TAILORED HEMICELLULOSE IN NON-WOOD FIBERS FOR TISSUE PRODUCTS
A tissue sheet includes softwood fibers and treated non-wood fibers from plants in the Poaceae family, wherein the in treated non-wood fibers have less than 15 percent hemicellulose. Also, a tissue sheet consists essentially of softwood fibers and treated non-wood fibers, wherein the treated non-wood fibers have less than 15 percent hemicellulose. Customizing the tensile index and Canadian standard freeness (CSF) of fibers in a tissue sheet includes treating non-wood fibers by removing a portion of hemicellulose from the non-wood fibers; forming a tissue sheet comprising softwood fibers and the treated non-wood fibers; and adjusting the portion of hemicellulose removed from the non-wood fibers to achieve a desired the tensile index and Canadian standard freeness (CSF) of the treated non-wood fibers.
1 . A tissue sheet comprising:
softwood fibers; and
treated non-wood fibers from plants in the Poaceae family, wherein the treated non-wood fibers have less than 15 percent hemicellulose.
2 . The tissue sheet of claim 1 , wherein the non-wood fibers are selected from the group consisting of wheat, corn, miscanthus, bamboo, and combinations thereof.
3 . The tissue sheet of claim 1 , further comprising eucalyptus fiber.
4 . The tissue sheet of claim 1 , further comprising hardwood fiber.
5 . The tissue sheet of claim 1 , comprising two outer layers and at least one inner layer.
6 . The tissue sheet of claim 5 , wherein an outer layer comprises hardwood fibers and non-wood fibers and the at least one inner layer comprises softwood fibers.
7 . The tissue sheet of claim 5 , wherein the at least one inner layer comprises hardwood fibers and non-wood fibers.
8 . The tissue sheet of claim 5 , wherein the two outer layers comprise hardwood fibers.
9 . The tissue sheet of claim 1 , wherein the treated non-wood fibers have at least 50 percent less hemicellulose than the same non-wood fibers without treatment.
10 . The tissue sheet of claim 1 , wherein the treated non-wood fibers have at least 70 percent less hemicellulose than the same non-wood fibers without treatment.
11 . The tissue sheet of claim 1 , wherein the tissue sheet is softer and more durable than a tissue sheet comprising softwood fiber and eucalyptus fiber in the place of the treated non-wood fiber.
12 . The tissue sheet of claim 1 , wherein the treated non-wood fiber has a higher CSF and a lower WRV than eucalyptus fiber.
13 . A tissue sheet consisting essentially of softwood fibers and treated non-wood fibers, wherein the treated non-wood fibers have less than 15 percent hemicellulose.
14 . The tissue sheet of claim 13 , wherein the treated non-wood fibers have at least 30 percent less hemicellulose than the same non-wood fibers without treatment.
15 . The tissue sheet of claim 13 , wherein the treated non-wood fibers have at least 50 percent less hemicellulose than the same non-wood fibers without treatment.
16 . A method for customizing the tensile index and Canadian standard freeness (CSF) of fibers in a tissue sheet, the method comprising:
treating non-wood fibers by removing a portion of hemicellulose from the non-wood fibers;
forming a tissue sheet comprising softwood fibers and the treated non-wood fibers; and
adjusting the portion of hemicellulose removed from the non-wood fibers to achieve a desired the tensile index and Canadian standard freeness (CSF) of the treated non-wood fibers.
17 . The method of claim 16 , the tissue sheet further comprising eucalyptus fiber.
18 . The method of claim 16 , the tissue sheet further comprising hardwood fiber.
19 . The method of claim 16 , wherein the non-wood fibers are selected from plants in the Poaceae family including wheat, corn, miscanthus, and bamboo.
20 . The method of claim 16 , wherein the treated non-wood fibers have less than 15 percent hemicellulose.