For sealing tests with subsequent tensile testing (hot tack or cold tack) on sealable flexible packaging materials.

• Fully digitally controlled
• For measuring sealing strength immediatly after sealing (hottack)
• For measuring sealing strength after defined cooling time (coldtack)
• Usable as a laboratory sealer
• Precisely adjustable, calibrated sealing parameters and test parameters – sealing time, sealing temperature at the top, sealing temperature at the bottom, sealing force (closing force), withdrawal time (cooling time) and withdrawal rate (pull-off speed)
• The effective sealing force is measured for each sealing and the system automatically takes the thickness of the material of the samples into account.
• High accuracy and maximum reproducibility of all parameters
• Exchangeable sealing bars with different surfaces (smooth, grooved, corrugated)
• Meets all requirements of a test device according to DIN ISO
• Displaying of the meassuerd force as a graph
• Test series with up to 10 curves can be displayed
• Easy operation and clear presentation on the touch panel
• USB and Ethernet interface for saving the test series

All data are approximate only.

The Labormaster hottack tester has its permanent place in packaging material development for flexible packaging, i.e. for classic plastic films, laminates and composites as well as for coated papers or new sealable, recyclable packaging materials and compostable packaging materials.

During production, the Labormaster is used in the manufacture and refinement of packaging materials for quality assurance.

In addition, the hottack tester Labormaster helps quality control and quality assurance in checking the sealing properties, heat sealability and in determining the optimal processing parameters (sealing window).