Apparatus for coating moving fiber webs
AssigneeVoith Paper Patent GmbH
InventorsKnut Helmer, Edwin V. Bowden
Life of this patent
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Abstract
An apparatus for coating a moving, web, in particular a paper or cardboard web, on one or both sides with a liquid or pastous coating material includes a coating station for applying the coating material onto the web, as well as a non-contact turning apparatus following the coating station in the moving direction of the web. The web moves in only one plane from the point of exit from the coating station to the point of entry into the non-contact turning apparatus) without changing direction.
Claims42
An apparatus for coating a moving fiber web on at least one side thereof with a coating material, the coating material being one of liquid and pastous, the moving fiber web having a web moving direction associated therewith, said apparatus comprising:
- a coating station for applying the coating material onto the web, the fiber web leaving said coating station at a coating station exit point;
- and
- a non-contact turning apparatus following said coating station, relative to the web moving direction, the fiber web entering said non-contact turning apparatus at a turning apparatus entry point, said coating station and said non-contact turning apparatus being conjunctively configured such that the fiber web moves substantially in only one plane between said coating station exit point and said turning apparatus entry point without changing direction.
A coating facility for coating a moving fiber web on at least one side thereof with a coating material, the moving fiber web having a web moving direction associated therewith, said coating facility comprising:
- a plurality of coating apparatuses, said coating apparatuses being arranged in successive sequence, each said coating apparatus comprising:
- a coating station for applying the coating material onto the web, the fiber web leaving said coating station at a coating station exit point;
- and
- a non-contact turning apparatus following said coating station, relative to the web moving direction, the fiber web entering said non-contact turning apparatus at a turning apparatus entry point, said coating station and said non-contact turning apparatus being conjunctively configured such that the fiber web moves substantially in one plane only between said coating station exit point and said turning apparatus entry point without changing direction.
A gas distributor for use in at least one of a non-contact turning apparatus and a drying apparatus for moving a fiber web, the fiber web having a web surface, said gas distributor comprising:
- an elongated hollow body having a longitudinal body direction, said longitudinal body direction arranged so as to extend parallel to the web surface, said hollow body having a longitudinal center and a wall section, said hollow body comprising:
- a gas intake located at said lonqitudinal center of said hollow body, and
- a gas exhaust section located at said wall section of said hollow body, said gas exhaust section being arranged so as to face the web surface and be essentially parallel thereto.
A drying and turning apparatus for moving a fiber web, the fiber web having a web surface and further having a web moving direction associated therewith, said drying and turning apparatus comprising:
- at least one gas distributor extending transversely to the web moving direction, each said gas distributor comprising:
- an elongated hollow body having a longitudinal body direction, said longitudinal body direction arranged so as to extend parallel to the web surface, said hollow body having a longitudinal center and a wall section, said hollow body comprising:
- a gas intake located at said longitudinal center of said hollow body;
- and
- a gas exhaust section located at said wall section of said hollow body, said gas exhaust section being arranged so as to face the web surface and be essentially parallel thereto.
The drying and turning apparatus of claim 39, wherein a flow throttle device is located in said gas suction hood between said distributor groups, said flow throttle device being arranged in an essentially vertical direction and substantially parallel to said gas distributors, said gas suction hood having a vertically-oriented hood cross-section, said flow throttle device extending over at least a part of said vertically-oriented hood cross-section.
An arrangement for at least one of drying and turning a moving fiber web, the fiber web having a web surface and further having a web moving direction associated therewith, said arrangement comprising:
- a plurality of arranged units, each said arranged unit being configured for at least one of drying and turning the fiber web, said arranged units including a first arranged unit and a second arranged unit, each said arranged unit comprising a plurality of gas distributors located substantially parallel to one another, said gas distributors extending essentially transversely to the fiber web and spaced apart from each other relative to the web moving direction, said first unit and said second unit being located opposite one another relative to the fiber web.
Dependencies are inferred from the claim text.