Hot Tack Tester HTT-02

Hot Tack Tester HTT-02 is the latest model of hot tack tester introduced to market. while conforming to the method A and B method in ASTM F1921, HTT-02 meets the test requirements of 1200cm/min at high speed.
+86 18560013985

Hot tack strength refers to the strength measured by peeling the heat-sealed sample at a certain speed before it returns to room temperature, i.e. while it's still hot.  


Hot tack property is important since this situation occurs on vertical form-fill-seal packaging, during which no much cooling time is given. In the packing line, contents are dropped into the bag immediately after the sealing bars have opened.


Since the content can be heavy, the hot seal must be able to withstand high loads, thus requiring a high hot tack force.


Test principle

Under known temperature, contact time and pressure conditions, the sample is heat sealed from two heating bars/jaws. Before the temperature drops to room temperature, peel off the heat sealed surface with a certain speed and test its force value, which is the hot tack strength.


Technical features

HTT-02 hot tack tester adopts latest vertical structure and it realizes automatic sample inserting and high speed separation. The application of PLC control unit and HMI touch screen ensure the stability of tester.  

HTT-02 is also able to realize precious speed control(by ball lead screw), temperature control and unform heating. 

1. PLC control and 7-inch human-machine interface touch screen operation
2. Branded PID temperature control unit
3. Aluminum sealing jaws, with upper teflon coated and lower covered with rubber pad.
4. Both Method A and B described in  ASTM F1921
5. RS232 COM port and professional software (optional)

6. Able to provide customized language display

Technical Data



Temperature Range Ambient ~ 250 ℃
Accuracy ± 0.2 ℃
Heat Sealing Dwell Time 0.1 ~ 9999s
Hot Tack Dwell Time 0.1 ~ 9999s
Power 220V
Sealing Pressure 0.15MPa~0.7MPa
Sealing Area 50 mmx10mm
Heating Mode double heating
Loadcell 200N (other available)
Accuracy of Force 0.5 % F.S.
Resolution 0.01N


ASTM F1921 Standard Test Methods for Hot Seal Strength (Hot Tack) of Thermoplastic Polymers and Blends Comprising the Sealing Surfaces of Flexible Webs

Custom application

ASTM F2029 Heat Seal Test  

we provide customers competitive testing solutions.

Homepage    By Test Type    Hot Tack    Hot Tack Tester HTT-02