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A production process and technology for preventing myopia, applied in the field of papermaking, can solve problems such as damage to the environment, high production costs, deforestation, etc., and achieve the effects of reducing environmental pollution, softening color and increasing color fastness.
Active Publication Date: 2020-06-09
西安天成印务有限公司
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Problems solved by technology
[0004] According to the traditional production process, only logs are used to make paper, which results in deforestation, damages the environment, and high production costs
Method used
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Embodiment 1
[0035] Embodiment 1: a kind of production technology of anti-myopia paper, comprises the following steps:
[0036] Step 1, preparing waste thin paper deinked pulp, coniferous wood pulp, and wheat straw pulp respectively;
[0037] Step 2, uniformly mixing waste tissue paper deinked pulp, coniferous wood pulp, and wheat straw straw pulp to obtain mixed pulp, the weight percentage of the three is: waste tissue paper deinked pulp 55%, coniferous wood pulp 15%, wheat straw Straw pulp is supplemented to 100%;
[0038] Step 3, the obtained mixed pulp is screened through a pressure sieve, and then the fiber separator is used to separate the mixed pulp, so that the fiber purity is controlled to be greater than 95%, and the impurity removal rate is greater than 95%;
[0039] Step 4: Add Basic Bright Yellow, Tartrazine and Sunfast Yellow to the separated fiber slurry, the weight percentages of Basic Bright Yellow, Tartrazine and Sunfast Yellow in the fiber slurry are 0.03%, 0.03%, and 0...
Embodiment 2
[0047] Embodiment 2: A kind of production technology of anti-myopia paper, the difference with embodiment 1 is that the percentage by weight of the three is: waste tissue paper deinking pulp 60%, coniferous wood pulp 13%, wheat straw pulp to 100%.
Embodiment 3
[0048] Embodiment 3: A kind of production technology of anti-myopia paper, the difference with embodiment 1 is that the percentage by weight of the three is: waste thin book paper deinking pulp 65%, coniferous wood pulp 10%, wheat straw pulp make up to 100%.
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Abstract
The invention discloses a production process of myopia-preventing paper, which relates to the field of papermaking. The method comprises the following steps: step 1, respectively preparing waste brochure paper deinked pulp, softwood pulp and wheat straw pulp; step 2, uniformly mixing 55-65% by weight of the waste brochure paper deinked pulp, 10-15% by weight of the softwood pulp and the wheat straw pulp until the total weight percentage is 100%; step 3, sieving the obtained mixed pulp through a pressure sieve, carrying out fiber separation on the mixed pulp by adopting a fiber separator, and controlling the fiber purity to be greater than 95% and the impurity removal rate to be greater than 95%; step 4, adding basic light yellow, lemon yellow and sun-fast yellow into the separated fiber pulp, and uniformly mixing to obtain colored pulp; and step 5, adding a papermaking additive into the coloring pulp, feeding the coloring pulp into a paper machine for papermaking, dehydrating and drying to obtain the myopia-preventing paper. The myopia-preventing paper prepared by the invention has a good myopia-preventing effect.
Description
technical field [0001] The invention relates to the technical field of papermaking, in particular to a production process of anti-myopia paper. Background technique [0002] Due to the high pressure of study, middle school students spend a long time facing books every day and use their eyes intensively. Usually, the homework books used by students are printed on white paper, and the homework books have high brightness. Students need to pay attention to the words on the paper with high reflective intensity for a long time during the writing process. In this case, the students suffer from severe visual fatigue, their eyesight gradually declines, and eventually lead to myopia. [0003] Present anti-myopia paper generally adopts plant fiber to produce, needs to cut down a large amount of trees and bamboo, and the mode that the white paper after bleaching is added dyestuff is mostly adopted prepares anti-myopia paper. [0004] According to the traditional production process, on...
Claims
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