Method of using a nozzle apparatus for the application of the foam treatment of tissue webs

A method of applying a liquid-based composition to a wet tissue web capable of being made into a tissue product having a basis weight less than about 120 grams per square meter, the method comprising:

• providing a papermaking furnish containing at least cellulosic fibers;
• forming a wet tissue web from the papermaking furnish, the wet tissue web having an upper surface and a lower surface opposing the upper surface;
• forming a foam from a liquid-based composition;
• positioning a foam applicator including a flexible scraper having a lower surface adjacent the wet tissue web and an opposing upper surface adjacent to the upper surface of the wet tissue web wherein the flexible scraper has a first end and a second end and the lower surface of the flexible scraper is in contact with the upper surface of the wet tissue web;
• furnishing the foam applicator with the foam;
• dispensing the foam from an extrusion head of the foam applicator onto the wet tissue web while the wet tissue web has a solids consistency less than about 95% by dry weight of the tissue web wherein the foam flows over the lower surface of the flexible scraper to the wet tissue web;
• and,
• distributing the foam on the upper surface of the wet tissue web by the flexible scraper.

A method of applying a liquid-based composition to a wet tissue web capable of being made into a tissue product having a basis weight less than about 120 grams per square meter, the method comprising:

• depositing a papermaking furnish containing at least cellulosic fibers and water onto a moving fabric surface, thereby forming a wet tissue web on the moving fabric surface, the wet tissue web having an upper surface and a lower surface opposing the upper surface;
• forming a foam from a liquid-based composition;
• positioning a foam applicator including a flexible scraper having a lower surface adjacent the wet tissue web and an opposing upper surface adjacent to the upper surface of the wet tissue web wherein the lower surface of the flexible scraper is in contact with the upper surface of the wet tissue web;
• furnishing the foam applicator with the foam;
• dispensing the foam from an extrusion head of the foam applicator onto the wet tissue web while the wet tissue web has a solids consistency less than about 95% by dry weight of the wet tissue web wherein the foam flows over the lower surface of the flexible scraper to the wet tissue web;
• distributing the foam on the upper surface of the wet tissue web by the flexible scraper;
• and,
• thereafter, drying the wet tissue web to remove water therefrom thereby forming a dried tissue web.

A method of applying a liquid-based composition to a wet tissue web capable of being made into a tissue product having a basis weight less than about 120 grams per square meter, the method comprising:

• providing a papermaking furnish containing at least cellulosic fibers;
• forming a wet tissue web from the papermaking furnish, the wet tissue web having an upper surface and a lower surface opposing the upper surface;
• forming a foam from a liquid-based composition;
• positioning a foam applicator including a flexible scraper having a lower surface adjacent the wet tissue web and an opposing upper surface adjacent to the lower surface of the wet tissue web wherein the lower surface of the flexible scraper is in contact with the lower surface of the wet tissue web and has a first end and a second end, the foam applicator being furnished with the foam;
• dispensing the foam from an extrusion head of the foam applicator onto the wet tissue web while the wet tissue web has a solids consistency less than about 95% by dry weight of the tissue web wherein the foam flows over the lower surface of the flexible scraper to the wet tissue web;
• and,
• distributing the foam on the lower surface of the wet tissue web by the flexible scraper.

A method of uniformly applying a liquid-based composition to a dried tissue web made into a tissue product having a basis weight less than about 120 grams per square meter, the method comprising:

• providing a papermaking furnish containing at least cellulosic fibers;
• forming a wet tissue web from the papermaking furnish;
• drying the wet tissue web to remove water therefrom thereby forming a dried tissue web;
• forming a foam from a liquid-based composition;
• applying the foam to the dried tissue web while the tissue web has a solids consistency equal to or greater than about 95% by dry weight of the tissue web wherein the foam is applied by an extrusion head of a foam applicator including a flexible scraper having a lower surface adjacent the wet tissue web and an opposing upper surface wherein the foam flows over the lower surface of the flexible scraper to the wet tissue web;
• and,
• distributing the foam on the dried tissue web by the flexible scraper.

A method of applying a liquid-based composition to a dried tissue web capable of being made into a tissue product having a basis weight less than about 120 grams per square meter, the method comprising:

• providing a papermaking furnish containing at least cellulosic fibers;
• forming a wet tissue web from the papermaking furnish,
• drying the wet tissue web to remove water therefrom, thereby forming a dried tissue web having an upper surface and a lower surface opposing the upper surface;
• forming a foam from a liquid-based composition;
• positioning a foam applicator including a flexible scraper having a lower surface adjacent the wet tissue web and an opposing upper surface adjacent to the upper surface of the dried tissue web wherein the lower surface of the flexible scraper is in contact with the upper surface of the dried tissue web and the flexible scraper includes a first end and a second end;
• furnishing the foam applicator with the foam;
• dispensing the foam from an extrusion head of the foam applicator onto the dried tissue web while the dried tissue web has a solids consistency equal to or greater than about 95% by dry weight of the tissue web wherein the foam flows over the lower surface of the flexible scraper to the wet tissue web;
• and,
• distributing the foam on the upper surface of the dried tissue web by the flexible scraper.

A method of applying a liquid-based composition to a wet tissue web capable of being made into a tissue product having a basis weight less than about 120 grams per square meter, the method comprising:

• depositing a papermaking furnish containing at least cellulosic fibers and water onto a moving fabric surface, thereby forming a wet tissue web on the moving fabric surface;
• drying the wet tissue web to remove water therefrom thereby forming a dried tissue web wherein the dried tissue web has an upper surface and a lower surface opposing the upper surface;
• forming a foam from a liquid-based composition;
• positioning a foam applicator including a flexible scraper having a lower surface adjacent the wet tissue web and an opposing upper surface adjacent to the upper surface of the dried tissue web wherein the flexible scraper is in contact with the upper surface of the dried tissue web;
• furnishing the foam applicator with the foam;
• dispensing the foam from an extrusion head of the foam applicator onto the dried tissue web while the dried tissue web has a solids consistency equal to or greater than about 95% by dry weight of the tissue web wherein the foam flows over the lower surface of the flexible scraper to the wet tissue web;
• and,
• distributing the foam on the upper surface of the dried tissue web by the flexible scraper.

A method of applying a liquid-based composition to a wet tissue web capable of being made into a tissue product having a basis weight less than about 120 grams per square meter, the method comprising:

• providing a papermaking furnish containing at least cellulosic fibers;
• forming a wet tissue web from the papermaking furnish, the wet tissue web;
• drying the wet tissue web to remove water therefrom, thereby forming a dried tissue web having an upper surface and a lower surface opposing the upper surface;
• forming a foam from a liquid-based composition;
• positioning a foam applicator including a flexible scraper having a lower surface adjacent the wet tissue web and an opposing upper surface adjacent to the lower surface of the dried tissue web wherein the lower surface of the flexible scraper is in contact with the lower surface of the dried tissue web and has a first end and a second end;
• furnishing the foam applicator with the foam;
• dispensing the foam from an extrusion head of the foam applicator onto the dried tissue web while the dried tissue web has a solids consistency equal to or greater than about 95% by dry weight of the tissue web wherein the foam flows over the lower surface of the flexible scraper to the wet tissue web;
• and,
• distributing the foam on the lower surface of the dried tissue web by the flexible scraper.