Device for applying a treatment substance

Device for applying a treatment substance (2.1, 2.2), in particular starch, on at least one side of a running product web (13), in particular a paper or board web, by means of a least one curtain coater (1.1, 1.2) having a discharge nozzle (14.1, 14.2) and at least one press nip (N) following the cu...

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Bibliographische Detailangaben
Hauptverfasser:	Pesch, Andreas, Davydenko, Eduard
Format:	Patent
Sprache:	eng
Schlagworte:	IMPREGNATING OR COATING OF PAPER METHODS OF PRODUCING PAPER THEREON PAPER NOT OTHERWISE PROVIDED FOR PAPER-MAKING PAPER-MAKING MACHINES PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D PRODUCTION OF CELLULOSE PULP COMPOSITIONS TEXTILES TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G
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Beschreibung
Zusammenfassung:	Device for applying a treatment substance (2.1, 2.2), in particular starch, on at least one side of a running product web (13), in particular a paper or board web, by means of a least one curtain coater (1.1, 1.2) having a discharge nozzle (14.1, 14.2) and at least one press nip (N) following the curtain coater (1.1, 1.2) for forming a hydraulic pressure when the product web (13) passes through a press nip (N) which is formed by one of two rotating press rolls and which causes the treatment substance (2.1, 2.2) to penetrate into the product web (13), wherein the at least one press nip (N) is equipped with at least one heated applicator roll (7, 8) as a press roll to increase the penetration of the treatment substance (2.1, 2.2) into the product web (13), and at least one of the two press rolls (8) is designed with a fixed or adjustable crown (16) for the adjustment of a line load in a range of 20 to 200 kN/m.