Large and bulky paper pulp die-pressing process and device

Abstract

The invention relates to a large and bulky paper pulp die-pressing process, which includes the following steps: a pulp box loaded with paper pulp is arranged under a forming unit, a paper pulp agitation mechanism is arranged at the bottom in the pulp box, the recess of a forming female die is upward, and moreover, the forming female die can be driven by a driving mechanism to move down into the pulp box, and thereby is immerged into paper pulp; a vacuumizer is utilized to vacuumize the forming female die, so that a wet green is formed; the forming female die upwardly gets close to a male die, the wet green is transferred, the male die brings the wet green to move onto a shaping unit, and the wet green is heated and shaped. The process disclosed by the invention can prepare bulky and large-sized vegetable fiber die-pressed products, the cost is low, and the rate of finished products is high.

Description

technical field [0001] The invention relates to a plant fiber molding process and its equipment, in particular to a large thick body pulp molding process and its equipment. Background technique [0002] At present, the plant fiber molding production line mainly uses waste paper to produce cushioning packaging materials for small household appliances and egg trays. It adopts the traditional papermaking molding process - the mold with a vacuum device and covered with wire mesh is sunk in the pulp pool to absorb paper pulp, and after the pulp is formed on the surface of the mold covered with wire mesh, it is then moved to the drying tunnel to dry into products . Because this technology cannot overcome the self-weight of the pulp and the resistance of the pulp, the heavy wet embryo will fall off the forming mold net when it leaves the pulp pool, so the thickness of the produced product is limited, and it is impossible to prepare thick and large products. [0003] In order to s...

AI Technical Summary

Problems solved by technology

Since the vacuum is indirectly in contact with the atmospheric pressure in the process of spraying the slurry, the vacuum force cannot do work completely and effectively, and it is impossible to obtain blanks with the same density and thickness. High, the thickness of the product can only reach less than 1.5 mm, and the maximum size can only reach 500 mm

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