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Papermaking method and papermaking machine

A technology for paper machines and paper, applied in the direction of thin paper/absorbent paper, paper, papermaking, etc., can solve the problem of not considering the reduction of water consumption, etc., and achieve the effect of improving production efficiency, improving productivity, and reducing equipment

Active Publication Date: 2012-06-27
SUMITOMO SEIKA CHEM CO LTD
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  • Description
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  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In the following Patent Document 1, a binder for papermaking that replaces polyethylene oxide is disclosed, which improves papermaking properties such as the dispersibility of paper fibers and the texture and feel of the resulting paper, but does not consider reducing the amount of water used.

Method used

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  • Papermaking method and papermaking machine
  • Papermaking method and papermaking machine

Examples

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Embodiment 1

[0052] (papermaking method)

[0053] Paper is produced from raw material liquid slurry using the apparatus according to the above-mentioned embodiment. In this embodiment, the paper machine uses a crescent former paper machine, with a papermaking speed of 1300m / min (reel speed of 1100m / min), and a papermaking unit area weight of 13g / m 2 run under thin paper conditions. NBKP (conifer pulp) / LBKP (broadleaf pulp)=40 / 60 (weight ratio) with a beating degree of 640 mlcsf (Canadian Standard Freeness) was used as a raw material liquid slurry of 0.15% by weight as the raw material for papermaking. Use polyethylene oxide (trade name: PEO-18Z, aqueous solution viscosity: 430mPa·s (0.5%), manufactured by Sumitomo Seika Co., Ltd.) as the adhesive for papermaking. A 0.5% by weight polyethylene oxide aqueous solution was prepared using the viscous aqueous solution. The polyethylene oxide aqueous solution was added to the pipe 5 between the pump 1 and the screen 2 to make paper. The usage...

Embodiment 2

[0059] In this example, polyethylene oxide (trade name: PEO-27, manufactured by Sumitomo Seika Co., Ltd.) having a viscosity of 720 mPa·s in a 0.5% by weight aqueous solution was used. As an adhesive for papermaking. Papermaking was performed under the same conditions as in Example 1 except for the type of adhesive for papermaking. The usage-amount of the binder for papermaking was 0.11% by weight with respect to the dry weight of the paper produced|generated. Table 1 shows the results of the paper obtained in this example, the confirmed texture, and the amount of water used.

Embodiment 3

[0061] In this example, papermaking was performed under the same conditions as in Example 2 except that 0.1% by weight of polyethylene oxide was used as the binder for papermaking. The usage-amount of the binder for papermaking was 0.13% by weight with respect to the dry weight of the paper produced|generated. Table 1 shows the results of the paper obtained in this example, the confirmed texture, and the amount of water used.

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Abstract

A papermaking method conducted using a papermaking machine which includes a pump (1), a screen (2) located downstream from the pump (1), and a head box (3) disposed downstream from the screen (2). Downstream from the pump (1), an aqueous papermaking thickener solution having a concentration of 0.1-3.0 wt.% is added to a feed pulp slurry from which impurities are to be removed with the screen (2).

Description

technical field [0001] The present invention relates to a papermaking method and a papermaking machine for reducing the amount of water required for adhesives. Background technique [0002] The manufacture of paper is generally carried out through the following steps. After forming wood chips from logs, the pulp process of generating raw material liquid pulp (pulp slurry) by steaming, washing, sorting, bleaching, etc.; A papermaking process in which pulp boxes are fed to wires for dehydration, and then the resulting paper is processed by pressing and drying. [0003] Various types of paper machines such as cylinder paper machines, Fourdrinier paper machines, and short wire paper machines are known as paper machines used in paper production. When these paper machines are used to produce paper with a low basis weight, such as tissue paper and toilet paper, an adhesive for papermaking for imparting pulp dispersibility is generally used. When using adhesives for papermaking, f...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D21H23/14D21H17/53D21H21/06
CPCD21H21/06D21H27/002D21H23/14D21H17/53
Inventor 寺本真树古林慎二井户亨和田谦二
Owner SUMITOMO SEIKA CHEM CO LTD
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