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Method of improving performance of recycled paper pulp

A technology of recycled pulp and performance, applied in pulp bleaching, non-woody plant/crop pulp, papermaking, etc., can solve the problems that waste paper is not suitable for refining, cannot be combined, and has high paper strength, so as to improve the reuse rate and improve the Bursting index, the effect of improving tensile index

Pending Publication Date: 2017-11-17
HEFEI LONGFA PACKING CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the actual reuse of recycled pulp, refining can enhance the strength of paper. However, waste paper is not suitable for refining, because the fibers in waste paper are very fragile. The fibers will be directly ground into powder and cannot be combined, which exposes many problems with the strength of the paper

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] A method to improve the performance of recycled pulp, using waste corrugated paper as the main raw pulp, accounting for 70% of the recycled pulp, and the rest is mixed recycled pulp of other materials, and adding 1.0% of nanocellulose fiber organic pulp, the preparation method of this organic pulp may further comprise the steps:

[0018] (1) Prepare the following raw materials in parts by weight: 60 parts of flax straw, 50 parts of sorghum straw, 45 parts of corn straw, 30 parts of soybean straw, and 20 parts of Kochia scoparia straw. Soak in % sodium bicarbonate for 2 hours;

[0019] (2) Take out the soaked stalks and put them in a cooking tank for heating. Add 50% water, 10% ethanol and 0.01% cooking aid to the cooking tank. Cook at ℃ for 60 minutes, after cooking, stir at residual temperature until cooled to normal temperature;

[0020] (3) Put the cooled cooking pulp into the refiner, add 1% inorganic filler by mass fraction, refine pulp at a speed of 5000 rpm, an...

Embodiment 2

[0026] A method to improve the performance of recycled pulp, using waste corrugated paper as the main raw pulp, accounting for 75% of the recycled pulp, and the rest is mixed recycled pulp of other materials, and adding 1.2% of nanocellulose fiber organically to the recycled pulp pulp, the preparation method of this organic pulp may further comprise the steps:

[0027] (1) Prepare the following raw materials in parts by weight: 63 parts of flax straw, 55 parts of sorghum straw, 50 parts of corn straw, 33 parts of soybean straw, and 23 parts of Kochia scoparia straw. % sodium bicarbonate for 2.5 hours;

[0028] (2) Take out the soaked straw and heat it in a cooking tank. Add 55% water, 15% ethanol and 0.015% cooking aid to the cooking tank. Cook at ℃ for 65 minutes, after cooking, stir at residual temperature until cooled to normal temperature;

[0029] (3) Put the cooled cooking slurry into the refiner, add 1.5% inorganic filler by mass fraction, refine at a speed of 5200 rp...

Embodiment 3

[0035] A method to improve the performance of recycled pulp, using waste corrugated paper as the main raw pulp, accounting for 80% of the recycled pulp, the rest is mixed recycled pulp of other materials, and adding 1.5% of nano-cellulose fiber organically to the recycled pulp pulp, the preparation method of this organic pulp may further comprise the steps:

[0036] (1) Prepare the following raw materials in parts by weight: 65 parts of flax straw, 60 parts of sorghum straw, 55 parts of corn straw, 35 parts of soybean straw, and 25 parts of Kochia scoparia straw. Soak in % sodium bicarbonate for 3 hours;

[0037] (2) Take out the soaked stalks and put them in a cooking tank for heating. Add 60% water, 20% ethanol and 0.02% cooking aid to the cooking tank. Cook at ℃ for 70 minutes, after cooking, stir at residual temperature until cooled to normal temperature;

[0038] (3) Put the cooled cooking pulp into the refiner, add 2% inorganic filler by mass fraction, refine pulp at a...

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Abstract

The invention relates to the technical field of wrapping paper processing, and discloses a method of improving the performance of recycled paper pulp. Waste and old corrugated paper is taken as the main raw pulp accounting for 70 to 80% of recycled paper pulp; the residue is mixed recycled paper pulp of other materials; 1.0 to 1.5 wt% of nano cellulose fibrous organic pulp is added into the recycled paper pulp, cellulose rich in crop straws is used to prepare nano fiber filaments, the tensile index and burst index are increased, the performance of paper prepared from waste paper pulp is improved, and the utilization rate of waste and old resources is increased.

Description

technical field [0001] The invention belongs to the technical field of packaging paper processing, and in particular relates to a method for improving the performance of recycled pulp. Background technique [0002] my country is rich in non-wood resources, but due to serious environmental pollution, high energy consumption, unsmooth industrial chain, and tight supply of raw materials due to the traditional pulping and papermaking production process of non-wood fiber raw materials, its proportion has declined. In order to meet market demand, my country's wood pulp imports have increased year by year. [0003] With the rapid growth of the national economy and the improvement of people's living standards, the packaging industry has also developed by leaps and bounds. High-strength corrugated paper is an important packaging material, including the packaging of ordinary goods, making corrugated cartons and cartons. It is light, firm, and protects goods. It is easy to load, unloa...

Claims

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Application Information

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IPC IPC(8): D21H15/10D21H11/12D21H11/14D21C1/06D21C3/02D21C9/12D21H17/68D21H27/10
CPCD21H15/10D21C1/06D21C3/022D21C9/12D21H11/12D21H11/14D21H17/68D21H27/10
Inventor 林悦敏
Owner HEFEI LONGFA PACKING CO LTD
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