Pressure sensitive adhesive probe tests

In another tack test, a steel ball of specified diameter is rolled down a grooved incline onto a conditioned surface area of pressure sensitive adhesive (ASTM D 3121, PSTC-6). The length of travel before it stops is the rolling ball tack (Fig. 2d) reported in millimeters. It is relatively inexpensive and simple to set up. Similar test variables to the probe tack test apply. 

The holding power, adhesion, and probe tack of selected pressure-sensitive adhesive sheets were evaluated in accordance with JIS Z0237. Testing results are provided in Table 2. 

Pressure Sensitive Tadc of Adhesives Using an Inverted Probe Machine, Test for (D 2979) Tack of Pressure-Sensitive Adhesives by Rolling Ball, Tbst for [Pg.790]

Illustrations of several test methods used to characterize tack of pressure-sensitive adhesives (PSAs) (a) flat probe tack, (b) loop tack, and (c) rolling ball tack... 

Illustration offeree vs time trace for a probe tack test of a pressure-sensitive adhesive as the probe is compressed to make contact, held for a fixed dwell time, then removed... 

Standard Test Method for Pressure-Sensitive Tack of Adhesives Using an Inverted Probe Method, D2979-82, Note 1, American Society for Testing and Materials, Philadelphia, 1982. 

ASTM D2979-01 Standard test method for pressure sensitive tack of adhesives using an inverted probe machine. 

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