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Device and process for transferring a material web

A technology of roll paper and drying cylinder, which is applied in the field of devices for conveying roll paper materials

Inactive Publication Date: 2009-12-23
ANDRITZ AG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Continuously increasing machine speeds require higher and higher vacuum levels in the transfer area, especially in the pick-up area, but conventional sealing devices cannot always guarantee an adequate seal
Especially in conveyors with high vacuum levels, conventional seals are insufficient to perform this function satisfactorily

Method used

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  • Device and process for transferring a material web
  • Device and process for transferring a material web
  • Device and process for transferring a material web

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0023] figure 1 A web transport device 5 according to the invention is shown in . During operation, the web material 1 coming from the right is supported on the support belt 2 and guided on the first support surface 3 . In this example, the first support surface 3 is a rotating and heated drying cylinder. The web material 1 and the support belt 2 are then lifted off said first support surface by the web transport device 5 and transported to the subsequent support surface 4 . For this purpose, a vacuum is applied to the web transfer device 5, thereby lifting the web material 1 and the support belt 2 by suction off said first support surface 3 and stabilizing them until they are transferred to the subsequent support surface 4. On one side, the transfer zone 6 is sealed over the entire machine width by means of a sealing mechanism 10 which applies suction. In this example, the subsequent support surface 4 is a rotating suction roll around which the web material 1 and the supp...

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PUM

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Abstract

A device for transferring a material web includes a transfer zone to which vacuum can be applied and at least one sealing mechanism with sealing lips. The sealing mechanism limits or divides the transfer zone, where suction can be applied to a space between the sealing lips.

Description

technical field [0001] The invention relates to a device for conveying web material from a first support surface, such as a drying cylinder, to a subsequent support surface, such as a suction roll, the web being in particular produced by A web made of paper, board, fabric, or other pulp. [0002] The device comprises a transfer area to which a vacuum can be applied and at least one sealing mechanism having a sealing lip. The invention also relates to a method for conveying web material performed with the device of the invention. Background technique [0003] Such devices for web transport are used, for example, in dryer parts of paper machines. These dryer components generally consist of several drying cylinders and suction rolls, each of which are arranged in a row. The web to be dried, usually supported in a tortuous path by air-permeable support belts, advances from a first drying cylinder to a suction roll and on to another drying cylinder. Here, the web is guided ar...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B65H20/00B65H20/12F26B13/12D21F5/00
CPCD21G9/0063D21F5/042D21F5/046
Inventor 克劳斯·吉辛罗兰·施克迈克尔·雅诺施
Owner ANDRITZ AG