In fact, the difference lies in the raw materials. There are two sources of plastic raw materials: pure raw materials and recycled raw materials. The price of pure raw materials is higher than that of recycled raw materials, so the products produced by pure raw materials are higher than those produced by recycled raw materials. Distinguishing the quality of plastic raw materials is one of the basic abilities mastered by each manufacturer. Here is a brief introduction to the differences between the two raw materials
1. Pure raw material
Pure raw materials are extracted from petroleum without any reprocessing. Its characteristics are that the particles are milky white, crystal clear, free of any impurities, especially good physical properties and very easy to process. There are two ways to use pure raw materials in China, one is the major petrochemical companies in China, and the other is through import. The products produced from pure raw materials are generally colorless and odorless, with good luster, good elasticity and very soft feel, mainly for health and safety. Pure raw materials are generally used in food bags, roll bags and other food related packaging bags
2. Recycled raw materials
The sources of recycled raw materials are very wide and miscellaneous. The main sources are the waste from the production of convenience bags, domestic waste plastics, various packaging bags, etc. these wastes are sorted after recycling, then cut and melted at high temperature to make plastic particles. Due to the complexity and diversity of recycled wastes and different colors, the produced particles have various colors and no luster, Compared with pure raw material particles, it is very different, and the products produced can not be hygienic and safe. The products have color, no luster and rough feel. They are generally used for daily life and industry, not for food packaging.
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