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Method in a multiroll calender, a multiroll calender and a method for loading a calender roll of a multiroll calender and a multiroll calender

A technology of calender and calender rollers, applied in the field of multi-roll calender, multi-roll calender for calendering fiber web, and calender, which can solve the problem that the number of nips is not completely replaceable, and achieve friction Small, improved precision, friction-reducing effect

Inactive Publication Date: 2009-03-11
METSO PAPER INC
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

According to calendering theory, it is known that the number of nips is not completely replaceable due to the increase of linear load

Method used

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  • Method in a multiroll calender, a multiroll calender and a method for loading a calender roll of a multiroll calender and a multiroll calender
  • Method in a multiroll calender, a multiroll calender and a method for loading a calender roll of a multiroll calender and a multiroll calender
  • Method in a multiroll calender, a multiroll calender and a method for loading a calender roll of a multiroll calender and a multiroll calender

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Embodiment Construction

[0064] In the following figures 1 to Figure 22 In , unless otherwise stated, the same reference numerals are used to denote components and structures that substantially correspond to each other.

[0065] Figures 1 to 7 schematically show a part of an embodiment of the method according to the invention for realizing various types of runs carried out in a multi-roll calender with two sets of rolls. The multi-roll calender 150 shown in Figures 1 to 7 comprises two sets of rolls 20A and 20B, the fiber web W being calendered in the nip between the calender rolls of said set of rolls. Reference numerals 21B-26B from the upper end refer to rolls of the roll set 20B, and reference numerals 21A-25A refer to rolls of the roll set 20A. In the embodiment shown in these figures, rolls 21A, 25A, 22B, 26B are soft surface (polymer surface) sym type rolls; rolls 22A, 24A, 23B, 25B are steel rolls (either heatable and / or coolable rolls); rolls 23A, 23B are polymer-surfaced rolls; roll 21B i...

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Abstract

The invention relates to a method for a multi-roll calender and the multi-roll calender for calendering a fiber web. In the method, the fiber web, in particular a paper web or a paper board web, is calendered by the multi-roll calender comprising two sets of rolls; the two sets of rolls are provided with at least two calendering rolls; in the method, a calendered work area is maximized, namely, a loading system of the rolls and a loading system of the calender are designed into a running area for providing wide linear load kN / m x calendered area number. The multi-roll calender comprises the two sets of rolls comprising at least two calendering rolls, and is characterized in that a possible calendered work area obtaining the maximum width, namely, a loading system of a calendering device and the loading system of the calender can achieve the running area wide kN / m x calendered area number. Therefore, the calendering method and the calender suitable for quite diversified levels of various different papers can be obtained.

Description

[0001] The application date is November 10, 2005, the application number is 200580030982.8 (the international application number is PCT / FI2005 / 050405), and the title of the invention is "Method for multi-roll calender and multi-roll calender and a A method for loading calender rolls of a multi-roll calender and a multi-roll calender" is a divisional application of the invention patent application. technical field [0002] The invention relates to paper and board machines, in particular to calenders. More specifically, the invention relates to a method for a multi-roll calender and a multi-roll calender for calendering a fiber web. Background technique [0003] Calendering is usually carried out in order to improve the properties of web-like materials such as paper or board webs, such as smoothness and gloss. During calendering, the web enters a nip formed between rolls pressed against each other, ie the calendering nip, where the web is deformed under the action of temperat...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D21G1/00D21G1/02D21G
CPCD21G1/00D21G1/002
Inventor 凯萨·坎塔宁马尔库·S.·马利宁哈里·库奥萨马尔库·屈策宁马尔库·科约阿托·伊科宁尤西·阿拉-莫诺宁佩卡·林农马马尔库·拉克索约尔马·哈格托米·诺比
Owner METSO PAPER INC
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