Patent ID: 6183603
Filing Date: 2001-02-06
Classification: D21G

Abstract:
An apparatus for producing a substantially gloss mottle-free calendered paper with significantly improved smoothness by calendering a coated paper, wherein said apparatus is comprised of:a single, harder calendering roll;a heated roll means located substantially adjacent to said single, harder calendering roll;a first nip located between said single, harder roll and said heated roll;a single, softer calendering roll located substantially adjacent to said heated roll means; anda second nip located between said single, softer roll and said heated roll, wherein said single, harder calendering roll has a Shore D surface hardness rating of greater than 80 and said softer calendering roll has a Shore D surface hardness rating of less than or equal to 80 such that paper to be calendered contacts said first nip and then said second nip.