PET release film is made of polyethylene terephthalate (PET) as the main raw material, which is characterized by good temperature resistance, dimensional stability, non-toxic and odorless characteristics, and is widely used in packaging, electronics, automobiles, printing and other industries. However, with the continuous increase in production and use, the discarded PET release film has also caused a certain pressure on the environment, and how to carry out effective ** has become an important issue.
PET release film** should follow the principles of reduction, recycling, and harmlessness. In practice, the first step is to collect and sort out the waste PET release linersDuring the collection process, attention should be paid to the separation of attached impurities to improve the efficiency and quality of subsequent processing. The sorted PET release film can be reused by physical or chemical methods**.
The physical method is mainly through the process of crushing, washing, drying and re-granulation, and the waste PET release film is processed into recycled pellets, which are used to make fibers or as raw materials for plastic products. This method is less expensive and simple to operate, but it may degrade the performance of the product due to polymer degradation.
Chemistry breaks down PET into its original monomer or other easy-to-handle compounds through chemical reactions, which are then polymerized to produce new PET materials. This method can guarantee the quality of the material, but it is relatively expensive and requires specialized equipment and technical support.
In addition, the biodegradation method, that is, the use of microorganisms to break down the polymer chain in the PET release film, can also be explored, which is environmentally friendly, but is still in the laboratory research stage, and there is still a certain distance from practical application.
The use of PET release film can not only reduce environmental pollution and save resources, but also help promote the development of circular economy. However, the current proportion of utilization is not high, which requires the joint efforts of enterprises, enterprises and all sectors of society, through legislation, financial support, strengthening technology research and development and popularizing awareness and other measures, to jointly promote the effectiveness of PET release film and promote the sustainable development of green manufacturing and consumption.