Method for preparing paper-pulp moulded board and mould there used

Abstract

This invention involves a paper pulp mold pressing plate's preparation method and the mold. Its craft include:after scrap paper immersion beat the paper into pulp, the mold pressing to squeeze out the moisture content and formation, the drawing of patterns and dry. Its characteristic is the paper pulp density not bigger than 6%; And cancel in the existing craft to join the natural resin and the starch in the paper pulp, concentration dehydration the mixed pulp and so on. Its uses mold's characteristic is its frame and the lap can the move relativly; The briquetting is not smaller than obtained mold pressing plate thickness' 9 times in cavity effective work traveling schedule. The paper pulp mold pressing plate, is the entity plate or has the hole plate, its fiber structure is the level laminated structure. This invention simplify the craft, reduce the cost; The product has the better synthesis operational performance; And has a more ideal economic efficiency and the social efficiency. This product may widely apply in industry domains and packing storage and transport, building, repair and office equipment thing, has the enormous market potential.

Description

technical field [0001] The invention relates to a method of pressing fiber pulp or paper material in a model to manufacture an object, in particular to a method for preparing a pulp molded plate and a mold used therefor. Background technique [0002] Using waste paper as raw material to make various boards, used as industrial packaging and storage materials, building decoration materials, etc., has good economic and social benefits, such as the invention patent "A Pulp Molding" recorded in ZL03113817.9 Plates and methods of making them”. However, the technology disclosed in this patent also has obvious disadvantages: (1) in its pulping process step, natural resin and starch are added to the pulp, and through the process steps of stirring and concentrated dehydration, the direction of paper fiber Messy and disorderly, it is difficult to obtain greater tensile strength and flexural strength; (2) as mentioned above, the process is complicated and the cost increases, thereby lo...

AI Technical Summary

Problems solved by technology

However, the technology disclosed in this patent also has obvious disadvantages: (1) in its pulping process step, natural resin and starch are added to the pulp, and through the process steps of stirring and concentrated dehydration, the direction of paper fiber Messy and disorderly, it is difficult to obtain greater tensile strength and flexural strength; (2) as mentioned above, the process is complicated and the cost increases, thereby losing market competitiveness; (3) the use of a large amount of resin and starch does not It is conducive to secondary recycling; (4) The design of the molding machine and the mold is unreasonable, and it is very difficult to demould

Images