Folding roller comprising coating
Assigneemanroland Goss web systems GmbH
InventorsJohn James Sposato, JR., David Clarke Pollock, David Robert Tuliano
Life of this patent
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Abstract
A folding roller for folding signatures in a folding apparatus comprises a cylindrical folding rolling element comprising a jacket surface at least partially having an elastic coating that is compressible. As such, different folded products and/or folded products of different thicknesses can be produced without a change of the nip between the folding roller pair with consistent folding quality, and an adjustment of the nip is also not required during a production run printing or an ongoing production.
Claims16
A folding roller for folding signatures in a folding apparatus, wherein the folding roller comprises a cylindrical folding rolling element comprising a jacket surface, wherein the jacket surface at least partially has an elastic coating that is compressible.
A folding apparatus for forming a fold at a signature to be folded, wherein the signature to be folded is pressed by means of a folding blade into an incoming nip of a counter-rotating folding roller pair in order to form a gap, wherein at least one roller of the counter-rotating folding roller pair is a folding roller comprising a jacket surface that at least partially has an elastic coating.
A method for operating a folding apparatus, wherein to form a fold at a signature to be folded, the signature is pressed by means of a folding blade into an incoming nip of a counter-rotating folding roller pair spaced apart from one another at an axial distance, comprising providing two folding rollers having roller radii, wherein at least one of the folding rollers of the folding roller pair comprises a jacket surface that at least partially has an elastic coating, and placing the two rollers of the folding roller pair against one another in such a way that the axial distance is set to be identical to or smaller than the sum of the roller radii.
Dependencies are inferred from the claim text.