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Ultra-thin high-coverage impregnated base paper and its preparation method

A high-coverage, ultra-thin technology, applied in papermaking, paper machines, textiles and papermaking, etc., can solve the problems of reducing base paper basis weight, poor base paper strength, easy paper breakage, and large base paper basis weight, so as to reduce raw material costs and reduce strength. Deformation, high output rate effect

Active Publication Date: 2016-10-19
ZIBO OU MU SPECIAL PAPER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The thicker the decorative base paper, the greater its grammage, that is, the larger the basis weight of the base paper, and correspondingly more pulp needs to be consumed, which increases the production cost
If the basis weight of the base paper is reduced, the grammage per unit area of ​​the base paper will be reduced; although the cost can be reduced, it will also cause poor covering of the decorative base paper
In the prior art, the ration of the base paper of the decorative base paper is relatively large, resulting in a large amount of pulp and high production costs
At present, in order to ensure higher strength and higher hiding power of decorative base paper, there is generally a problem of excessive base paper basis weight. The base paper basis weight of existing decorative base paper is relatively large, and the existing ones are 90~130g / m 2
And in the field of decorative paper, the existing decorative base paper will not only reduce the basis weight of the base paper, but also have a negative impact on the strength of the base paper; the decorative base paper with low base paper strength, after the purchase of the downstream processing enterprises of the base paper, it will be impregnated and glued to make it for decoration. Paper is prone to problems of glue leakage or bottom penetration during use, and the base paper strength of the decorative paper made is poor and easy to break, causing economic losses to the downstream processing enterprises of the base paper

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Examples

Experimental program
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Effect test

Embodiment 1

[0029]Embodiments 1 to 5 are specific embodiments of the ultra-thin high-coverage impregnated base paper of the present invention and its preparation method, wherein embodiment 1 is the best embodiment.

[0030] Table 1 The composition of the components of Examples 1 to 5 (by weight)

[0031]

[0032] Example 1

[0033] 1) Put the bleached coniferous pulp and bleached hardwood pulp into the pulper equipped with 36°C pulping water to fully disintegrate, and control the beating degree to 32°SR and 36°SR respectively, and the mass concentration reaches 4.5% Afterwards, it is pumped into the crushing tank for standby;

[0034] 2) Dilute the mineral filler with water to a mass concentration of 65%, add pigment, and then fully stir with a high-speed mixer at a speed of 3000 rpm to disperse the mineral filler and pigment evenly, and finally pump it into the crushing tank of step 1) Mix evenly with the product obtained in step 1) to obtain a mixed slurry;

[0035] 3) After the p...

Embodiment 2

[0038] 1) Put the bleached coniferous pulp and bleached hardwood pulp into the pulper equipped with 40°C pulping water to fully disintegrate, and control the degree of beating to 31°SR and 38°SR respectively, and the mass concentration reaches 4.5%. Afterwards, it is pumped into the crushing tank for standby;

[0039] 2) Dilute the mineral filler with water to a mass concentration of 70%, add pigment, and then fully stir with a high-speed mixer at a speed of 3000 rpm to disperse the mineral filler and pigment evenly, and finally pump it into the crushing tank of step 1) Mix evenly with the product obtained in step 1) to obtain a mixed slurry;

[0040] 3) After the pulp mixed in step 2) passes through the fiber disintegrator to defiberize the fiber, it is refined by a double disc mill beater to cut and separate the fiber; the refined pulp is poured into the filling tank for Add filling, add wet strength agent, retention aid and defoamer in proportion in turn, and finally adjus...

Embodiment 3

[0043] 1) Put the bleached coniferous pulp and bleached hardwood pulp into the pulper equipped with pulping water at 45°C to fully disintegrate, and control the degree of beating to 32°SR and 36°SR respectively, and the mass concentration reaches 4.5%. Afterwards, it is pumped into the crushing tank for standby;

[0044] 2) Dilute the mineral filler with water to a mass concentration of 75%, add pigment, and then fully stir with a high-speed mixer at a speed of 3000 rpm to disperse the mineral filler and pigment evenly, and finally pump it into the crushing tank of step 1) Mix evenly with the product obtained in step 1) to obtain a mixed slurry;

[0045] 3) After the pulp mixed in step 2) passes through the fiber disintegrator to defiberize the fiber, it is refined by a double disc mill beater to cut and separate the fiber; the refined pulp is poured into the filling tank for Add filling, add wet strength agent, retention aid and defoamer in proportion in turn, and finally ad...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Abstract

The invention provides ultra-thin high-coverage raw impregnated paper and a preparation method thereof, and belongs to the technical field of decorative raw paper preparation. The paper is prepared from the following components in parts by weight: 20-26 parts of bleached needle pulp, 40-52 parts of bleached broad leaf pulp, 25-45 parts of mineral filler, 5-10 parts of pigment, 1.0-3.0 parts of a wet strength agent, 0.5-1.0 part of retention aid and 0.3-0.7 part of a defoaming agent. The preparation method comprises the following steps: repulping, mixing pulp, grinding, and carrying out interweaving, squeezing, dehydrating and baking by adopting a multi-cylinder long mesh paper machine; wetting by a humidifier, pressing and polishing by a soft calendaring machine, rolling paper, cutting, and packaging. According to the raw paper, on the premise of guaranteeing the coverage and strength of raw paper, the ration of raw paper can be reduced, the paper yield can be increased, the glue absorption amount can be reduced, and the production cost can be reduced. The preparation method is simple and feasible.

Description

technical field [0001] The ultra-thin high-coverage impregnated base paper and its preparation method belong to the technical field of decorative base paper preparation. Background technique [0002] Decorative material paper is obtained from decorative base paper through gluing, impregnation or printing by downstream processing enterprises, and can be used as lampshade lining and wallpaper. Base paper weight is the mass of paper or cardboard per square meter, recorded as g / ㎡, commonly known as "gram weight". The base paper with the same area but the smaller base paper basis weight, the thinner its thickness. [0003] Decorative base paper has higher requirements for hiding. In the prior art, in order to improve the covering performance of the decorative base paper, it is necessary to increase the thickness of the decorative base paper. The thicker the decorative base paper, the greater its grammage, that is, the larger the basis weight of the base paper, and correspondin...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D21H15/10D21H17/67D21H17/68D21H21/20D21H21/10D21H21/12D21H21/14D21F11/00
Inventor 李安东朱洪升王镭邢珊珊
Owner ZIBO OU MU SPECIAL PAPER
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