Methods : PGA non woven mesh was put into the mold of trachea cartilage ring and enforced with polylactic acid.
方法：按气管软骨环的形状制备模具，将聚乙醇酸无纺网置于模具中，用聚乳酸塑形；
2
Traditional mold structure removes the set ring work piece after molding machine used outside special hydraulic machine equipped with pull model kit.
传统的模具结构是采用模压成型后机外利用专用液压机装备拉开模套，取出集电环制件。
3
One of the key-technologies of guiding device investment casting is getting internal ring, external ring and blade unit by splitting integral guiding device part for wax-mold design.