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Special paper with low wet expansion rate and high restorability and preparation method thereof

A restorative and formulated technology, applied in the field of papermaking, can solve problems such as bubbles, wrinkles and other deformed shapes that cannot be improved, wallpaper surface flatness, poor appearance, and failure to return to a flat shape, etc., to improve crosslinking stability , Improve the wet expansion deformation rate, improve the recovery effect

Inactive Publication Date: 2020-11-27
泰中特种纸有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Although the dimensional stability of the paper has been improved, due to the expansion and deformation of the paper, blisters and wrinkles usually occur in local areas. The shape cannot be restored to the original flat shape, or the deformed shape such as blisters and wrinkles cannot be improved, making the flatness and aesthetics of the wallpaper surface worse

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] The paper includes wood pulp fiber 60, mineral filler 3, wetting agent 3 and defoamer 2 in parts by mass, and is characterized in that it also includes aminosilane 5 and amylose 5.

[0016] Wood pulp fibers include coniferous pulp and hardwood pulp, and the mass ratio of coniferous pulp to hardwood pulp is 50:50.

[0017] The aminosilane is γ-aminopropyltrimethoxysilane.

[0018] The preparation method is as follows: according to the above formula, take wood pulp fiber, mineral filler, wetting agent, defoamer, aminosilane, and amylose and add them to a pulper for pulping, then refine the pulp, and go through papermaking, netting, pressing, and drying , calendering, rolling, cutting and packaging.

Embodiment 2

[0020] The paper includes wood pulp fiber 70, mineral filler 4, wetting agent 4 and defoamer 4 in parts by mass, and is characterized in that it also includes aminosilane 8 and amylose 8.

[0021] Wood pulp fibers include coniferous pulp and hardwood pulp, and the mass ratio of coniferous pulp to hardwood pulp is 40:60.

[0022] The aminosilane is γ-aminopropyltriethoxysilane.

[0023] The preparation method is as follows: according to the above formula, take wood pulp fiber, mineral filler, wetting agent, defoamer, aminosilane, and amylose and add them to a pulper for pulping, then refine the pulp, and go through papermaking, netting, pressing, and drying , calendering, rolling, cutting and packaging.

Embodiment 3

[0025] The paper includes wood pulp fiber 80, mineral filler 5, wetting agent 5 and defoamer 5 in parts by mass, and is characterized in that it also includes aminosilane 10 and amylose 10.

[0026] Wood pulp fibers include coniferous pulp and hardwood pulp, and the mass ratio of coniferous pulp to hardwood pulp is 60:40.

[0027] The aminosilane is N-β(aminoethyl)-γ-aminopropyltrimethoxysilane.

[0028] The preparation method is as follows: according to the above formula, take wood pulp fiber, mineral filler, wetting agent, defoamer, aminosilane, and amylose and add them to a pulper for pulping, then refine the pulp, and go through papermaking, netting, pressing, and drying , calendering, rolling, cutting and packaging.

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PUM

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Abstract

The invention relates to paper with excellent dimensional stability and restorability and a preparation method thereof. The paper is prepared from 60-80 parts of wood pulp fiber, 3-5 parts of mineralfiller, 3-5 parts of a wetting agent and 2-5 parts of a defoaming agent and is characterized by further comprising 5-10 parts of aminosilane and 5-10 parts of amylose. By adding aminosilane and amylose into paper pulp, certain micro-elasticity can be given to paper in the X direction and the Y direction of the plane where the paper is located, the micro-elasticity can be converted into local tensile stress, fibers tending to be expanded and deformed are pulled together, the deformation amount of the fibers is reduced, and the wet expansion deformation rate of the paper is increased. When the paper is dried again, due to the fact that the driving force of fiber dehydration and expansion deformation is weakened, local tensile stress in the paper can continue to draw the fibers together, andthe paper tends to restore to the shape before the paper is wetted. That is to say, the micro-elasticity can relieve the bubbling and wrinkling shapes of the paper due to expansion deformation, and the restorability of the paper is improved.

Description

technical field [0001] The invention relates to special paper with low moisture expansion rate and high recovery and a preparation method thereof, which belongs to the field of papermaking and can be applied to wallpaper. Background technique [0002] The main component of paper is cellulose, which will swell and deform when it meets water, which makes paper easy to swell and deform when it meets water or in a humid environment. For wallpaper, it is generally not expected to expand and deform when exposed to water or in a humid environment, that is, for paper applied to wallpaper, it is usually required to have a low moisture expansion rate. [0003] In the prior art, in order to avoid expansion and deformation of paper in a wet environment, a waterproof layer, such as a PVC waterproof layer, is usually provided on the wallpaper to avoid expansion and deformation by means of physical isolation. However, this method will increase redundant processes, be complicated and cumbe...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D21H27/20D21B1/34D21D1/20D21F11/00D21H21/12D21H17/28D21H17/13
CPCD21B1/345D21D1/20D21F11/00D21H17/13D21H17/28D21H21/12D21H27/20
Inventor 韩旭霞延海平
Owner 泰中特种纸有限公司
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