초록 ▼

A method of forming a paper container uses a three ply corrugated material having at least one inner or outer sheet of paper that may be stretched or compressed circumferentially to permit subsequent rolling of the corrugated material about a mandrel. A flattening of the upper and lower edges of the

A method of forming a paper container uses a three ply corrugated material having at least one inner or outer sheet of paper that may be stretched or compressed circumferentially to permit subsequent rolling of the corrugated material about a mandrel. A flattening of the upper and lower edges of the corrugated material permit rolling and seaming operations to be used to assemble the bottom to the cup and to form a lip in the upper edge.

대표청구항 ▼

[ I claim:] [1.] A method of manufacturing a paper container from a premanufactured, substantially planar corrugated paperboard having a first outside paper layer, a second outside paper layer glued respectively face to face on either side of a center corrugated paper layer to laminate the center co

[ I claim:] [1.] A method of manufacturing a paper container from a premanufactured, substantially planar corrugated paperboard having a first outside paper layer, a second outside paper layer glued respectively face to face on either side of a center corrugated paper layer to laminate the center corrugated paper layer between the first outside paper layer and the second outside paper layer, the center corrugated paper layer having flutes along a vertical axis comprising the following sequential steps of:(a) cutting a blank from the premanufactured corrugated paperboard;(b) rolling the cut blank of corrugated paperboard along a circumferential axis crossing the vertical axis; and(c) attaching a bottom wall to a lower curved edge of the rolled and cut corrugated paperboard blank.