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Natural color bamboo pulp production method and natural color paper for daily use produced through same

A technology of natural-color bamboo pulp and household paper, applied in the field of pulp and papermaking, can solve problems such as the retention of color tone not reaching the ideal target, the deterioration of the operating environment at the production site, and the decrease of the Baume degree of the evaporated black liquor, so as to achieve the retention of the original taste of bamboo Good, avoid delignification, natural, soft and pure color tone

Inactive Publication Date: 2016-06-15
SICHUAN YONGFENG PAPER MAKING JOINT STOCK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the technology of developing bamboo pulp in China, application number 201410121975.X, is a preparation method of natural bamboo pulp fiber household paper, which uses cooking and oxygen delignification to prepare natural bamboo pulp household paper, which saves bleaching and avoids The use of chlorine and other bleaching agents improves the safety of the product, but it is found from the final product that the color retention has not reached the ideal goal, and it is off-white, which does not give consumers a strong sense of visual pleasure.
Application No. 201410355005.6 A kind of pulp prepared from bamboo fiber, its preparation method and the paper products made of it, adopting the process of first thinning and then screening and washing pulp, and using a lower cooking temperature at the same time, the investigation of pulp color has obtained better results Retained, but the operating environment of the production site deteriorates, the pulp washing effect decreases, the Baume degree of the evaporated black liquor decreases, and the alkali recovery load increases, which is not conducive to the improvement of production efficiency
Therefore, the current natural color bamboo pulp preparation technology has deficiencies in clean production, high-efficiency and low-energy production

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] Embodiment 1: the preparation of natural color bamboo pulp, it may further comprise the steps:

[0037] (1) Material selection: Cizhu is used as the raw material, and the water content is 30-40%.

[0038] (2) Raw material preparation: Cut the original bamboo into 20-50mm long and 10-20mm wide bamboo slices, with a pass rate of 90%.

[0039] (3) Washing material: The cut bamboo slices are washed by a washing machine to remove most of the impurities on the surface of the bamboo slices.

[0040](4) Cooking: use vertical pot sulfate DDS for cooking, the cooking liquid is a mixture of sodium hydroxide and sodium sulfide, the total alkali consumption is 13%, sodium sulfide accounts for 10%, the maximum temperature is 145°C, and the cooking H-factor is controlled at 150 , the Kappa value of coarse pulp was 23, the brightness was 28%, the L value was 74, the a value was 4.23, and the b value was 19.2.

[0041] (5) Screening: After cooking, the slurry is passed through a combi...

Embodiment 2

[0046] Embodiment 2: the preparation of natural color bamboo pulp, it may further comprise the steps:

[0047] (1) Material selection: Mian bamboo is used as raw material, and the water content is 40-50%.

[0048] (2) Raw material preparation: Cut the original bamboo into 20-50mm long and 10-20mm wide pieces, with a pass rate of 91%.

[0049] (3) Washing material: The cut bamboo slices are washed by a washing machine to remove most of the impurities on the surface of the bamboo slices.

[0050] (4) Cooking: use vertical pot sulfate DDS for cooking, the cooking liquid is a mixture of sodium hydroxide and sodium sulfide, the total alkali consumption is 15%, sodium sulfide accounts for 14%, the maximum temperature is 130°C, and the cooking H-factor is controlled at 140 , the Kappa value of coarse pulp was 28, the brightness was 25%, the L value was 70, the a value was 4.63, and the b value was 22.2.

[0051] (5) Screening: After cooking, the slurry is passed through a combined ...

Embodiment 3

[0056] Embodiment 3: the preparation of natural color bamboo pulp, it may further comprise the steps:

[0057] (1) Material selection: Four seasons bamboo is used as raw material, and the water content is 45-52%.

[0058] (2) Raw material preparation: Cut the original bamboo into 20-50mm long and 10-20mm wide bamboo slices, with a pass rate of 90%.

[0059] (3) Washing material: The cut bamboo slices are washed by a washing machine to remove most of the impurities on the surface of the bamboo slices.

[0060] (4) Cooking: use vertical pot sulfate DDS for cooking, the cooking liquid is a mixture of sodium hydroxide and sodium sulfide, the total alkali consumption is 10%, sodium sulfide accounts for 13%, the maximum temperature is 140°C, and the cooking H-factor is controlled at 120 , the Kappa value of coarse pulp was 26, the brightness was 26%, the L value was 71, the a value was 4.43, and the b value was 21.5.

[0061] (5) Screening: After cooking, the slurry is passed thro...

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Abstract

The invention discloses a production method of natural-color bamboo pulp and natural-color household paper, comprising the following steps: material selection, material preparation, material washing, cooking, screening, washing, oxidation treatment, pulp washing, pulp making and papermaking. According to the above method, after the cooking section is finished, the whiteness of the obtained pulp is 25-28%, the L value is 70-74, the a value is 4-5, and the b value is 19-23. 32%, L value 71-76, a value 3-4, b value 20-25, finally the whiteness of natural color tissue paper is 30-36%, L value 72-78, a value 3-4, b value 20 -25. The present invention adopts all the natural growth raw materials of bamboo with high cellulose content, such as Ci bamboo, Mian bamboo, Siji bamboo, etc., and utilizes advanced displacement cooking technology and oxidation treatment technology to obtain natural-color bamboo pulp with the characteristics of good brightness and natural soft yellow hue. The natural-color household paper produced has fine touch, soft and natural color, and a light bamboo smell. This method also has the characteristics of low energy consumption, high output, high yield, low cost, and low pollution.

Description

technical field [0001] The invention belongs to the field of pulping and papermaking, in particular to a method for producing natural-color bamboo pulp and the produced natural-color household paper. Background technique [0002] The original natural color household paper is also called natural ecological paper. It was proposed by a paper company in Shandong. It uses biotechnology to replace the traditional pulping process without adding any chemical raw materials. The raw materials are natural ecological wood, vegetable oil, water, starch, Through unique biological fermentation, it fundamentally eliminates the harm of chlorine, benzene, fluorescent powder and other carcinogens and chemical raw materials in bleached tissue paper to the body. [0003] Natural color household paper is suitable for families, hotels, guesthouses, and various catering places, so that all users can get rid of the harm of bleached paper and recycled paper to the human body. [0004] Once this prod...

Claims

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Application Information

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IPC IPC(8): D21C5/00D21C3/02D21C9/02D21H11/12
CPCD21C5/00D21C3/022D21C9/02D21H11/12
Inventor 吴和均曾自银吴和岭陈丙才伍涛陈刚李晓琴
Owner SICHUAN YONGFENG PAPER MAKING JOINT STOCK
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