Patent Number: 6,254,725

Title: High bulk paper

Abstract: A method and apparatus are disclosed for making a high bulk, coated paper of a unique structure with the coating forming a lower portion of the total caliper and the paper base forming a higher portion of the total caliper than conventionally made coated paper of the same weight. The process includes the step of using furnish with a high percentage of mechanical pulp, applying that furnish to papermachine wires, preferably with a gap former, coating the paper with a coating containing a plastic pigment, preferably of 4 or more parts per 100 parts of coating pigment, and calendering the coated paper at a nip loading less than conventional supercalendering nip loading. Preferably, the finished coated paper will have a 75.degree. TAPPI gloss of 40 or above. The method and apparatus can be used to make lightweight or other weights of coated paper.

Inventors: Lau; Ralph L. (Port Edwards, WI), Berger; Bernard J. (Wisconsin Rapids, WI), Munce; Martin E. (Wisconsin Rapids, WI)

Assignee: Consolidated Papers, Inc.

International Classification: D21H 11/00 (20060101); D21F 11/00 (20060101); D21F 5/00 (20060101); D21H 25/00 (20060101); D21H 25/14 (20060101); D21F 3/02 (20060101); D21G 1/00 (20060101); D21F 9/00 (20060101); D21H 11/10 (20060101); D21F 5/04 (20060101); D21H 19/84 (20060101); D21H 19/00 (20060101); D21H 19/42 (20060101); D21F 011/00 ()

Expiration Date: 07/03/2018