Appeal No. 2005-1318 Page 6
Application No. 10/191,198
The film used for the portion can be any one of a number of synthetic resins,
such as Mylar, cellulose acetate, or other materials coated on the inside with a
layer of polyethylene. The polyethylene is thermoplastic and enables the inner
face of the film to be sealed to itself, face-to-face. Thus, the transverse seal 18 is
formed by the application of heat pressure and the tubular portion 12 of the package is
attached to the rigid base 11 also by the application of heat and pressure sealing the
inside face of walls 12 to surface 14 of the base. Although the upper portion of the
package may be made from a length of seamless tubing, Schneider prefers that the
package be made from a flat web which is shaped around a mandrel into tubular form at
the time of making the package. As a result, the opposite marginal areas of the flat web
are brought together into overlapping relationship and are sealed together to
produce an overlapping, longitudinal seal 20 (see Figure 1). Base 12 may be made of
any suitable material; but Schneider prefers to use a material adapted to heat-sealing
operations, for example polyethylene.
Package 10 comprises a rigid base which does not crush and gives to the
package at one end relatively large transverse dimensions as compared to the flat or
envelope package, as well as providing a surface 16 upon which the package can rest
in an upright position without danger of tipping over. Thus, after the package is once
opened at the upper end, as by cutting off sealed area 18 or by tearing off a corner as
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