Paper pulp made from bamboo fiber, preparation method thereof, and paper product made from paper pulp

A bamboo fiber and pulp technology, which is applied to pulping of cellulose raw materials, pulping with inorganic alkalis, and fiber raw material treatment, etc. Affect the environmental ecological balance and other issues to avoid possible harm to the human body, eliminate residual pollution, and maintain the effect of natural color

Active Publication Date: 2014-11-12
SICHUAN HUANLONG NEW MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] There are many disadvantages in the cultural paper and household paper of the prior art, mostly using native wood pulp, which seriously affects the ecological balance of the environment and leads to long-term adverse consequences due to the need to cut down a large amount of wood; part of the cultural paper prepared from native wood pulp The tensile strength, softness, and water absorption of the paper do not meet the specified standards; and in the prior art, in order to increase the whiteness of the paper, European-style pulping is produced using bleached pulp as raw materials in the pulping process, and the bleaching pulp used for bleaching is There are mainly

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Example 1: The preparation of bamboo fiber pulp includes the following steps:

[0029] S1. Raw material disintegration: select moso bamboo, yellow bamboo and azurite as raw materials, and dry disintegrate the raw materials into fiber powder with a length of 2cm;

[0030] S2. Cooking: Soak the fiber powder with the cooking liquid, the soaking time is 50min, the temperature of the soaking liquid is 85℃, and the fiber powder and the cooking liquid are mixed evenly at a material-to-liquid ratio of 1:2.5 and then added to the intermittent star steamer , Heated with steam to 120°C, heated, small outgassed, and kept for 60 minutes to obtain a high hardness slurry with a hardness of 70 potassium permanganate; the cooking liquor is 10% KOH;

[0031] S3. Decomposing: The above-mentioned high-hardness pulp is sent to the high-consistency refiner for decomposing, and the decomposing time is 25min;

[0032] S4. Refining: Dilute the decomposed bamboo pulp with dilute black liquor to a co...

Embodiment 2

[0034] Example 2: The preparation of bamboo fiber pulp includes the following steps:

[0035] S1. Raw material disintegration: select water bamboo and white octopus fibers as raw materials, and dry disintegrate the raw materials into fiber powder with a length of 4cm;

[0036] S2. Cooking: Mix the fiber powder and cooking liquid evenly according to the material-to-liquid ratio of 1:4, and then continue the digester, pass in steam and heat up to 135℃, increase the temperature, small outgassing, keep for 80 minutes, and obtain the hardness of potassium permanganate. A high-hardness pulp with a value of 90; wherein the cooking liquor is 17% KOH;

[0037] S3. Decomposing: The above-mentioned high-hardness pulp is sent to the high-consistency refiner for decomposing, and the decomposing time is 35min;

[0038] S4. Refining: Dilute the decomposed bamboo pulp with dilute black liquor to a concentration of 10%, and refine the diluted slurry to obtain a slurry with a beating degree of 20°SR; ...

Embodiment 3

[0040] Example 3: The preparation of bamboo fiber pulp includes the following steps:

[0041] S1. Raw material disintegration: select Westwind bamboo fiber as raw material, and dry disintegrate the raw material into fiber powder with a length of 3cm;

[0042] S2. Steaming: soak the fiber powder with cooking liquid, the soaking time is 70min, the temperature of the soaking liquid is 90℃, the fiber powder is put into the cooking pot from the hot black liquor through the pot loader, and closed when the pot is full Cover the pot, add the cooking liquid to the cooking pot at a temperature of 100℃, and at the same time exhaust the air in the pot and increase the pressure to 0.2MPa. The cooking liquid is heated to 125℃, heat up, keep warm and replace for 70min, and finally send the slurry to Spray the pot to obtain a high-hardness pulp with a hardness of 80 permanganate; wherein the cooking liquid is 13% KOH, and the amount of fiber powder and cooking liquid is 1:3;

[0043] S3. Decomposi...

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Abstract

The invention discloses paper pulp made from bamboo fiber, a preparation method of the paper pulp, and a paper product made from the paper pulp and belongs to the field of pulp making and papermaking technology. The whiteness of the paper pulp made from bamboo fiber ranges from 20% to 40% ISO, the tensile index is larger than or equal to 7.9 N*m/g, the folding strength ranges from 15 times to 200 times, the fracture length ranges from 5 km to 10 km, the ash content is smaller than or equal to 1%, the tearing strength ranges from 200 mN to 650 mN, and the beating degree ranges from 10 degree SR to 25 degree SR. The preparation method of the paper pulp made from bamboo fiber includes the steps of raw material breaking, stewing, defibering, defibrination, screening and washing. The paper pulp made from bamboo fiber can be used for making culture paper or paper for daily use. The paper pulp has a good performance parameter, can replace conventional wood pulp and is superior to the conventional wood pulp; the preparation method of the paper pulp has the advantages of being high in yield, easy to operate, convenient to produce, low in cost and environmentally friendly, and the 100% natural features of bamboo fiber are kept.

Description

technical field [0001] The invention belongs to the technical field of pulping and papermaking, and in particular relates to pulp prepared from bamboo fibers, a preparation method thereof and a paper product prepared therefrom. Background technique [0002] Due to the increasing shortage of wood resources in the world, it has become the goal pursued by various paper-making enterprises to produce pulp and paper without destroying forests and the environment. As a solution to this problem, the technology of making pulp from non-wood plant fibers using annual or biennial plants such as: farmland waste, bamboo, sugarcane stalks discarded after sugar production, rice and wheat straw, etc. as the main material has been attracting attention. [0003] Usually cultural paper refers to printing paper, also known as offset paper, or the abbreviation of lightweight coated paper, generally between 60 grams and 120 grams, less than 60 grams is writing paper, and more than 120 grams are co...

Claims

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Application Information

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IPC IPC(8): D21C5/00D21C3/22
CPCD21B1/06D21C3/02D21C5/00D21C9/02D21H11/02D21H11/12
Inventor 沈根莲周骏朱清云范武毅
Owner SICHUAN HUANLONG NEW MATERIAL
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