With the continuous growth of the plastics industry, the market demand for plastics is getting higher and higher. In the production process of the product, the pa66 raw material of our Xiamen LFT composite plastic Co., Ltd. is added with long fiber, which is suitable for injection and extrusion processes. So what details should be paid attention to in the injection molding process of long fiber pa66?
Consider the drying problem: the package is completely sealed and usually does not require drying. If there is slight humidity, it is recommended to dry in hot air at 80 °c.
Melt temperature: 270 ~ 299 °c. Special additives require additional adjustment of the actual temperature.
Mold temperature: It is recommended to be between 66 °c and 124 °c. The mold temperature will affect the crystallinity and effect of the finished product, and the crystallinity will affect the physical properties of the finished product. Adjust according to the mold structure.
Injection pressure: usually between 34-124mpa, depending on the product structure, injection port position, injection temperature and other conditions.
Runner and gate: It is best to use a hot runner. The rubber port should be larger without a hot runner, and vice versa. Other methods can refer to our technology.
Pa66 has a higher melting point in polyamides, and can still maintain strong strength and rigidity at higher temperatures after modification. It should be noted that pa66 still has water absorption after molding, which should be noted in the selection of the use environment.
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