Corrugated cardboard boxes with increased compression strength

Details Corrugated cardboard boxes with increased compression strength Corrugated cardboard boxes with increased compression strength

1991-05-03

1992-02-04

Elkins, Gary E.

Envelopes, wrappers, and paperboard boxes

Paperboard box

Box material includes a coating or a nonpaperboard...

229919, 229DIG2, 229DIG4, 493 63, 493148, B65D 542

Patent

active

050853678

ABSTRACT:
To increase the compression strength of a corrugated cardboard box, the horizontal edges of the box are perforated and the vertical edges are chemically treated. Surprisingly, the combination of mechanical and chemical treatments increases the compression strength more than the figure obtained by adding the percentage strength increases attributable to the individual treatments.

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