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Method for manufacturing art paper with high content of mechanical pulp and art paper manufactured therefrom
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A manufacturing method and technology of mechanical pulp, applied in chemical and mechanical pulp mixture, paper, papermaking and other directions, can solve the problems of not high content of mechanical pulp and high addition amount of mechanical pulp, so as to improve the ability of sustainable development and reduce consumption. The effect of reducing consumption and production cost
Active Publication Date: 2011-08-10
GOLD EAST PAPER JIANGSU
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[0006] In order to overcome the problem that the content of mechanical pulp in the production of coated paper in the prior art cannot be high, the purpose of the present invention is to provide a coated paper with high mechanical pulp content and its manufacturing method. In the manufacturing method, a high amount of mechanical pulp is realized. , that is, 50-60%
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Embodiment 1
[0023] Embodiment 1 (laboratory evaluation)
[0024] Adding 5% NaHCO to the refined mechanical pulp without changing the base papermaking process and coating process 3 (relative to the dry pulp), increase the proportion of mechanical pulp to 50%, and carry out the manufacture of coated paper with high mechanical pulp content. The obtained results are compared with the standard group in Table 1.
[0025] Table 1
[0026]
[0027] An art paper with high mechanical pulp content prepared by the method of the present invention comprises a base paper 1 made of pulp, and the mechanical pulp content in the base paper 1 is 50%.
Embodiment 2
[0028] Embodiment 2 (laboratory evaluation)
[0029] On the premise that the base papermaking process and coating process remain unchanged, 1.5% NaOH (relative to the dry pulp) is added to the refined mechanical pulp, and the proportion of mechanical pulp is increased to 60%. Manufacture of pulp content coated paper. The obtained results are compared with the standard group in Table 2.
[0030] Table 2
[0031]
[0032] An art paper with high mechanical pulp content prepared by the method of the present invention comprises a base paper 1 made of pulp, and the mechanical pulp content in the base paper 1 is 60%.
Embodiment 3
[0033] Embodiment 3 (laboratory evaluation)
[0034] On the premise that the base paper making process and coating process are not changed, add 0.5% cationic guar gum (relative to the dry pulp) to the bleached chemical pulp after refining, and add 30% to the bleached chemical pulp after mixing treatment , the addition ratio of mechanical pulp is increased to 50%, and the manufacture of coated paper with high mechanical pulp content is carried out. The obtained results are compared with the standard group in Table 3.
[0035] table 3
[0036]
[0037] An art paper with high mechanical pulp content prepared by the method of the present invention comprises a base paper 1 made of pulp, and the mechanical pulp content in the base paper 1 is 50%.
[0038] It can be seen from the above that while the present invention achieves a high mechanical pulp content, the overall strength of the coated paper can still be maintained or even improved without any negative impact on the paper...
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Abstract
The invention discloses a method for manufacturing art paper with high content of mechanical pulp and the art paper manufactured therefrom, the art paper comprises base paper made from paper pulp, the base paper contains 50%-60% of the mechanical pulp. The manufacturing method comprises the steps: pretreating the refined paper pulp by adding pretreating auxiliary agent with the concentration of sizing agent controlled between 1.5% and 6%, the addition amount of the pretreating auxiliary agent being 0.1-10% in relation to absolute dry pulp, the preteating time being 20-60 minutes and the pretreating time being 30-70 DEG C, resulting in the pretreating sizing agent, mixing the preteating sizing agent with untreated sizing agent, and applying the mixture to the manufacturing of the art paperdirectly, wherein the content of the mechanical pulp is 50%-60%. The manufacturing method is simple, safe and reliable. The manufacturing method can dramatically promote the content of the mechanicalpulp in the art paper and economize on the consumption of wood in the process of papermaking. Meanwhile, the increased content of the mechanical pulp is favorable for lowering the production cost of papermaking industry.
Description
technical field [0001] The invention belongs to the field of pulping and papermaking, in particular to a method for manufacturing coated paper with high mechanical pulp content and the prepared coated paper. Background technique [0002] Generally, the yield of bleached chemical pulp is 40-50%, up to 55%, while the yield of mechanical pulp is 85-90%, even as high as 95%. The yield of mechanical pulp is significantly higher than that of bleached chemical pulp. The extensive use of mechanical pulp has made an important contribution to improving the utilization rate of natural resources such as wood, and can effectively protect forest resources and the ecological environment. At the same time, the consumption of related chemicals in the pulping process of mechanical pulp is only about 30% of that of bleached chemical pulp, which means that increasing the amount of mechanical pulp can not only better protect our forest resources, but also protect our water. Resources play an im...
Claims
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Application Information
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