Method for producing top-grade single-face coating manila board by replacing OCC blending with wood chip thermal pulp grinding
A single-side coating and production method technology, which is applied to papermaking, paper machines, and waste paper processing, can solve the problems of low thickness and unstable thickness of single-side coated gray-bottomed whiteboard paper, and achieve significant environmental benefits and high production efficiency. The effect of cost reduction and cost saving
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Example Embodiment
[0050] Example one
[0051] The present invention is a method for producing high-grade single-side coated gray-bottomed whiteboard paper by replacing OCC with hot refining of wood chips, including the following steps:
[0052] Preparation:
[0053] DIP deinking pulp preparation for surface layer-using recycled office waste paper as raw material, DIP deinking pulp is obtained after DIP deinking pulp line treatment, the brightness value of the deinking pulp is 78, the freeness is 230ml, and the pulp is formed The appearance quality of the copy is normal;
[0054] Liner OCC pulp preparation-using recycled mixed waste paper pulp as raw materials, processed by OCC pulp line, and after grading and screening the OCC medium fiber pulp through the heat removal dispersion system, the stickies and oil wax in the pulp are Effectively disperse, the medium fiber is pulped after pan-pulverization, and its freeness is 230ml;
[0055] Using wood chips as raw materials, wood chip pulp is prepared throu...
Example Embodiment
[0090] Example two
[0091] The difference between the second embodiment and the first embodiment is:
[0092] Preparation:
[0093] DIP deinking pulp preparation for surface layer-using recycled office waste paper as raw material, DIP deinking pulp is obtained after DIP deinking pulp line treatment, the brightness value of the deinking pulp is 80, the freeness is 240ml, and the pulp is formed The appearance quality of the copy is normal;
[0094] Liner OCC pulp preparation-using recycled mixed waste paper pulp as raw materials, processed by OCC pulp line, and after grading and screening the OCC medium fiber pulp through the heat removal dispersion system, the stickies and oil wax in the pulp are Effectively disperse, the medium fiber is pulped after pan-pulverization, and its freeness is 240ml;
[0095] Using wood chips as raw materials, wood chip pulp is prepared through the wood chip pulp preparation line feeding, wood chip thermal grinding, refined pulp, screening, concentration, ...
Example Embodiment
[0114] Example three
[0115] The difference between the third embodiment and the first embodiment is:
[0116] Preparation:
[0117] DIP deinking pulp preparation for surface layer-using recycled office waste paper as raw material, DIP deinking pulp is obtained after DIP deinking pulp line treatment, the brightness value of the deinking pulp is 82, the freeness is 250ml, and the pulp is formed The appearance quality of the copy is normal;
[0118] Liner OCC pulp preparation-using recycled mixed waste paper pulp as raw materials, processed by OCC pulp line, and after grading and screening the OCC medium fiber pulp through the heat removal dispersion system, the stickies and oil wax in the pulp are Effectively disperse, the medium fiber will be pulped after refining the refined pulp, and its freeness is 250ml;
[0119] Using wood chips as raw materials, wood chip pulp is prepared through the wood chip pulp preparation line feeding, wood chip thermal grinding, refined pulp, screening, c...
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