Large and bulky paper pulp die-pressing process and device

A molding equipment and pulp technology, applied in the direction of textiles and papermaking, etc., can solve the problems of not being able to work completely and effectively, only reaching 1.5mm, and not being able to obtain blanks, etc., to achieve the improvement of technical level, uniform thickness, and increase variety. Effect

Active Publication Date: 2015-05-27
谷照林
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  • Application Information

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

Method used

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  • Large and bulky paper pulp die-pressing process and device
  • Large and bulky paper pulp die-pressing process and device
  • Large and bulky paper pulp die-pressing process and device

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Embodiment Construction

[0025] Large thick body pulp molding process step of the present invention is as follows:

[0026] ⑴. A pulp box with paper pulp is installed under the forming equipment, and a pulp stirring mechanism is installed under the inner side of the pulp box. immersed in pulp;

[0027] (2) Vacuumize the forming die by using a vacuum device to remove water, so that the pulp material is covered on the wire mesh on the inner surface of the forming die to form the required thickness;

[0028] ⑶. The forming die is moved upwards out of the pulp box driven by the driving mechanism, and after further dehydration, it is matched with the forming punch located above the pulp box, and then the forming die is released to vacuumize, and the vacuum valve of the forming punch is opened, so that The wet embryo formed in the mold is adsorbed to the forming punch;

[0029] ⑷. Translate the forming punch and the wet embryo transferred to the forming punch to the shaping equipment through the lateral m...

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PUM

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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...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D21J7/00
Inventor 谷照林
Owner 谷照林
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