Kraft paper glue impregnation process

Abstract

The invention discloses a kraft paper glue impregnation process; wherein the impregnation time is changed by changing the position of a glue inlet point and the number of rollers in a glue basin on the premise of not changing the conveying speed of kraft paper, so that the purpose of regulating and controlling the gluing amount is achieved, and the glue impregnation requirements of kraft paper with different specifications are conveniently met; secondly, through the process of scraping glue before glue extrusion, the glue is prevented from splashing when passing through a high-speed steel roller during glue extrusion; finally, the glue basin is changed into the deep glue basin, so that the actual surface area of kraft paper impregnation is folded in a three-dimensional mode by increasing the depth of the glue basin, the planar impregnation surface area is reduced, volatilization of glue materials is reduced, and the glue materials are saved.

Description

technical field [0001] The invention relates to the technical field of kraft paper production, more specifically, it relates to a process of kraft paper impregnated with glue. Background technique [0002] Kraft paper is a tough and water-resistant packaging paper. It is brown in color and has a wide range of uses. It is often used to make paper bags, envelopes, workbooks, record sleeves, files and sandpaper. Strong tension and pressure will not break, so the production process of kraft paper must go through the dipping process. The purpose of dipping is to increase the erasability of the paper. Surface sizing can reduce the penetration of ink, so it is easy to wipe off the ink, increasing the The anti-friction ability of the paper surface; improve the printing suitability, if the surface rubber is too small, the paper will absorb too much linking material in the ink during printing, resulting in dull printing; increase the strength of the paper, such as bursting resistance ...

AI Technical Summary

Problems solved by technology

[0004] Generally, the amount of glue applied to impregnated kraft paper is relatively small, so the requirements for the extrusion system are relatively high. The existing process uses a steel roller and a rubber roller to squeeze against each other, which can form a small gap and control the glue application. amount, but it is easy to squeeze the paper, resulting in a lot of waste; glue is highly volatile, and the volatilization amount and volatilization speed are equal to the surface area of ​​the rubber basin. The amount of kraft paper is small, so the residence time of kraft paper on the impregnation machine is very short, that is to say, the paper runs at a high speed. If the impregnation time is long, the wet tensile strength of the paper will decrease, which will easily cause paper breakage. If the time is too short, insufficient penetration will occur. sufficient, thus affecting the pressing effect, apart from the quality of the paper itself, we can only ensure the impregnation time by reducing the production speed, which affects the production efficiency