Method and system for manufacturing tissue products, and products produced thereby
View Patent ↗A process and product of making a tissue product is provided. For example, the method can comprise (a) providing a first papermaking furnish containing refined softwood fibers; (b) providing a second papermaking furnish containing hardwood fibers; (c) incorporating the first and second papermaking furnishes into a tissue web such that the tissue web has a hardwood layer and a softwood layer; (d) contacting the tissue web with a drying surface so that the hardwood layer is disposed adjacent thereto; and (e) removing the tissue web from the drying surface with a creping blade at a creping pocket angle of less than about 82 degrees.
1. A method of manufacturing a tissue product comprising the following steps:
(a) providing a first papermaking furnish containing softwood fibers mechanically refined with an energy of greater than about 1.5 horsepower-day per ton;
(b) providing a second papermaking furnish containing hardwood fibers;
(c) incorporating the first and second papermaking furnishes into a tissue web such that the tissue web has a hardwood layer and a softwood layer;
(d) contacting the tissue web with a drying surface so that the hardwood layer is disposed adjacent thereto; and
(e) removing the tissue web from the drying surface with a creping blade at a creping pocket angle of less than about 82 degrees.
2. The method of claim 1 wherein the hardwood layer and the softwood layer are formed using a multi-layered headbox.
3. The method of claim 1 in which the softwood fibers are mechanically refined with an energy of greater than about 3.0 horsepower-day per ton.
4. The method of claim 1 in which the softwood fibers are mechanically refined with an energy of greater than about 6.0 horsepower-day per ton.
5. The method of claim 1 in which the creping pocket angle is less than about 80 degrees.
6. The method of claim 1 in which the creping pocket angle is less than about 78 degrees.
7. The method of claim 1 in which the creping pocket angle is less than about 75 degrees.
8. The method of claim 1 in which the creping pocket angle is about 75 degrees.
9. The method of claim 1 , in which the hardwood layer comprises a debonder.
10. The method of claim 1 in which the hardwood layer defines an outer surface of the tissue product.
11. A method of manufacturing a tissue product comprising the following steps:
(a) providing a papermaking furnish containing softwood fibers, wherein said softwood fibers are mechanically refined with an energy of greater than about 3.0 horsepower-day per ton;
(b) providing a papermaking furnish containing hardwood fibers;
(c) depositing the softwood and hardwood furnishes onto a forming surface using a multi-layered headbox box to form a tissue web having a hardwood layer and a softwood layer;
(d) contacting the tissue web with a drying surface so that the hardwood layer is disposed adjacent thereto; and
(e) removing the tissue web from the drying surface with a creping blade at a creping pocket angle of less than about 80 degrees, wherein the hardwood layer defines an outer surface of the resulting tissue product.
12. The method of claim 11 in which the softwood fibers are mechanically refined with an energy of greater than about 6.0 horsepower-day per ton.
13. The method of claim 11 in which the creping pocket angle is less than about 78 degrees.
14. The method of claim 11 in which the creping pocket angle is less than about 75 degrees.
15. The method of claim 11 , in which the hardwood layer comprises a debonder.