Solvent-based contact cements, such as those based on chloroprene rubber, were traditionally used for this application. They work very well and are available in spray or aerosol versions. However, many users are now reluctant to use them because of emissions regulations, safety concerns or disposal issues.
Can you help us to get rid of the mess created from using fumed silica in our silicone and polyurethane adhesive manufacture? It is so lightweight that it covers the entire factory.
We have a customer who wants to use an adhesive-backed expanded PTFE gasket strip on a steel substrate. However, the customer wants to be able to remove and reapply the strip without losing adhesion. We do not make ePTFE gasket strips, but we have imported some samples for the customer to test. They are not satisfied with the results. I must admit, I am not surprised. Is there such a thing as a PSA that can be removed and reapplied a number of times without losing adhesion?
Polyurethanes can be one- or two-component systems. The single-component systems comprise a polyester or polyether polyol that has been end-capped with an isocyanate.
Regulations on volatile organic compound (VOC) emission have caused solventborne pressure-sensitive adhesives (PSAs) to be gradually replaced by hot-melt or waterborne PSAs.