Can rolling-ball tack properties of SIS (styrene-isoprene-styrene) based pressure-sensitive adhesives be improved by increasing the tackifier concentration?
Results of lab work using an SIS polymer with Eastotac™ H-100R resin indicates increasing amounts of tackifier can result in improved rolling-ball tack up to a point, but beyond a certain level excessive tackifier can actually reduce the rolling-ball tack. About 1/1 to 1.2/1 ratios of tackifier to polymer is a good optimization range, but the exact concentration will depend on the specific components and their concentrations. It should be noted that rolling-ball tack was also found to be inverse to probe tack, so a balance in properties may be required. Increased amounts of plasticizing oils and lower melting point resins can also help to improve rolling-ball tack.
Related Questions
- How can loop tack and quick stick properties of SIS (styrene-isoprene-styrene)-based pressure-sensitive adhesives (PSAs) be improved?
- How can the peel adhesion and probe tack properties of pressure-sensitive adhesives based on amorphous polyolefins be improved?
- How can probe tack of an SIS (styrene-isoprene-styrene) based pressure-sensitive adhesives (PSAs) be improved?
