Application of neutral sizing agent AKD in papermaking

This article briefly describes the characteristics and application of AKD sizing agent.

AKD neutral adhesive is a high-performance adhesive used in papermaking, with a wide range of applications and excellent performance characteristics. AKD is a commonly used neutral sizing agent in domestic paper mills, which can be used as both an internal sizing agent and a surface sizing agent. It can react with fibers to form ketone ester derivatives, which are located on the fibers, causing the hydrophobic end of the molecule to extend outward from the surface, forming a hydrophobic layer on the fiber surface and endowing the paper with a certain degree of water resistance.

AKD neutral adhesive is a lotion adhesive based on potassium salt of advanced fatty acid. It has the following advantages:

The adhesive effect is high and can be re applied, suitable for applications such as liquid wrap paper that require re application;

Significant improvement in paper performance, including increased strength, whiteness, transparency, and printing performance, as well as an extended lifespan of the paper;

Less pollution, the white water system of the paper machine is easy to treat, and there is less wastewater discharge;

Good adaptability of pulp, which can reduce beating time and energy consumption, and save energy;

Fillers such as calcium carbonate, waste paper, and short fibers can be used to reduce the cost of papermaking raw materials;

Neutral sizing agents can reduce equipment corrosion, improve the performance of paper machine operation, and make the wet end system cleaner.

Application of AKD neutral adhesive:

a. Packaging paper production: Packaging paper is one of the common types of paper in daily life, and AKD neutral adhesive can quickly and firmly bond the paper together, ensuring the sealing and firmness of the packaging paper.

b. Printing paper bonding: During the printing process, it is necessary to bond the paper together. AKD neutral adhesive can provide good bonding effect, improve printing quality and efficiency.

c. Adhesive bonding between news paper and magazine paper: News paper and magazine paper require high-speed production lines, and AKD neutral adhesive can provide stable bonding effect on high-speed production lines, improving production efficiency.

d. Cardboard production: Cardboard is a common packaging material, and AKD neutral adhesive can be used to produce various types of cardboard, such as honeycomb cardboard, corrugated cardboard, etc.

e. Other paper adhesives, such as labels, advertisements, posters, etc., require paper to be bonded together, and AKD neutral adhesive can also provide good bonding effect.

Neutral sizing agents, as additives added to improve the workability of paper and enhance its performance and quality, are widely used in the papermaking industry. AKD neutral adhesive, as a high-performance adhesive for papermaking additives, has a wide range of applications and excellent performance characteristics. It can not only improve the bonding effect between paper and cardboard, but also increase production efficiency and save production costs. Pay attention to safety precautions during use, follow operating procedures, and ensure production and use safety.