Patent ID: 8656605

Claim:
A rotating, foraminous thin shelled roll for drying permeable and semi-permeable webs comprising: a) a pair of spaced apart, parallel end members, each having an inner face, b) a plurality of alternating straight thin divider strips and bent thin strips extending axially between and evenly-spaced in a circle around the inner faces of the end members to form an annular cylinder having a longitudinal axis, wherein: i. the bent strips define radial channels along the length of the adjacent divider strips for receiving air therethrough, thereby providing the foraminous characteristic of the thin shelled roll, ii. the foraminous wall of the cylinder comprises two tiers of bent strips disposed between the straight strips, and iii. an axial channel extends concentrically along the longitudinal axis between the two tiers of bents strips from one end member to the other; c) at least one impervious thin strip disposed about the surface of the annular cylinder and aligned at one fixed edge with an end member, thereby reducing the width of the foraminous area of the thin shelled roll; and d) at least one impermeable insert aligned at and/or near the free edge of the impervious strip and extending through a radial channel and across the entire axial channel and at least a portion of the faces of the two tiers of bent strips so as to block the axial channel therebetween completely and prevent the passage of air therethrough to the end member.