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In the realm of paper manufacturing, achieving desired properties like water resistance and printability is paramount. Alkyl Ketene Dimer (AKD) has emerged as a leading chemical agent for this purpose, particularly valued for its role in neutral sizing processes. This approach is a significant advancement over older, acidic methods, offering numerous benefits for both paper quality and environmental sustainability. Understanding the science behind AKD neutral sizing chemical applications is key to appreciating its impact.
Historically, rosin-alum sizing was prevalent, but it necessitated acidic conditions that could degrade paper over time and were incompatible with alkaline fillers like calcium carbonate. AKD, however, functions optimally in neutral to slightly alkaline environments (pH 7.5-9.0). This compatibility allows for the use of calcium carbonate, which not only improves paper brightness and opacity but also contributes to the paper's longevity. The process involves the chemical reaction of AKD with cellulose fibers, forming ester bonds that create a hydrophobic surface. This is a fundamental aspect of how AKD improves printability and water resistance.
The technical benefits of using AKD are substantial. It provides excellent control over liquid penetration, ensuring that inks applied to the paper remain on the surface, resulting in sharper prints and better color definition. This makes AKD an indispensable AKD paper sizing agent for applications ranging from high-quality printing to durable packaging. The focus on sustainable AKD production methods also aligns with the industry’s broader environmental goals. Manufacturers are exploring ways to produce AKD with reduced environmental footprints, such as through solvent-free processes.
The chemical reaction, or AKD esterification with cellulose, is a precise process that requires careful control of conditions to maximize efficiency and product quality. The resulting hydrophobic character imparted by AKD contributes significantly to the overall durability and performance of the paper product. NINGBO INNO PHARMCHEM CO.,LTD. is dedicated to supplying premium AKD and other specialty chemicals that empower the modern paper industry to produce high-quality, sustainable products. We are committed to advancing the science of papermaking through innovative chemical solutions.
Manufacturing Facilities
Professional Export Experience
to Global Customers
1. 20 years of R&D, manufacturing and sales experience, serving customers in 60 countries and regions around the world;
2. Own R&D laboratory, pilot platform and large-scale production workshop, which can meet the audit requirements of global customers;
3. We can satisfy customers' perfect transition from small scale lab requirements (gram level) to commercialization requirements (hundred tons level).
A: We don't have Minimum Order Quantity, exact quantity should be provided before quotation for us to calculate the exact cost.
A: We don't provide free samples due to lots of request and expensive international courier's cost, we can deduct the sample charge after commercial order placed.
A: Our payment terms: Small or sample order: T/T IN ADVANCE. Commercial order: First order should be by T/T IN ADVANCE or L/C at sight, and following orders T/T 30~90days is acceptable subject to approval of credit application.
