Appeal No. 2001-1884
Application No. 08/718,692
APPEALED SUBJECT MATTER
The subject matter on appeal is directed to a method of
producing a packaging laminate material through uniting first and
second plastic webs under simultaneous application of heat and
pressure after they have been subjected to a non-chemical
activation treatment. See the specification, page 4. The use of
this non-chemical activation treatment overcomes “serious
drawbacks” in a conventional packaging laminate forming process,
which employs chemical binding agents associated with
environmentally hazardous solvents. Id at page 3. According to
appellants (Id at page 4):
The non-chemical surface activating treatment of
the webs is carried out in connection with, preferably
immediately before, the webs being brought together
and, in principle, is based on the concept that a high
frequency electric field through which each respective
web is passed activates surface molecules or molecule
fractions occurring in the plastic or plastics in such
a manner that the plastics will become mutually
reactive and may permanently bond to one another.
Surface-activating treatments of this type are per
se known and, for example, include so-called plasma-
treating, corona-treating, flame-treating and others
. . . . [Emphasis ours.]
Details of the appealed subject matter are illustrated in
representative claims 39 and 68 reproduced below:
2
Page: Previous 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Next
Last modified: November 3, 2007