Multi-layer paper sheet gap former and method

A sandwich forming and paper sheet technology, applied in papermaking, paper machines, textiles and papermaking, etc., can solve the problems of large floor area, poor product quality, high energy consumption, etc., achieve small floor space, low manufacturing cost, The effect of low energy consumption

Inactive Publication Date: 2009-01-07
SOUTH CHINA UNIV OF TECH
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Problems solved by technology

This technology has disadvantages such as large area, high energy consumption, low efficiency, and poor product quality.

Method used

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  • Multi-layer paper sheet gap former and method

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Embodiment Construction

[0024] The present invention will be described in further detail below with reference to the accompanying drawings and examples, but the embodiments of the present invention are not limited thereto.

[0025] Such as figure 1 As shown, the multi-layer paper sandwich forming device includes: the upper pulp distribution main pipe 1, the middle pulp distribution main pipe 2, the bottom pulp distribution main pipe 3, the upper pulp distribution branch pipe and the stepped diffusion pipe 6, the lower pulp distribution branch pipe and the stepped diffusion pipe 4 , Medium distribution slurry branch pipe and stepped diffuser pipe 5, multi-layer headbox main body 7, long drifter fixed support 10, short drifter fixed support 9, long drifter 12, short drifter 13, one of the blocking seals 14. The second cover sheet 15, vacuum breast roller 16, vacuum forming roller 17, lower dehydration net 18, upper dehydration net 19, dehydration plate group 20, vacuum dehydration box group 21, vacuum ...

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Abstract

The invention discloses a device and method for forming multi-layer paper sheet sandwich net. An upper dehydration net and a lower dehydration net form upper and lower sandwich nets, the two nets between a vacuum forming roller and a vacuum breast roller are integrated to compose to a wedge-shaped opening for containing paper pulp; the wedge-shaped opening are divided into three parts by a long drift sheet and a short drift sheet from top to bottom, the long drift sheet is fixed on the main body of a multi-layer head box by a long drift sheet fixing support, the short drift sheet is fixed on the main body of the multi-layer head box by a short drift sheet fixing support. The method comprises that a lower layer A pulp flow enters into the dehydration wedge-shaped area for performing primary dehydration, then converges with a middle layer B pulp flow at initial end of dehydration sheets, the B pulp flow is evenly arranged above the A pulp flow, an upper layer C pulp flow enters into the dehydration wedge-shaped area for performing primary dehydration, but paper web is not formed yet, from the middle parts of the dehydration sheets, the A, B, C pulp flows are dehydrated together through the dehydration sheets and the vacuum dehydration tank, finally three layers of paper webs are formed. The invention has advantages of simple process, low energy consumption, less investment and compact structure.

Description

technical field [0001] The invention relates to a paper sheet forming device and method, in particular to a multi-layer paper sheet sandwich forming device and method. Background technique [0002] Multi-layer forming technology is a new papermaking technology that dehydrates and forms multi-layer flowing pulp at the same time to obtain a multi-layer fiber structure. Its advantages are: 1) It can change the fiber ratio of the surface layer and the middle layer, and can use more secondary fibers in the middle layer to achieve the purpose of saving resources, protecting the environment, and optimizing the internal and surface structure of the paper sheet; 2) Adopting multi-layer forming Technology that produces paper and board with special functions or properties and significantly improves the quality of paper or board. [0003] At present, the multi-layer paper sheet forming device that is more widely used is mainly the multi-circle network forming device. Chinese utility m...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D21F5/14D21F3/04
Inventor 陈克复莫立焕李军杨仁党杨飞
Owner SOUTH CHINA UNIV OF TECH
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