Volume 41, Issue 11 - November 2006

GANA Profiles 2007

GANA: Working for the Good of the Industry

The growth, development and advancement of the glass industry are top priorities and concerns for GANA. Dedicated members have spent countless hours in technical meetings, on conference calls, writing and re-writing documents all with one common goal: to better the industry. GANA has published numerous bulletins, documents, standards, manuals and more that are available as references and resources to the industry. The next two pages detail the development of some of these resources created by GANA. To learn more about them visit www.glasswebsite.com.

Ball Drop Test Method
The Standard Test Method for Ball Drop Impact of Laminated Architectural Flat Glass was developed by GANA’s laminating division as a method for testing architectural laminated glass.

“The cost to perform the standard Consumer Products Safety Commission [CPSC] testing was a major consideration,” says Solutia’s Julie Schimmelpenningh, who serves as the GANA president and chairperson of the task group that developed the test method. “GANA believed that if we provided a more economical and easier quality control method for safety glazing that many more manufacturers would institute it on a more consistent and routine basis, thereby improving the overall reliability of products from the glazing industry.”

Before the ball drop test method was developed, fabricators faced a number of challenges when testing safety glass.

“The biggest challenge was in the frequency that tests were run. Although many of the independent companies were running tests on a routine basis, not all were conducting tests at a preferred frequency,” says Schimmelpenningh. “This test method and specification provide an opportunity for the tests to be run on a more frequent basis so better quality control can be provided.

“Developing the test method involved researching other test methods used throughout the world and determining which ones best fit the practice of North American laminators. After that was determined, the next precedence was outlining a practice that was easy to use and not cumbersome on material production,” says Schimmelpenningh. “The goal, however, remained unchanged throughout the development: to determine an easy-to-use, reliable test method that would provide adequate results based on the performance of safety glazing to the act of human impact.”

With work ongoing, results so far look positive. “Preliminary results show that the test is easy to perform and repeatable. The results seem to correspond well with our expectations of the shot bag testing and we expect that further studies will strengthen the correlation,” adds Schimmelpenningh.

GANA has been actively working on developing this test method and specification for approximately 18 months. The group also continues to work on an industry specification that correlates the ball drop method with the CPSC 16 CFR 1201 shot bag method. 

Center Punch Fragmentation Test Method
GANA has recently developed the Standard Test Method for Center-Punch Fragmentation of Fully Tempered Flat Glass. Prior to its development, heat-treated glass fabricators were testing fully tempered glass in accordance with safety glazing standards ANSI Z97.1 and/or CPSC 16 CFR 1201. An additional industry-recognized procedure that would allow for more frequent evaluation of fully tempered glass products was needed. 

“For years, heat-treated glass fabricators have been breaking production samples by means other than the ANSI and CPSC standards in order to evaluate the break pattern of production glass quickly,” says Greg Carney, GANA technical director. “The development of the formal test procedure provides the industry with a recognized standard procedure with detailed requirements for testing and evaluation.”

Carney adds that, “It is extremely important to note that the GANA procedure provides fabricators a good, in-house quality assurance test method. However, it is not a substitute for the safety glazing test requirements of ANSI Z97.1 or CPSC 16 CFR 1201; fabricators must also comply with the safety glazing standards.”

The association’s efforts began when the tempering division’s standards and engineering committee surveyed member companies regarding their production sample fragmentation practices. That input was then used to develop the test method, which was approved through a consensus standard process. The development of the test method took approximately 18 months.

Since its completion, the test method has been referenced by the Safety Glazing Certification Council as a good practice for production quality assurance programs. 

“In general, the easy-to-use quality assurance procedure results in more frequent evaluation of production samples and helps fabricators ensure proper production practices,” says Carney. He says there are also plans for further usage of the test method. 

“We anticipate that the test method will be considered by the Accredited Standards Committee for incorporation or reference as they update the current American National Standards Institute (ANSI) Z97.1 American National Standard for Safety Glazing Materials Used in Buildings - Safety Performance Specifications Method of Test ANSI Z97.1-2004.”

Roll Wave Test Method Development
Roll wave distortion is imparted upon horizontal heat-treated glass while the glass is transported through the furnace on a roller conveyor. These “waves” result in distortion when the glass is viewed in reflection. For GANA, the issue was one that needed to be addressed.

“Our businesses are market-driven and sensitive to customer expectations and, while safety is first and foremost when dealing with heat-treated flat glass products, aesthetics are also important to our customers and member companies,” says Ren Bartoe of Vesuvius McDanel, former chairperson of the GANA tempering division, roll wave subcommittee. “GANA accepted the challenge to address distortion in heat-treated flat glass products to quantify industry capabilities, while respecting safety standards.”

According to Bartoe, prior to GANA’s involvement, the use of heat-treated glass products in both commercial and residential applications was increasing, as was sensitivity to optical distortion.

“As coated and energy-efficient glass products were introduced, the issue of distortion was elevated,” he says. “There were no industry standards on distortion and no consensus on how to measure it so each company was left to address the issue individually. GANA provided the platform to address distortion scientifically, and to consider the mutual interests of the consumer and the fabricator.” 

