US 2009/0243144 A1 · SUPPORT ROLLER, WEB CONVEYANCE METHOD, SOLUTION CASTING METHOD AND SOLUTION CASTING APPARATUS

Abstract

A support roller includes a roller body and a rotary shaft, and supports a web under conveyance with a peripheral surface of the roller body. The peripheral surface includes edge contact areas and a merchandise portion contact area. The edge contact areas make contact with edges in a width direction of the web. Each edge contact area has projections and recesses that have an arcuate cross section, and extend in the peripheral direction of the roller body. The projections and the recesses are arranged alternately in an axial direction. The projections are spaced at intervals from 0.01 mm to 2 mm. A height from a bottom of the recess to an apex of the projection is from 0.01 mm to 1 mm. The apex has a curvature radius in a range from 0.1 mm to 0.5 mm.

Claims15

Dependent claims

A support roller disposed alongside a conveyance path for a web so as to support said web, comprising:

a roller body in solid cylinder shape, whose peripheral surface includes edge contact areas, said edge contact areas making contact with edges in a width direction of said web;
and
a plurality of projections provided in each of said edge contact areas, and formed to extend in a peripheral direction of said roller body, and arranged at intervals in a rotation axis direction of said roller body, and upon being viewed in cross section taken along said rotation axis, each of said projections having an apex of substantially arcuate shape with a curvature radius of not less than 0.1 mm and not more than 0.5 mm, and said intervals being not less than 0.01 mm and not more than 2 mm, and each of said projections having a height of not less than 0.01 mm and not more than 1 mm from said apex to a bottom of a recess formed between adjacent said projections.

A support roller disposed alongside a conveyance path for a web so as to support said web, comprising:

a roller body;
tapered sections disposed on both ends in a rotation axis direction of said roller body, and each provided with an edge contact area which makes contact with one of edges in a width direction of said web, and formed to increase its diameter gradually toward an extreme end of said roller body;
a constant diameter section disposed on the center in said rotation axis direction of said roller body, and provided with a merchandise contact area which makes contact with a merchandise portion that covers all across said web except said edges, and formed to keep a constant diameter throughout its length in said rotation axis direction;
and
a plurality of projections provided in said edge contact areas, and formed to extend along a peripheral direction of said roller body, and arranged at regular intervals in said rotation axis direction of said roller body, and when viewed in cross section taken along said rotation axis, said projections having an apex of substantially arcuate shape.

2 more elements

Dependencies are inferred from the claim text.

Support roller, web conveyance method, solution casting method and solution casting apparatus

Life of this patent

Support roller, web conveyance method, solution casting method and solution casting apparatus

Life of this patent

Abstract

Claims15