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Invention Publication
CN105102199A 由PET或PEN来制造高度结晶成型部件的方法 失效 - 权利终止

由PET或PEN来制造高度结晶成型部件的方法
Abstract:
本发明涉及一种由选自聚对苯二甲酸乙二醇酯(PET)和聚对苯二甲酸乙二醇酯(PET)和聚萘二甲酸乙二醇酯(PEN)的聚合物，通过使用包含模具的压制工具来制造成型部件的方法，所述模具具有腔室和冲头，所述冲头具有与该腔室对应的外表面。该方法包括以下步骤：a)将聚合物颗粒置于加热到压制温度的模具的腔室中，其中该聚合物的特性粘度是至少0.45dL/g和该颗粒的平均粒度是0.5-4000μm，b)将该颗粒在模腔中在至少3MPa的压力加压，同时将模具温度保持在压制温度，和c)从模腔中取出该成型部件。当该聚合物是PET时，压制温度是235-259℃。当该聚合物是PEN时，压制温度是250-275℃。
Abstract(English):

The present invention relates to a process for making a shaped part from a polymer selected from polyethylene terephthalate (PET) and polyethylene terephthalate (PET) and polyethylene naphthalate (PEN) by using a compacting tool comprising a die having a cavity and a punch having an outer surface corresponding to the cavity. The process comprises the steps of: a) placing particles of the polymer in the cavity of the die heated to a compaction temperature, wherein the polymer has an intrinsic viscosity of at least 0.45 dL/g and the particles have an average particle size of 0.5-4000 mu m, b) pressing the particles in the die cavity at a pressure of at least 3 MPa while maintaining the temperature of the die at the compaction temperature and c) removing the shaped part from the die cavity. When the polymer is PET, the compaction temperature is 235- 259 DEG C. When the polymer is PEN, the compaction temperature is 250-275 DEG C.

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