Patent ID: 6620279
Filing Date: 2003-09-16
Classification: B43M,B65H,Y10T

Abstract:
A folding and sealing apparatus comprising:a housing for the folding and sealing apparatus; a first roller, a second roller, a third roller and a fourth roller rotatably supported by the housing; a drive mechanism coupling at least the second, the third and the fourth rollers to one another so that at least the second, the third and the fourth rollers all rotate simultaneously with one another; a motor being accommodated by the housing, and the motor coupled to the drive mechanism for driving the second, the third and the fourth rollers simultaneously with one another; a feed surface, supported by the housing, for feeding a supply of pre-glued forms to the first and second rollers; wherein the first roller is spring biased toward the second roller to form a spring biased variable width first nip, the third roller is supported by the housing a fixed distance away from the second roller to form a fixed constant width second nip, and the fourth roller is supported by the housing a fixed distance away from the third roller to form a fixed constant width third nip, and the fixed constant width second and third nips provide a sufficient sealing pressure to the folded pre-glued form, as the pre-glued form passes through the fixed constant width second and third nips, to facilitate both folding and sealing of the pre-glued form as the folded pre-glued form passes therethrough.