Air current method forming net dry method paper machine

Abstract

An air-laid web-forming dry paper machine comprises at least one forming device, a sizing device and a cooling device which are arranged on a frame from front to back in turn, and the sizing device comprise at least two sizing devices and box type drying ovens. An embossing device and a preloading thermal roll group are additionally arranged between the forming devices and the sizing device and a curing device and a calendaring device are additionally arranged between the sizing device and the cooling device. The unwindering devices are arranged at the front and / or rear sides of the forming device or / and between two forming devices and different types of roll-shaped coiled materials are rolled on the winding-up rollers of the undwindering device. The air-laid web-forming dry paper machine also comprises a fluff pulp hydropress providing the forming device with the materials, a heat binding fiber opening and conveying measurement device and powder adding devices. As more than two sizing devices are adopted and a plurality of unwindering devices and powder adding devices are arranged, the dry paper with a plurality of structures and fibers is produced by sizing and laying the forming fiber nets having different properties on the paper webs many times and adding different uses of powders.

Description

technical field [0001] The invention relates to the technical field of papermaking equipment, in particular to an air-laid dry-laid paper machine. Background technique [0002] The traditional papermaking technology uses water as the medium to disperse and transport fibers. It is dehydrated by a cylinder or fourdrinier to form a paper web, and the fibers are bonded by hydroxyl bonds. Therefore, the production process requires a large amount of water, causing serious damage to the water environment. pollution. With the continuous progress and development of society, economy, and culture, as well as the increasing awareness of environmental protection, the pollution of the paper industry has become a serious social problem. However, the demand for paper and its products is increasing, and the contradiction is very prominent. [0003] Since the 1970s, non-woven fabric production technologies represented by carding, airflow, and spunbonding have been widely used. Among them, t...

AI Technical Summary

Problems solved by technology

[0007] The above composite airlaid paper machines can achieve satisfactory results in the production of glued airlaid paper, thermally bonded airlaid paper, and composite airlaid paper, but cannot produce airlaid paper varieties with sizing on both sides

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