The difference between PVC plastic pellets and PU plastic pellets

May 17, 2022

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PVC plastic pellets, namely polyvinyl chloride, are thermoplastic resins polymerized from vinyl chloride under the action of an initiator. They are mainly yellowish translucent particles with excellent weather resistance, colorability, stability, migration, etc. Performance, generally used in the production of pipes, doors and windows, stationery, toys, packaging, wire and cable and so on. PU plastic pellets are polyurethane, abbreviated as "polyurethane", which has the properties of plasticity, spinnability, tear resistance and excellent hand feeling. It is widely used in synthetic PU leather, PU high imitation flowers and other fields. During the production and processing of PVC plastic granules, firstly, the PVC plastic granules are hot-melted and stirred into a paste, and then evenly spread on the T/C knitted fabric foundation according to the specified thickness, and then entered into the foaming furnace for foaming operation. , so that it can be applied to different softness requirements of different products. In addition, a series of surface treatments must be carried out according to specific product requirements. The production process of PU plastic pellets is relatively more complicated. It has properties such as inflection resistance, stretch resistance, air permeability, and softness. However, due to the difference in cost and raw materials, its price is relatively higher. , usually about two to three times that of PVC plastic pellets. In daily life, it can be distinguished by touch or by burning with flame. PU plastic granules are softer, while PVC plastic granules are harder. If the method of burning is adopted, the taste of PU plastic granules should be the same. The taste is much lighter than that of PVC plastic pellets.



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