Saflex Structural Technical Data
6Pages

PRODUCT TECHNICAL DATA Saflex® Structural (DG) - Polyvinyl Butyral Interlayer Saflex® Structural (DG) polyvinyl butyral (PVB) interlayer is a tough, resilient film produced from plasticized polyvinyl butyral (PVB) resin. It is designed specifically for applications where increased interlayer rigidity and high glass adhesion are required relative to conventional glazing interlayers. The designed high adhesion may render this product inappropriate for lamination with thin annealed lites of glass when used as a single layer interlayer if penetration resistance is required. Product Overview: Saflex Structural PVB combines stiffer rheology, versus conventional PVB interlayers, with features such as glass containment upon breaking, UV screening, low haze and the ability to laminate thick multiply glass. Storage, assembly and lamination properties similar to other Saflex® brand PVB interlayer products, along with the aforementioned properties, make Saflex Structural interlayer an excellent choice for most structural applications. Information regarding the safe handling and storage of Saflex Structural can be found in the Safety Data Sheet that is available from Eastman or at www.saflex.com. Lamination procedures are documented in the Saflex lamination guide, which is available by contacting your Eastman Technical Service representative. Specific applications of Saflex Structural PVB interlayer include its use in structural glass applications such as: balconies, floors, fins and stair treads. It may also be used, to adhere the glass spall shield layer for bullet resistant glazing, glass applications where creep at higher temperatures is a concern and areas where the edge effects from sealants or exposed laminate edges need to be minimized. When used as part of a multi-interlayer laminate glazing system in place of one layer of standard PVB, Saflex Structural interlayer can provide increased infill retention due to lower deflection as compared to a similar laminate system without Saflex Structural interlayer. Saflex Structural interlayer can be layered with Vanceva colors and other architectural Saflex products. When layering with other Saflex architectural interlayers, the modulus of the Saflex Structural interlayer should be adjusted accordingly for calculations, and color mottle should be verified through mockup panels. Available Forms: Saflex Structural interlayer is supplied in standard lengths and widths (up to 3.2 m). Saflex Structural interlayer is available in 0.76 mm thicknesses and is supplied on a 15.2 cm (6 in) diameter core in roll form. Saflex Structural is supplied in rolls as refrigerated or interleaved with polyethylene that do not require refrigeration (additional charge applies). Interleaving is not available for all products. All interleaved product is special order and subject to lead times. Please contact your Saflex Sales Manager, Customer Service Representative or visit www.saflex.com for further information as all formulations and sizes may not be available in your region Storage Conditions: Saflex Structural PVB interlayer should be stored inside the moisture barrier bag that the roll is shipped in and maintained within the temperatures recommended in the Saflex Laminating Guide. It is recommended that the interlayer be used within a two-year period from purchase to minimize the interlayer adhering to itself (blocking). EASTMAN The results of insight- Applications Technical Documentation (ATD) 730 Worcester Street | Springfield, MA 01151 glazing@eastman.com | www.saflex.com | www.vanceva.com product technical sheet - saflex structural_031720.docx Page 1 of 6

Laminating Conditions: A Laminating Guide which details recommended practices for storage, handling, and lamination is available to Eastman’s laminating partners. This technical guide is available only from your Saflex Technical Service (TS) Representative or Saflex Sales Manager. Saflex® Structural - Select Properties EASTMAN The results of insight- Applications Technical Documentation (ATD) 730 Worcester Street | Springfield, MA 01151 glazing@eastman.com | www.saflex.com | www.vanceva.com product technical sheet - saflex structural_031720.docx Page 2 of 6

EASTMAN The results of insight- Applications Technical Documentation (ATD) 730 Worcester Street | Springfield, MA 01151 glazing@eastman.com | www.saflex.com | www.vanceva.com product technical sheet - saflex structural_031720.docx Page 3 of 6

1 - Data based on NOA for Saflex formulation 2 - Safety Glazing impact - 0.76 mm used for Class B - Cat I as this is the thinnest product available in this formulation. 3 - Solar, Thermal, Optical and Color data based on 0.76 mm clear Saflex Structural PVB interlayer with clear nominal 3 mm glass. Calculations performed using OPTIC and WINDOW 7.0 by Lawrence Berkeley National Laboratory. 4 - SPF is a calculated value based on the spectral data from the laminate and not a result of direct testing. EASTMAN The results of insight- Applications Technical Documentation (ATD) 730 Worcester Street...

The shear relaxation modulus and calculated Young’s modulus of Saflex® Structural (DG PVB interlayer) for a given load duration at temperature is provided for use in calculating structural capacity of laminated glass containing this product. Load Duration EASTMAN The results of insight- Applications Technical Documentation (ATD) 730 Worcester Street | Springfield, MA 01151 glazing@eastman.com | www.saflex.com | www.vanceva.com product technical sheet - saflex structural_031720.docx Page 5 of 6

Values calculated using E = 3G as per EN 16613 par 5.1; for exact values of the Young's modulus available actual Poisson's ratio can be used Notice: Although the information and/or recommendations as may be set forth herein (hereafter "Information”) are presented in good faith and believed to be correct at the date hereof, Eastman Chemical Company and its subsidiaries and affiliates including Eastman Inc. (hereinafter "Eastman") make no representations or warranties as to the completeness or accuracy thereof. Information is supplied upon the condition that the persons receiving same will...