Patent ID: 6338299
Filing Date: 2002-01-15
Classification: B41F

Abstract:
A single pass, perfecting sheet-like material coating apparatus, comprising:a first coating unit including a first coating impression cylinder; a second coating unit including a second coating impression cylinder; a third coating unit including a third coating impression cylinder; and a fourth coating unit including a fourth coating impression cylinder; the first and second coating impression cylinders being in contact with one another, the second and third coating impression cylinders being in contact with one another, the third and fourth coating impression cylinders being in contact with one another, said first and third coating units are adapted to apply a first and a third coating to a first surface of the sheet-like material and said second and fourth coating units are adapted to apply a second and a fourth coating to a second surface of the sheet-like material such that said coating units apply respective coatings to alternate first and second surfaces of the sheet-like material, each of said coating units including a drying device therein, wherein each of said drying devices dries a respective coating applied to the sheet-like material at least to an extent that a subsequent one of said coating impression cylinders is not substantially stained by the respective coating, wherein the first, second, third and fourth coating units are adapted to coat the sheet-like material with two coatings on each of the first and second surfaces thereof in a single pass through the apparatus; and at least one drying unit including a transfer cylinder and one or more drying devices opposed to the transfer cylinder for drying the sheet-like material transported by the transfer cylinder, the transfer cylinder of the drying unit being provided for transporting the sheet-like material from the fourth coating impression cylinder of the fourth coating unit.