Short Shot Process
Short Shot Process
Assisted Injection Molding (AIM) is part of a family of technologies that are operated with plastics processing methods to improve product quality and significantly reduce cost. The technologies include the injection of gas or water at high pressure into plastic in an injection mold. This cores out sections of the part, leaving hollow areas which lower part weight and cycle time.
Injection phase
• 70% ± 20% of the volume of the cavity is dosed and injected
• According to process, the gas injection occurs via machine nozzle, injector modules in the sprue or in the molded piece
Gas injection phase
• This begins shortly before the termination of the injection phase, in order to avoid switchover markings
• Gas fills the cavity and drives the melt front forward
• Targeted hollow spaces form in the molded piece
Gas hold-pressure phase
• The gas pressure is retained after the completefilling of the cavity, until the moldedpiece is stable
• Relief of the gas pressure after solidifying of the melt
