SVEZA Film Faced Birch Plywood Catalogs of plywood grades Defects Part 8: Film lines and stains

SVEZA Film Faced Birch Plywood Catalogs of plywood grades Defects Part 8: Film lines and stains

Film lines and stains: discolored areas on the surface of film faced plywood caused by volatile emissions during pressing.

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Film lines and stains
Film lines and stains
Measured by the length and the width and defined as the ratio of the total discolored regions area to the overall plywood sheet’s area (expressed as a percentage).
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