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Method for preparing higher-quality paper from waste compound paper source recycled paper pulp

A kind of composite paper, high technology, applied in the direction of synthetic cellulose/non-cellulose material pulp/paper, papermaking, waste product addition, etc., can solve the problems of bursting resistance, folding resistance, ring pressure, poor tearing degree, inability As a matter of preparation, etc., to achieve the effect of high overall cost

Inactive Publication Date: 2011-03-30
上海嘉龙纸业有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The production and application of waste paper source recycled pulp has a long history. With the development of society, the regeneration treatment and utilization technologies of various new waste papers are also changing rapidly. At present, from a new type of aluminum, plastic composite The so-called waste composite paper source regenerated pulp obtained from waste paper regeneration, compared with virgin pulp, its bursting strength, folding strength, ring pressure, tearing strength and other strength indicators are worse than that of virgin pulp, and it often cannot be used as Pulp for making higher quality paper
With the development of society, all kinds of paper-making resources, especially those used to make higher-quality paper, are increasingly scarce. Therefore, waste paper pulp, especially a new type of aluminum-plastic composite waste paper that is increasing day by day It is becoming more and more necessary to make paper from recycled pulp, but there is no detailed report in the literature on how to use recycled pulp from waste composite paper to produce higher-quality paper.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] A. Preparation of colloidal auxiliary material solution for spraying and impregnating the surface of striped kraft paper, take:

[0027] Starch: 5-20 parts by weight (hereinafter referred to as parts),

[0028] AKD: 1 to 4 servings,

[0029] Polyvinyl alcohol: 1 to 2 parts,

[0030] Enzyme: appropriate amount (the amount added can be controlled at 0.002% to 0.01% of the starch weight),

[0031] Water: 400~650 (parts),

[0032]

[0033] Total: 407~676 (parts),

[0034] Solid content (weight percent concentration): 1-6%;

[0035] Feed liquid pH value: 5.5~6.5.

[0036] The colloidal additive liquid material can be heated and prepared in the mixing tank next to the production site, and then the colloidal additive liquid material is guided to the sizing feeding tank of the paper machine with a pipeline.

[0037] B. Spraying and dipping construction on paper surface:

[0038] On a paper machine with a speed of 50-70m / min and ...

Embodiment 2

[0048] A. Add colloidal additives to non-drying collagen pulp:

[0049] According to the weight ratio of rosin gum / aluminum sulfate / pulp (dry basis)=0.5 / 3 / 100, add rosin gum and aluminum sulfate to the pulp batching tank, stir well and set aside.

[0050] B. Preparation of colloidal auxiliary material liquid for non-drying collagen paper surface spray impregnation, take:

[0051] Starch: 5~10 parts by weight (hereinafter referred to as parts),

[0052] Carboxylated styrene-butadiene latex: 1 to 2 parts,

[0053] Enzyme: appropriate amount (the amount added can be controlled at 0.002% to 0.01% of the starch weight),

[0054] Water: 400~650 (parts),

[0055]

[0056] Total: 406~662 (parts),

[0057] Solid content (weight percent concentration): 1 to 6%,

[0058] Feed liquid pH value: 6.5~7.

[0059] The colloidal additive liquid material can be heated and prepared in the mixing tank next to the production site, and then the colloidal ad...

Embodiment 3

[0071] A. Colloidal auxiliary material liquid preparation for coating or laminating the base paper surface sprayed and impregnated with:

[0072] 6-12 parts by weight of borax (hereinafter referred to as parts), add water to 600 parts for later use, and obtain an aqueous solution with a weight percentage of 1%-2% of borax.

[0073] B. Colloidal auxiliary material liquid preparation for spraying and impregnating the base paper surface of laminating and laminating, take:

[0074] Starch: 5-10 parts,

[0075] Ammonium persulfate: appropriate amount (1%-3% as starch weight),

[0076] AKD: 0.5~1.0 parts

[0077] Polyvinyl alcohol: 1 part,

[0078] Water: 400~650 (parts),

[0079]

[0080] Total: 406~661 (parts),

[0081] Solid content (weight percent concentration): 1 to 6%,

[0082] Feed liquid pH value: 6.5~7.

[0083] The colloidal additive liquid material can be heated and prepared in the mixing tank next to the production site, and then the ...

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Abstract

The invention discloses a method for preparing higher-quality paper from waste compound paper source recycled paper pulp. The higher-quality paper is prepared by the following steps of: preparing waste compound paper source recycled paper pulp or / and sizing agent doped with polyvinyl alcohol fiber into paper; directly impregnating the paper on a paper machine into a colloid addition agent; and drying the mixture on the paper machine by a drying cylinder; or / and adding the colloid addition agent in a waste compound paper source recycled paper pulp blending tank in advance before making paper. The higher-quality paper is characterized by comprising the parameters that the burst index (kPa.m<2> / g) is more than 2.2, the tensile index (N.m / g) is more than 20, the tear index (mN.m<2> / g) is more than 4.0, the Cobb value [(60s)m<2> / g] is less than 30 and the fixed quantity (m<2> / g) is 30-100; and the varieties of the higher-quality paper comprise kraft paper, wrapping paper, non-setting adhesive base paper, glazed paper and base paper for laminating.

Description

technical field [0001] The invention belongs to the technical field of papermaking, and relates to a method for preparing high-quality paper by using regenerated pulp of waste composite paper sources. Background technique [0002] The production and application of waste paper source recycled pulp has a long history. With the development of society, the regeneration treatment and utilization technologies of various new waste papers are also changing rapidly. At present, from a new type of aluminum, plastic composite The so-called waste composite paper source regenerated pulp obtained from waste paper regeneration, compared with virgin pulp, its bursting strength, folding strength, ring pressure, tearing strength and other strength indicators are worse than that of virgin pulp, and it often cannot be used as Pulp for making higher quality paper. With the development of society, all kinds of paper-making resources, especially those used to make higher-quality paper, are increa...

Claims

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Application Information

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IPC IPC(8): D21H17/01D21H13/16D21H21/14
Inventor 吴丹国胡永明梁思慧
Owner 上海嘉龙纸业有限公司
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