Fluidity of thermoplastics elastomers

Abstract

Polymer injection molding is the most used technology of polymer processing nowadays. It enables the manufacture offinal products, which do not require any further operations. Working of shaping cavities is the major problem involving not only the cavity of the mold itself, giving the shape and dimensions of the future product, but also the flow pathway (runners) leading the polymer melt to the separate cavities. The runner may be very complex and in most cases takes up to 40% volume of the product itself (shape cavity). This work gives the results of studying the influence of the quality of flow pathway surface and influences of other technological parameters on the polymer melt flow.