Patent ID: 6152345
Filing Date: 2000-11-28
Classification: B65H

Abstract:
A method for controlling width-wise contraction of web to be conveyed, comprising the steps of:(a) providing a source of web to be conveyed;(b) forming a generally serpentine web conveyance path for supporting the web solely on its edges, the serpentine web conveyance path having an ingress lip to receive said web to be conveyed and an egress lip for releasing said web to be conveyed from said generally serpentine web conveyance path the conveyance path being formed by a pair of opposing first web carrier belts for supporting one lateral edge of said web to be conveyed and a pair of opposing second web carrier belts for supporting the opposite lateral edge of said web to be conveyed and a plurality of spaced offset support rollers for exerting tension on said web carrier belts thereby conforming said web carrier belts to said generally serpentine web conveyance path, and means for applying tension to the carrier belts; and(c) introducing said web to be conveyed into said ingress lip of said generally serpentine web conveyance path for conveyance through said generally serpentine web conveyance path and then through said egress lip of said generally serpentine web conveyance path for subsequent independent treatment.