Appeal No. 1997-4439
Application No. 08/452,125
Reed discloses a heat transfer sheet (used for the
application of designs to textiles) which comprises a flexible
carrier sheet or web bearing a transfer layer of a polymer
composition which is rendered non-blocking at normal
temperatures by a particulate solid dispersed therein. Reed’s
solid particles are so selected that at the melting
temperature of the transfer layer they are either removed by
sublimation or converted to a form “which does not interfere
with the transfer of the design to the textile.” See the Reed
abstract. Reed does disclose that particulate polyesters,
polyamides, and polyethylene may be used as non-blocking
particles in the transfer sheet, but further specifies that
such polymers are low molecular weight polymers which, when
melted, form a phase separate from the polymeric transfer
layer. See Reed at column 5, lines 7-11. Although appellant
describes the use of polyester and nylon as sources of his
“adhesive-abrasive” particles as a preferred embodiment of his
invention, appellant identifies these particulate materials as
ground polyester and nylon which are “commonly used in the
textile industry to adhere sections of fabric together”. See
the specification at page 8, lines 22-24. Moreover, appellant
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