Device for coating a fluid to pasty coating medium such as glue, starch or coating color on a side of a running paper, cardboard or other fiber material web, comprises two rotatable transfer elements or rotatable endless bands

摘要

The device comprises two rotatable transfer elements (5a, 5b) or rotatable endless bands that are associated to a coating aggregate (6a, 6b). The transfer element transfers a coating medium (3) applied with the coating aggregate on its surface in a press gap at the relevant side of fiber material web (2). The transfer element is associated to an insulation element and/or to a heating element (9a, 9b). The insulation element is arranged downstream in the rotation direction of the transfer element equipped with the coating aggregate and/or the heating element. The device comprises two rotatable transfer elements (5a, 5b) or rotatable endless bands that are associated to a coating aggregate (6a, 6b). The transfer element transfers a coating medium (3) applied with the coating aggregate on its surface in a press gap at the relevant side of fiber material web (2). The transfer element is associated to an insulation element and/or to a heating element (9a, 9b). The insulation element is arranged downstream in the rotation direction of the transfer element equipped with the coating aggregate and/or the heating element. The heating element influences by coating medium externally applied on the surface of the transfer element. The heating element produces a processing temperature of 75-97[deg] C and is infrared radiator that is electrically heated or heated by gas. The insulation element is arranged in an interval of 1-20 mm over the surface of the transfer element that partially overstretches the surface of the transfer element, and passes into direct vicinity of the press gap. The insulation element is covered with a material, which has a low thermal conductivity. The transfer elements form a coating plant in the form of a glue press and/or film press for simultaneous coating of both sides or for individual coating of one of the sides of the fiber web with the coating medium.