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Polyurethane pultrusion (PU) technology using fibreglass as a strengthening agent has found its way into a new line of applications.
Inline Fiberglass Ltd. of Toronto, Canada, is using the technology with Bayer MaterialScience’s LLC new Baydur PUL 2500 polyurethane resin to provide new offerings for the window frame manufacturing industry – and is exploring a variety of new applications in other industries as well. The new PU pultrusion technology allows Inline to manufacture window lineals that they say are vastly superior to their aluminum, wood and vinyl counterparts. Bayer MaterialScience developed the new grade of Baydur resin specifically for these pultruded polyurethane applications.
According to Stanley Rokicki, founder and chief engineer of Inline Fiberglass, conventional pultrusion technology has been around for decades. Inline began to develop fibreglass pultrusion capabilities in 1989, and started manufacturing with polyester resin in 1992. Now, Inline is pioneering the production of window frames using an innovative polyurethane pultrusion process. By pultruding polyurethane resin, Inline can now produce larger, stronger parts, with thinner walls.
“The fact that we now have the capability to produce lighter profiles that are strong enough to be used in large frames, even curtain walls, is extremely exciting for us. And they’re cost-effective and environmentally friendly, making this a technology we will continue to rely on,” said Rokicki. “From my perspective, Bayer was the only company with the knowledge, experience and resources to bring this about.”
“Bayer MaterialScience not only invented polyurethanes, but we also invented their first applications and we continue to be innovators in the industry today,” said Harry George, business manager, Specialty RIM and Composites for Bayer MaterialScience. “For decades Bayer MaterialScience polyurethanes have stood the test of time, serving as the foundation for materials technology like the polyurethane pultrusion process, making polyurethanes technology truly ‘forever young’.”
Bayer says that frames made from pultruded polyurethane also have excellent expansion and contraction properties, and can withstand every weather condition, from arctic blasts to desert heat and seaside moisture, without corroding. They can be painted, or finished to look like wood.
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