Products in the Aquazym® family effectively break down and remove starch-based sizing agents. They're available in a range of concentrations. Oxidative desizing methods can negatively affect the cellulose. Aquazym® products only target the starch, so don't impact the fabric strength.
Starch is the most common sizing agent in textile manufacturing. Amylases target and break down starch without harming the yarn. The result is highly efficient and effective desizing.
Textile manufacturers use a process called sizing to aid the weaving process. Size forms a coating on warp yarns. This coating helps them to withstand tension during weaving and reduce breakage. Once this process is complete, the textile needs to go through a desizing process. Desizing removes the coating before bleaching or dyeing.
For more than a century, starch has been the most common sizing agent for fabrics. Textile mills use amylase enzymes to desize woven fabrics. That's because of their highly efficient and specific action. They desize the yarn without harming it.
Starch molecules are formed of long chains of sugars. That makes them difficult to remove from the yarn. Amylases break long-chain starch molecules into short-chain dextrins. The short-chain dextrins are much easier to remove, which results in more efficient and complete desizing.