Injection moulds for PPR pipe fittings
The injection mold is a production tool for plastic products; it is also the tool to give plastic product complete structure and accurate size. Injection molding is a new processing method used in mass production of some complicated shape components. Specifically refers to the heat melting the material by the high-pressure injection mold cavity, after cooling to form products. According to the forming characteristics, injection mould can be divided into thermosetting and thermoplastic plastic mold; according to the forming process of mold, it is divided into calendaring mold, blowing mold, casting mold, hot pressing die (mold), injection mold, the hot pressing die can be divided into overflow type, semi flash, non-overflow type, injection mould can be divided into cold runner mold and hot runner mold according to casting system; according to the loading and unloading method can be divided into two kinds of mobile and fixed type.