The FilterFAB line from Franklin Adhesives & Polymers has been launched with three adhesives that meet many bonding applications in the assembly of air and liquid filters. The line includes two water-based Polyvinyl Acetate (PVA) adhesives for assembly and a polyurethane filtration adhesive that can handle end cap potting and edge/frame sealing.
Franklin Adhesives & Polymers claims that rigorous in-house testing indicates that both of the two PVA adhesives – FilterFAB 200 and FilterFAB 300 – offer stronger bond strength than other filter fabrication adhesives. Both of these PVA products provide the convenience of one-part formulation and the easy clean-up inherent in water-based adhesives. Compatibility with most glue spreader systems makes it all the easier to use either of these FilterFAB products, says Franklin Adhesives & Polymers.
Similarities aside, the PVA adhesives offer distinctive characteristics to meet specific applications. Developed for cost-effectiveness and speed, FilterFAB 200 offers a set time of less than 30 seconds – making it one of the fastest-setting adhesives available for filter assembly. Additionally, it can be applied in temperatures as low as 2°C (35°F).
In comparison, FilterFAB 300 is a high-performance PVA ethylene copolymer emulsion adhesive with very strong green and tensile strength. It sets almost immediately with some repositionability. In many cases, this adhesive eliminates the need for clamping. While FilterFAB 200 contains no added formaldehyde, this formulation is formaldehyde-free.
FilterFAB 2000 is a two-component solvent-free polyurethane assembly adhesive for assembling air, water and oil filters. It is particularly suitable for potting filter end caps and bonding side seams. This adhesive bonds well to metals, PVC, vinyl, fiberglass and cellulosic materials and offers good chemical resistance as well as good heat resistance with temperatures below 77°C (170°F). Room-temperature cure time of three to five minutes can be heat accelerated, and it reaches handling strength in less than ten minutes. As powerful as it is versatile, this FilterFAB adhesive offers Shore D Hardness of 80 to 82 (when fully cured) and meets FDA regulation CFR 175.105 for indirect food contact. It is also available in two colors, beige and white.