​A short shots or insuficient workpiece fill is a molded part that is underfilled or not filled completely. Visually, this can be seen as sections, such as the last areas of the part to fill, or

Flashing is defined as excess material that has exceeded the boundary of a mold beyond the mold cavity. Flash can be found in a number of areas. The parting line is one of the more frequent locatio...

Jetting is a phenomenon that occurs in injection molding when molten plastic material flows through the gate and forms a wormlike formation without laying down a skinned surface. The formation beco

The role of the ejector pin is push the part from the mold after cooling. However, localized deformation can occur on the part as a result of the forces placed on the part by the ejector pins. This...

Dimensional stability problems occur when a part is inconsistent in part size or in part weig from shot to shor. Parts that are underweight can suffer in structural integrity; overweight parts can als

Delamination is a condition that exists when the surface skin of a molded part can be physically separated from the part, which can lead to a reduction in mechanical strength. lists causes and solutio

Workpiece brittleness is caused most often by a loss of molecular weight in the polymer material. A reduction in molecular weight results in a reduction of the mechanical properties of the material...

In comparison to nozzle drool, material at the nozzle can solidify and restrict and block the flow of material. This is found mostly during the cooling cycle of the process or if the injection molding