Patent ID: 7070679
Filing Date: 2006-07-04
Classification: D21H,Y10T

Abstract:
1. A finished paper product formed by the method comprising the steps of: coating at least one side of a paper substrate with a coating comprising a hollow particulate plastic pigment; and passing the coated paper through a multi-nip calender device, wherein said calender device comprises at least three or more hard rolls and at least three or more soft rolls in an alternating arrangement, the interface between one hard roll and one soft roll forming a nip, wherein said calender device has at least five nips, each of said at least five nips applying a nip load on the coated base stock of about 1000 pounds per linear inch or less such that said nip load is substantially uniform at each nip with respect to others of said at least five nips, and wherein the surface temperature of each hard roll does not exceed about 450° F. to form a product having a TAPPI 75° gloss value of greater than 60 with a density range of about 15.5 pounds per ream per caliper point at a basis weight of about 150 pounds per ream to a density of about 20 pounds per ream per caliper point at a basis weight of about 50 pounds per ream.