Description of defects in laminated plywood
| Name of processing defects |
Standards for limiting processing defects for W/F grade plywood with mesh coating |
|||
| W | F | |||
| 1 | 1 | 2 | 3 | |
| Absence of film coating, peeling, flake |
Not allowed |
|
Allowed size no more than 30x30 mm (subject to coating with moisture-proof paint) |
Allowed up to 20% on one side |
| Film rupture |
Not allowed |
Not allowed |
Allowed width no more than 10mm on one side of the sheet (subject to coating with moisture-proof paint) |
Allowed |
|
Lack of film |
Not allowed |
Allowed no more than 5 mm on one edge of the sheet(subject to coating with moisture-proof paint) |
Allowed width no more than 10mm on one edge of the sheet (subject to coating with moisture-proof paint) |
Allowed |
|
Imprinting of wood structure on the surface of the film coating |
Allowed |
Allowed |
Allowed |
Allowed |
|
Film overlays, wrinkles |
Allowed with a width of no more than 5 mm, a total length of no more than 500 mm (without peeling off the film) |
Allowed with a width of no more than 5 mm, a total length of no more than 500 mm (without peeling off the film) |
Allowed with a width of no more than 5 mm, a total length of no more than 500 mm (without peeling off the film) |
Allowed |
| Whitish traces from defects and blemishes in the wood of the inner layers – fallen knots |
Not allowed |
Allowed in the form of spots measuring 30x30 mm without quantity limitation) |
Allowed |
Allowed |
| Whitish traces from defects and blemishes in the wood of the inner layers – open cracks |
Not allowed |
Allowed in dimensions no more than 5x300 mm of no more than 1 piece per 1 meter of sheet length or width |
Allowed |
Allowed |
| Temperature stains - whitish spots and stripes |
Not allowed |
Not allowed |
Allowed without damaging the film coating |
Allowed |
|
Presence of film fragments on the surface |
Not allowed |
Allowed size no more than 30x30 mm or 10x100 mm of no more than 1 piece per m2 |
Allowed |
Allowed |
|
Sticking of film fragments on the surface |
Allowed sizes no more than 30x30 mm or 10x100 mm in an amount of no more than 1 pc./m2 |
Allowed sizes no more than 30x30 mm or 10x100 mm in an amount of no more than 1 pc./m2 |
Allowed |
Allowed |
|
Burnout because of fallen knots, or cracks in the outer layer |
Not allowed |
It is allowed without Allowed without breaking the integrity of the facing coating of 5x5 mm in quantities of no more than 5 pieces per sheet |
Allowed size of no more than 10x15 mm in the amount of 3 pieces per sheet |
Allowed |
|
Mark from the internal overlaps of the scarf joint or the joints of the edge-glued layer |
Allowed (without signs of destruction of the coating) |
Allowed (without signs of destruction of the coating) |
Allowed |
Allowed |
|
Scratches and risks |
Not allowed |
Allowed (without signs of destruction of the coating) |
Allowed |
Allowed |
|
Imprints from press plates and garbage |
Not allowed |
Allowed in the form of separate stripes and spots |
Allowed |
Allowed |
|
Local film swelling |
Not allowed |
Allowed without signs of destruction of the coating with a diameter of no more than 50mm in the amount of 2 pieces per sheet |
Allowed without signs of destruction of the coating with a diameter of no more than 100mm in the amount of 2 pieces per sheet |
Allowed |
|
Pressed veneer pieces |
Not allowed |
Allowed size no more than 2x30 mm |
Allowed |
Allowed |
|
Dents |
Allowed with a diameter of no more than 6 mm in the amount of 1 piece per m2 (without peeling off the film) |
Allowed with a diameter of no more than 6 mm in the amount of 1 piece per m2 (without peeling off the film) |
Allowed depth of no more than 0.5 mm (without damaging the coating) |
Allowed |
|
Lack of veneer in the inner layers |
Allowed from the 3rd layer with the depth of no more than 3 mm, length not more than 10 mm |
Allowed from the 3rd layer with the depth of no more than 3 mm, length not more than 10 mm |
Allowed from the 3rd layer with the depth of no more than 3 mm, length not more than 10 mm |
Allowed |
|
Crook |
In plywood with a thickness of up to 6.5 mm inclusive - it is not taken into account; in plywood with a thickness above 6.5 mm, a deflection of no more than 15 mm per 1 m of the diagonal length of the plywood sheet is allowed. |
In plywood with a thickness of up to 6.5 mm inclusive - it is not taken into account; in plywood with a thickness above 6.5 mm, a deflection of no more than 15 mm per 1 m of the diagonal length of the plywood sheet is allowed. |
In plywood with a thickness of up to 6.5 mm inclusive - it is not taken into account; in plywood with a thickness above 6.5 mm, a deflection of no more than 15 mm per 1 m of the diagonal length of the plywood sheet is allowed. |
In plywood with a thickness of up to 6.5 mm inclusive - it is not taken into account; in plywood with a thickness above 6.5 mm, a deflection of no more than 15 mm per 1 m of the diagonal length of the plywood sheet is allowed. |
|
Paint smudges on the surface of the sheet |
Allowed width no more than 5 mm |
Allowed width no more than 10 mm |
Allowed |
Allowed |
|
Cutting defects, chips during sawing, film flakes, mechanical damage |
Not allowed |
Allowed are chips with a length of no more than 5 mm and a width of no more than 1 mm, provided they are covered with paint. |
Allowed are chips with a length of no more than 10 mm and a width of no more than 5 mm, provided they are covered with paint. |
Allowed |
