Graham Packaging Company, L.p.

Graham Packaging, L.p.

Robert L Diller

Frank E Semersky

John W Tobias

Crawford Lyons

A blow-molded plastic container and a separately formed injection-molded plastic handle adapted to be ultrasonically welded together. A pattern of energy directors is located on one of the confronting welding areas of the handle and the container sidewall. The handle has an elongate grip defining a grip centerline and the energy directors are located on both sides of the grip centerline adjacent opposite ends of the elongate grip.

Plastic container and non-integral handle

A method and apparatus which allows blow-molded plastic containers to be manufactured at high rates of production independent of ambient environmental conditions. The method and apparatus eliminate the need to make adjustments to blow-molding oven operating parameters when environmental conditions change and reduce defects such as caused by water spots. The method includes the steps of flowing ambient air over cooling coils to remove moisture, heating the air to a constant pre-determined temperature and delivering the conditioned air to the blow-molding oven. The apparatus includes a variable speed blower which forces ambient air at a predetermined volumetric flow rate over cooling coils and an electric heater to provide the blow molding oven with a constant volumetric flow rate of constant temperature and low humidity air.

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Jacobus, PA, United States of America

Robert L Diller