Method for making hand-made paper by dry method

Abstract

The invention relates to a method for making handmade paper by a dry method, wherein, bamboo is adopted as raw material, dry paper pulp is obtained after the bamboo is crashed, a dry paper pulp sheet can be obtained from the dry paper pulp by extrusion, the dry paper pulp sheet is further dispersed into fiber, and the dry paper pulp fiber enters an air channel in the suspension form under the action of an airflow generated by an induced draft fan and is intercepted by a polyester net to form a uniform dry paper pulp layer which is covered with a fixed layer; under the holding of the upper fixed layer and the lower polyester net, wet paper is formed by the dry paper pulp layer treated with water absorption by a water supplying tank, the wet paper is separated from the fixed layer and the polyester net after being extruded, and the handmade paper can be obtained form the separated wet paper by drying. The method for making the handmade paper has only one harmful chemical, i.e., alkali liquor which is added in the production process, and gas and liquid are not discharged in the production process to pollute the environment; in the pulping process, the pulp outcome rate of the raw material reaches more than 95 percent, the sizing agent does not need washing and can not be lost, thus utilizing the bamboo resources maximally and saving the raw material.

Description

Technical field [0001] The invention relates to a method for manufacturing soil paper, in particular to a dry method for manufacturing soil paper without emissions and low pollution. Background technique [0002] Earth paper, also known as Ming paper, is a kind of sacrificial article. The currently used process is to put the raw bamboo into a pool with quicklime or alkali soaking, soak it for three months and then use a stone roller to crush it to cut and split the bamboo into thick fiber bundles. The thick fiber bundles enter the beating machine to be beaten with water to further cut the thick. The fiber bundles are broomed and divided into fine fibers. The beaten pulp contains 95% of the water. The pulp is pumped to the cylinder of a traditional wet paper machine to form a uniform fiber layer (wet paper sheet), which is carried by the felt. Roll, vacuum box, squeezing and dewatering to roll into wet paper (90-100% water content), the wet paper is manually cut into sheets with a...

AI Technical Summary

Problems solved by technology

This kind of technology can't produce continuously because of needing to soak bamboo for a long time, and the production efficiency is low; the traditional method consumes a lot of water, and the discharged water contains alkali and a lot of fibers, the loss is serious, and the pulping rate is within 60%, causing serious damage. environmental pollution

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