LSR THERMOPLASTIC COMBINATION PARTS IN TWO-COMPONENT INJECTION MOLDING

This paper presents research in the field of overmolding which is an important technique within multi-component injection molding. Two different materials are injected via two separate gating systems into the cavity sections. The resulting part consists of two layers which lie next to each other or on top of each other. The main focus of the research of these compounds is on the adhesion between the two components, which up to now could not be predicted or determined sufficiently - especially regarding the influence that process parameters have on the adhesive strength of the parts. This paper presents compounds made of LSR and thermoplastics, giving detailed description of the materials and of different ways how to determine the adhesive strength of rigid flexible combinations.