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A leading supplier of custom-made, high-end garage doors based in Orange, CA, specializes in building "coach-house" doors with elegant designs dating from the 1920s, combining distinction with durability. Many have windows across the top in pleasing shapes and patterns. Depending on the customer's desire, the facing can be copper, brushed aluminum, coated steel, composite or a wood, such as oak, alder, or cedar. Some doors have a polystyrene core for insulation. For reliable, quiet, rust-free operation, only the best hardware is used. Although these doors are typically extra wide, they can be built to any dimensions. They are sold through independent professional installers across the United States.<
"It took us a while to find it," he recalls. "We tested about a dozen less-expensive glues first. They couldn't handle repeated exposure to heat or cold. We needed something better."
It was then that Tom Post, Devcon regional manager, made a fortuitous cold call, asking a man in the company's parking lot whom he could talk to about adhesives. The man turned out to be the manager, and the adhesive-testing period was under way. After a brief tour of the shop, Post left a sample of Plastic Welder II with the manager, who shortly thereafter was ordering 50-ml cartridges of the two-part methacrylate every week.
"We now build all our coach-house doors with Plastic Welder II," says the manager. "It's easy to apply, it sets up quickly but not too quickly, and it holds up under temperature extremes. We use it for attaching panels to the frame and to other panels, and for constructing the panels themselves. A panel can have several layers, and Plastic Welder II works equally well for bonding composite materials to each other, steel to steel, or even wood to composite to steel to plastic to steel again - from the outer skin to the inner skin and everything in between.
Ideal for outdoor applications, Plastic Welder II is particularly resistant to weathering and UV light. In addition to standard plastics, it bonds nylon, nylon-containing alloys, modified polyesters, epoxy composites, metals, fiberglass and wood. Available in several colors and packaging choices for a range of OEM assembly applications, the adhesive requires little or no surface preparation (no sanding or grinding of composites). With a mixed viscosity of 56,000 cps, it will not run or drip when used on vertical or inverted surfaces. Working time is 5-10 minutes. Because it is 100% reactive, VOC emissions are very low. Plastic Welder II attains functional cure in 2-4 hours. Its load-bearing bonds are resistant to wide variations in temperature (-40° to 250° F). It has high tensile and shear strength, and superior impact and peel resistance.
Pleased with the results he had obtained with handheld dispensers and cartridges of Plastic Welder II, the garage door company manager began buying the adhesive in bulk - two 55-gal drums (resin and activator) at a time - and dispensing it with a portable meter-mix system.
"The bulk kits are more cost-effective," he explains. "Devcon has been helpful and supportive, but I chose Plastic Welder II strictly because of its superior performance. It's a matter of quality. For an ordinary garage door, an ordinary adhesive will do. But we produce extraordinary doors, so we use an extraordinary adhesive."