Surface sizing process for corrugated cardboard processing

Abstract

The invention discloses a surface sizing process for corrugated cardboard processing. The process comprises the following steps: 1) preparation of a glue solution; 2) preparation of a bubble agent; 3)bubble glue solution preparation: the glue solution A and the bubble agent B are mixed, and poured on a colloid mill, and a double-mill kneading method is used to obtain the bubble glue solution C, and 4) a sizing process of the bubble glue solution: the surface of corrugated base paper is coated with the bubble glue solution C in a rolling brush manner, and drying with hot air is performed; a sizing machine is used to coat the bubble glue solution C; and surface bubbles are eliminated with a polyurethane scraper, leveling is performed, and then drying is performed to obtain finished corrugated paper. According to the process, the glue solution is foamed and then mounted on the corrugated paper surface for the first time, a new sizing process in which a relatively thin glue solution is smoothly mounted on the corrugated paper surface can be realized, and the smooth penetration of the glue solution into fiber pores is promoted by cooperating with the bubble elimination process. At thesame time, the adverse phenomenon that the corrugated paper is soaked by the relatively thin glue solution is avoided, the yield is high, the obtained corrugated paper has relatively high strength, and the application in the field of high-strength cartons is met.

Description

technical field [0001] The invention relates to the technical field of packaging carton processing, in particular to a surface sizing process for corrugated cardboard processing. Background technique [0002] In the processing of corrugated cardboard, the surface sizing technology of corrugated base paper is particularly important. The surface sizing process of the existing corrugated base paper is generally completed by an oblique surface sizing machine. The process of the double-roller sizing press is carried out at the same time and can be subdivided into three stages, as follows: [0003] The first stage: capillary action stage. When the corrugated base paper, which has been dried to a certain dryness by the front drying cylinder, enters the "glue tank" formed between the two sizing rollers, the base paper begins to absorb the starch glue, and at this time the capillary action of the capillary formed by the pores inside the paper sheet dominates. , the tightness of the...

AI Technical Summary

Problems solved by technology

[0007] However, in the existing sizing process, the viscosity of the glue is not easy to control, the viscosity is too thin, the film thickness of the glue on the surface of the corrugated base paper is relatively thin, and it cannot withstand the strength of the subsequent corrugating process, and the viscosity is too thin and it is easy to soak into the corrugated paper. Unfavorable phenomenon of glue penetration; too thick viscosity, macromolecules in the glue are not easy to penetrate into the fiber pores of the corrugated base paper, and the glue is not uniform, resulting in uneven hardness and strength of the final corrugated base paper