DETERMINING THE INFLUENCE OF THE ROUGHNESS AT THE CONTACT SURFACE FOR THE INJECTION MOULD BI-COMPONENT PARTS

摘要

The purpose of this paper-work is to present the practical experiments to define the influence of the roughness at the contact surface between two thermoplastics polyurethanes. Thirst polyurethanes it is a soft plasticity material and the second is very rigidly or hard polyurethane. The adhesive between these two materials it is very important for the bi-components injection mould parts. These parts obtained with bi-components mould injection technologies are very complex because their combined multi characteristic of different materials.