Appeal No. 1996-0858 Page 2
Application No. 08/117,648
The appellant's invention relates to a method for
softening cotton toweling during its manufacture by treatment
with an aqueous cellulase solution and the cotton toweling
product thereof. An understanding of the invention can be
derived from a reading of exemplary claims 1 and 17, which
claims are reproduced below.
1. A method for softening cotton toweling during its
manufacture by treatment with cellulase which method
comprises:
(a) applying onto the surfaces of said toweling prior to
application of a finish to said toweling an aqueous cellulase
solution containing at least about 0.2 grams per liter
cellulase wherein the weight amount of said aqueous cellulase
solution applied onto the surface(s) of said toweling is
between about 10 to 50 percent of the weight of said toweling
and further wherein said aqueous cellulase solution is free of
surfactant;
(b) incubating the toweling at a temperature of from
about 20° to about 65°C for a period of from about 1 to about
16 hours to impart softening to said toweling; and
(c) treating the cotton toweling in a manner to remove
and/or inactivate the cellulase enzyme.
17. Cotton toweling prepared by the method which
comprises:
(a) applying onto the surfaces of said toweling prior to
application of a finish to said toweling an aqueous cellulase
solution containing at least about 0.2 grams per liter
cellulase wherein the weight amount of said aqueous cellulase
solution applied onto the surfaces(s) of said toweling is
between about 10 to 50 percent of the weight of said toweling
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