Corrugated paper preparing process and device

Abstract

The invention discloses a corrugated paper preparing process. The corrugated paper preparing process comprises the following steps of S1, raw material treatment including processing the raw materialsof wastepaper and wood fiber into pulp, S2, pulp mixing including uniformly mixing the wastepaper pulp and the wood fiber pulp, S3, dewatering including dewatering the mixed pulp to reach a mass concentration of 18-25%, S4, pulp grinding including grinding the dewatered pulp, and S5, manufacturing including preparing the ground pulp into a finished product, namely, corrugated paper. The inventionfurther discloses a device applied to the corrugated paper preparing process. The device comprises a dewatering device, a pulp grinding device, and a conveying device communicating the discharging port of the dewatering device and the feeding port of the pulp grinding device. The corrugated paper preparing process and device has the advantages of being convenient to operate, low in cost, good in major physical indexes of finished paper and the like.

Description

technical field [0001] The invention relates to a papermaking process and used equipment, in particular to a corrugated paper preparation process and equipment. Background technique [0002] At present, in domestic corrugated papermaking, most of the fiber raw materials are waste paper. The number and production capacity of domestic papermaking enterprises using waste paper as raw materials have increased significantly year by year, the demand for waste paper is also increasing, and the price of waste paper has always been high. In addition, in response to environmental protection issues, the country has restricted the import of waste paper, which has greatly reduced the import of waste paper. As a result, manufacturers in the paper industry that use waste paper as raw materials are generally facing a shortage of raw materials. [0003] In order to cope with the shortage of waste paper raw materials, reduce waste paper consumption, and reduce production costs, many domestic...

AI Technical Summary

Problems solved by technology

At present, there is a kind of wood fiber raw material (semi-finished MDF and / or MDF waste, MDF waste is also called scrap) that is not produced according to the national standard mechanical pulp preparation method. The cost is relatively low, and many corrugated paper production The factory tried to add it to replace waste paper, but the technology could not meet the use requirements

This kind of wood fiber raw material is mainly wood fiber filaments that are simply heated and crushed. The uniformity and bonding force of the fiber filaments are far worse than those of waste paper fibers. Direct addition will inevitably lead to a decline in the quality of the finished paper

At present, one of the traditional processes is to directly add wood fiber filaments without refining treatment during papermaking. The problem is that if no pulping is performed, the fibers are relatively thick, the uniformity is not good, and the slurry rate is high; the other is to add wood fiber filaments The paper is mixed with waste paper after low-consistency refining. The problem is that it is easy to grind after low-concentration refining.

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