Wide wale tissue sheets and method of making same
AssigneeKimberly-Clark Worldwide, Inc.
InventorsMark Alan Burazin, Cristina Asensio Mullally, Andrew Peter Bakken, Christopher Scott Kowalski, Bernhardt Edward Kressner, Michael Stephen Vance, Kevin Joseph Vogt
Life of this patent
Estimating the term…
Abstract
Highly textured tissue sheets, particularly suitable for use as bath tissue, are produced by throughdrying and have a low number and/or low amount of pinholes. The low number or amount of pinholes is provided by using a throughdrying fabric having parallel wide ridges with a height suited to the particular tissue sheet being produced.
Claims38
A papermaking fabric having a textured sheet contacting surface comprising substantially continuous machine-direction ridges separated by valleys, wherein the height of the ridges is from about 0.5 to about 3.5 millimeters, the width of the ridges is about 0.3 centimeter or greater, and the frequency of occurrence of the ridges in the cross-machine direction of the fabric is from about 0.2 to about 3 per centimeter.
A continuous method of making bath tissue and paper towels on the same papermaking machine comprising:
- (a) forming a tissue web having a first basis weight;
- (b) transferring the tissue web to a throughdrying fabric having continuous machine-direction ridges separated by valleys, wherein the height of the ridges is from about 0.5 to about 3.5 millimeters or greater, the width of the ridges is about 0.3 centimeter or greater and the frequency of the ridges in the cross-machine direction is from about 0.2 to about 3 per centimeter;
- (c) throughdrying the tissue web;
- (d) winding the tissue web into a parent roll;
- (e) converting the parent roll into paper toweling;
- (f) forming a tissue web having a second basis weight which is less than the first basis weight;
- (g) transferring the web to the same throughdrying fabric of step (b);
- (h) throughdrying the web;
- (i) winding the dried web into a parent roll;
- and
- (j) converting the parent roll into bath tissue.
A tissue sheet having Wide Wales, a basis weight of from about 10 to about 35 grams per square meter (gsm) and one or more of the following pinhole-related indexes:
- a Pinhole Coverage Index of about 0.25 or less, a Pinhole Count Index of about 65 or less and a Pinhole Size Index of about 600 or less.
A tissue sheet having Wide Wales and a geometric mean tensile strength of about 1200 grams or less per 7.62 centimeters, a basis weight of from about 10 to about 45 grams per square centimeter and one or more of the following pinhole-related indexes:
- a Pinhole Coverage Index of about 0.25 or less, a Pinhole Count Index of about 65 or less and a Pinhole Size Index of about 600 or less.
A tissue sheet having Wide Wales, a basis weight of from about 10 to about 35 grams per square meter (gsm) and a Pinhole Coverage Index of about 0.25 or less.
A tissue sheet having Wide Wales and a geometric mean tensile strength of about 1200 grams or less per 7.62 centimeters, a basis weight of from about 10 to about 45 grams per square centimeter and a Pinhole Coverage Index of about 0.25 or less.
Dependencies are inferred from the claim text.