Size press with coating pool suppressing arrangement
AssigneeValmet Corporation
InventorErkki Koski
Life of this patent
Estimating the term…
Abstract
A size press having at least one coating nip avoids splashing of the sizing or equivalent coating agent by leading the web to be treated through said nip. Coating supply apparatus supplies coating pools at the nip entrance between a coating roller and the web entering said nip. The coating supply apparatus includes filling pieces in the nip entrance, placed in the coating pool in operating position. The filing pieces consist of permeable, porous, or perforated material and extend along the entire width of the web. The filling pieces suppress the coating pools and prevent or, at least, essentially decrease, the splashing of the coating agent.
Claims10
A size press having at least two coating rollers forming with each other at least one coating nip through which the web to be treated is arranged to run and coating pools at the entrance of the nip between the coating rollers and the web entering said nip, said size press comprising
- coating supply apparatus for supplying a coating agent to said coating pools, said coating supply apparatus including filling pieces at said entrance of said nip placed in said coating pools in operation, said filling pieces consisting of one of a liquid permeable porous, and perforated material and suppressing said coating pools and substantially decreasing and preventing splashing of the coating agent.
Dependencies are inferred from the claim text.