Method for manufacturing thin wrapping paper by deinked pulp

Abstract

The invention discloses a method for manufacturing thin wrapping paper by deinked pulp, comprising the following steps of: carrying out pretreatment on bleached chemical softwood pulp, bleached chemical hardwood pulp, deinked to form thermomechanical pulp; manufacturing paper with pulp after respectively pulping; drying by a dryer and carrying out surface calendaring treatment, wherein the beating degrees of the bleached chemical softwood pulp, the bleached chemical hardwood pulp and the deinked pulp after pulping are respectively 30-40 degree SR, 25-35 degree SR and 50-62 degree SR, the ration of the manufactured thin wrapping paper is 16-20g / m<2>, and the whiteness is not lower than 75 percent. For the thin wrapping paper manufactured by processing the deinked pulp by adding the bleached chemical softwood pulp and the bleached chemical hardwood pulp, pulp is processed transversely and longitudinally by adopting a unique pulping process, thereby improving the physical property of paper, ensuring that the bleached chemical softwood pulp, the bleached chemical hardwood pulp and the deinked pulp are specifically matched under the condition of keeping the high strength of paper, not only saving resources, but also lowering the production cost.

Description

technical field [0001] The invention discloses a manufacturing method of thin page wrapping paper, belongs to the technical field of thin page paper manufacturing in the papermaking industry according to the International Patent Classification (IPC), and in particular relates to a thin page wrapping paper produced from waste paper deinked pulp. Background technique [0002] Tissue paper, a general term for a type of paper with a weight of less than 22g / m2. The paper is thin and soft, and some have a certain degree of transparency. Among them, tissue paper is generally used in the lining packaging of high-end products. The production of tissue packaging paper is basically the same as the ordinary papermaking process, and its process includes: pulp sheet preparation -- pulp sheet crushing -- beating or refining -- pulp preparation -- purification -- pulp screening -- pulp flow Pulp out of the box--wire dehydration--press dehydration--drying--calendering--rolling--rewinding--pa...

AI Technical Summary

Problems solved by technology

[0003] The raw materials used in common papermaking are generally fibrous raw materials such as wood, reed, straw, etc. The papermaking process is mainly to cook the raw materials, beat the pulp, and then make paper. The above-mentioned papermaking process has high energy consumption and large pollution, especially for some small paper mills. The capacity is poor, resulting in serious pollution to the surrounding environment of the factory area, and the recovery rate of waste paper pulp in the papermaking process is low, and the utilization rate of raw materials cannot be improved, resulting in a waste of resources to a certain extent

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