The Use of Polyurethanes In Automotive Air And Fluid Filters

Posted on 10/3/2012 10:26:53 AM By

Polyurethane adhesives have recently become an option for bonding or even replacing components of automotive filters. The use of polyurethane provides multiple advantages over the vinyl plastisol adhesives used in since the 1960s. Vinyl plastisols have been used as potting adhesives to bond filter material to metal end-caps. However, plastisols have high densities, long cycle times and may leach ortho-phthalate plasticizers and chlorine-containing substances. Polyurethane adhesives give shorter cycle times and can actually be molded to replace the traditional metal end-cap. This removes the need for separate metal and structural plastic pieces, thereby reducing the cost of parts. In addition, polyurethane processing equipment can save over 25% on manufacturer part costs. Bayer MaterialScience LLC offers high-performance polyurethane-based automotive air and fluid filter systems. The Bayer polyurethane systems are available in in both filled and unfilled, foam and non-foam grades for fluid or air filters. In particular, the Bayer’s Baytec™ polyurethane system may be suitable for adhesive applications and end-cap replacement.