The Abrasion tester 66 is the ideal instrument suitable for abrasion tests according to UNI 7858) and pilling tests according to ASTM-D-59T on fabrics, sponges, porous and elastic samples with loss of materials and other materials.
Bristle and nylon brushes, abrasive cloth or fabric are employed as abrasive holder according to the test procedures adopted by the operator commonly used for abrasion tests, while only for pilling tests the use of fabric is required .
Continuous or alternate rotation both clockwise or counterclockwise direction with START/STOP automatic loop cycles avoiding any orientation of sample fibers in only one direction and simulation of work on sample materials and result conditions more closely real to standard use.
Specific criteria to follow the execution of the tests are described below:
Analyses on turns no. with subsequent loss of material
Δm (%) = (mf / mi)*100
= mass loss
=sample mass after the abrasion
= sample mass before the abrasion
Analyses on turns no. needed to generate the first breaks on sample
%P: (Pf / Pi)*100;
= Physical resistance loss under perforation
= Physical resistance loss after perforation
= Physical resistance before perforation
The vertical position of the test area is definitely the right choice to do this test kind allowing to drop down abraded material without influencing test specimen surface under performance test.
A special mechanism is fitted-in to maintain tightly fixed the sample under examination without any stretches.
Abrasive assessment is generated by a strength test between abraded and no abraded strips, appearance, loss in weight, thickness and number of “pills” per unit area.