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Preparation method of high-strength corrugated raw paper

A corrugated base paper, high-strength technology, applied in the field of papermaking, can solve the problems of immature production technology, inability to provide low shrinkage and paper strength products, etc.

Active Publication Date: 2020-01-17
DONGGUAN NINE DRAGONS PAPER IND
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  • Claims
  • Application Information

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Problems solved by technology

However, domestic secondary fiber corrugated base paper manufacturers mainly using waste paper raw materials are unable to provide products with low shrinkage, good paper strength and stable performance to packaging and printing companies due to immature production technology, which causes packaging and printing companies There are fewer corrugated base paper products with low shrinkage and good strength (breaking length) in demand

Method used

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  • Preparation method of high-strength corrugated raw paper
  • Preparation method of high-strength corrugated raw paper
  • Preparation method of high-strength corrugated raw paper

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preparation example Construction

[0031] The invention provides a method for preparing high-strength corrugated base paper, comprising: S1) mixing 30-50 parts by weight of national waste paper, 10-30 parts by weight of Japanese OCC waste paper, and 40-60 parts by weight of European waste OCC and / or British OCC waste paper mixed pulping to obtain OCC waste paper mixed pulp; the national waste paper is grade A and / or B; S2) mixing the OCC waste paper mixed pulp with broke pulp, After slag removal, papermaking and sizing are carried out to obtain high-strength corrugated base paper; the mass ratio of the mixed OCC waste paper to broke pulp is (80-90): (10-20).

[0032] see figure 1 , figure 1 It is a schematic diagram of the preparation process of the high-strength corrugated base paper provided by the present invention.

[0033] Mixing 30-50 parts by weight of national waste paper, 10-30 parts by weight of Japanese OCC waste paper and 40-60 parts by weight of European OCC waste and / or British OCC waste paper...

Embodiment 1

[0062] 50 parts by weight of national waste paper, 10 parts by weight of Japanese OCC waste paper and 40 parts by weight of European waste OCC and / or British OCC waste paper are mixed in a drum pulper for disintegration to obtain pulp, pulp The mass concentration of the material is 3.5%.

[0063] The slurry is subjected to impurity removal by a high-concentration slag remover, and the slurry inlet concentration of the high-concentration slag remover is 3.5%; the slurry inlet pressure is 3.8bar; the inlet slurry flow rate is 10400L / min; the temperature of the slurry is 60°C ; The pH value of the slurry is 8; the pressure difference between the inlet and outlet of the high-concentration slag remover is 1.2bar;2 The removal rate of impurities and dust in the size range is 45%. Then, after a coarse sieve and a combi sieve, the KS200 / 15 heavy slag remover and the first-stage heavy slag remover (the first-stage heavy slag remover The slurry inlet concentration in the device is 1.5%;...

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Abstract

The invention provides a preparation method of high-strength corrugated raw paper. The method comprises the following steps of mixing 30-50 parts by weight of domestic waste general cargo paper, 10-30parts by weight of Japanese OCC waste paper and 40-60 parts by weight of European waste OCC and / or British OCC waste paper for pulping to obtain OCC waste paper mixed pulp, wherein the domestic wastegeneral cargo paper is domestic waste general cargo A level and / or B level; mixing the OCC waste paper mixed pulp with the waste paper pulp, removing slag, and then performing papermaking and sizingto obtain high-strength corrugated raw paper, wherein the mass ratio of the OCC waste paper mixed pulp to the damaged paper pulp is (80-90): (10-20). Compared with the prior art, the Japanese OCC waste paper, the European OCC waste paper and the British OCC waste paper are used as raw materials, the waste paper is paper produced by raw wood pulp, the fiber length and the strength are reserved, thefiber impurity cells and the impurity content in the waste paper pulp are less, the contraction of the fiber paper is favorably avoided, and the bonding strength of the paper is improved.

Description

technical field [0001] The invention belongs to the technical field of papermaking, in particular to a method for preparing high-strength corrugated base paper. Background technique [0002] Corrugated base paper is one of the important constituent materials for the production of corrugated cardboard. Corrugated base paper requires good fiber bonding strength, smooth paper surface, good tightness and stiffness, and requires a certain degree of elasticity to ensure that the made carton has shock resistance and pressure resistance. [0003] In the current paper industry, most enterprises use secondary fibers to produce corrugated base paper, which not only has low raw material and production costs, but also is environmentally friendly. However, domestic secondary fiber corrugated base paper manufacturers mainly using waste paper raw materials are unable to provide products with low shrinkage, good paper strength and stable performance to packaging and printing companies due t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D21H11/14D21C5/02D21F11/00D21C9/18D21H23/56
CPCD21H11/14D21C5/02D21C5/025D21F11/00D21C9/18D21H23/56Y02W30/64
Inventor 张成飞张益安颜利兵宋林林刘祥星
Owner DONGGUAN NINE DRAGONS PAPER IND
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