The subcommittee was formed in 1998 and immediately began to ascertain the capabilities of heat-treating equipment, as a task force was also formed to define roll wave distortion and how to measure it. Measurement equipment and techniques were prescribed and round robin testing and sampling began. 

In 2005, the subcommittee published the Standard Test Method for In-Plant Measurement of Roll Wave in Heat-Treated Architectural Glass and remains active, though that same year it was renamed the optical distortion subcommittee, and is now chaired by Joel Feingold of Strainoptics. This subcommittee has expanded the work on roll wave distortion to address optical distortion at a comprehensive level. 

Having this test method has also led to a number of benefits.

“Glass tempering furnace technologies were developed and refined with a sensitivity to maintaining flatness in heat-treated glass products,” says Bartoe. “Awareness to ceramic roll properties was raised and resulted in process improvements to stabilize roll bow at tempering temperatures. An entire industry has evolved around measuring optical distortion in flat glass products with the development of optical, digital, laser and other systems designed to provide real-time feedback.”

GANA Products 2007

Products on Display: The Latest from GANA Members

As you’ve already read on pages 64 and 66, GANA is continually working to improve and advance the glass and glazing industry. So, too, are its members. On these three pages you can read about some the latest and greatest developments from some GANA members. Companies were invited to submit information about new products to be featured here in our Showcase department, which, for the first time ever, is exclusive to GANA member companies only.

Arch Adds on to Resistor Line of Impact Products
Arch Aluminum & Glass Co. Inc. of Tamarac, Fla., has introduced the latest addition to its Resistor impact program with the debut of the Resistor Security BR 3100 III (BR 3100 III). 

The new product is a patent-pending, bullet-resistant system that features an insulating glass unit and accompanying framing. The BR 3100 III has tested to GSA level 3 when shot at with a .44 Magnum.

In addition to the BR 3100 III bullet-resistant system, the company’s Resistor line features hurricane, bomb and seismic impact systems. 

Proven Protection for Mirrors from Binswanger
Binswanger Mirror Co., part of Vitro America, is celebrating ten years of success this year with its ScarGard surface protected mirrors. The application process was developed by the company’s engineering team in Grenada, Miss., and now a second generation of the product, ScarGard2, is available. 

According to the company, ScarGard2 is a chemical treatment that is used to transform naturally porous glass surfaces into hard, smooth surfaces. The molecular surface of the glass is so slightly affected that it can be cut as easily as unprotected glass, according to the company.

CRL Introduces New Stacking Partition System and Catalog
Los Angeles-based C.R. Laurence Co. Inc. (CRL) has designed, engineered and manufactured a Stacking Partition System (SPS) for moveable all-glass walls and partitions. According to the company, with this system glass panels can be stacked against an end wall or stored out of sight in a “parking closet.” Glass panels are suspended from an overhead track by Intelli-Track rollers that provide directional control and smooth, easy movement. 

The SPS utilizes the company’s patented Wedge-Lock™ glass securing system to secure top and bottom door rails. 

In addition, CRL has introduced the third in a series of five hardcover, full-color Master Catalogs, the “CRL63 ARCH” Architectural Hardware Catalog. The catalog contains 776 pages of architectural hardware products, many of which are manufactured by CRL. The new addition joins “CRL53 G&G,” which features glass hardware, tools and supplies and “CRL43 AGR” for the automotive glass trade.

GANA Releases Suggested Procedures for Dealing with Broken Glass
The Glass Association of North America (GANA) has released the eleventh and latest in a series of Glass Information Bulletins aimed at providing technical information and education to consumers and the architectural fenestration industry. The newest bulletin, Suggested Procedures for Dealing with Broken Glass, focuses on the importance of safety considerations and prompt glass replacement in the event of breakage.

“Breakage of architectural glass can occur for a number of reasons and in each case creates conditions that pose a risk of injury and property damage,” explained Greg Carney, GANA technical director. “The bulletin explains that even if broken glass remains in the opening, there has been a reduction of strength and immediate replacement is needed.”

Clear Light with Cardinal’s Latest Low-E
Cardinal CG Co. of Minneapolis has introduced a high-performance, energy-efficient coated glass called LoE3-366, which has a solar heat gain coefficient of 0.27 and is virtually clear, with a visible light transmittance of 66 percent.

The company’s research and development group incorporated a third layer of silver to create LoE3-366. The result is a coating that works in every geographic location, delivering maximum performance and minimal exterior reflectance with high visible light transmittance, according to the company. 

Bend and Temper with Glasstech
The Cylindrical Radius Bending and Tempering System (CRBA™) and the Advanced Bending and Tempering System (ABTS™) are two of the latest products from Perrysburg, Ohio-based Glasstech.
 
The CRBA can bend and temper large glass parts, including shower doors, room dividers and exterior building panels as well as large, cylindrical, symmetrical and asymmetrical sidelites for buses and trains. 

In addition, Glasstech says its ABTS allows users the freedom to create curved glass elements for buildings, display cases, shower stalls and furniture from clear, tinted or coated glass. The ABTS bends range from “S” curves to those with a constant radius.

