Testing adhesive bonds in packaging

Smithers uses the PAPT 3 test machine to perform tests on adhesives used in packaging.

What is the PAPT 3 machine?

Our unique PAPT 3 machine has been designed to allow complete control throughout testing of the key bonding process parameters: open time, contact time, contact pressure and application speed. Glue application weight and temperature are managed externally of the machine. This can all be run in combination with different packaging materials and process settings, providing fast, accurate testing.

Smithers runs testing programs using the equipment to help clients validate production methods and material choice, preventing production delays and quality control issues.

Key product features:

Five bond rupture stations each with their own settings
Adhesive application – compatible with commercial hot melt applicators and cold water-based applicators used to control adhesive temperature and weight
Application speed – variable up to 0.8m/s
Open time – variable from 0.5s
Contact time – variable from 0.2s
Rupture speed – variable up to 250mm/s at constant velocity
Bond strength – measured by load-cell (maximum 10kg/25mm bond length, measured at 20mm/s rupture speed)
Bond compression – 0.5, 1.0, 1.5kg or 2kg/25mm bond length