These products are made of wear-resistant, oil-resistant PVC and high-strength dipped fabric. Special checkered profile belts are better suited for smaller wood panels. These belts will have square or diamond shaped pockets molded into the smooth PVC top cover.. Heavy Duty PVC conveyor belts are ideal in applications where smaller pieces of wood are being machined such as drawer panels, chair legs, and hardwood flooring, due to the more rigid cover surface.