Envelopes – wrappers – and paperboard boxes – Paperboard box – Box material includes a coating or a nonpaperboard...
Patent
1986-11-17
1987-10-13
Marcus, Stephen
Envelopes, wrappers, and paperboard boxes
Paperboard box
Box material includes a coating or a nonpaperboard...
206 4531, 206 4533, 206831, 229DIG12, B65D 8532
Patent
active
046993118
ABSTRACT:
An improved egg carton comprising a container having a plurality of cup-shaped receptacles aligned in a plurality of rows, each of which are conformed to and adapted to receive a vertically positioned egg. A plurality of posts are positioned between the rows of eggs. The carton also includes a pair of upper sidewalls integrally hinged along hinge lines on opposite sides of the container. The upper sidewalls are normally biased toward a substantially horizontal position to permit eggs to be placed in the receptacles. The upper sidewalls have a sufficient length to extend at least to the outer edge of the first and last eggs in the rows of eggs and have a height sufficient to extend above the upper ends of the eggs when the upper sidewalls are aligned in a vertical position. A hot sealant is applied to the hinge lines, causing the upper sidewalls to remain in the vertical position. A clear plastic film is forced over and around upper portions of the eggs extending out of the container. The film is drawn down around a portion of the eggs adhering to the tops of the posts and also being secured to the hinge lines.
REFERENCES:
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patent: 3411693 (1968-11-01), Macchi
patent: 3556387 (1971-01-01), Trimble
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patent: 4335813 (1982-06-01), Bessett et al.
patent: 4352427 (1982-10-01), Lake
patent: 4475653 (1984-10-01), Ullman
Elkins Gary E.
Marcus Stephen
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