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Papermaking roll cover and method for its production

A technology for covering and manufacturing rolls, which is applied to the roll covering of paper machines and papermaking processes. It imparts surface characteristics and functionality to the covering of the roll. In the field of manufacturing roll covering, it can solve the problem of coating Uneven etc.

Inactive Publication Date: 2006-02-08
ALBANY INT CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It should be understood that, at least in some of the above techniques, the coating is not uniform such that finishing steps such as surface grinding are necessary

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0021]The roll cover may be formed directly on the roll body itself, or the roll cover may comprise a substrate, which may be any conventional roll substrate known in the art, including woven, nonwoven, or knitted A substance consisting of any kind of yarn such as monofilament yarn, plied monofilament yarn, multifilament yarn, plied multifilament yarn or staple fiber yarn. For convenience, in the description herein, the term roll cover substrate will be used for both methods. The roll cover of the present invention can be manufactured by using apparatus similar to those described in US Patent Nos. 5,506,607 and 5,740,051, entitled "3-D Model Making Machine" and "3-D Model Making", respectively, the aforementioned patents The disclosure is incorporated herein by reference. For the purposes of the present invention, the apparatus has (A) support means for supporting the roll during manufacture of the roll cover; (B) drop-on-demand piezoelectric spraying means or other means sui...

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PUM

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Abstract

The present invention is a method for making a roll cover and a roll cover, wherein at least one material is applied to the surface of the roll or a base substrate. In a first embodiment, a single material is applied as a flowable phase. A uniform coating of the material is applied to the roll, and upon setting of the material, such as by cooling, curing, or other means, a smooth and permanent roll cover is formed upon the surface of the roll. In another embodiment, at least two materials are applied in flowable phases to the surface of the roll. The first material may be a sacrificial, removable first material, applied to the surface of the roll cover in a preselected pattern. After the sacrificial material has been applied, a second material, such as a functional resin, is applied to the surface of the roll cover with the sacrificial material removed after the second material has set. In another embodiment, the use of sacrificial material is avoided and the material is applied in a predetermined pattern. In a fourth embodiment, two or more different materials are applied.

Description

technical field [0001] The invention relates to the field of papermaking, in particular to a method for manufacturing a roll cover and a roll cover for a paper machine and a papermaking process. The present invention relates to imparting surface characteristics and functionality to roll cover layers. Background technique [0002] Certain papermaking applications use a press nip on a paper machine where the formed web contacts two different surfaces: the press fabric surface and a press roll surface. In the past, such press nips have included a pair of counter-rotating steel rolls or steel rolls cooperating with counter-rotating granite rolls or the like. [0003] Since the roll is smooth, no patterns or changes are created in the surface topography of the paper product during its contact with the roll. The rollers may also have some other function, such as smoothing the paper as in a calender. The rolls can also be press rolls. In the case of press rolls, the web is in c...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D21F3/08B05D1/32B29C41/08B29C41/36B29C41/52D06N7/00
CPCD21F3/08Y10T442/2139B05D2254/02Y10T428/2481Y10T442/2098D06N2205/023Y10T442/2041B05D1/327B29C41/085B29C41/52D06N7/00D06N7/0092B29C41/36B33Y80/00
Inventor 法兰西斯·L·戴凡波特毛里斯·帕昆
Owner ALBANY INT CORP