The PVC heat shrink film blowing machine is a new product carefully designed based on the relevant information of advanced blowing machines in the world and combined with the production situation in China. This machine is suitable for products formed by blown film process of PVC plastic resin using tube film method. This type of heat shrinkable film has the advantages of good transparency, good glossiness, and high shrinkage efficiency. Therefore, it is widely used for the outer packaging of products such as food, beverages, tea, glass products, handicrafts, sanitary ware, cosmetics, electronic products, etc.