How can the peel adhesion and probe tack properties of pressure-sensitive adhesives based on amorphous polyolefins be improved?
Increased concentrations (up to about 30%) of Eastotac™ H-100R resin with Eastoflex™ E-1060 amorphous polyolefin (APO) have been shown to significantly improve both peel and probe properties of APO pressure sensitive blends. In this work, the peel adhesion improved up to about 112 g/mm and the probe tack improved up to about 1200 gms using a 70/30 blend of APO/tackifier, but as the tackifier portion was increased beyond 30%, both properties were noted to decline. For more information in formulating APO pressure-sensitive adhesives, please refer to Eastman publication WA-23.
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