Polyamide 12 (PA12) nylon material Typical applications: water table and other business equipment, cable sets, mechanical cam, sliding mechanism and bearings. Injection molding conditions: Drying: humidity must be processed prior to 0.1%. If the material is exposed to the air storage, it is recommended to be dried in a 85C hot air for 4 to 5 hours. If the material is stored in a sealed container, then the temperature equilibrium after three hours can be used directly. Melting temperature: 240 ~ 300C; for the general properties of the material do not exceed 310C, the flame-retardant properties of the material do not exceed 270C. Mold temperature: For unreinforced material is 30 ~ 40C, the thin wall or large elements of 80 ~ 90C, the reinforced material is 90 ~ 100C. Increase in temperature will increase the degree of crystallinity of the material. Precisely control the mold temperature for PA12 is very important. Injection pressure: maximum to 1000bar (recommended to use low pressure and high melting temperature). Injection speed: high speed (for glass additive material better). Runners and Gates: For non-additive materials, due to lower material viscosity, flow channel diameter should be about 30mm. Material requirements for enhanced large passage diameter of 5 ~ 8mm. Runner shape should all round. Sprue should be as short as possible. You can use various forms of the gate. Large plastic parts do not use a small gate, which is to avoid excessive pressure on the plastic parts or excessive shrinkage. Gate thickness equal to the best and the thickness of plastic parts. If you are using submarine gates, the minimum recommended diameter of 0.8mm. Hot runner mold is very effective, but requires very precise temperature control in order to prevent leakage or solidification material in the nozzle. If you use the hot runner, gate size should be smaller than the number of cold runner. Chemical and physical properties: PA12 is butadiene linear, semi-crystalline - crystalline thermoplastic material. Its characteristics and PA11 similar, but different crystal structures. PA12 is a good electrical insulator and does not like the other polyamide insulation due to moisture effects. It has excellent impact resistance machines chemical stability. PA12 has many improved varieties plasticizing features and enhancements in the area. PA6 and PA66, and compared these materials have a lower melting point and density, with a very high moisture regain. PA12 of strong oxidizing acids without resistance. PA12 viscosity depends on humidity, temperature and storage time. It's good liquidity. Shrinkage of between 0.5% to 2%, depending on the variety of materials, wall thickness and other process conditions.