Alkyl Ketene Dimer, commonly known as AKD, in its powder or wax form, stands as a cornerstone in contemporary paper manufacturing, particularly for applications demanding high levels of water resistance and environmental safety. This versatile chemical raw material functions primarily as a neutral sizing agent, a critical component in enhancing the surface properties of paper and paperboard.

Traditionally, papermaking involved acidic sizing processes, which could compromise paper strength and durability over time. The advent of neutral sizing agents like AKD powder revolutionized the industry, allowing paper production at neutral or alkaline pH levels. This process not only improves the paper's aging resistance but also offers significant environmental benefits and enables the use of calcium carbonate fillers, which are more economical and brighter than traditional clay fillers.

AKD raw powder is a fiber-reactive sizing agent. When applied to the paper web, it reacts with the cellulose fibers to form a chemical bond, creating a hydrophobic barrier that prevents excessive water penetration. This reaction ensures effective and long-lasting sizing performance. High-quality AKD powder is characterized by several key metrics including high effective content, high iodine value, and low acid value. These properties ensure the efficiency and stability of the sizing process. Furthermore, solvent-free production methods mean that AKD powder is typically free from toxic substances, making it particularly suitable for sensitive applications like liquid food packaging paper where hygiene standards are paramount.

The physical form of AKD used in sizing is typically a solid powder or wax, which is then emulsified into a stable dispersion using cationic starch or synthetic polymers before application. The emulsification process requires precise control of temperature and pressure to achieve fine particle size and uniform dispersion, crucial for consistent sizing performance across the paper web. Optimal emulsification ensures that the AKD particles are effectively retained by the negatively charged cellulose fibers, allowing the sizing reaction to occur efficiently during the drying phase.

NINGBO INNO PHARMCHEM CO.,LTD. is a reliable supplier of Alky Ketene Dimer in powder and wax forms, offering grades suitable for various papermaking needs. Their commitment to quality ensures that the AKD supplied meets stringent performance specifications, providing papermakers with a consistent and effective sizing solution. Understanding the technical specifications and application guidelines is essential for maximizing the benefits of AKD sizing.

For businesses looking to source high-quality AKD powder, finding a trusted manufacturer or supplier is key. The price of AKD can vary based on purity, grade, packaging, and order volume. Prospective buyers are encouraged to research and connect with reputable sources to buy or purchase this essential raw material. NINGBO INNO PHARMCHEM CO.,LTD. is ready to assist with inquiries regarding their AKD product offerings and supply capabilities.