Paper pulp and high-bulk energy-saving environment-friendly card prepared from same
A pulp and copper card technology, applied in the direction of synthetic cellulose/non-cellulose material pulp/paper, papermaking, paper coating, etc., can solve the problems of poor stability of pulp quality, pulp yellow, unfavorable high-quality stability requirements, etc., to achieve Avoid excessive input into production, reduce energy consumption for refining, and stabilize quality
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Example
[0048] Example 1 and comparative examples 1A, 1B: copper card
[0049] 1. See Table 1 for raw materials and dosage: NBKP is bleached softwood kraft pulp (Canada freeness control 430±20ml), LBKP is bleached hardwood kraft pulp (Canada freeness control 400±20ml), and BCTMP is chemical heat Refiner mechanical pulp (Canada freeness control 250ml), APMP is alkaline hydrogen peroxide mechanical pulp (Canada freeness control 250ml).
[0050] 2. Preparation method:
[0051] 1) Preparation of base paper: Dilute the pulp with water to a slurry with a mass concentration of 5%, centrifuge it for 5 times, then refine the pulp, add chemicals and fillers, mix well, spray the mixture onto the forming wire, then dehydrate and dry , Apply sizing material on the surface, then dry, curl into paper, and make base paper. The dust point of the base paper is required to be ≤5ppm;
[0052] 2) Paint coating: According to the formula, the primer and top coating are applied thinly and evenly on the base paper b...
Example
[0058] Example 2 and Comparative Examples 2A, 2B: copper card
[0059] 1. The raw materials and dosage are shown in Table 2: The Canadian freeness of NBKP is controlled at 430±20ml, the Canadian freeness of LBKP is controlled at 400±20ml, the Canadian freeness of BCTMP is 350ml, and the Canadian freeness of APMP is 350ml.
[0060] 2. Preparation method:
[0061] 1) Preparation of base paper: Dilute the pulp with water to a slurry with a mass concentration of 10%, centrifuge for 4 times, then refining, add chemicals and fillers, mix well, spray the mixture onto the forming wire, then dehydrate and dry , Apply sizing material on the surface, then dry, curl into paper, and make base paper. The dust point of the base paper is required to be ≤5ppm;
[0062] 2) Paint coating: According to the formula, the primer and top coating are applied thinly and evenly on the base paper by the coater, then dried, rolled into a roll on the reel, and then sent to the super calender It is calendered and ...
Example
[0068] Example 3 and Comparative Examples 3A, 3B: copper card
[0069] 1. The raw materials are shown in Table 3: The Canadian freeness of NBKP is controlled at 430±20ml, the Canadian freeness of LBKP is controlled at 400±20ml, the Canadian freeness of BCTMP is 250ml, and the Canadian freeness of APMP is 250ml.
[0070] 2. Preparation method:
[0071] 1) Preparation of base paper: Dilute the pulp with water to a slurry with a mass concentration of 30%, remove iron wires and stones through 3 centrifugation, then refine the pulp, add chemicals and fillers, mix well, and spray the mixture onto the forming wire , Then dehydrate, dry, apply sizing material on the surface, then dry, curl into paper, and make base paper. The dust point of the base paper is required to be ≤5ppm;
[0072] 2) Paint coating: According to the formula, the primer and top coating are applied thinly and evenly on the base paper by the coater, then dried, rolled into a roll on the reel, and then sent to the super cal...
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