Abstract: Disclosed is a container especially adapted for use in storing and heating comestibles intended for final preparation in microwave ovens. The container comprises a molded pulp tray, having a plastic film, preferably a polyester, adhered to its product-contacting surfaces. The container exhibits high strength and excellent product protection, but yet is low in cost. The process for making the container takes advantage of the porous nature of the pulp tray by drawing a vacuum directly through the tray to draw a film of heated plastic into adhering contact. The film is preferably extruded as the tray, carried in a vacuum mold, passes directly under the extruder.

Abstract: The invention concerns an impact compactor comprising a noncircular roller, draft arms positioned on both sides of the roller, axle means supported about the draft arms and on which the roller is mounted for rotation, a draw bar pivotally connected to the draft arms for towing the roller, and a gear and pinion linkage between the roller and the draft arms. Outer gears may be fast with each side of the roller. Each draft arm may support a stub shaft on which a pinion is mounted to mesh with the outer gear and to co-operate with a ratchet mounted on the draft arm. A buffering device can be provided between the draft arms and the draw bar.