Surface sizing agent for improving paper deflection and paperboard circular press stength

Abstract

The present invention related to a surface sizing agent for raising stiffness of paper and ring crush of board. It is a mixture made up by using (by wt %) 80-99.5% of water-soluble thermosetting resin adhesive and 0.5-20% of solidifying agent. Said invention also provides its application method.

Description

1. Technical field: [0001] The invention relates to the technical field of surface sizing agents, in particular to a surface sizing agent for improving the stiffness of paper and the ring pressure strength of cardboard. 2. Background technology: [0002] The rapid development of domestic paper product packaging has promoted the continuous growth of domestic demand for high-strength corrugated base paper and kraft liner paper. At present, the future development trend of my country's corrugated box industry is to develop corrugated base paper in the direction of low weight, high strength and light weight. The domestic consumption of high-strength corrugated base paper is still large, and we should vigorously develop local high-strength corrugated base paper and reduce the amount of imports. [0003] The strengthening agents currently used for paper and paperboard mainly include: starch chemical additives, polyacrylamide (PAM) strengthening agents, copolymer emulsion type stre...

AI Technical Summary

Problems solved by technology

[0005] The object of the present invention is to provide a kind of surface sizing agent that improves the stiffness of paper and the ring crushing strength of cardboard, it can overcome the stiffness of paper after sizing in the existing surface sizing agent and the ring crushing strength of cardboard, surface sizing agent. Disadvantages of insufficient strength and water resistance