Roller provided for use in coating machines
AssigneeVoith Paper Patent GmbH
InventorsMartin Kustermann, Michel Beltzung, Thomas Stübegger
Life of this patent
Estimating the term…
Abstract
A roller is provided for use in coating machines. The roller directly or indirectly applies a liquid or pasty medium to one or both sides of a running web of material, especially one made of paper or paperboard. The roller includes a core whose outer casing is provided with a covering made of an elastomeric material. The covering is designed such that it can be compressed.
Claims37
An apparatus for direct application of a coating medium to a moving fiber material web, said apparatus comprising:
- an applicator unit configured for applying the coating medium to the web;
- and
- a roll configured for guiding the web, said roll including:
- a core having an outer surface;
- a compressible covering formed of an elastomeric material, said elastomeric material having a plurality of substantially uniformly distributed cavities, said cavities being of a substantially uniform size;
- and
- a bonding layer joining said covering to said outer surface of said core, said covering including an outer functional layer and at least one intermediate layer disposed within said outer functional layer, said outer functional layer being formed of a solid elastomeric material having a thickness of approximately between 1 mm and 15 mm.
An apparatus for direct application of a coating medium to a moving fiber material web, said apparatus comprising:
- an applicator unit configured for applying the coating medium to the web;
- and
- a roll configured for guiding the web, said roll including:
- a core having an outer surface;
- a compressible covering formed of an elastomeric material, said elastomeric material having a plurality of substantially uniformly distributed cavities, said cavities being of a substantially uniform size;
- and
- a bonding layer joining said covering to said outer surface of said core, said covering including an outer functional layer and at least one intermediate layer disposed within said outer functional layer, said at least one intermediate layer being compressible, said at least one intermediate layer having a thickness of approximately between 1 mm and 50 mm, said at least one intermediate layer having a hardness of approximately between 1 P&J and 300 P&J.
An apparatus, wherein for direct application of a coating medium to a moving fiber material web, said apparatus comprising:
- an applicator unit configured for applying the coating medium to the web;
- and
- a roll configured for guiding the web, said roll including:
- a core having an outer surface;
- a compressible covering formed of an elastomeric material, said elastomeric material having a plurality of substantially uniformly distributed cavities, said cavities being of a substantially uniform size;
- and
- a bonding layer joining said covering to said outer surface of said core, said covering being monolithic having a thickness of approximately between 1 mm and 50 mm, said covering having a hardness of approximately between 1 P&J and 300 P&J.
An apparatus for indirect application of a coating medium to a moving fiber material web, said apparatus comprising:
- a backing device configured for supporting the web;
- an applicator unit configured for applying the coating medium;
- and
- a roll defining a press nip with said backing device, said press nip being configured for receiving the web, said roll being configured for receiving the coating medium from said applicator unit and transferring the coating medium to the web in said press nip, said roll including:
- a core having an outer surface;
- a compressible covering formed of an elastomeric material, said elastomeric material having a plurality of substantially uniformly distributed cavities, said cavities being of a substantially uniform size;
- and
- a bonding layer joining said covering to said outer surface of said core.
Dependencies are inferred from the claim text.