SIWO offers a range of waterborne polyurethane dispersions (PUDs) specially developed for water-based adhesive applications. Our adhesive resins provide excellent flexibility, adhesion, initial tack, and bonding strength for various substrates, including leather, textiles, fabrics, and other materials. With different thermal activation temperatures and performance characteristics, SIWO’s polyurethane adhesives can meet the requirements of a wide range of heat-activated bonding applications.
Explore SIWO’s waterborne polyurethane adhesives designed for heat-activated bonding applications. Our adhesive PUDs offer excellent flexibility, adhesion, initial tack, and bonding strength for leather, textiles, fabrics, and other substrates, including paper, plastics, films, and composite materials. Different grades provide different thermal activation temperatures and bonding characteristics to meet a wide range of industrial and consumer product assembly requirements.
SiwoPUD®-U-654 is a high-performance crystalline waterborne polyurethane adhesive designed for heat-activated bonding applications. With a solid content of 50±1% and a low thermal activation temperature of 55–60°C, U-654 offers excellent initial tack, strong adhesion, and high bonding strength. It is suitable for bonding leather, textiles, fabrics, and other compatible substrates. Its good compatibility with most waterborne resins, including slightly acidic systems, makes it a versatile solution for water-based adhesive formulations.
SiwoPUD®-U-658 is a high-performance crystalline waterborne polyurethane adhesive designed for heat-activated bonding applications. With a solid content of 50±1% and a minimum thermal activation temperature of 70–80°C, U-658 provides excellent initial tack, strong adhesion, and high bonding strength. It is suitable for bonding leather, textiles, fabrics, and other compatible substrates. Its compatibility with most waterborne resins, including slightly acidic systems, makes it a versatile choice for water-based adhesive formulations requiring reliable bonding performance.
SiwoPUD®-U-678 is a high-molecular-weight anionic waterborne polyurethane dispersion developed for heat-activated adhesive applications. It offers excellent adhesion, initial tack, flexibility, anti-blocking performance, and bonding strength across a range of substrates, including fabrics and leather. Compared with U-658 and U-674, U-678 provides improved hydrolysis and aging resistance. For applications requiring enhanced high-temperature bonding performance, adding 2–5% water-dispersible polyisocyanate crosslinker (EC-600) can further improve bonding strength. U-678 is suitable for high-performance waterborne adhesive formulations.
SiwoPUD®-U-678 is a high-molecular-weight anionic waterborne polyurethane dispersion developed for high-performance heat-activated adhesive applications. It offers excellent flexibility, adhesion, initial tack, anti-blocking properties, and bonding strength, making it suitable for bonding fabrics, leather, and other compatible substrates. Compared with U-658 and U-674, U-678 provides improved hydrolysis resistance and aging resistance. For applications requiring enhanced high-temperature bonding performance, adding 2–5% water-dispersible polyisocyanate crosslinker (EC-600) can further improve bonding performance. U-678 is an excellent choice for manufacturers seeking reliable performance in waterborne polyurethane adhesive formulations.
SiwoPUD®-U-679 is a high-performance, non-crystalline aliphatic polycarbonate waterborne polyurethane dispersion developed for heat-activated adhesive applications. It offers excellent flexibility, adhesion, initial tack, anti-blocking performance, and bonding strength for applications involving fabrics, leather, and packaging materials. Compared with U-658 and U-676, U-679 provides improved hydrolysis resistance and aging resistance. With a high thermal activation temperature of 130–140°C or above, it is suitable for demanding bonding applications requiring strong adhesion and reliable performance. Adding 2–5% water-dispersible polyisocyanate crosslinker (EC-600) can further enhance high-temperature bonding performance.
SiwoPUD®-U-674 is a non-crystalline aliphatic polyester waterborne polyurethane dispersion developed for heat-activated adhesive applications. With a solid content of 48–50%, U-674 offers excellent flexibility, adhesion, and bonding strength, making it suitable for bonding leather, textiles, fabrics, and other compatible substrates. It also provides good performance in semi-dry and wet bonding applications. For improved heat resistance and high-temperature bonding performance, adding 2–5% water-dispersible polyisocyanate crosslinker (EC-600) is recommended. U-674 is a versatile choice for manufacturers seeking flexible, high-performance waterborne polyurethane adhesive solutions.
SiwoPUD®-U-1529 is a high-performance aliphatic specialty polyester waterborne polyurethane dispersion developed for heat-activated adhesive applications. With a solid content of 45±1%, U-1529 offers strong adhesion, high bonding strength, excellent dry-film properties, and strong anti-blocking performance. It is designed for demanding bonding applications, particularly in automotive interiors and magnetic card manufacturing. Its high thermal activation temperature and improved heat resistance make it a suitable choice for manufacturers seeking durable, high-performance waterborne polyurethane adhesive solutions.
SiwoPUD®-U-676 is a non-crystalline aliphatic polyester waterborne polyurethane dispersion developed for high-performance heat-activated adhesive applications. With a solid content of 48–50%, U-676 offers excellent flexibility, adhesion, and bonding strength, making it suitable for bonding leather, textiles, fabrics, and other compatible substrates. It provides good performance in semi-dry and wet bonding applications and features a higher thermal activation temperature for demanding bonding processes. For improved heat resistance and high-temperature bonding performance, adding 2–5% water-dispersible polyisocyanate crosslinker (EC-600) is recommended. U-676 is a versatile solution for manufacturers seeking reliable waterborne polyurethane adhesive performance.
SiwoPUD®-U-100 is an amorphous aliphatic polyether-ester waterborne polyurethane dispersion developed for adhesive applications. With a solid content of 50±1% and a thermal activation temperature of 100–110°C, U-100 forms a soft, highly elastic adhesive film with excellent flexibility and bonding performance. It is suitable for bonding leather, textiles, fabrics, and elastomers. Its flexibility makes it a versatile choice for manufacturers seeking waterborne polyurethane adhesives for applications requiring soft, elastic bonding layers.
High-performance polyurethane dispersions backed by consistent quality and technical support
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