H.B. Fuller Adhesive Earns Fire Safety Rating for Door Assembly

Window & Door
May 28, 2013

H.B. Fuller Co., with U.S. headquarters in St. Paul, Minn., announced the introduction of the Swiftlock 2U232-3N, a UL 10C fire-rated component status adhesive designed to help door manufacturers improve production while meeting industry certification and fire rating requirements. Swiftlock 2U232-3N is a polyurethane hot-melt adhesive used in the high-speed assembly of fire-resistant steel entry doors on a variety of door core materials, including EPS and both faced and un-faced honeycomb. Swiftlock 2U232-3N has a three-hour burn rating, which is one of the most difficult ratings to achieve, according to the adhesives supplier.

With the addition of Swiftlock 2U232-3N, H.B. Fuller offers a family of six fire-rated component status adhesives. The Swiftlock 2U232-3N adhesive meets the Underwriters Laboratories 10C standard for Positive Pressure Fire Tests of Door Assemblies. Five of the six adhesives bear Intertek’s Warnock Hersey Mark.

Swiftlock 2U232-3N polyurethane hot melt adhesive has a high-tensile strength, which helps to ensure that a door is durable and designed to withstand a variety of external conditions, the supplier reports. Due to its low 250°F application temperature, Swiftlock 2U232-3N adhesive also can positively impact the manufacturing process by offering low application energy requirements.