Single layer high transparency film blowing machine is a machine extruded by a screw. If you make convenience bags in the market, the quality of low-pressure bags made by high-low press is limited. Single layer film blowing machine is a die extrusion film blowing machine. Generally, the film produced is used for common plastic packaging. It depends on the raw materials. There are PE film blowing machine, PP film blowing machine, PVC film blowing machine, etc. Multi layer coextrusion film blowing machine is a film extruded and compounded by multiple dies with different raw material ratios at the same time. It is generally used for the packaging of high-grade products. This film can be widely used for light and heavy packaging because of its good barrier, fresh preservation, moisture prevention, frost prevention, oxygen isolation and oil resistance. Such as all kinds of fresh fruits, meat food, pickles, fresh milk, liquid drinks, medical supplies, etc.