Liner paper production method

A production method and technology of liner paper, which is applied in the field of papermaking technology, can solve the problems of high-grade liner paper, high cost, and large steam consumption that have not been realized in the production of waste paper, so as to increase dryness, save energy, and reduce steam. The effect of using

Inactive Publication Date: 2017-10-10
ZHEJIANG JINGXING PAPER
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  • Abstract
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AI Technical Summary

Problems solved by technology

At present, in the production of domestic medium and high-grade facial paper, unbleached raw wood pulp is used for the surface layer, and domestic or imported waste paper is used for the core and bottom layer. The production of medium and high-grade liner paper has not been realized from all waste paper. In addition, the steam consumption in the existing production process is large. high cost

Method used

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] With reference to the production method of a kind of liner paper that often adopts described in the present invention, liner paper is produced, specifically:

[0036] 1) Prepare the surface layer, core layer and bottom layer slurry according to the ratio in Table 1.

[0037] 2) The three-layer pulp is dehydrated on the forming wire part through its respective headbox to form a wet paper sheet, and then compounded on the bottom wire, and is sucked by high vacuum to make a raw cardboard with a dryness of about 22%, which is sent to the press part for further processing. press;

[0038] 3) In the previous step, the original paperboard is mechanically dehydrated through one ordinary press and two shoe presses. After the dryness reaches more than 45%, it is dried in the drying section; the press line pressure is: first press 160KN / M, second press 940KN / M ;

[0039] 3) After the paper web passes through the calender, it forms a parent roll in the roll paper section, and the...

Embodiment 2

[0042] With reference to the production method of a kind of liner paper that often adopts described in the present invention, liner paper is produced, specifically:

[0043] 1) Prepare the surface layer, core layer and bottom layer slurry according to the ratio in Table 2.

[0044] 2) The three-layer pulp is dehydrated on the forming wire part through its respective headbox to form a wet paper sheet, and then compounded on the three-ply wire, and is sucked by high vacuum to make a raw cardboard with a dryness of about 22%, and sent to the press part squeeze;

[0045]3) In the previous step, the raw cardboard is mechanically dehydrated through one ordinary press and two shoe presses. After the dryness reaches more than 45%, it is dried in the drying section; the press line pressure is: first press 180KN / M, second press 1000KN / M ;

[0046] 4) After the paper web passes through the calender, it forms a parent roll in the roll paper section, and then rewinds and cuts it into pro...

Embodiment 3

[0049] With reference to the production method of a kind of liner paper that often adopts described in the present invention, liner paper is produced, specifically:

[0050] 1) Prepare the surface layer, core layer and bottom layer slurry according to the ratio in Table 3.

[0051] 2) The three-layer pulp is dehydrated on the forming wire part through its respective headbox to form a wet paper sheet, and then compounded on the bottom wire, and is sucked by high vacuum to make a raw cardboard with a dryness of about 22%, which is sent to the press part for further processing. press;

[0052] 3) In the previous step, the raw cardboard is mechanically dehydrated through one ordinary press and two shoe presses. After the dryness reaches more than 45%, it is dried in the drying section; the press line pressure is: the first press is 170KN / M, and the second press is 960KN / M. ;

[0053] 3) After the paper web passes through the calender, it forms a parent roll in the roll paper sec...

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Abstract

The invention belongs to the technical field of papermaking technology, and relates to a production method of liner paper. In order to solve the problems that raw wood pulp is still partially used in the production of liner paper, the production cost is high, and the negative impact on the environment is relatively large, the invention provides A production method of liner paper, comprising the step of forming the surface layer, the core layer and the bottom layer intermediate slurry and the composite paper-forming step of the surface layer, the core layer and the bottom layer intermediate slurry, the above technical solutions can effectively solve the above technical problems question.

Description

technical field [0001] The invention belongs to the technical field of papermaking technology and relates to a production method of liner paper. Background technique [0002] In recent years, with the continuous and rapid development of the express logistics industry, the demand for the packaging industry has risen. Liner paper is an important component of many paper packaging boxes and packaging boards. At present, in the production of domestic medium and high-grade facial paper, unbleached raw wood pulp is used for the surface layer, and domestic or imported waste paper is used for the core and bottom layer. The production of medium and high-grade liner paper has not been realized from all waste paper. In addition, the steam consumption in the existing production process is large. high cost. Contents of the invention [0003] The technical problem to be solved by the present invention is that raw wood pulp is still partially used in the production of liner paper, th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D21H27/10D21H11/14D21H15/10D21H17/56D21H17/66D21H17/55D21H17/68D21H17/17D21H21/10
CPCD21H27/10D21H11/14D21H15/10D21H17/17D21H17/55D21H17/56D21H17/66D21H17/68D21H17/74D21H21/10
Inventor 孙浩章爱其吕晓峰
Owner ZHEJIANG JINGXING PAPER
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