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US 6,039,101 AGranted
Cutting and creasing apparatus
AssigneeKorpak Limited
InventorRobin MacKinnon
Life of this patent
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AssigneeKorpak Limited
InventorRobin MacKinnon
Estimating the term…
An apparatus for the cutting and creasing of plastics material sheet is disclosed which comprises a cutting and creasing tool and a corresponding plate arranged for mutual contact characterized in that the plate is free of raised surfaces and is covered with a plastic material, preferably nylon. Additionally, an apparatus for preheating corrugated plastics sheet material is described which comprises a flat bed portion adapted to receive a stack of precut corrugated sheet material blanks with their direction of corrugation aligned, heating means at at least one end of the stack, and fan means at at least one end of the stack, the heating and fan means being arranged such as to direct heated air along the corrugation of at least some of the sheets in the stack and back via the remainder of the sheets in the stack in an endless loop.
An apparatus for the welding, cutting and creasing of plastics material sheet which comprises a heated cutting and creasing tool and a corresponding plate arranged for mutual contact characterised in that the plate is free of raised surfaces and is covered with two layers of a resilient material, at least the outer layer being replaceable.
Dependencies are inferred from the claim text.