Dependence of Basic Geometric Characteristics of Polymer Components on Parameters of Injection Molding and Gate Position

Dimensional injection molding process. This phenomenon leads to deviations, often to deformations that affect the final shape, dimensions and quality of the final component. It is difficult to completely avoid this phenomenon. In relation to the material used,component shape and construction tool, there are several influential factors. This paper analyzes the influence of melt temperature, holding pressure, injection velocity and gate position on geometrical characteristics - dimensional shrinkage. The material used to make the components is low density polyethylene (LDPE). The results of the research showed that by changing the holding pressure, injection velocity, melt temperature and gate position, dimensional shrinkage can be affected.