Device for micro-embossing of paper and paper processing line comprising said device
AssigneeGambini S.P.A.
InventorsFabio Picchi, Giovanni Buffa
Life of this patent
Estimating the term…
Abstract
A device for micro-embossing paper includes at least one micro-embossing unit to micro-emboss a wet paper ply. The micro-embossing unit includes a micro-embossing cylinder and a counter cylinder facing the micro-embossing cylinder at an embossing area where the wet paper ply is subjected to micro-embossing, and a heater to dry the wet paper ply. The micro-embossing cylinder includes a side surface partially wrapped by the wet paper ply. The heater heats at least one portion of the side surface partially wrapped by the wet paper ply to dry the wet paper ply.
Claims12
A device for micro-embossing paper, comprising:
- at least one micro-embossing unit configured to micro-emboss a wet paper ply, said micro-embossing unit comprising:
- a steel micro-embossing cylinder and a rubber counter cylinder facing said steel micro-embossing cylinder at an embossing area where said wet paper ply is subjected to micro-embossing, and
- heating means configured to dry said wet paper ply,
- wherein said steel micro-embossing cylinder comprises a side surface partially wrapped by said wet paper ply over a wrapping angle comprised between 120° and 300°,
- wherein said heating means are configured to heat at least one portion of said side surface partially wrapped by said wet paper ply to dry said wet paper ply,
- wherein said at least one micro-embossing unit comprises at least one motorised return roller, and a path of said at least one wet paper ply being in contact with said rubber counter cylinder exclusively at said embossing area, and
- wherein axes of rotation of said steel micro-embossing cylinder and said rubber counter cylinder lie in a same substantially horizontal plane.
A method for the micro-embossing of paper comprising:
- wetting at least one paper ply to obtain at least one wet paper ply;
- embossing said at least one wet paper ply between one steel micro-embossing cylinder and a rubber counter cylinder in an embossing area;
- heating said at least one wet paper ply to dry said at least one wet paper ply;
- at least partially wrapping said at least one wet paper ply around the side surface of said steel micro-embossing cylinder over a wrapping angle comprised between 120° and 300°;
- heating at least one portion of said side surface partially wrapped by said wet paper ply to dry said wet paper ply;
- and
- returning said at least one wet paper ply by at least one motorised return roller and contacting said at least one wet paper ply with said rubber counter cylinder exclusively at said embossing area,
- wherein axes of rotation of said steel micro-embossing cylinder and said rubber counter cylinder lie in a same substantially horizontal plane.
Dependencies are inferred from the claim text.