Appeal 2007-0008
Application 09/818,023
material displacement and material stretching that can occur during
folding because of the double material thickness at the points of
overlap (Seufert ‘916, col. 1, ll. 37-40). Seufert addresses this
problem by forming thinned-down areas 17 in the foil blank prior to
gluing the foil blank to the cardboard blank (Seufert, col. 2, ll. 57-60).
The thinned-down areas 17 in the foil are formed simultaneously with
the placement of bend lines 13 in the foil (Seufert ‘916, col. 8,
ll. 25-29). The thinned-down areas 17 and bend lines 13 can be
formed with a high frequency process or with a hot stamping process,
both of which processes are characterized by Seufert ‘916 as being so
well known that no further explanation thereof is necessary (Seufert
‘916, col. 8, ll. 29-41).
6. A transition zone between the thin bend line 13 and the wider thinned-
down area 17 having a gradually increasing width from the thin bend
line 13 to the wider thinned-down area 17 is illustrated in Figs. 2, 3,
and 4 of Seufert ‘916. The edge of the extra foil ply (the overlap area)
is located within the transition zone (Seufert ‘916, Figs. 2, 3, and 4)
7. Seufert ‘206 discloses use of a rule-shaped tool 20 in the type of high
frequency process alluded to by Seufert ‘916 (Finding of Fact 5) for
forming fold lines in carton material. Seufert ‘206 is the US
equivalent of the German application (“DE-PS No. 25 41 324”)
referred to by Seufert ‘916 in disclosing a suitable high frequency
process for forming the thinned-down areas 17 and bend lines 13 of
the foil (Seufert ‘916, col. 8, l. 38). Thus, the process and tooling
disclosed by Seufert ‘206 are capable of forming the configuration of
the thinned-down areas 17 and bend lines 13 disclosed by Seufert
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