Patent ID: 9713906
Date: 2017-07-25
CPC Classifications: B29C,B29D,B31B,Y10T

Claim:
1. 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.