Preparation process of high breakage-resistant and environmentally friendly kraft linerboard

Abstract

The invention relates to a preparation process of test-liner environment-friendly kraft cardboard paper. The preparation process comprises the following steps: A, picking and selection of fine waste paper raw materials; B, crushing process; C, screening and purification; D, heat dispersion; E, treatment in a slurry storage tower; F, pulping process; G, treatment in a post-processing tank; H, treatment in a pulp distribution tank; I, treatment in a pulp forming tank; J, treatment by using a desander; K, treatment by using a pressure screen; L, treatment by using a net part; M, treatment by using a press part; N, treatment by using a front drying part; O, treatment by using a sizing machine; P, treatment by using a post-drying part; Q, treatment by using a hard calender; and R, reeling-up process. According to the preparation process provided by the invention, waste paper is recycled, and the obtained product with the same quality with test-liner environment-friendly kraft cardboard paper taking wood pulp as a raw material is produced, so that the cost is greatly reduced, the resources are saved, the effective circulation reuse of the renewable resources is guaranteed, and the damageto the environment is reduced. The preparation method has strong practicality and has strong promotion significance.

Description

technical field [0001] The invention relates to a papermaking process, in particular to a preparation process for high-breakage-resistant and environmentally-friendly kraft liner paper. Background technique [0002] Container board, also known as kraft paper and kraft cardboard, is one of the main paper types for carton paper. The raw materials for the production of containerboard paper generally use two raw materials: virgin wood pulp and waste paper wood pulp. Among them, virgin wood pulp has better burst resistance and performance, but the cost is higher, and it consumes more forest, water and electricity. At the same time, more pollutants are discharged. From the perspective of sustainable development, the trend in the industry is to reduce the use of virgin wood pulp as much as possible, save living resources, and recycle renewable resources as much as possible. Waste paper wood pulp is a very important renewable material, its paper production cost is low, and it can ...

AI Technical Summary

Problems solved by technology

However, in the existing process, there are still many defects in the process of using waste paper pulp for papermaking, and the quality of the produced kraft liner board cannot be guaranteed.

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