TABLE OF CONTENTS This is in many ways analogous to co-injection moulding as the resultant moulding has a skin and core configuration. However in this case the core injection process is used to selectively hollow out parts of the moulding. This process is primarily used for weight savings and cycle time reduction. The gas or water takes the place of polymer to produce a hollowed out moulding with a reduced section thickness.
Gas injection moulding has no standardised designations. Some common process terminology/trade names include: gas injection moulding technology (GIT), gas assisted injection moulding (GAIM), gas assisted injection moulding (GAIN ), gas interior pressure (German: Gas Innen Druck), gas injection process (GIP) and Koolgas , which is a variation of the standard gas injection technique using pre-cooled gas injection.
Water injection moulding (WIM) or water assisted injection moulding (WAIM) is much newer and less well established.
