MC 尼龙又称浇铸尼龙，它是在常压下，将熔融的原料己内酰胺单体C6H11NO用碱性的物质作催化剂，与活化剂等助剂一起制成待聚单体，直接注入预热到一定温度的模具中，使物料在模具内很快地进行聚合反应，凝结成坚韧的固体胚件，再经过有关工艺处理，得到预定的制品。MC尼龙制品作为工程塑料之一，“以塑代钢、性能卓越”，用途极其广泛。它具有重量轻、强度高、自润滑、耐磨、防腐，绝缘等多种独特性能是应用广泛的工程塑料，几乎遍布所有的工业领域。
MC nylon, also known as cast nylon, is a melted raw material, caprolactam monomer C6H11NO, used as a catalyst, with activator and other additives to prepare monomers, which are directly injected into the preheated die to a certain temperature, so that the materials can be quickly polymerized in the die to form a tough solid. The embryo parts are then processed by relevant processes to obtain the predetermined products. As one of the engineering plastics, MC nylon products have been widely used because of its excellent performance in replacing steel with plastics. It has many unique properties, such as light weight, high strength, self-lubrication, wear resistance, anti-corrosion, insulation and so on. It is widely used in engineering plastics, almost all industrial fields.