Blocking Tendency Cut two 60 mm 90 mm test pieces, put them together with PVC film facing inside. Hold the test pieces with two 60 mm x 60 mm smooth glass plates aligning one end of the glass with one of the short ends of the test piece.
Blocking Tendency Cut two 60 mm 90 mm test pieces, put them together with PVC film facing inside. Hold the test pieces with two 60 mm x 60 mm smooth glass plates aligning one end of the glass with one of the short ends of the test piece.