Envelopes – wrappers – and paperboard boxes – Paperboard box – Box material includes a coating or a nonpaperboard...
Patent
1991-09-06
1992-02-18
Elkins, Gary E.
Envelopes, wrappers, and paperboard boxes
Paperboard box
Box material includes a coating or a nonpaperboard...
220657, B65D 134
Patent
active
050886401
ABSTRACT:
A pressed paper includes a planar center having an outer peripheral surface. The planar center forms a bottom for the pressed paper plate. An outwardly projecting side wall includes a first rim portion joined to the outer peripheral surface of the planar center and a second rim portion joined to the first rim portion. A third rim portion is joined to the second rim portion of the outwardly projecting side wall. A fourth rim portion is provided for forming an outer edge for the container. The first rim portion is joined to the peripheral surface of the planar center at an angle having a first predetermined radius. The second rim portion is joined to the first rim portion at an angle having a second predetermined radius. The third rim portion is joined to the second rim portion at an angle having a third predetermined radius. The fourth rim portion is joined to the third rim portion at an angle having a fourth predetermined radius. The first, second, third and fourth radii are selected for enhancing rigidity of the pressed paper plate as compared to a conventional paperboard container made from the same paperboard stock.
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Elkins Gary E.
James River Corporation of Virginia
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