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US 5,855,738 AGranted
High density tissue and process of making
AssigneeThe Procter & Gamble Company
InventorsPaul Thomas Weisman, Scott Thomas Loughran
Life of this patent
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Abstract
A smooth, high density tissue. The tissue has a relatively low caliper, yet maintains visually discernible machine direction micropeaks at a suitable micropeak frequency.
Claims5
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 web to said through air drying belt, wherein a first plurality of regions of said web are dedensified upon transfer;
- blowing air through said web
- providing a Yankee drying drum;
- transferring said web from said through air drying belt to said Yankee drying drum, whereby a second plurality of regions of said web are densified upon transfer;
- drying said web on said Yankee drying drum to a mean moisture level of about 1.9 to 10.0 percent to yield a multi-density tissue suitable for calendering;
- providing two axially parallel rolls juxtaposed to form a nip therebetween, said nip being suitable for calendering said tissue;
- and
- calendering said tissue in said nip at said mean moisture level to provide said tissue with a smoothness less than or equal to about 600 microns and a micropeak frequency of at least about 30 micropeaks per inch.
9 more elements
Dependencies are inferred from the claim text.