White-surface coated craft paper and production method thereof

Abstract

The invention discloses white-surface coated craft paper and a production method thereof. The white-surface coated craft paper comprises a core paper layer; the upper side of the core paper layer is a surface paper layer, and the lower side is a bottom paper layer; a coating layer is arranged on the upper surface of the surface paper layer; the bottom paper layer and the core paper layer of the white-surface coated craft paper are prepared by the steps of: dosing the waste paper, preparing waste paper pulp to obtain non-deinked waste paper pulp, and manufacturing paper through a paper layer to obtain a wet bottom paper layer and a wet core paper layer; the surface paper layer is prepared by the steps of: mixing the bleached hardwood pulp, bleached softwood pulp and bleached regenerated fiber pulp DIP at any proportion, and manufacturing paper through a paper layer to obtain a wet surface paper layer; and the wet bottom paper layer, the wet core paper layer and the wet surface paper layer are subjected to the steps of compounding with the coated body paper, preliminary drying, sizing, later drying, paper surface calendering, paper surface coating and after-treatment to obtain the white-surface coated craft paper. The available waste paper types are increased, and the fiber source is wider; and meanwhile, the quality of the waste paper pulp is effectively stabilized so as to guarantee the quality stability of the coated body paper and the white-surface craft paper and avoid easy layering, splitting and scaling.

Description

technical field [0001] The invention relates to a kraft cardboard, in particular to a white surface coated kraft cardboard and a production method thereof, belonging to the technical field of kraft cardboard manufacturing. Background technique [0002] With the development of the national economy, the circulation of various commodities such as electronics, electromechanical, instrumentation, daily chemicals, clothing and textiles is increasing. Quality also puts forward higher requirements. [0003] The initial kraft cardboard is usually a single-layer structure made of natural chemical pulp and single-wire forming. In order to increase its thickness and stiffness to provide better packaging performance, it gradually develops into double-layer or multi-wire papermaking. , forming natural color chemical pulp vermicelli, lined with waste paper pulp, and then compounded into a two-layer or multi-layer structure product. At present, most of the products on the market are a thr...

AI Technical Summary

Problems solved by technology

[0012] The technical problem to be solved by the present invention is to provide a kind of white surface coated kraft cardboard and its production method for the above deficiencies, which overcomes the problems of easy delamination, breakage and peeling of the kraft cardboard in the prior art, paper surface pigment layer coverage and Due to the defect of uneven ink absorption, the kraft cardboard manufactured by the method is not easy to delaminate, break, and burst, and the quality index is stable. At the same time, the paper pigment layer coverage and ink absorption are uniform, environmentally friendly, and low in cost.

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