Constant part for a paper machine

A technology for making paper and making machines, which is applied in paper machine, paper making, wet end of paper machine, etc., can solve the problem of high cost and achieve the effect of improving product qualification rate

Inactive Publication Date: 2010-07-14
VOITH PATENT GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] This is expensive and requires a lot of space

Method used

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  • Constant part for a paper machine
  • Constant part for a paper machine
  • Constant part for a paper machine

Examples

Experimental program
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Effect test

Embodiment Construction

[0022] In a paper machine sizing system, the high consistency stock streams 1 in both cases are brought together and filled with fibrous material and fillers in accordance with the specifications of the paper mill, in a manner known per se, i.e. in a mixing tank 6 Mix according to the predetermined mixing ratio.

[0023] The paper machine begins with a headbox 3 and an adjoining former 11 for forming a web 9 of fibrous material. In this process, the finished stock suspension is fed onto the forming wire 10 via one or more nozzles of the headbox 3 .

[0024] In the former 11 and subsequent paper machine units, white water is collected and fed back to the sizing system. The use of white water to form the low consistency stock stream 2 not only helps to save costs compared to using fresh water, but also allows the reuse of fiber raw materials and fillers contained in the white water.

[0025] In the sizing system, the white water, that is, the low-concentration stock flow 2 is ...

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PUM

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Abstract

The invention relates to a method and arrangement for generating a finished pulp suspension for producing a paper, cardboard, tissue, or other pulp web (9) by mixing at least one high-consistency flow (1) of newly prepared pulp and filler, and at least one low-consistency flow (2), preferably formed of white water, in a constant part of a machine for producing the pulp web (9). The effort for degassing and cleaning should be thereby reduced, in that the low-consistency flow (2) is fed through a degassing device (4) before mixing, a part of the degassed low-consistency flow (2) is mixed with the high-consistency flow (1) in a mixing device (5), such that a material density of between 2.1 and 2.5% results in the high-consistency flow (1), the mixed high-consistency flow (1) runs through at least one cleaning device (8), and the cleaned high-consistency (1) and the residual low-consistency (2) flows are mixed before and / or in a headbox (3) of the machine.

Description

technical field [0001] The present invention relates to a method of making a finished stock suspension for the manufacture of paper, board, tissue or other webs of fibrous material, wherein in the approach flowsystem of a web making machine of fibrous material at least one of the A high consistency stock stream of filler and freshly prepared fiber material is mixed with at least one low consistency stock stream of white water. [0002] The invention also relates to an apparatus for producing a finished stock suspension for the manufacture of paper, board, tissue or other webs of fibrous material, comprising a mixer for use in the sizing system of a web making machine for fibrous material, At least one high consistency stock stream of filler and freshly prepared fiber material is mixed with at least one low consistency stock stream of white water. Background technique [0003] In the sizing system of the paper machine, the high-concentration qualified stock is diluted with w...

Claims

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Application Information

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IPC IPC(8): D21F1/08D21F1/66D21D5/26
CPCD21F1/66D21F1/08D21D5/26
Inventor 卡尔-海因茨·比尔曼赫尔曼·施密德欧文·宾德克劳斯·莱利特克里斯琴·班格特约翰尼斯·埃克
Owner VOITH PATENT GMBH
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