Screen protection tape
Process protection tape
Processing of die-cutting/carrier, support
DOWSIL™ 7637 VLO Adhesive can be coated on backing material directly as itself or blending with other PSA and normally used with SYL-OFF™ 7028 Crosslinker and SYL-OFF™ 4000 Catalyst. To improve bonding strength with backing material, anchorage additive can be applied. However, corona treatment of primer treatment on coated substrate would be best option to get good anchorage performance. When used in the manufacture of pressure sensitive constructions, catalyzed DOWSIL™ 7637 VLO Adhesive is normally cured at 140°C for 1~2 minutes in a vented, continuous coating oven with 0.2% SYL-OFF™ 7028 Crosslinker and 0.5% SYL-OFF™ 4000 Catalyst. Air flow patterns, air volume and velocity will have an impact on adhesive curing speed. If the cure speed needs to be increased or process and backing material allowed a lower temperature, SYL-OFF™ 4000 Catalyst should be increased by up to 1%. However, insufficient temperature can cause residue and poor anchorage performance by uncured adhesive.