与瓶坯注塑截然不同，瓶盖的注塑是薄壁注塑。
Injection moulding of bottle CAPS is distinctly different from that of preforms in that it is thin-wall moulding.
基于商用CAD软件生成的用STL文件表示的薄壁注塑件实体模型，给出了表面有限元网格模型的生成方法。
Based on a STL file of thin-wall part, which can be produced by almost each commercial CAD software, an algorithm is proposed for Mid-plane mesh model extraction.
使薄壁成型提高注塑流动性，提高产品品质和强度。
Make thin walls formed, so as to improve the fluidity in injection molding and product quality and strength.
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