TRIM – Thin Recess Injection Molding

Ultra-light-weight injection molded parts are developed with StackTeck’s new technology called TRIM™.

Thin Recess Injection Molding (TRIM™) uses an advanced approach to thinwall out portions of the wall section well beyond the conventional thinwall packaging approach used for polyolefins with high melt flow indexes. TRIM™ involves molding ultra-thin panels with flow leaders that assist with part filling and maintain part strength.

Rectangular Container example

This 32 oz. TE container has a flow length of 5.74 inches, and with thin recess areas covering half of the part’s side wall and bottom, an ultra-thin panel thickness of 0.011 inches was achieved. Conventional thinwall part design normally assumes a maximum L/T ratio of 300 (i.e. ratio of flow length to average wall thickness). Using TRIM™, it has been demonstrated using a 32 oz. rectangular container design, that large areas of the part can be thinned out which correspond to an L/T ratio of over 500. Part weight savings that can be achieved using this technology are in the range of 10-40%.