Polyken probe tack

Polyken Probe Tack Test, ASTM D2979. 

Several variations of the test exist. Historically, the first referenced probe test is the Polyken probe tack test developed by Hammond [6]. In this case, the probe has a flat tip and is upside down. The compressive force is controlled by lifting a... 

Probe Tack Determined by a Polyken Probe Tack Tester (Testing Machines, Inc.) Conditions 1 cm/sec Speed, 1 sec dwell, 100 gm/cm pressure. 

Probe tack conditions are set forth by ASTM and the Polyken Probe Tack Tester, shown schematically in Fig. 9, is the most commonly used instrument. In this device, developed by Hammond,a 5 mm diameter fiat-ended rod, connected to a load cell, constitutes the probe The instrument mechanically lifts the... 

Fig. 9. Schematic of Polyken probe tack tester showing detail of contact area. 1, backing 2, adhesive 3, weight 4, carrier 5, probe 6, timing control.

A widespread tack measurement method is the probe tack method proposed by Wetzel [56] and refined by Hammond [57]. In this method, known as the Polyken probe tack method (Fig. 8-17), a cylindrical ram with a diameter of 0.5 cm is pressed from below against the adhesive layer at a defined pressure and speed and removed again at a defined speed after a certain contact time (see ASTM D2979-71). 

Procedure for Polyken Tack Test (ASTM D2979-71). A 1-inch square of substrate coated with adhesive was adhered to the top of the brass cylinder. The cylinder was inverted, rubbed on the bench top, and placed right side up on the Polyken Tack Probe Tester. The probe speed was sent at 1 cm/sec and 1-sec dwell time. A 20-gram weight was used. Both the stainless steel probe and the brass cylinder were cleaned with toluene before each use, and sufficient time was allowed for drying. The force required to overcome the bond to the probe was recorded in g/cm. Seven trials were made and an average reported. 

Influence of type and amount of clay added on the tack of adhesives. The probe test (Polyken test) was used. The device measures the force required to separate a stainless-steel probe (0.5 cm diameter) from the adhesive under low pressure and at short contact times. Tack was tested with a 100gcm contact pressure, 1 s dwell time and at a 1 cms test rate. 

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