What are the recycling ways of BOPP color thermal synthetic paper?
The recycling method of BOPP color thermosensitive synthetic paper can be mainly divided into two categories: physical recovery and chemical recovery. The following are specific ways to recycle:
First, physical recycling
1. Mechanical recycling:
Crushing and screening: The waste BOPP color thermal synthetic paper is broken and processed to remove impurities through screening and classification.
Cleaning and drying: Clean the broken material, remove the attached stains and residues, and dry it.
Re-granulation: the material after cleaning and drying is re-granulated through the extruder to obtain recycled particles. These recycled particles can be used as raw materials directly for the production of new BOPP films or other plastic products to achieve resource recycling.
Physical recovery method is a kind of recovery method widely used in industry at present, which has the advantages of low cost and simple operation. However, for color thermosensitive synthetic paper, due to the fact that it may contain special thermal coatings or other additives, these ingredients may have an impact on the performance of the recycled material during the recycling process, so proper treatment is required to ensure the quality of the recycled material.
Second, chemical recycling
The chemical recycling method uses chemical means to decompose the waste BOPP color thermal synthetic paper into small molecular compounds or monomers, and then re-used to produce new plastic products or other chemicals. Specific chemical recovery methods may include thermal cracking, catalytic cracking, solvent dissolution, etc.
Thermal cracking: Heating waste plastics to cracking temperatures at high temperatures causes them to decompose into small molecular gases (such as hydrocarbon gases) and liquids (such as tar). These small molecules of gas and liquid can be further processed into fuel oil, chemical raw materials and so on.
Catalytic cracking: The catalyst is added on the basis of thermal cracking to reduce the cracking temperature and improve the selectivity and yield of cracking products. Catalytic cracking products can also be used to produce fuel oil or chemical feedstock.
Solvent dissolution: The use of specific solvents to dissolve waste plastics, and then through precipitation, distillation and other methods to separate monomers or oligomers. These monomers or oligomers can be reused in polymerization reactions to produce new plastic products.
It should be noted that although chemical recycling methods can achieve the efficient use of waste plastics, their costs are relatively high and the process is complex. In addition, for color thermosensitive synthetic paper containing special additives, the impact of these additives on the recovery process and the performance of the recovered product needs to be considered during the chemical recovery process.
In summary, the recycling methods of BOPP color thermal synthetic paper mainly include two categories: physical recycling and chemical recycling. In practical applications, appropriate recycling methods can be selected according to specific conditions to maximize the utilization of resources and reduce environmental pollution.
