Analysis of back injecting real wood veneers using engineering polymers in an injection moulding process

Abstract

An investigation was carried out to establish whether engineering polymers could be back injection moulded onto real wood veneers for the manufacture of vehicle trim and to assess the basic adhesion and dimensional performance of the moulded components. Engineering polymers evaluated were a talc-filled PP, an ABS/polyamide blend, a glass fibre-filled ABS/polyamide blend, an unfilled polyamide-6,6 and a polycarbonate/PBTP blend. The components were tested using the the DIN 53255 adhesion delamination test and the relationship between component distortion and shrinkage at both post injection moulding and post cooling studied. The glass fibre-filled ABS/polyamide blend exhibited the lowest measured shrinkage value and produced the flattest samples. 13 refs