Envelopes – wrappers – and paperboard boxes – Paperboard box – Including a polygonal – nonrectangular wall
Patent
1993-09-02
1995-03-14
Elkins, Gary E.
Envelopes, wrappers, and paperboard boxes
Paperboard box
Including a polygonal, nonrectangular wall
22912528, 229163, 229171, 229186, 229906, B65D 524
Patent
active
053970519
ABSTRACT:
The present invention relates to a paper-made cake box which includes a lower seat and a corresponding upper cover. Both the lower seat and the upper cover are formed from a paper board made of pure fiber and additives laminated to an adequate thickness and coated with polyethylene to meet the FDA regulations. The paper board for the lower seat is cut to a substantially circular or polygonal shape and embossed with folding lines which define a polygonal bottom section and several wall sections adjoining the bottom section at the folding lines. Each of the wall sections is divided by two parallel folding lines into an inner wall section, an outer wall section and a flange section. Every two adjacent wall sections contain a corner connection section which is sector-shaped and divided by several radially extended folding lines, a transverse folding line and a triangular opening into inner folding plate sections, outer folding plate sections, and edge folding plate sections which are respectively adjacent to the inner wall, outer wall and flange sections, whereby the inner, outer and edge folding plate sections can be folded and heat-sealed on the wall sections, making the same folded and upright to form a partition having an inverted V-shaped cross section around the bottom section and a circle of horizontally outward extended flanges surrounding a bottom portion of the upright partition.
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Chang Richard C. H.
Liu Yuan-Shin
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