Linetec adds 90-degree strut thermal improvement capabilities

90-degree thermal strut in a single step

90degree-strut-Schmidlapp-Close-Up-(3)Linetec is one of very few companies in North America to provide 90-degree thermal strip with a single pass using Technoform Bautec’s polyamide insulating strips and Müller Technologies AG’s knurling equipment to install the strip simultaneously on two planes of material,” explains Bart Hensley, sales engineer at Technoform Bautec.

The need for direct access from both sides has always been a design limitation of strip systems. This new capability frees up window and curtainwall designers to detail changes in place more efficiently, using a single assembly, rather than multiple pieces – without compromising energy efficiency or condensation resistance.

When installing thermal strip, Linetec follows the requirements of AAMA QAG-2-12, “Voluntary Quality Assurance Processing Guide for Polyamide Thermal Barriers.” First, the inside and outside aluminum profiles are finished in anodize, liquid paint or powder coating. Different colors and finishes may be used on each profile as the aluminum is extruded independently with a cavity that will receive the strip.

90degree-strut-extr              90degree-strut-equip

During the assembly process, knurling produces “teeth” in the aluminum pocket that “bite” into the strip and ensures appropriate shear strength of the composite profile. As material passes through the knurler, the strip is inserted into the extrusion cavity. The crimping process mechanically locks the aluminum and strip, forming the bond between the two extrusions and the strip.

Traditional 90-degree thermal strip installation was time-consuming where each piece is knurled up to three times before crimping and shear testing. This amount of handling increases the potential for marring and damage to the finished material. This new 90-degree thermal strip process employed by Linetec’s  reduces the knurling to one step. This not only saves time and labor, but also minimizes inconsistencies and waste, holds customer-specified tolerances for U-Factor and shear testing, and delivers a high-quality finished product.

Stretch Forming by Linetec now available

Aluminum finishing, curving and thermal improvement services all provided at a single location

As building projects continue to push the limits in vision and design, Linetec continues to expand its value-added services. Linetec will soon offer stretch forming, which allows architectural product manufactures to have their metal building components curved and finished in one location.

SSFF-bending-project-photo“Customers needing material to be curved can send the parts to Linetec or have it pulled from their material stored and managed in Linetec’s inventory program. This offers customers quick-turn bending services. Utilizing the company’s dedicated fleet of trucks ensures the finished, curved material, along with the rest of the project, arrives free from damage, on schedule and backed with an industry-leading warranty

Stretch Forming by Linetec alleviates the worry and hassle of multiple points of contact and brings tremendous value. Customers can ship us their aluminum for bending and then, have it finished in the same place to retain the full finish warranty. This saves shipping costs and transit time, as well as reduces material handling and packaging to minimize the opportunity for damage.

To deliver the new stretch forming services, Linetec has teamed with Southern Stretch Forming. Southern Stretch is headquartered in Texas with production facilities in California and Pennsylvania. The company will provide a full scope of bending capabilities on Linetec’s campus in Wausau, Wis., including annealing and tempering to soften and harden aluminum. Facility site preparation, equipment deployment and other logistics are underway.

When we realized stretch forming would be of benefit to customers, we sought out a partner with an equal reputation in their industry; a quality company with a strong reputation for customer service and reliability. We are glad to have Southern Stretch Forming  as that partner.”

Southern Stretch Forming’s president, David Arthur, notes that the feeling is mutual, “We have very high regard for Linetec and are pleased to have established a strong collaborative relationship with their team.”

Arthur explains, “In simplest terms, stretch forming is a way of bending metal into a desired shape, usually curved, by heat treating it then pressing it over a die. Stretch forming turns a straight aluminum extrusion into a vital component of contemporary structures — a hotel skylight, a mall archway or a skyscraper’s glass and metal facing. Stretch forming frees architects, designers and builders to realize forms as graceful as they are sturdy and functional.”

Expanding services to enhance architectural metal components is nothing new to Linetec. We continually invest in these innovative, value-added services to support our customers’ short-term needs and long-term goals.

For more information about Stretch Forming by Linetec, finishing and other services, please call 888-717-1472 or visit www.linetec.com.