Resin transfer molding (RTM) refers to a composite material molding process in which resin is injected into a preform and cured together to form an overall structure. This process is increasingly used in the low-cost molding technology of advanced composite materials.

HP-RTM

High-pressure resin transfer molding process, referred to as HP-RTM molding process. It refers to the use of high-pressure pressure to hedge and mix resin and inject it into a vacuum-tight mold pre-laid with fiber reinforced materials and pre-set inserts, and then flow the resin to fill, impregnate, cure and demold to obtain a molding process for composite products. . The high-pressure RTM process realizes the mass production of carbon fiber reinforced plastic parts, which greatly improves production efficiency.

C-RTM

The C-RTM molding process is to move the mold up by 0.5~1mm before the resin injection in the HP-RTM process technology to increase the gap of the sealed cavity. The mold can have a wider runner and reduce the resin flow resistance. After the glue is injected, the mold is completely closed under high pressure. The resin system flows with the closed pressure to fill the mold. And the forming process of forming the product. This process can satisfy parts with a higher fiber volume content. Generally, in order to meet such a high manufacturing process, higher requirements are put forward on the performance of the press, such as the four-corner leveling process.