Appeal No. 2005-1318 Page 8
Application No. 10/191,198
permanently secured or sealed to the inner surface of the front panel 22 and the inner
surface of the rear panel 24 along respective seal lines 36 and 38 in order to form a
hollow pocket 40 therebetween. The seal lines 36 and 38 are identical in shape, e.g.,
compound curves. The permanent securement of the bottom panel to the front and rear
panels may be achieved by any conventional technique, e.g., heat sealing, welding,
adhesives, etc.
APA
The APA is directed to paper cups and is set forth on pages 3-4 of the appellants'
specification and is shown in Figures 2-3D of the appellants' application. Figure 2
shows a wall blank 210 and a circular base blank 212 that have been cut out of
paperboard to use in forming a basic paper cup. Figure 3A shows a first step during
manufacture, where the wall blank 210 is wound around a tapering mandrel 380, then
the ends are secured with an adhesive to form the tapering tube 310 with seam 311. In
a separate step, a piston forces the base blank 212 through an opening having a
smaller diameter than the blank itself, forming a rim or short, cylindrical edge 314 that
projects at a right angle to the circular base, as seen in Figure 3B. The formed base
312 is then inserted into the bottom of the now- sealed tube 310. As seen in Figure 3C,
the rim of the base section 312 can be positioned slightly above the lower edge 316 of
the wall section 310. Finally, the lower edge 316 of the wall section 310 is crimped over
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