The Fenestration and Glazing Industry Alliance (FGIA) has released an updated specification for producing and inspecting polyvinyl chloride (PVC) fenestration products.
AAMA 320-22, Standard and Guideline for Quality Welding, Bonding, and Ventilation of Thermoplastic (PVC) Extrusion Based Fenestration Products, will replace the edition last updated in 2010.
The updated standard provides guidelines for successful welded corners, as well as how to reduce the risk of deformations and malfunctions of products fabricated with extruded PVC profiles due to heat buildup from sun exposure.
Such deformations and malfunctions may include, but are not limited to, organic coated, laminated, cap stocked/co-extruded, and solid-colored profiles. This is especially recommended when darker substrates are used, or in geographic locations with higher levels of solar radiation.
“A wide range of factors occurring in multiple areas of the factory can affect the structural integrity and appearance of welded thermoplastic corners and finished product dimensions and/or squareness,” says Jeffrey Franson, chair of the FGIA Vinyl Material Council (VMC) Corner Break Task Group. “This document’s general guidelines identify methods for inspection and suggested checks and solutions relating to identified quality issues. The user should be certain to always think through the entire production system when reviewing these issues.”
For more information on the updated specification for producing quality PVC fenestration products, visit FGIAonline.org.