Show Notes
Bret Tollgaard, president at Sunrez, joins to discuss faster UV blade repairs, new leading edge materials, and growing OEM approvals. Reach out to [email protected] to learn more!
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Allen Hall: Brent, welcome back to the program.
Bret Tollgaard: Appreciate you having me back on.
Allen Hall: There's been so much happening in the world of UV prepregs and UV adhesives over the past year. Particularly on LinkedIn, I've seen numerous repairs which have used your material, SunRes material, to fix some pretty decent, uh, blade problems.
Are you seeing, just seeing a, a much wider adoption now that everybody has basically agreed that UV is the way to go?
Bret Tollgaard: I, I really do think that it's starting to become one of the go-to standards for a variety of repairs in the wind market. And yeah, it's great to see both our prepregs and lights being used all over LinkedIn, showing the [00:01:00] capabilities of the materials and how happy customers are to use and adopt the materials.
Allen Hall: Yeah. The UV materials are, are getting adopted by OEMs. A lot of ISPs, a, a lot of operators now have it as a standard practice to use UV cured materials just because of the speed and the time that is saved. Uh, it's, it's remarkable how much time you're saving, because the, the real kicker right now if you're trying to do a repair, even in the summer months, let's just say it's warm outside and the temperatures are right and it's calm winds, you're saving multiple hours per repair.
What generally... How much time are you generally saving on a kind of a, quote unquote, "standard blade repair"?
Bret Tollgaard: More and more time, actually, with each session. So we might be saving 50 upwards of 80% of the labor of a traditional epoxy repair. Um, what we've been training companies to do more and more frequently is to actually pre-consolidate the entire repair patch downtower, whether it's in the trailer or inside the tower itself.
Um, and so you can pre-consolidate, get [00:02:00] all the air out in between your layers, have the primer pre-applied to the backside. That way, when you're actually uptower, it's simply peel, stick, roll, and then cure it out with our UV light. Sub 10 minutes, uh, will get you a fully cured part.
Allen Hall: Wow. That's remarkable.
Yeah, when I see those LinkedIn posts from all kinds of operators all around the world using your material I also noticed that the weather conditions may not be pristine like you would have to do with epoxy. So there, there's like a band of temperatures that epoxy systems generally work in. But with the UV material, I'm noticing, I've s- I s- especially over the wintertime, I saw some cold weather repairs going on.
Is there any limitation really to the UV cured patches and materials in temperatures?
Bret Tollgaard: There, there really aren't for the temperature ranges that people will actually be out and installing these. Some of my favorite photos are when it's negative five Celsius outside and everyone's got the big gloves, the big [00:03:00] scarves, the big warmers and everything, and they're applying our prepreg materials, uh, in below freezing conditions and still curing with the same 10-minute cycle time.
Uh, another big advantage of our UV prepregs is everything's already pre-wet out, so you're not uptower with your fiberglass and your resin kicking off an epoxy or even some other, uh, you know, materials out there where it's really hard to impregnate and get that saturation and kick off with UV. And so our prepreg repair patches really lend themselves to
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