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US 5,393,589 AGranted
Apparatus and method for variably knurling edges of web and product produced thereby
AssigneeEastman Kodak Company
InventorsJohn J. Zeller, Robert C. Brown, Zbigniew Hakiel, Allan T. Hoy, Arthur M. Stewart
Life of this patent
Estimating the term…
Abstract
Webs are provided with edge knurls whose effective height varies along the length of the web in a predetermined manner.
Claims41
Apparatus for providing on a web of sheet material an edge knurl which varies longitudinally in effective height along the length of said web, comprising:
- means for conveying a web having longitudinal edges and sides along a path;
- means for applying to said longitudinal edges on at least one of said sides of said web at least one longitudinally extending pattern of regions having a pattern height extended past the surface of the remainder of said web;
- means for controllably varying said means for applying to cause the compressibility and, hence, said effective height of said regions to vary in a predetermined manner along the length of said web after winding;
- and
- means for winding said web into a roll following application of said pattern, said web having an inner end and an outer end.
2 more elements
An article of manufacture comprising:
- a roll of web material having longitudinal sides and edges and an inner end and an outer end in said roll;
- and
- along said longitudinal edges on at least one of said sides, at least one longitudinally extending pattern of regions having a pattern height extended past the surface of the remainder of said web, the compressibility and, hence, the effective height of said regions varying along the length of said web in a controlled, predetermined manner after winding.
A method for providing knurls of varying effective height longitudinally along at least one edge of a web of sheet material, comprising the steps of:
- conveying a web having longitudinal edges and sides along a path;
- applying to said longitudinal edges on at least one side of said web at least one longitudinally extending pattern of regions having a pattern height extended past the surface of the remainder of said web, while controllably varying the compressibility and, hence, said effective height of said regions along the length of said web in a predetermined manner after winding;
- and
- winding said web into a roll, said web having an inner end and an outer end in said roll.
1 more element
Dependencies are inferred from the claim text.