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Production method of low-basis-weight environment-friendly high-strength kraft face liner board

A production method and an environment-friendly technology, which is applied in the field of papermaking, can solve problems such as affecting the strength of paper, difficulty in meeting the packaging needs of high-end products, and excessive cutting of short fibers, so as to improve the strength of paper, highlight environmental advantages and cost advantages, and increase The effect of hydrogen bonding

Active Publication Date: 2014-10-15
ZHEJIANG RONGSHENG PAPER IND HLDG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, the high-grade kraft linerboard on the market usually uses unbleached pulp vermicelli to ensure the strength of the paper, and some low-end products are produced with waste paper in order to reduce production costs. A certain degree of degradation, the paper strength is low, it is difficult to meet the packaging needs of high-end products
[0003] In addition, due to the complex sources of waste paper, the types of fibers and bleaching methods are often different, resulting in large differences in fiber properties, especially in fiber length, and may contain stickies that affect paper quality. Machine production and product quality impurities, the existing kraft liner board pulping production line is usually equipped with screening equipment to screen waste paper fibers to remove these impurities, but seldom set grading screen, so long and short fibers are mixed together Beating, there is a problem of uneven beating, which causes excessive cutting of short fibers, thus affecting the strength of paper

Method used

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  • Production method of low-basis-weight environment-friendly high-strength kraft face liner board

Examples

Experimental program
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Effect test

Embodiment 1

[0024] A method for producing low-quantity environmentally-friendly high-strength cowhide noodle box cardboard includes the following steps:

[0025] (1) The waste paper is fed into the pulper and crushed at a rotor speed of 600 rpm to form a slurry with a concentration of 8-10%. The slurry is a mixture of fibers, impurities and water. Good slurry (usable slurry ) Enter the fiber separator through the sieve plate at the bottom of the pulper;

[0026] (2) The slurry of the hydraulic pulper enters the impurity separator, and the good slurry and waste residue are separated again at the rotor speed of 300 rpm and the separation amount is 15-20%, and the good slurry is returned to the pulper for recovery Utilize, discharge and discard the waste residue;

[0027] (3) The good pulp is sent to the fiber separator to separate fibers and impurities again, the separated coarse pulp is sent back to the pulper, and the separated fine pulp is passed through a sieve to separate long fibers and sho...

Embodiment 2

[0030] A method for producing low-quantity environmentally-friendly high-strength cowhide noodle box cardboard includes the following steps:

[0031] (1) The waste paper is fed into the pulper and crushed at a rotor speed of 500 revolutions / min to form a slurry with a concentration of 8-10%. The slurry is a mixture of fibers, impurities and water. Good slurry (usable slurry ) Enter the fiber separator through the sieve plate at the bottom of the pulper;

[0032] (2) The slag slurry of the hydraulic pulper enters the impurity separator, and the good slurry and waste residue are separated again at the rotor speed of 400 rpm and the separation amount is 15-20%, and the good slurry is returned to the pulper for recovery Utilize, discharge and discard the waste residue;

[0033] (3) The good pulp is sent to the fiber separator to separate fibers and impurities again, the separated coarse pulp is sent back to the pulper, and the separated fine pulp is passed through a sieve to separate lo...

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Abstract

The invention provides a production method of a low-basis-weight environment-friendly high-strength kraft face liner board. Long and short fibers in waste paper fibers are separated to be subjected to beating processing separately, and the short fibers are further subjected to laccase treatment, so that the paper forming strength is enhanced. According to the invention, the traditional kraft face liner board pulping production line is subjected to technical transformation to realize the separate beating control of the long and short fibers, and the short fibers are further subjected to laccase treatment to further improve the hydrogen bonding of the short fibers, so that the remarkable effect on the improvement of the paper forming strength of paper products is achieved, and further, the fact that the kraft face liner board is produced by totally adopting waste paper is realized; through the adoption of the method, the production of the low-basis-weight environment-friendly high-strength kraft face liner board can be implemented, and the product has prominent environmental protection advantage and cost advantage as totally adopting waste paper.

Description

Technical field [0001] The invention belongs to the technical field of papermaking, and in particular relates to a method for producing low-quantity environmentally-friendly high-strength cowhide noodle box cardboard. Background technique [0002] At present, the high-grade kraft boxboard paper on the market usually uses unbleached pulp noodles in order to ensure the strength of the paper, and there are also medium and low-grade products that use waste paper to reduce production costs. However, the performance of the waste paper fiber has undergone one or more uses. Due to a certain degree of degradation, the strength of the finished paper is low, and it is difficult to meet the packaging needs of high-end products. [0003] In addition, due to the complex source of waste paper, the types of fibers and bleaching methods are different, which brings about large differences in fiber properties, especially in fiber length, and may contain stickies. Machine production and product quali...

Claims

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Application Information

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IPC IPC(8): D21C3/22D21B1/32D21B1/34D21D5/00
CPCY02W30/64
Inventor 陆祥根陈华赵会芳沙力争蔡卯娜
Owner ZHEJIANG RONGSHENG PAPER IND HLDG
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