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注塑模具厂家对结晶型和非结晶型塑料如何处理?

来源:http://www.sdlqmj.com/ 日期:2022-04-30

  注塑模具加工厂的模具应根据成型不同的塑料品种,设置模具冷却或加热装置的模温控制系统,那么注塑模具厂家对结晶型和非结晶型塑料如何处理?
  The mold of the injection mold factory should be set up according to the different plastic varieties of the mold cooling or heating device of the mold temperature control system, so how to deal with the crystallized and amorphous plastic of the injection mold manufacturer?
  由于结晶型塑料具有冷却时施放热量多、冷却速率快、结晶度低、收缩小和透明度高的特点,成型时需要充分冷却。结晶度与注塑件壁厚有关,注塑件壁厚小时冷却快、结晶度低、收缩小和透明度高。
  Due to the characteristics of crystalline plastic cooling heat release, cooling rate, low crystallinity, shrinkage and high transparency, molding needs to be fully cooled. Crystallinity is related to the wall thickness of injection molded parts. When the wall thickness of injection molded parts is small, cooling is fast, crystallinity is low, shrinkage and transparency are high.
  反之,注塑件壁厚大时冷却慢、结晶度高、收缩大以及物理性能和力学性能好,所以结晶性塑料须按照要求控制模温,一般结晶型塑料为不透明或半透明,如聚酰胺(PA)。非结晶型塑料为透明的,如有机玻璃。但也有例外,如结晶型塑料聚。
  On the contrary, when the wall thickness of injection parts is large, cooling is slow, high crystallinity, shrinkage and physical and mechanical properties are good, so the crystalline plastic must be controlled in accordance with the requirements of the mold temperature, general crystalline plastic is opaque or translucent, such as polyamide (PA)。 Amorphous plastics are transparent, such as plexiglass. But there are exceptions, such as crystalline plastic polymer.
  此外,注塑模具加工厂对成型注塑件主浇道长的模具,需要采用加深型浇口套和热流道来提高熔体充模的温度,用于改善塑料熔体的流动性。对于流程长的厚壁或成型面积大的注塑件,为了保证塑料熔体的充分填充,应考虑设置加热装置:而对薄壁注塑件,可依靠模具自身的散热而不需要设置冷却装置。
  In addition, the injection mold factory needs to use deep gate sleeve and hot runner to improve the melt filling temperature and improve the fluidity of plastic melt for the mold with long main gate of injection molding parts. For injection parts with long thick wall or large molding area, in order to ensure full filling of plastic melt, heating device should be considered. For injection parts with thin wall, cooling device is not needed to rely on the heat dissipation of the mold itself.
  而济南注塑加工厂家对于黏度低与流动好的塑料,如聚苯乙烯(PS)、聚氯乙烯(PVC)、聚乙烯(PE)、聚酰胺(又称尼龙PA)和聚丙烯(PP)等黏度低的塑料,需对模具加装冷却装置,一般情况下是采用温水冷却;为了缩短冷硬固化的时间,也可采用冷(室温)水冷却。
  And Ji 'nan injection molding manufacturers for low viscosity and good flow of plastic, such as polystyrene (PS), polyvinyl chloride (PVC), polyethylene (PE), polyamide (also known as nylon PA) and polypropylene (PP) and other low viscosity plastic, need to add cooling device for the mold, under normal circumstances is the use of warm water cooling; In order to shorten the time of cold and hard curing, cold (room temperature) water cooling can also be used.
  注塑模具厂家对结晶型和非结晶型塑料如何处理?以上便是处理的方法,如果您还存有什么疑问,可以通过网站www.sdlqmj.com联系我们咨询。
  How do injection mold manufacturers deal with crystalline and amorphous plastics? The above is the way to deal with, if you still have any questions, you can contact us through the website www.sdlqmj.com.

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