Production of paper with decorative, non-rectilinear edges
AssigneeSvecia Antiqua SA
InventorIngvar Nilsson
Life of this patent
Estimating the term…
Abstract
A method and apparatus of trimming a travelling web of paper along the longitudinal direction of the web comprising transporting the web through a trimming station and continuously trimming said web in said station, wherein said method comprises supporting a portion of said web on a support surface in said station such that a portion of said web to be trimmed off overhangs an edge of said support surface, contacting said overhanging portion of said web with a travelling endless member which crosses the edge of the said support surface to trap the overhanging portion of the web between the endless member and a tearing support member adjacent said edge to shear said overhanging portion continuously from the web.
Claims13
A method of trimming a traveling paper web comprising:
- transporting the web to a trimming station;
- supporting a portion of said web on a support surface in said station such that a portion of said web to be trimmed off overhangs an edge of said support surface;
- contacting the overhanging portion of said web with a traveling endless member which crosses said edge of said support surface to trap said overhanging portion between said endless member and a tearing support member adjacent said edge to shear said overhanging portion continuously from said web so as to continuously trim said web along the longitudinal direction thereof;
- and
- following said trimming along the longitudinal direction of said web, separating said web into sheets;
- conveying said sheets to a device which changes the orientation of said sheets;
- and
- changing the orientation of said sheets with respect to their original direction of travel by 90.degree. so that said edges which were trimmed longitudinally prior to separation of said web into sheets are disposed traversed to the new direction of travel.
An apparatus for trimming a travelling web of paper along the longitudinal direction of said web comprising:
- a trimming station;
- means for transporting a web to be trimmed through said trimming station;
- a support surface in said station for supporting a portion of said web such that a portion of said web to be trimmed overhangs an edge of said support surface;
- a travelling endless member which crosses said edge of said support surface;
- a tearing support member adjacent to said edge and opposing a portion of the run of said endless travelling member whereby said travelling endless member contacts the overhanging portion of said web to trap said overhanging portion of said web between said endless member and said tearing support member adjacent said edge to shear said overhanging portion continuously from said web;
- means for separating said web into sheets after trimming in the longitudinal direction of said web;
- and
- means for changing the orientation of sheets with respect to their original direction of travel by 90.degree. so that said edges which were trimmed longitudinally prior to separation of said web into sheets are disposed transverse to the new direction of travel.
Dependencies are inferred from the claim text.