Elvanol 75-15 Polyvinyl Alcohol

In the textile industry, the sizing process directly determines weaving efficiency, yarn breakage rate, and the stability of subsequent processing. With the widespread adoption of high-speed looms, shuttleless looms, and environmental regulations, traditional sizing systems are gradually revealing limitations in terms of operability, recyclability, and overall cost. Due to its excellent film-forming properties, adhesion, and recyclability, Polyvinyl Alcohol (PVA) has long been a core material in textile sizing systems. 1. Core Performance Requirements of PVA in Textile Sizing In the textile sizing process, the role of the sizing agent is not only to increase yarn strength but, more importantly, to maintain stable operation under high-speed weaving conditions. Ideal PVA sizing agents typically need to meet the following key requirements: Good film strength and flexibility: Forming a uniform and continuous protective film to reduce yarn fuzz and improve abrasion resistance. Moderate solution viscosity: Maintaining good fluidity even at high solid content, adapting to high-speed sizing. Easy desizing: Effectively removable at lower temperatures and water consumption during the finishing stage. Low foaming and low corrosiveness: Reducing equipment maintenance frequency and improving continuous production stability. Elvanol series of PVA (such as Elvanol 75-15 Polyvinyl Alcohol) , through optimization of molecular structure and viscosity grades, allows different models to precisely match the above requirements. 2. Practical Advantages of Elvanol T Series in High-Speed ​​Weaving In textile applications, PVA Elvanol T-25 and Elvanol T-66 are typical PVA grades specifically developed for sizing processe. Elvanol T-25 This product is a low-foaming copolymer polyvinyl alcohol, widely used for warp sizing of polyester-cotton blended yarns and other short-staple yarns. Its main advantages include: Maintaining good weaving performance even in low-humidity environments, reducing downtime. When compounded with starch, it can significantly reduce the overall sizing amount, reducing loom shedding. Not prone to mildew and non-corrosive, facilitating long-term stable operation of equipment. Can be desized directly with hot water, without relying on enzyme preparations, reducing operating costs. In actual factory applications, T-25 is often used in traditional sizing systems that prioritize stability and versatility. Elvanol T-66 Compared to T-25, T-66 has a lower solution viscosity and is specifically designed for medium-to-high pressure sizing machines and high-speed shuttleless looms: It maintains good fluidity even at high solid content, suitable for high-speed sizing. It offers excellent yarn separation, enabling a "100% PVA" formulation to improve weaving efficiency. It is easier to desize, allowing for effective cleaning at lower temperatures and water flow rates. The low viscosity of the recovered sizing solution facilitates the operation of ultrafiltration recovery systems. For modern textile enterprises pursuing high productivity and high recovery rates, T-66 offers significant advantages in overall cost control.   3. The Value of PVA in Desizing and Sustainable Production With increasingly stringent environmental regulations, the recyclability of sizing agents and wastewater load have become important considerations for textile companies. Compared to some natural or modified starch sizing agents, PVA offers advantages in the following aspects: Low BOD/COD characteristics: Helps reduce wastewater treatment pressure. Recyclable and reusable: PVA recovered through ultrafiltration systems can be reused for sizing. Stable solution performance: The recovered sizing solution has low viscosity and is easy to pump, facilitating continuous production.   Elvanol series of PVA was designed with industrial recycling and reuse scenarios in mind, ensuring that it not only meets process performance requirements but also aligns with the long-term goals of water conservation, emission reduction, and cost reduction in the textile industry. The Elvanol series of polyvinyl alcohol provides reliable options for different types of looms and yarn systems through its differentiated viscosity design, excellent film-forming properties, and good desizing and recycling characteristics. Choosing the appropriate PVA grade can not only improve weaving efficiency but also significantly reduce overall costs in the long run.   Website: www.elephchem.com Whatsapp: (+)86 13851435272 E-mail: admin@elephchem.com