Sign in

Smooth through air dried tissue and process of making

 Paul Thomas Weisman et al
A smooth, high density tissue. The tissue has a relatively low caliper, as well as high smoothness and high density. The tissue is calendered from a multidensity, through air dried web.
Inventors: Paul Thomas Weisman, Scott Thomas Loughran, Dean Van Phan, Paul Dennis Trokhan, Robert Stanley Ampulski
Assignee: The Procter & Gamble Company

U.S. Classification
162/117; 162/205; 162/206

International Classification
D21F 1100

View patent at USPTO

Citations

Patent NumberTitleIssue date
3044228(unknown)Jul 1962
3301746(unknown)Jan 1967
3905863(unknown)Sep 1975
4016030Calendering paper containing thermoplastic contaminantsApr 5, 1977
4087319Method of and means for sheet transfer to and embossing at a reeling stationMay 2, 1978
4179330Apparatus for handling web material, and methodDec 18, 1979
4191609Soft absorbent imprinted paper sheet and method of manufacture thereofMar 4, 1980
4300981Layered paper having a soft and smooth velutinous surface, and method of making such paperNov 17, 1981
4528239Deflection memberJul 9, 1985
4834838Fibrous tape base materialMay 30, 1989
5354425Tissue paper treated with polyhydroxy fatty acid amide softener systems that are biodegradableOct 11, 1994

Claims

What is claimed is:

1. A process of making smooth through air dried multidensity tissue paper, said process comprising the steps of:

providing an aqueous dispersion of papermaking fibers;
providing a water pervious Fourdrinier wire;
forming an embryonic web of said papermaking fibers on said wire;
providing a through air drying belt;
transferring said embryonic web to said through air drying belt;
blowing air through said embryonic web;
providing a Yankee drying drum;
drying said embryonic web on said Yankee drying drum to a mean moisture level of about 1.9 to 3.5 percent;
providing two axially parallel rolls juxtaposed to form a nip therebetween, said nip being suitable for calendering said embryonic web; and
calendering said embryonic web in said nip at said mean moisture level to provide a macroscopically monoplanar multidensity tissue, said tissue having a smoothness less than or equal to about 800 microns.

2. The process according to claim 1 wherein said moisture level is from 2.5 to 3.0 percent.

3. The process according to claim 1 wherein the step of calendering comprises providing a tissue having a bulk density of at least about 0.120 grams per cubic centimeter.

4. The process according to claim 1 wherein the step of calendering comprises providing a tissue having a caliper of less than about 11 mils.

5. The process according to claim 4 wherein the step of calendering comprises providing a tissue having a caliper of less than about 10 mils.

6. A process of making smooth tissue paper, said process comprising the steps of:

providing an aqueous dispersion of papermaking fibers;
providing a water pervious Fourdrinier wire;
forming an embryonic web of said papermaking fibers on said wire;
providing a through air drying belt;
transferring said embryonic web to said through air drying belt;
blowing air through said web;
providing a Yankee drying drum;
drying said web on said Yankee drying drum to a moisture level of about 1.9 to 10.0 percent;
providing two axially parallel rolls juxtaposed to form a nip therebetween, said nip being suitable for calendering said embryonic web; and
calendering said embryonic web in said nip at said mean moisture level to provide a macroscopically monoplanar multidensity tissue, said tissue having a smoothness less than or equal to about 600 microns.

7. The process according to claim 6 wherein said nip provides a lineal pressure during said calendering of said web of about 175 to 250 pli.

Drawings