Spiral shrink belt and perforated roll

Details Spiral shrink belt and perforated roll Spiral shrink belt and perforated roll

D - Textiles, Paper

21

F

D21F 3/10 (2006.01) B41N 7/00 (2006.01) D21F 1/00 (2006.01) D21F 1/60 (2006.01)

Patent

CA 2057094

ABSTRACT OF THE DISCLOSURE An open ended, flat spiral belt is joined at its ends on a roll to form an endless cover. A spiral belt is fitted with a zipper assist in the seam area to facilitate the joining of the spiral belt on the roll. One part of the zipper assist is removably attached to one end of the spiral belt with the other part of the zipper assist being removably attached to the other end of the spiral belt. When the two sections of the zipper assist are zipped together, they pull the two ends of the spiral belt together, allowing for interdigitation of the spiral loops of the spiral belt, which then forms a channel for the introduction of a seam wire. Once the spiral belt is seamed on the roll, the zipper assist is removed and the roll is set in slow motion at about ten revolutions per minute. The entire fabric is subjected to application of heat from a hot air gun to set the spiral belt, now in the form of a spiral shrink sleeve.

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