Naturalite Announces New Gravity-Operated Heat and Smoke Vents 
Naturalite Skylight Systems, part of the Vistawall Group in Terrell, Texas, has introduced a new gravity-operated heat and smoke vent, which has been tested and certified by Factory Mutual for use with Early Suppression Fast Response (ESFR) sprinkler systems. With the Naturalite gravity-operated heat and smoke vent, a cable release system that supports a 360-degree F fusible link is designed to control the temperature at which venting occurs. 

PPG Launches Four New Glass Products
Pittsburgh-based PPG Industries recently introduced four new products. 

Solarban® 70XL features a combination of high visible light transmittance and solar control performance with a clear glass appearance. 

Solarban® z50 glass offers a “soothing” steel blue-gray tint along with the performance advantages of a Solarban solar control, low-E coating. 

Extra-heavy Starphire® ultra-clear glass is also now available in 16- and 19-millimeter thicknesses, and Vistacool™ Caribia® and Vistacool™ Solargray® are two new subtly reflective, color-enriched glasses. 

SAFTI FIRST™ Receives U.S. Patent for Superlite I-W 
San Francisco-based SAFTI FIRST Fire Rated Glazing Solutions has earned a U.S. patent for its SuperLite I-W. The patent covers any filming of wired glass, either applied at the manufacturing plant or in the field, to create a fire- and impact safety-rated product.

The company says SuperLite I-W is the only safety wired glass product that meets CPSC 16CFR 1201 Category I and II and also passes NFPA 252 and 257. 

A New Tempering Technology from Tamglass
According to Tamglass, the Sonic, its latest convection technology, offers glass temperers a quality end-product, especially with soft coats and thick glass, thanks to the use of high convection. Compared to other tempering lines, the company says the Sonic provides more true convection, with six external recirculating boosters in a single bay. Sonic’s patented profiled convection with fine infrared heating resolution allows profiling radiation and convection to evenly heat glass loads based on sizes and layouts. The Sonic produces up to 60 percent more glass that is measurably flatter with less roll wave distortion than conventional furnaces, according to the company.

New VRE-59 Coating Makes High-Profile Debut
The new Solarscreen™ VRE-59 insulating glass is the newest addition to the line of Viracon Radiant Low-E (VRE) products. 

VRE-59 combines a neutral appearance with a light transmittance of 59 percent. The coating was selected for use on the Seven World Trade Center project in New York due to its ability to deliver a crystal-like appearance, while contributing to the overall energy requirements for the building’s LEED-GOLD- CS designation, according to Viracon.

Wausau Introduces New Terrace Door Line
New to the Advantage by Wausau line of competitively priced, pre-engineered products is the TD-4250i terrace doors. Both in-swing and out-swing models feature 4.5-inch frame depths, matching popular sightlines and configurations. The Insulbar® barrier enhances thermal performance, while a single, European-styled handle triggers multi-point locks. It is also AAMA-rated as an ATD-AW60 for single leafs and ATD-AW50 for a double-leaf door. 

Windows, Doors and More: New from Kawneer
Several new products have recently been introduced by Kawneer of Norcross, Ga.

Included in the company’s new line up is the AA900 ISOWEB® window, which features a polyamide thermal break, providing low thermal transmittance, high condensation resistance and eliminating dry shrinkage. According to the company, the window features a unique corner joinery that creates mitered “picture frame” corners and consistent sightlines. Window hardware attachment is simplified with Euro-Groove mounting, according to the company, and adjustable, multi-point locking hardware adds to user convenience and increases product performance. 

Also new is the AA3900 thermal sliding door, which features a mitered panel design and frame marked by clean sightlines and contemporary styling. The door also has corrosion-resistant hardware for easy operation and safety and security for building occupants. It, too, features the ISOWEB polyamide thermal break. 

For safety, security, style and controlled user access, Kawneer has also introduced the Paneline® EL (electric latch) exit device. Combining the Paneline with the technology of a keypad, card reader or biometric scanner, Kawneer says it has created a device that provides total access control that can be either integrated into a building access control system or act as a stand-alone system. 

New Technologies Available from Edgetech
In addition to offering its Super Spacer products, Edgetech I.G. Inc. of Cambridge, Ohio, is now the North American sales agent for a number of technologies. 

One such product is the UVEKOL® A glass laminating system from Cytec Surface Specialties (also a GANA member) that enables companies of all sizes to laminate their own glass safely, consistently and VOC-free using low-intensity ultraviolet light for fast curing. 

Also available from Edgetech is the Form8tor® vinyl profile bending system. The system features a patented tri-rotational technology that allows up to eight bends to be produced at any time. 

In addition, the company is offering Eco Coat (another GANA memeber), a temporary coating that can be applied to the glass and frame to protect against construction debris. An environmentally sound product, the company says Eco Coat is simple to apply and evenly covers every part of the window and frame at the time of manufacture, and can be easily removed when construction is complete.

USG
© Copyright 2006 Key Communications Inc. All rights reserved.
No reproduction of any type without expressed written permission.