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Method for producing fiber webs and production line for producing fiber webs

一种纤维幅材、生产线的技术，应用在纤维幅材在压光机中的至少一个压光压区中被压光,生产纸板幅材,压光机的生产线领域，能够解决干燥能力有限、限制纸板机速度等问题，达到节省松厚度、高生产速度、节省原浆的效果

Inactive Publication Date: 2015-05-27
VALMET TECH OY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Yankee cylinders have been problematic in the manufacture of board due to their limited drying capacity, which limits the speed of the board machine

Method used

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  • Method for producing fiber webs and production line for producing fiber webs
  • Method for producing fiber webs and production line for producing fiber webs
  • Method for producing fiber webs and production line for producing fiber webs

Examples

Experimental program
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Embodiment Construction

[0076] In a very schematic example of a production line for the production of coated fiber webs, in particular for the production of coated paperboard webs, such as Figure 1A As shown, the start of the production line and components are indicated by the reference numeral "50". The start of the production line for the fibrous web W and the apparatus 50 comprise a headbox, a forming section, a press section, a drying section and may also comprise a size press. These devices and parts can be constructed in many different designs and configurations known to those skilled in the art. The line also includes a finishing section having finishing sections and equipment that can be constructed in a variety of different designs and configurations known to those skilled in the art. According to the invention, the production line also comprises: at least one calender 20A with at least one calendering nip NA formed between two calender rolls 101A, 102A; and a make-up evaporative cooling m...

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PUM

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Abstract

The invention relates to a method for producing a fiber web (W), in which method the fiber web (W) is calendered in at least one calendering nip (NA) of a calender (20A). The fiber web (W) is cooled at least partially by moisturizing evaporating cooling by a moisturizing evaporating cooling unit (10) before the fiber web is calendered and that the moisture is absorbed during 10 - 500 ms. The invention also relates to a production line for producing fiber webs (W), which comprises at least a calender (20A) with at least one calendering nip (NA). The production line for fiber webs, in particular for board webs, comprises a fiber web machine (50), in particular a board machine, which comprises a head box, a wire section, a press section and a drying section, and at least one moisturizing evaporating cooling module (10), a hard nip calender (20A) with a thermo roll, which has surface temperature at least 120 °C, and a reel-up (40).

Description

technical field [0001] The present invention generally relates to the production of fibrous webs, in particular cardboard webs, in a fibrous web line. More particularly, the invention relates to a method of calendering a fiber web in at least one calendering nip in a calender, and to a method comprising at least one calender with at least one calendering nip production line. Background technique [0002] It is known from the prior art that the production process of fibrous webs generally comprises an assembly formed by a number of devices arranged in succession along the production line. A typical production process line consists of a headbox, wire section, press section followed by a dryer section and a reel. The production treatment line may also comprise other equipment and / or sections for finishing the fibrous web, eg pre-calender, size press, final calender, coating section. The production processing line also includes at least one slitter-winder for forming customer...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D21G1/00D21H23/24D21H25/04
CPCD21G1/00D21H23/24D21H25/04D21H25/14D21H25/005D21G1/006D21F9/00
Inventor 雷约·皮耶蒂凯宁米卡·维尔扬马亚里·伊洛迈基塞波·卢奥米
Owner VALMET TECH OY
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