Speaker enclosures roto-molded from polyurethane

Audio speaker enclosures for cars and other applications are being roto-molded in a single piece at room temperature and normal atmospheric pressure from Baytec ENC 140P and 120 P modified polyols from Bayer Corp. Power Composites makes the speaker enclosure for the high-end car audio system after-market. The company was looking for a way to accommodate bigger sound systems and speakers within the vehicle’s interior. To do so required speaker enclosures with unusual, non-oval shapes that would fit into unused spaces inside cars, vans and light trucks. President of Power Composites, Timothy Rusche, created a hollow mold of the exact exterior dimensions he needed, poured the polyurethane mixture into the mold through a filling hole, and rotated the mold through two axes so the entire interior surface of the mold was coated. When the polyurethane cured, he had a hollow enclosure.

Bayer Inc. 800/668-2554