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Surface sizing solution, and surface sizing solution used sized paper

A technology of surface glue and cross-linking reaction, used in papermaking, paper coatings, textiles and papermaking, etc., can solve the problems of insufficient toughness of the surface sizing layer and poor folding resistance of paper, and achieve the effect of improving folding resistance.

Active Publication Date: 2014-02-19
GOLD EAST PAPER JIANGSU
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Most of the existing surface gluing solutions use starch as the main raw material. However, the surface sizing layer made of this surface gluing solution usually has insufficient toughness and is relatively brittle, resulting in poor folding resistance of the paper.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0024] The preparation of the above-mentioned surface glue solution containing NFC, the starch gelatinization liquid prepared by adding water to 85-99.75 parts by mass of starch, 0.1-10 parts by mass of NFC, 0.15-5 parts by mass of cross-linking agent and an appropriate amount of water, Mix and react evenly to obtain the surface glue solution. The preparation of the NFC-containing surface glue solution can also add the raw materials in a certain order. Described surface glue solution is incubated standby under the condition of about 40-85 ℃.

[0025] The surface glue can be used for roller sizing with a coating machine. When sizing, the mass percentage concentration of the surface glue is controlled to be 5%-20%, the viscosity is 8-200cps, and the temperature is about 40-85°C. The gluing amount of the surface glue solution is quantitatively 0.1-5g / m2. The above-mentioned parameters of the surface glue during sizing are commonly used parameters of the surface glue.

[0026] ...

Embodiment 1

[0034] Prepare the surface glue solution: take 99.75 parts of tapioca starch, 0.1 part of NFC, and 0.15 part of crosslinking agent (glyoxal) in absolute dry mass parts respectively, add water and mix evenly to prepare the surface glue solution. The solid content of this surface glue solution is 12%.

[0035] Preparation of sized paper by coating: take a kind of unsized cultural paper with a grammage of 69g / m 2 ; Use Taketsuna TSK-71 coating machine to carry out sizing on the surface of this unsized culture paper; the amount of sizing is 1.5g / m 2 .

Embodiment 2

[0037] Prepare the surface glue solution: take 98.5 parts of tapioca starch, 0.5 part of NFC, and 1 part of cross-linking agent (glutaraldehyde) in absolute dry mass parts respectively, add water and mix evenly, and prepare the surface glue solution. The solid content of this surface glue solution is 12%.

[0038] Refer to the method steps and process parameters of Example 1 and use the surface glue solution prepared in Example 2 to carry out sizing to obtain sized paper.

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Abstract

The invention provides a surface sizing solution used in the papermaking field. The surface sizing solution contains a product and water, the product is obtained after a cross-linking reaction of nano fibrillated cellulose, starch and a cross-linking agent, the nano fibrillated cellulose is single microfibrils of cellulose having a length of 100-2000nm and a diameter of 3-200nm obtained through defibrating cellulose raw materials, wherein bone dry mass parts of the nano fibrillated cellulose, the starch and the cross-linking agent are 0.1-10, 85-99.75 and 0.15-5 respectively. The invention also provides a sized paper made by using the surface sizing solution. The surface sizing surface containing the nano fibrillated cellulose is coated on the surface of paper to realize enforcing and toughening effects in order to effectively improve the flexibility resistance of the sized paper.

Description

technical field [0001] The invention relates to a surface glue solution used in the papermaking field and sizing paper prepared by applying the surface glue solution. Background technique [0002] In the field of papermaking, in order to endow paper with some special properties, surface glue is usually coated on one or both sides of base paper and dried to form a surface sizing layer. Most of the existing surface gluing solutions use starch as the main raw material. However, the surface sizing layer made of this surface gluing solution usually has insufficient toughness and is relatively brittle, thus causing poor folding resistance of the paper. Contents of the invention [0003] In view of this, it is necessary to provide a surface glue that effectively solves the above problems. [0004] In addition, it is also necessary to provide a sized paper prepared by applying the above-mentioned surface glue solution. [0005] A surface glue solution, the surface glue solution ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D21H19/52D21H19/54D21H19/46D21H19/64
Inventor 秦昀昌封衍
Owner GOLD EAST PAPER JIANGSU
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