particles in the product and make the crystal size smaller, so as to achieve the purpose of improving the light transmittance.