Appeal No. 95-2011
Application No. 07/959,011
The examiner’s position is not without merit. However, a
close examination of Skeist reveals that there is no
suggestion to use a core-shell polymer of the type disclosed
in Shih as a contact adhesive. We agree with appellants that
"neither reference discloses or suggests the particular
composition as claimed could be a contact adhesive" (Brief, p.
4). Therefore, there would have been no reason to add a
tackifier to the adhesive disclosed in Shih.
In addition, Shih discloses that heat may be used to bond
the laminating adhesives to film substrates (col. 13, lines
19-33):
[T]he adhesive is coated on a film and allowed to
dry at room temperature (or dried at moderate heat).
The adhesive coated film is then laminated to the
desired substrate, for example, a corona treated
polyethylene or polypropylene film or other lamina
by passing through a "hot nip" roller. The
resultant laminate is characterized by the immediate
formation of a strong bond which gains strength on
room temperature (R.T.) as a result of polymeric
hardening and curing.
According to Skeist (p. 443, col. 2):
Heat and Pressure Bonding
With heat-activated bonding techniques, a non-blocking
(tack-free) film is applied to one substrate and later
reactivated by the application of heat, which produces
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