What Is Plastic Injection Molding?
Plastic injection molding involves melting granular plastic pellets into a liquid form and then compressing this liquid into the empty cavity of a mold tool. The plastic will retain the shape of the mold as well as the surface texture of the walls of the cavity. After an optimized injection and cooling phase, the now solidified plastic part is ejected and the molding cycle is repeated. This molding cycle can take from as little as a few seconds to several minutes depending upon part size, molding resin and part design.
Material for RIM
General common resin : polyurethane resin, vinyl ester, amide ester resin, unsaturated resin, epoxy resin and traditional composite material, etc.
Normally material : HD-PU4210，DCP-RIM，AXSON-RIM 875 ,etc .
PS:The curing time of RIM process is mainly by the molding material formulation and product size decision. In addition, RIM products need going on the second curing after release from the mold . And as RIM process is fast（15-30 minutes/piece) and high-precision , it fit to produce large quantity and huge size products ,and the size of biggest casting part is 2000mmX1200mmX1000mm，for 10KG .
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