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Drying belt for a condensation drying device

A technology of drying device and drying belt, which is applied to the manufacture and/or processing of thin sheet materials, can solve the problems of unsuitable drawing paper, etc., and achieve the effect of good dimensional stability

Inactive Publication Date: 2010-01-06
VOITH PATENT GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Even the drying belt proposed in DE102006039102 with a web contact side provided by a nonwoven is still not suitable for the production of demanding graphic papers, such as copy papers

Method used

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  • Drying belt for a condensation drying device
  • Drying belt for a condensation drying device
  • Drying belt for a condensation drying device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0056] figure 1 A cross-section through a drying belt 1 according to the invention is shown. The drying belt 1 has a woven basic structure 2 mainly for the dimensional stability of the drying belt 1, which consists of filaments comprising polyester and / or PCTA and / or PCT and / or PEEK and / or PPS and / or high temperature resistant PA Shape material 3,4 constitutes. The drying belt 1 also comprises a non-woven fabric layer 5 which is arranged on the basic structure 2 and mainly provides the water absorption capacity for the drying belt 1. contact side. The nonwoven layer 5 here consists of a first polymer material 7 and a second polymer material 8 , wherein the first polymer material 7 has a lower melting point than the second polymer material 8 .

[0057] The first polymeric material 7 is here a thermoplastic, for example a copolyamide. The second polymeric material 8 is here a thermoplastic, in particular a polyamide.

[0058] Here the first polymer material and the second p...

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PUM

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Abstract

The present invention relates to a drying belt for a condensation drying device for a web production and / or finishing machine for paper, cardboard or tissue. The belt has a base structure composed of silkiness fibers of polyethylene and / or copolyester of cyclohexanedimethanol and purified terephthalic acid (PCTA) and / or polycyclohexylenedimethylene terephthalate (PCTA) and / or polycyclohexylenedimethylene terephthalate (PCT) and / or polyether ether ketone (PEEK) and / or polyphenylene sulfide (PPS) and / or polyamide (PA) with a high temperature resistance for providing a dimensional stability principally, and a nonwoven fabric layer arranged above the base structure for providing a water-absorbing capacity for the drying belt, the nonwoven fabric layer providing a contact side of the drying belt with material amplitude on its external side facing to the base structure, wherein the nonwoven fabric layer includes at least a first polymeric material located in the external side region, and is compressed by calendering at a melting point above the first polymeric material and the surface is polished in the external side region for providing the contact side of the material amplitude.

Description

technical field [0001] The invention relates to a drying belt of a condensation water drying device and a drying belt comprising a condensation water drying device for the manufacture and / or processing of sheet material ("sheet material" can also be called "web"), such as paper, card Machines for paper or tissue paper. Background technique [0002] In the condensate drying device of a paper machine, the moisture is thus extracted from the sheet material to be produced, ie the sheet material is heated on one side and cooled on the other side. The liquid contained in the sheet material is evaporated by heating. Liquid vapor is released from the sheet material and condenses on the outside of the sheet material by cooling. For this purpose, the sheet material is brought into contact on one side with a very finely structured drying belt, which is permeable to the liquid or liquid vapor released from the sheet material. A coarse-structured drying belt is arranged on the back si...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D21F5/00
CPCD21F7/086D21F7/083
Inventor 尤维·科克里茨马丁·斯泰格马赛厄斯·施密特
Owner VOITH PATENT GMBH