Vacuum pressure impregnating and glue-applying technique

Abstract

The invention provides a vacuum pressure impregnation sizing process, and relates to a process for producing plywood for container bottom plates, in particular to a vacuum impregnation sizing process for wood veneers, bamboo mats, bamboo curtains or bamboo chips. The process comprises drying treatment, resin adhesive preparation, sizing and secondary drying. The process for sizing has the advantages of reducing the production cost, ensuring uniform adhesive-absorbing amount and guaranteeing the gluing strength of the plywood for container bottom plates.

Description

technical field [0001] The invention relates to a process for producing plywood for container bottom plates, in particular to a process for vacuum impregnation and sizing of wood veneers or bamboo mats, bamboo curtains and bamboo chips. Background technique [0002] At present, in the processing technology of producing the container floor, the wood veneer, bamboo mat, bamboo curtain or bamboo sheet glue used in the billet assembly is glued or dipped in two ways. Its main disadvantages are: 1. The amount of glue applied is large, and the production cost is high; 2. If flour is added to increase the viscosity of the glue, the flour will be wasted; The amount of glue is uneven, which affects the bonding strength; 4. Since the production of container bottom plates requires the use of hard broad-leaved wood or bamboo, which are materials with relatively high hardness and density, it is difficult for the glue to penetrate into the material through the cell cavity and cell wall; 5....

AI Technical Summary

Problems solved by technology

[0003] What the present invention aims to solve is that in the processing technology of the container floor, the wood veneer, bamboo mat, bamboo curtain or bamboo sheet used in the blank assembly is applied by two methods of gluing or dipping, and the amount of sizing glue is large and the sizing effect is poor. The problem is to provide a method of impregnating resin adhesives into wood veneers or bamboo mats, bamboo curtains, and bamboo sheets under vacuum conditions, so that the resin adhesives can enter the interior of the material through the cell cavity and cell wall of the impregnated material. Go, especially those hard broad-leaved woods or bamboos that are difficult to absorb glue, in order to improve the glue strength, static bending strength, elastic modulus of the container floor