This whole needle valve type hot runner injection under low pressure, the injection molding products in contraction deformation is smaller.

针阀整体式热流道在低压下注射使注塑品在收缩时变形更小。

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This whole needle valve type hot runner injection under low pressure, the injection molding products in contraction deformation is smaller.

针阀整体式热流道材料浪费少，注塑产品的质量得到改善并更加稳定。

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Several factors affecting on contraction deformation of thick section injection moulding articles were investigated. Some practical proposals were given.

探讨了影响注射成型厚壁塑料制品收缩变形的一些因素，提出了对实际生产有指导作用的建议。

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