Appeal No. 1998-2217
Application No. 08/644,555
Claim 1. A method for making a bulky tissue sheet comprising:
(a) depositing an aqueous suspension of papermaking fibers
onto a forming fabric to form a wet tissue web, said
papermaking fibers comprising at least about 10 dry weight
percent modified wet-resilient fibers selected from the group
consisting of chemically cross-linked cellulose fibers, heat-
cured cellulosic fibers, mercerized fibers and sulfonated pulp
fibers; (b) partially dewatering the wet web to a consistency
of about 15 percent or greater; (c) compressing the partially
dewatered web in a high intensity extended nip press to
further dewater the web to a consistency of about 35 percent
or greater; and (d) final drying the web, wherein the Bulk of
the dewatered web prior to final drying is greater than (-
0.02C + 3.11), wherein "C" is the consistency of the web
leaving the high intensity extended nip press, expressed as
percent dryness, and Bulk is expressed as cubic centimeters
per gram.
The references relied upon by the examiner are:
Weldon 4,551,199 Nov. 05, 1985
Klowak 4,849,054 Jul. 18, 1989
Steiner et al. 5,393,384 Feb. 28, 1995
Bluhm et al. 5,556,511 Sep. 17, 1996
Schauman GB 1,212,473 Nov. 18, 1970
(Published Great Britain Application)
The following rejections are at issue in this appeal:
(1) Claims 1-15 are rejected under 35 U.S.C. § 103 as
being unpatentable over Bluhm.
(2) Claims 1-21 are rejected under 35 U.S.C. § 103 as
being unpatentable over Steiner in view of Bluhm and GB '473,
Klowak or Weldon.
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