Expander Roller for Fold-Free Expansion of Foils
AssigneeKoti Onroerend Goed B.V.
InventorMichel Jozef Rene Lambert HUYBRECKX
Life of this patent
Estimating the term…
Abstract
An expander roller for a fold-free expansion of foils, webs, and sheet materials in a width dimension. The expander roller has a central metal axle mounted in a surrounding synthetic tube with placed on its circumference a grid of implanted brush plugs in an axial direction under an angle alpha and with a mutual distancing and in tangential direction under a center angle beta and with a mutual distance. The roller provides a perfect expanding or stretching of thin widths of different materials.
Claims10
Expander roller with working length L and on an outer circumference surface oblique implanted elastic brush plugs are placed, which are halfway the length L obliquely implanted to opposite ends of said expander roller for expanding or stretching widths of thin materials, foils and webs, wherein said expander roller is a built-up roller tube with a total circumference radius R, a usable length of 2×L/2 and with said opposite ends placed in a support structure for free rotation, wherein said circumference surface has a grid of said obliquely implanted brush plugs with a free length t, wherein said brush plugs form an angle alpha (α) in axial direction over length L/2 to the opposite ends of the expander roller with a vertical placed on the outer circumference surface and with an angle partly beta β(β=α/p) with a normal in a tangential direction thereof, wherein a mutual center distance of the brush plugs in the rows is X in said axial direction, wherein a mutual distance of said radial distances of the brush plugs is determined by the center angle beta (β) and radius r of the expander roller and wherein each following row of brush plugs on the circumference surface is shifted ½× to each other in axial direction.
Dependencies are inferred from the claim text.