Patent ID: 7028946
Filing Date: 2006-04-18
Classification: B65H,D06C

Abstract:
1. An expander roll comprising: a plurality of metallic, cylindrical roll members attached to an outer periphery of a curved shaft with bearings; and a ring-shaped elastic packing with which a gap between ends of adjoining, cylindrical roll members is closed, the packing provided inside the ends of the roll members and having an outer circumferential surface that faces the gap between the roll members which said outer circumferential surface has respective side parts on either side of the gap; wherein outer surfaces of both side parts are fixed to inner surfaces of the cylindrical roll members, and the ring-shaped elastic packing is deformed in accordance with a movement in a lengthwise direction of the adjoining, cylindrical roll members; and wherein one concave portion or a plurality of concave portions are formed in the outer surfaces of both side parts so that both side parts have pleat-like portions, and outer surfaces of the pleat-like portions and the inner surfaces of both cylindrical roll members are fixed, whereby the pleat-like portions are deformed in accordance with the movement of the cylindrical roll members in the lengthwise direction.