Plywood Grading Rules :Part 9 Reference guide on film faced plywood grades and defects – Sveza

Plywood Grading Rules :Part 9 Reference guide on film faced plywood grades and defects – Sveza

December 27th,2018

CATALOG OF FILM FACED PLYWOOD GRADES*standard limitations in regard to film faced plywood
processing faults and defects, in accordance with Corporate Standard
STO 00255177-002-2014

TABLE OF CONTENTS
Part 2. Description of the defects
1. Coverage of wood grain structure, sound knots, inserts (page 17)
2. Delamination, tearing, absence, shedding of the film (page 18)
3. Temperature stains (page 19)
4. Overlaying (folds) of film (page 20)
5. Sticking of pieces of film (page 21)
6a. Burnt film (burnout) due to defects of the outer layer: cracks, damages, knot-holes (page 22)
6b. Burnt film (burnout) due to defects of the outer layer: non-smooth scuffleness (page 23)
6c. Burnt film (burnout) due to defects of the outer layer: stripes and stains from grinding (page 24)
7a. Traces of defects of the inner layer: knot-holes, openings (page 25)
7b. Traces of defects of the inner layer: open joint, cracks (page 26)
8. Trace of built-up or spliced veneer (page 27)
9. Stripes and stains from press plates (page 28)
10. Stripes and stains from film (page 29)
11. Local plywood blisters (page 30)
12. Veneer parts inserted glued in outer layer (page 31)
13. Marks from the press plates (page 32)
14. Dents (page 33)
15. Scratches (page 34)
16. Defects of cutting, chips on edges (page 35)
17. Down flows (page 36)
18. Lack of veneer sheet (page 37)
19. Local delamination in inner plywood layers (hidden bubble) (page 38)
20. Warping (page 39)
2
Part 1. Description of grades

Special Thanks to the following sources :

1.http://www.sveza.ru/crn_fls/svnew2_pr/15303-14194-303201-sto_lbff_angl_yazyk_146201-sto_lam_eng_revised_(dlya_sayta).pdf

2.http://www.sveza.com/crn_fls/svnew2_eng_brosh/6127-6134-7_file.pdf

 

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