We offer a comprehensive portfolio including DMDAAC, PDMDAAC (liquid and exclusive bead/powder forms), and Polyacrylamide (PAM) series, with an annual production capacity of over 50,000 tons to meet diverse industrial needs.
Papermaking Chemical Additives are a one-stop functional auxiliary series developed specifically for modern neutral/alkaline papermaking processes, high-speed paper machine mass production, and premium paper quality upgrading. Our core flagship product is our AKD Sizing Promoter, which specifically addresses the industry's critical pain points: slow sizing development, delayed curing, poor water resistance, low paper acceptance rates, and unstable mass production.
The entire product range is manufactured using advanced modified polymerisation technology and is suitable for all paper grades including cultural paper, packaging paper, specialty paper, and food-grade packaging paper. It is perfectly compatible with recycled pulp, high-calcium-carbonate filling systems, and high-speed continuous papermaking conditions. It is an essential chemical raw material for paper mills seeking quality improvement, efficiency enhancement, energy savings, and premium paper grade upgrades.
Traditional AKD sizing processes commonly suffer from critical shortcomings: slow reaction between AKD and cellulose fibres, long curing cycles at ambient temperature, susceptibility to hydrolysis and loss of effectiveness, and rapid decay of sizing degree. These issues easily lead to uneven water resistance, excessive Cobb water absorption values, ink bleeding during printing, and paper surface wrinkling. These problems are particularly pronounced in high-speed paper machines, high-filler formulations, and recycled pulp production scenarios, directly resulting in rising reject rates, production capacity constraints, and customer returns.
Our AKD Sizing Promoter is specifically designed to overcome these technical bottlenecks. It dramatically accelerates the AKD sizing reaction, shortens curing time, and locks in long-lasting water resistance, adapting to all production conditions. With stable performance, excellent compatibility, and no residual contamination, the product meets domestic and international papermaking environmental standards and food-contact safety requirements. Backed by mature production technology and extensive real-world case histories. It is the preferred choice for global paper mills for long-term procurement, bulk stocking, and process upgrading.
Our AKD Sizing Promoter is a specialised functional papermaking auxiliary developed exclusively for AKD neutral sizing systems and a core supporting raw material for modern high-end papermaking processes. The product features a highly active cationic polymer structure that precisely activates the reactive groups of AKD alkyl ketene dimer, significantly accelerating the covalent bonding reaction between AKD and cellulose hydroxyl groups in pulp. This fundamentally solves industry-wide issues such as slow curing, low initial sizing degree, late-stage decay, and hydrolysis inactivation inherent in traditional processes.
At the same time, it effectively inhibits the free migration of AKD particles, stabilises the hydrophobic surface layer structure, and ensures more uniform and durable water resistance, significantly reducing paper Cobb values and completely eliminating quality defects such as ink bleeding, moisture-induced deformation, and package leakage.
The product offers exceptional compatibility, working perfectly with various AKD emulsions, anionic papermaking auxiliaries, calcium carbonate fillers, and recycled wastepaper pulp systems – without flocculation, precipitation, or adverse effects on pulp drainage or paper forming performance.
It adapts to demanding production conditions including high-speed paper machine continuous operation, low-temperature drying, and high-filling papermaking processes. It significantly shortens the production curing cycle, improves paper machine operating efficiency, and resolves production bottlenecks, reject accumulation, and project delays caused by sizing lag. It is widely used in the production of copy paper, writing paper, book and cultural paper, food packaging board, corrugated packaging paper, carbonless copy paper, medical specialty paper, and all other paper grades.
In actual mass production, most paper mills face three major sizing challenges: first, incomplete AKD curing under low-temperature production and low-speed drying conditions, resulting in substandard water resistance at shipment; second, significantly increased sizing difficulty due to high proportions of recycled pulp and high filler loadings, leading to uneven surface hydrophobicity; and third, continuous decay of sizing degree during finished-goods storage, causing later moisture absorption, water penetration, and deformation.
Our AKD Sizing Promoter solves all these challenges in one go: it rapidly completes low-temperature curing, reinforces sizing effectiveness in high-filling systems, and locks in long-lasting hydrophobic performance, substantially improving finished-product yield rates and storage stability. At the same time, it optimises pulp retention, reduces chemical consumption, and lowers equipment corrosion risk – comprehensively helping mills reduce costs, improve quality, simplify processes, and stabilise mass production.
Significantly shortens the AKD sizing curing cycle, adapts to high-speed paper machine production and low-temperature drying processes, eliminates curing delays and capacity constraints, and dramatically improves mill production efficiency.
Inhibits AKD hydrolysis and particle migration, stabilises the paper surface hydrophobic barrier layer, ensures uniform and non-decaying sizing degree, stably reduces Cobb values, and eliminates rejects caused by ink bleeding, moisture damage, and deformation.
Adapts to all neutral/alkaline papermaking systems, compatible with virgin pulp, recycled pulp, and high-calcium-carbonate filling conditions. Perfectly compatible with various papermaking auxiliaries – no need to modify existing production lines.
Improves paper water resistance, printability, and surface smoothness, helping mills produce premium paper grades. Low addition rate with high efficiency effectively reduces chemical consumable costs and reject losses.
Meets safety standards for food-contact paper, civilian paper products, and industrial packaging paper. Suitable for all paper grades, avoiding quality inspection and compliance risks.
Standardised source manufacturing with high molecular purity, stable activity, and minimal batch variation, completely eliminating quality issues caused by performance fluctuations during mass production.
Ewooan has been deeply engaged in the R&D and production of functional Papermaking Chemical Additives for many years, with a dedicated focus on the precision manufacturing of AKD sizing supporting auxiliaries. We operate standardised chemical production workshops, automated polymerisation production lines, and professional papermaking auxiliary testing laboratories. Every batch of our AKD Sizing Promoter undergoes rigorous testing across more than ten parameters including active content, curing efficiency, sizing stability, pulp compatibility, and finished-paper water resistance indicators. All product data are fully traceable, quality is controllable, and indicators are compliant.
Our products have long served thousands of domestic and international paper mills, paper product manufacturers, and packaging material suppliers, adapting to mainstream neutral papermaking processes and high-speed paper machine equipment worldwide. We have accumulated extensive real-world implementation cases and mature solutions for recycled pulp papermaking, high-filling processes, low-temperature mass production, and high-end food-grade paper production.
We provide comprehensive full-chain professional services: pre-sales process compatibility selection, formulation optimisation, and operational commissioning; in-process full quality control; and after-sales technical follow-up and problem diagnosis. With solid technical accumulation, stable product quality, and rich practical experience, every buyer can select with confidence, produce with peace of mind, and collaborate with ease.
