3M™ Scotch-Weld™ Core Splice Film AF 3070 FST is a dual-cure 120C or 180C curing, low-density, expandable product for these applications: honeycomb sandwich edge finishing, filling mismatched areas, and core splicing and reinforcing honeycomb core.

Scotch-Weld AF 3070 FST film fulfils stand-alone fire, smoke and toxic gas emission (FST) requirements according to FAR 25.853 or ABD 0031 and is obtained with a completely halogen-free FST system.