Scott ply bond testing

Ply bond testing is used to determine the internal strength of paper and board materials. The ply bond test measures the energy required to delaminate a multiply board structure. Our UKAS, ISO 17025 accredited testing is performed using a Scott plybond tester to the Tappi standard T833 and results are quoted in mJ.

Scott internal bond strength testing is included in Pira's Paper Proficiency Service.

Pira liner cleavage test

A drawback of the Scott ply bond test is that it often causes delamination towards the centre of the board structure, and not always at the weakest ply bond.

To assess the liner strength of carton boards and corrugated liners for various packaging applications including machine carton erection, Pira have developed a liner cleavage test which measures the force to pull a rod through the weakest ply bond.

Contact:

Doug Leatherdale
email: doug.leatherdale@pira-international.com
Tel: +44 1372 80 2108