Patents on a roll of toilet paper
February 12, 2007
My toilet paper is covered by 25 different patents. Some of the highlights include:
- Patent: 5,671,897. “Core for core wound paper products having preferred seam construction”
A core for core wound paper products. The core is made by wrapping dual plies in a spiral pattern and adhering the plies together. The edge of one ply overlaps the ply gap of the other ply, preventing a single ply thickness from occurring anywhere on the core. Alternatively, the edge of each ply may overlap the ply gap of that respective ply. In yet another embodiment, the overlap may be formed by a separate ply applied to either ply.
- Patent: 5,328,565. “Tissue paper having large scale, aesthetically discernible patterns”
The present invention is directed to a single lamina tissue paper having visually discernible, large scale patterns made during the drying step of the papermaking process. Particularly, the tissue is made on a blow through drying belt having a pattern of alternating knuckles and deflection conduits. This pattern produces a like pattern of regions in the paper having alternating values of crepe frequencies, opacities and elevations. The differences in these values produces a visually discernible pattern.
- Patent: 6,149,769 “Soft tissue having temporary wet strength”
Disclosed is a soft, low density paper product made using papermaking fibers and a cationic temporary wet strength resin. Such paper products have a density less than about 0.6 grams per cubic centimeter, a basis weight is between about 10 and about 65 grams per square meter, a dry strength less than about 500 grams per inch (197 grams per centimeter), a ratio of an initial wet strength to the dry strength greater than about 0.15:1, and a ratio of a thirty minute wet strength to the initial wet strength less than about 0.4. Methods for producing such paper products are also disclosed. The paper products may be produced either as homogeneous structures or as multi-layered structures and may be either creped or uncreped.
5,114,771
5,240,562
5,274,930
5,328,565
5,581,906
5,584,126
5,584,128
5,671,897
5,679,222
5,728,268
5,846,380
5,855,738
5,865,396
5,865,950
5,942,085
5,944,954
5,980,691
6,036,139
6,048,938
6,106,670
6,126,784
6,149,769
6,162,329
6,187,138
6,207,734
