Method and system for impregnating and drying a continuous paper web

A drying and equipment technology, used in progressive dryers, lighting and heating equipment, dryer parts, etc., can solve the problems of not obtaining operational reliability, expensive electrical energy, etc., to prevent cross-linking, maintain maximum temperature, and high evaporation. The effect of power

Inactive Publication Date: 2013-10-23
VITS TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantage of this method is that the required operational reliability is not obtained
In addition, expensive electrical energy is required

Method used

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  • Method and system for impregnating and drying a continuous paper web
  • Method and system for impregnating and drying a continuous paper web

Examples

Experimental program
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Embodiment Construction

[0026] as from figure 1 As can be seen in , the apparatus for impregnating and drying a continuous paper web 1 comprises a first coating device 2 and a dryer 3 for metered coating of urea resin. A reel 4 for winding up the impregnated paper web 1 , which is conveyed in the direction of the arrow 5 , is preferably connected downstream of the dryer 3 .

[0027] The first coating device 2 comprises a welding roll 6 , a deflection roll 7 and a device (not shown) for conveying the urea resin.

[0028] Here, the dryer 3 comprises four substantially identically constructed drying zones 3.1, 3.2, 3.3, 3.4 in a modular manner and is surrounded by a housing. Between adjacent drying zones of the drying zones 3.1, 3.2, 3.3, 3.4, partitions are arranged respectively.

[0029] as from figure 2 As can be seen particularly clearly in , each drying zone 3.1, 3.2, 3.3, 3.4 comprises a circulating air blower 8, arranged above and below the paper web 1, for blowing the air guided as circulati...

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PUM

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Abstract

The invention relates to a method for impregnating and drying a continuous paper web (1) by means of a urea resin dissolved in water, and to a corresponding system. Such paper webs (1) are employed for example as furniture foil or floor laminate, wherein in the known art melamine resin is used exclusively for bonding to a substrate. This is relatively expensive. Therefore the object of the invention is to create a method in which the paper web (1) which is impregnated by means of urea resin can be bonded to the substrate with a high degree of operational reliability. Said object is achieved in that the temperature of the paper web (1) is determined separately in each of the drying zones (3.1, 3.2, 3.3, 3.4), that for each of the drying zones (3.1, 3.2, 3.3, 3.4) an amount and / or a temperature of the circulating air are regulated so that the maximum temperature of the paper web (1) is 99° C., and that exhaust air is extracted from a first one of the drying zones (3.1, 3.2, 3.3, 3.4) and fresh air is supplied to a last one of the drying zones (3.1, 3.2, 3.3, 3.4).

Description

technical field [0001] The invention relates to a method for the impregnation and drying of a continuous paper web with urea resin for water, wherein a metered amount of urea resin is applied to the paper web, which is guided in suspension in a dryer Through heated air and drying to a predetermined residual humidity, wherein at least part of the air is circulated, the temperature of the paper web is determined and the drying is controlled by varying the drying parameters in a plurality of different drying zones. [0002] Furthermore, the invention relates to a corresponding device for carrying out the method. Background technique [0003] Such impregnated paper webs are known per se and are used, for example, as furniture films or for laminate floors. Here, high demands are placed on quality. So far in practice mainly expensive melamine resins have been used for impregnation. [0004] In this case, the decorative paper is wetted with melamine resin and dried with hot air....

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F26B13/10D21F5/18D21H17/49D21H25/06D21H27/26
CPCD21H25/06D21F5/20F26B13/104D21H27/26D21F5/187D21H17/49D21F5/18
Inventor U·翁格尔A·登格尔利D·雅梅斯W·埃克伦茨
Owner VITS TECH
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