Patent ID: 6792851
Filing Date: 2004-09-21
Classification: B31F,Y10T

Abstract:
A method for embossing a fibrous web incorporating recycled pulp containing contaminants to improve the bulk and softness of the web by passing the web through a nip formed by a pair of rotating rollers, wherein the contaminants will not damage the rollers, the method comprising:a) providing a first embossing roller having an outer surface, said outer surface having a plurality of male protuberances thereon corresponding to a desired embossed pattern; b) providing a second embossing roll having an outer surface having a plurality of female recessed portions which are matched to the male protuberances of the first roll; c) wherein one of said first and second embossing rollers has a Shore A hardness of 40-65 and the other roller has a Shore A hardness of at least about 90; and d) placing the rolls in contact to form a nip between the rolls, with the protuberances of the first roll entering the recesses of the second roll as the rolls rotate together; and passing the fibrous web incorporating recycled pulp constraining contaminantsâ€”has been inserted before the word â€œthroughâ€ ; through the nip formed by the rolls to emboss the web wherein the roller having the Shore A hardness of 40-65 will deform when any contaminants are encountered in the fibrous web such that a fibrous web including recycled pulp containing contaminant will be embossed without causing excess wear or damage to the embossing rollers.