SVEZA Interior and Exterior Plywood grades Defects Part 4 :Blisters, delamination, bark patch http://baza.sveza.ru/eng/index.php?pid=2&pr=2&def_id=31 Blister is local bulging of plywood surface as a result of delamination. Delamination is separation of two adjacent veneers along the glueline. Bark patch is an area of residual bark and phloem on the veneer surface. …
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