The raw materials are different. The raw materials used by ordinary film blowing machines are usually petrochemical materials such as polyethylene (PE) and polypropylene (PP). These materials are not naturally degradable and may cause pollution to the environment; while biodegradable film blowing machines use biodegradable materials. Degradable materials, such as PLA (polylactic acid), PHA (polyhydroxy acid), etc., these materials can quickly decompose in the natural environment and reduce environmental pollution.
The manufacturing processes and processes are different. The manufacturing process of ordinary film blowing machines is relatively simple, mainly melting and extruding petrochemical materials into films; biodegradable film blowing machines require more precise control of every link in the production process, because the production of biodegradable materials is subject to More process and operating technology constraints.
Application prospects are different. The environmental pollution caused by the materials of ordinary film blowing machines cannot be ignored, and its application prospects are limited; while the materials used in biodegradable film blowing machines are biodegradable and will not cause pollution to the environment, so they have better application prospects.
Equipment features are different. The motor of the biodegradable film blowing machine is more powerful, the screw adopts a high-speed alloy screw, the temperature control is more precise, the frame is higher to provide a longer cooling stroke, and a double-port cooling air ring is used to achieve uniformity and high speed of cooling. . In addition, biodegradable film blowing machines require high precision in the selection of electrical appliances and induction probes. High-speed models are usually equipped with automatic rewinding systems to adapt to fast discharging speeds, while manual rewinding involves certain risks.
Product characteristics are different. The films produced by biodegradable film blowing machines are water-soluble biodegradable plastics such as PLA, PBAT, and PVA. These materials are widely used in liquid packaging, printing lamination, clothing and textile packaging, industrial product packaging and other fields. Bags made from biodegradable materials are stronger than a single layer and may have a double layer color effect.
