Insufficient injection is also called short shot. Short shot is the phenomenon of partly incomplete at the end of the material flow, or a part of the cavity filled with dissatisfaction, especially the thin wall area or the end area of the the runner when injection molding.
When the melt is cooled down without filling the mold cavity, or the melt does not fill completely after running into the cavity, it is called the short shot injection molding.

The main reason for short shot is that the flow resistance is too large, which makes the melt unable to continue to flow. The factors which impact the melt flow length including:
* wall thickness of parts,
* mold temperature,
* injection pressure,
* melt temperature and material composition.

If these factors are not handled properly, they will result in short shot.

Green Vitality Industry Co., Ltd offers high quality plastic injection molding services to meet the injection molding needs of any customer. We are engaged in a variety of industries mold and injection molding parts for more than 25 years.