Wet-end sizing agents are mixed with the paper pulp during the early stages of the papermaking process. Their primary role is to increase the water resistance of the paper fibers themselves. This results in a final product with enhanced strength, durability, and resistance to the penetration of water or other fluids. The importance of wet-end sizing agents goes beyond the basic functionality of the containerboard. By enhancing the water resistance and mechanical strength of the paper at the fiber level, they contribute to the overall performance of the finished containerboard product. This becomes particularly valuable in extreme weather conditions or during long-distance transportation, where maintaining the integrity of the package is crucial.
An ingredient that yields water-resistance at the core
In terms of sustainability, the use of wet-end sizing agents can lead to increased efficiency in the papermaking process. By reducing the absorption of water, they contribute to faster drying times, lower energy consumption, and less waste in the form of damaged goods or rejected batches. This aligns with the industry’s ongoing drive towards improved sustainability and efficiency.
Alkenyl Succinic Anhydride (ASA) technology is added when the paper is being formed in the wet-end (internal size), providing a fast reaction rate with cellulose and develops efficient hydrophobicity in a range of pulp furnishes, such as drywall and gypsum board. As an internal size, ASA has less impact on final product friction properties as compared to Alkyl Ketene Dimer (AKD).
Aurorium is a major manufacturer of maleic anhydride which provides the desired efficiency and consistency in the production of chemistries such as ASA and SMA. Our ASA can be tuned to the wet end chemistry of a paper machine due to the ability to optimize the emulsifier on site and offers 5x lower inventory needed when compared to alternative sizing agents. Learn more about Bersize™ Sizing Agents.
Bersize™ Sizing Agents
- produced in North America and Europe
- excellent shelf life
- greener for transport (no water required)
- suitable for paper grades requiring hydrophobicity
starch modifiers fight grease
paper & packaging takeout you can handle When ordering food to go, we all have experienced a paper bag or food container that has lost its structural integrity from being saturated with grease. This can be prevented by coating the inside of the food takeout container with a starch that stops oil from seeping through. These starches are treated with additives such as Indapro™ 5820 that help stop the bag from becoming soggy and creating a greasy mess.
coating lubricant for visuals that pop
paper & packaging start the day with fun From cartoon characters to miniature games, the outside of cereal boxes provide space to add a bit of fun to the most important meal of the day. Stopping cereal from being crushed, these boxes are designed for high color printing using a lightweight, recyclable material known as cartonboard (sometimes referred to as paperboard). In order for the striking visuals to stand out on supermarket shelves and appear high-gloss, cartonboard boxes are coated with Berchem™ 4136 Lubricant Additives.
