Printed, soft, bulky single-ply absorbent paper having a serpentine configuration and low sidedness

57 Pages·2013·3.71 MB·English

US006331228B1
(12) United States Patent (10) Patent N0.: US 6,331,228 B1
Heath et al. (45) Date of Patent: *Dec. 18, 2001
(54) PRINTED, SOFT, BULKY SINGLE-PLY (56) References Cited
ABSORBENT PAPER HAVING A
US. PATENT DOCUMENTS
SERPENTINE CONFIGURATION AND LOW
SIDEDNESS
5,882,479 * 3/1999 Oriaran et al. ..................... .. 162/112
(75) Inventors: Michael S. Heath, Menasha; T. Philips * cited by examiner
Oriaran; Mark S. Siegel, both of
Primary Examiner—Jose Fortuna
Appleton; Frank D. Harper; John H.
DWiggins, both of Neenah, all of WI (57) ABSTRACT
(Us)
The present invention relates to a soft, thick, single-ply,
(73) Assignee: Fort James Corporation, Deer?eld, IL printed, absorbent paper product having a Yankee side and
(Us) an air side Wherein the absorbent paper is printed on before
or after embossing on the Yankee side, air side, or both sides,
(*) Notice: Subject to any disclaimer, the term of this said absorbent paper exhibiting a serpentine con?guration.
patent is extended or adjusted under 35 This inventions also relates to a process for the manufacture
U.S.C. 154(b) by 0 days. of such absorbent paper product having a basis Weight of at
least about 12.5 lbs. per 3000 square foot ream and having
This patent is subject to a terminal dis loW sidedness, said tissue exhibiting: a speci?c total tensile
claimer. strength of betWeen 40 and 200 grams per 3 inches per
pound per 3000 square foot ream, a cross direction speci?c
(21) Appl. No.: 09/568,664 Wet tensile strength of betWeen 2.75 and 20.0 grams per 3
inches per pound per 3000 square foot ream, the ratio of MD
(22) Filed: May 10, 2000 tensile to CD tensile of betWeen 1.25 and 2.75, a speci?c
geometric mean tensile stiffness of betWeen 0.5 and 3.2
Related US. Application Data grams per inch per percent strain per pound per 3000 square
foot ream, a friction deviation of less than 0.250, and a
(62) Division of application No. 09/075,689, ?led on May 11, sidedness parameter of less than 0.30. These single-ply,
1998, now Pat. No. 6,165,319. printed, absorbent paper products in the form of unembossed
(51) Int. Cl.7 ............................. .. D21H 17/07; B31F 1/07 or embossed single-ply bathroom tissue, facial tissue, or
(52) US. Cl. ........................ .. 162/117; 162/109; 162/111; napkin are useful articles of commerce. The single-ply
162/164.6; 162/166; 162/179; 428/153; absorbent paper products exhibit a printed sidedness value
428/176 of AE of less than 2.
(58) Field of Search ................................... .. 162/111, 109,
162/164.6, 117, 112, 123, 127, 166, 179, 31 Claims, 27 Drawing Sheets
125, 132_133, 134, 113, 204207, 428/153,
154, 174, 172, 156 (3 of 27 Drawing Sheet(s) Filed in Color)
U.S. Patent Dec. 18,2001 Sheet 1 0f 27 US 6,331,228 B1
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U.S. Patent Dec. 18,2001 Sheet 2 0f 27 US 6,331,228 B1
U.S. Patent Dec. 18,2001 Sheet 3 0f 27 US 6,331,228 B1
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U.S. Patent Dec. 18,2001 Sheet 4 0f 27 US 6,331,228 B1
U.S. Patent Dec. 18,2001 Sheet 5 0f 27 US 6,331,228 B1
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U.S. Patent Dec. 18,2001 Sheet 7 0f 27 US 6,331,228 B1
Single-Ply Invention
FIG. 7A
One Ply of Commercial 2-Ply
FIG. 7B
PRIOR ART
U.S. Patent
Dec. 18,2001 Sheet 8 0f 27 US 6,331,228 B1
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Pr Em ed Si giw?! v i 1):: Side: 322k Fitri Invmmm:
nkee Sisie ‘Was Print
U.S. Patent Dec. 18,2001 Sheet 9 0f 27 US 6,331,228 B1
HG. 8E"? FEGA 8*2
Pn'med Singlcc~P1y Invention "A ir Side ink Smkethmugh From S ingie~ Piy Invemtion
when Air Side ‘as Printed