Forming of pressed trays

B - Operations – Transporting – 31 – B

Patent

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Details

B31B 1/28 (2006.01) A47G 19/03 (2006.01) B32B 3/00 (2006.01) B65D 1/34 (2006.01) B65D 5/40 (2006.01) D21J 3/00 (2006.01)

Patent

CA 2073015

A product (10) press formed from a paperboard and a method for forming the same is provided, wherein the product in- cludes a press formed three-dimensional curvilinear region (20) containing a formation improvement structure for preventing the machine directionality of the paperboard from distorting the product from its desired shape. The press formed paperboard pro- duct (10) comprises a planar wall (12) having a periphery which is at least partially curvilinear and a peripheral wall (14) angular- ly oriented with respect to the planar wall (12). The press formed three-dimensional curvilinear region (20) extends radially out- wardly from the curvilinear periphery of the planar wall (12) while simultaveously curving out of the plane defined by the planar wall (12). The formation improvement structure includes a peripherally extending crush score line (24, 25, 30, 31, 42 and 43) hav- ing a substantial directional component extending generally parallel to the curvilinear portion (20) of the periphery of the planar wall (12). The crush score lines (24, 25, 30, 31, 42 and 43) may be circular, sinusoidal or saw tooth shaped.

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