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US 9,713,906 B2Granted
Cup-forming process and machine
AssigneeBerry Plastics Corporation
InventorsKody A Chapman, Randy A Bowlds, Charles T Wallace
Life of this patent
Estimating the term…
Abstract
A cup-forming machine includes having a male mandrel and a female receiver. The male mandrel uses a cup body blank and a floor blank to form a body of a cup. The female receive receives the body and forms a rolled brim on the body to establish a cup.
Claims42
A method of making a plastic cup, the method comprising the steps of
- providing a plastic cup body blank and a the cup consist of a plastic floor blank, each of the cup body blank and the floor blank being made from insulative cellular non-aromatic polymeric material,
- heating the cup body blank,
- heating a male mandrel to provide a heated male mandrel,
- folding the cup body blank around the heated male mandrel after heating the cup body blank,
- transferring heat from the heated male mandrel to the cup body blank to minimize stress in the insulative cellular non-aromatic polymeric material so that formation of visible imperfections in the cup are minimized during the folding step,
- joining an outer tab of the cup body blank and an inner tab of the cup body blank together to form a cup side wall,
- coupling the floor blank to the cup side wall to form a cup body on the heated male mandrel,
- warming a female receiver to provide a heated female receiver,
- transferring the cup body from the heated male mandrel to the heated female receiver, and
- curling a top edge of the cup body to form a rolled brim on the cup body to establish a plastic cup.
7 more elements
Dependencies are inferred from the claim text.