Patent ID: 8322116

Claim:
A device for the roll-sealing of sheets, comprising: a mating roll having a lateral surface; and a sealing roll, which presses against the mating roll with a sealing force, so that a molded sheet having blister pockets and a cover sheet can be guided between the sealing roll and the mating roll and sealed together to form a sealed composite sheet structure; wherein the lateral surface of the mating roll comprises, recesses to accept the blister pockets of the molded sheet, a rippled structure having elevations, which comprise contact areas of different sizes, and different longitudinal sections extending parallel to an axis of rotation of the mating roll, wherein the contact areas of the elevations are the largest in first longitudinal sections of the lateral surface of the mating roll in which the lateral surface of the mating roll has been reduced to the greatest extent by the recesses, and wherein the contact areas of the elevations are the smallest in second longitudinal sections of the lateral surface of the mating roll in which the lateral surface of the mating roll is not interrupted by the recesses.