Selection of plastic materials.baby pacifier bibs wholesale

　　So far, tens of thousands of resin types have been reported, and no fewer than thousands of industrial production have been achieved. The selection of plastic materials is to choose a suitable variety among many resin varieties. At first glance, there are too many plastic varieties for us to choose, and there is a dazzling feeling. But in fact, not all resin varieties have been specific applications. The selection of plastic materials we refer to is not an endless choice, but a selection of commonly used resin varieties.

　　Plastic material selection principle:

　　The adaptability of plastic materials; 1. Performance comparison of various materials; 2. Conditions that plastic should not be selected; 3. Select suitable conditions for plastic.

　　The performance of plastic products 1. The conditions of use of plastic products a. The force of plastic products; b. Electrical properties of plastic products; c. Dimensional accuracy requirements of plastic products; d. Permeability requirements of plastic products; e. Transparency requirements for plastic products; f. Appearance requirements of plastic products. 2. The use environment of plastic products a. ambient temperature; b. Ambient humidity; c. Contact medium; d. Ambient light, oxygen and radiation.

　　1. The machinability of plastics; 2. The processing cost of plastics; 3. Waste from plastic processing.

　　1. The price of plastic raw materials; 2. Service life of plastic products; 3. Maintenance costs of plastic products. 5. Sources of plastic raw materials. In the actual selection process, some resins are very close in performance and difficult to distinguish.

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