The temperature needed to mold plastic varies depending on the type of plastic and the specific molding process. For the crystalline material mentioned in the reference, the molding temperature should be strictly controlled not to exceed 475 degrees Celsius. The optimal molding temperature for this material is between 350-400 degrees Celsius. Above 475 degrees, the material is prone to discoloration or bubbles.
The reference specifies that this crystalline plastic material has low moisture absorption and can be processed using typical thermoplastic methods. However, it has poor fluidity and is prone to decomposition, releasing corrosive gases. Therefore, maintaining the correct temperature is crucial to prevent degradation and ensure the quality of the molded product. The mold itself should be heated to a temperature between 150-200 degrees Celsius to facilitate proper molding and to prevent issues related to the material's corrosive properties on the metal mold.
In addition to temperature control, the gating system (which controls the flow of material into the mold) should be designed to have low resistance to material flow. This is important because the material's poor fluidity can lead to difficulties in filling the mold completely if the gating system is not optimized.
For long-term production, the mold needs to be electroplated with chrome due to the corrosive effect of the molten material on metal. This helps in maintaining the integrity of the mold and ensures consistent product quality over time.
Overall, the molding of this specific plastic material requires careful control of temperature and mold design to ensure that the material does not decompose and that the final product is free from defects such as discoloration or bubbles. The detailed specifications provided in the reference highlight the importance of precision in thermoplastic processing to achieve desired outcomes.
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