TH30732B - Conveyor belts for paper production. - Google Patents

Abstract

The DC60 belt, used in single-sided coated paper manufacturing belts consisting of a base layer and a thick resin layer, or single-sided coated paper manufacturing belts with thick and thin resin layers on opposite sides of the base layer, reduces edge curling due to shrinkage of the thick resin layer. This is achieved by forming an opposite edge section with a thinner resin layer than the center. This reduction in curling results in improved oil removal, especially for belts pressed with guide rails. Furthermore, this curl reduction stabilizes the belt rotation and aids in belt installation.

Claims (10)

1. A paper-making conveyor belt (1) is made up of a base layer (2) and a resin layer (3) formed on and covering one surface of the base layer (2). The resin layer (3) has a central section (C) and opposite side sections (A,B), and the thermal shrinkage of the base layer (2) and the resin layer is different, with the characteristic that the thickness of the opposite side sections (A,B) of the resin layer (3) is less than the thickness of the central section (C) of the resin layer (3). As a result, the side curling of the conveyor belt (1) resulting from the differential thermal shrinkage of the base layer (2) and the resin layer (3) is at least reduced. 2. A conveyor belt for paper production under claim 1, where a resin layer (3) on one surface of base layer (2) is a thick resin layer (3b) and a thin resin layer (3a) is formed on another surface of base layer (2). 3. A conveyor belt for paper production under claim 1 or 2 where the edges (A,B) of the resin layer (3,3b) on one surface of the base layer (2) have a constant thickness. 4. A conveyor belt for paper production under claim 1 or 2, where the thickness of each edge section (A,B) of the resin layer (3,3b) on one surface of the base layer (2) decreases from the center section (C) of the resin layer (3,3b) to each edge of the base layer. 5. A conveyor belt for paper production under claim 1 or 2, where each edge (A,B) of the resin layer (3) has a constant thickness region between two regions of decreasing thickness. 6. A conveyor belt for paper production under any of the claims, in the form of a conveyor belt with a control mechanism (43), where one surface of the base layer (2) is on the side of the conveyor belt with a control mechanism (43), where one surface of the base layer (2) is on the side of the conveyor belt with a control mechanism (43), which, when in use, is attached to the control mechanism (42). 7. A conveyor belt for paper production under either of the claims 1 or 5, in the form of a paper transfer belt (55), one surface of the base layer (2) is placed on the side of the paper transfer belt (55) which, when in use, is in contact with the wet paper (46) to be transferred. 8. The method of making a conveyor belt for paper production (1) is composed of the following steps: the arrangement of the base layer (2) and the formation of a resin layer on one surface of the base layer (2) that covers one surface of the base layer (2). The resin layer (3) has a central section (C) and opposite side sections (A,B), and the thermal shrinkage of the base layer (2) and the resin layer (3) is different; characterized by the rubbing of the opposite side sections (A,B) of the resin layer (3), so that the rolling of the side sections of the belt (1) resulting from the differential thermal shrinkage of the base layer (2) and the resin layer (3) is minimized. 9. The method under claim 8, which includes the formation of a thick resin layer (3b) on one surface of the base layer (2) and the formation of a thin resin layer (3a) on another surface of the base layer (2). 10. The procedure under claim 8 or 9, where the procedure of rubbing the opposite edges of the resin layer (3,3b) on one surface of the base layer (2) is combined with rubbing the opposite edges (A,B) of the resin layer (3,3b).