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Plastic bag application and identification
- Sep 30, 2018 -

The plastic used in plastic bags is actually ordinary plastic. If it is from the perspective of synthetic resin, it has thermoplastic and thermosetting properties. Thermoplastic plastic refers to plastics that are still plastic after repeated heating. The raw materials are PE, PP, PVC, PS, ABS, PMMA, POM, PC, PA, etc. Thermosetting plastics are plastics that harden after heating, so they cannot be heated repeatedly. As for which one to choose, it is determined by the actual situation and the use requirements.


Plastic, which is a plastic material, is a synthetic or natural polymer compound as the main component, which can be plasticized under certain conditions and the product can maintain the shape unchanged. For this material, it is necessary to know and master:

The plastic raw material, whose main component is a polymer compound matrix, is then added with some excipients or some additives for specific purposes to obtain the plastic product. This kind of material has good insulation for electricity, heat and sound, and has good insulation, sound insulation, sound absorption, vibration absorption and noise reduction performance, and has certain advantages in use.


Plastic bags, its application is very extensive from the current point of view, can be used in home appliances, mobile phones, PCs, medical equipment and lighting appliances, etc., for packaging and storage. And, from its development trend, it is also more and more extensive.


The identification of plastic bags, according to the professional introduction of this aspect, can be carried out from the specific aspects of appearance, use, density test, softening point or melting point, combustion test and comprehensive identification, so as to distinguish well from other materials. Open. In addition, since the process of this kind of bag is for injection molding, it is necessary to pay attention to the design of the injection molding process and the injection mold. With the right injection mold, you can get the product of the desired size, and then let the product be fully used, avoiding waste and economic loss to the user.