BLOG

Hot Tack Testing

Hot Tack Testing

Hot Tack Testing

Hot Tack Testing is performed in accordance with ASTM F-1921 standard to evaluate the sealing strength of thermoplastic products. With the hot tack test, the strength of the thermal insulation formed between the thermoplastic surfaces of the flexible webs is measured immediately after sealing and just before cooling at room temperature.

The heat seal feature obtained with the Hot Tack Testing is important for vertical form-fill-seal packages. In heat sealing processes in packages, the content is added immediately after the horizontal closure material is opened, and a high hot bonding force is required to withstand heavy contents. Hot Tack Testing should be done to determine the durability of packaging materials.

With the Hot Tack Testing, you can have information on the following subjects:

  • Minimum Temperature At A Required Hot Tack Strength – Threshold Sealing Temperature
  • Sealing Force with Maximum Peak Force
  • Temperature Range at which Required Hot Tack Strength is Achieved - Hot Tack Range

21235