| Résumé : |
In the roofing industry, application methods are limited for applying rapid-cure materials. To start, rapid-curing sealing membranes are delivered in 200-l drums. This container volume is often too large for most touchup and small project applications. In addition, the setup time for the standard rapid-cure material application method—plural-component spray system (hot spray)—is both time consuming and cost prohibitive for smaller projects. Due to high equipment costs and high levels of coating waste, rapid-cure coatings are often not used by applicators. To combat these challenges, roofing companies use polyurethane (PU) coating systems for small and touchup applications. However, PU coating systems have issues as well.
The standard kit size for a PU coating system is 40 l. Smaller kits for touchup are often not available. In addition, the mixing and metering of the coatings used in a PU coating system are performed at the construction site, which brings a high risk of failure. Since most PU coatings cure in 5-30 sec, PU touchup applications usually require the use of a plural-component spray system, which features a long setup time and can be expensive. |
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Applying rapid-cure adhesives with a meter/mix/dispense system in ADHESIVES & SEALANTS INDUSTRY (ASI), Vol. 25, N° 8 (08/2018)
