PB and MFC
Chipboard - board material fabricated by hot molding of wood dusts with addition of binders.
Laminated chipboard – particle board coated with printed decor paper and melamine film.
QUALITY INDICATORS FOR LAMINATED CHIPBOARD
| Indicator | GOST 10632-2014 |
|---|---|
| Flexural strength, MPa, minimum |
11-18 depends on board thickness |
| Density, kg/m3 |
580-710 depends on board thickness |
| Warpage, mm, maximum | 1.0 |
| Tensile strength perpendicular to faces, MPa, minimum |
0.35 depends on board thickness |
| Specific resistance with normal coat breaking, MPa, minimum | 0.8 |
| Hardness of protective/decorative coating, microns, minimum | 2.0 |
| Thermal stability of coating | No appearance change |
| High-temperature resistance | No appearance change |
| Resistance to housekeeping and domestic substances | No appearance change |
| Humidity, % | 5-10 |
SIZES AND CLASSIFICATION
|
Size, mm Extreme deviation in length and width, mm |
2750х1830 ±5.0 |
|
Thickness, mm Extreme deviation in thickness, mm |
8.0 - 40.0 ±(0.3-0.5) depends on board thickness |
| Grade of laminated chipboard (surface finish quality) | 1; ½ |
| Formaldehyde release class | Е 1 |
| Textures |
Wood pores Deep wood pores Fine wood pores Shagreen Veneer |
COATING APPEARANCE REQUIREMENTS BY CLASSES
| Defects | Class 1 | Class 1/2 |
|---|---|---|
Dents:
|
1 5.0 0.2 |
2 5.0 0.4 |
| Inclusions (secondary laminate) | Not allowed, with exception of zone along the perimeter from the edge, 2 ea. | Allowed at one board face, 1 ea., max 30 mm. |
| Spot | Not allowed, with exception of 20 mm zone along the board perimeter, 1 ea., max 5 mm | Allowed at one board face, max 1 ea., max 20 mm. |
| Gray marks | Not allowed, with exception of 10 mm zone along the board perimeter. | Allowed at one board face along the perimeter, max 30 mm, from face edge. |
| Stripes, bleed lines (overheat) | Not allowed. | Allowed at one board face, max area 2%. |
|
Occurrences: inclusions of large chips, bark crimps of chipboard |
Allowed at one board face, max 1 ea, max 10 mm, along the board perimeter. Not allowed. |
Allowed at one board face, max 2 ea, max 10 mm, or 5 ea., max 5 mm. Allowed small ones, with no frosting along one face, max area 2%. |
| Scratches, score marks (longitudinal and lateral), microcracks. | Not allowed. | Allowed at one board face, max 2 ea., max length 200 mm. |
| Pattern defect, edge spalling, coating tear-out and detachment, undermolding, angle twisting. | Allowed as per GOST R 52078-2003 Section 6.2 within board format - stripe not wider than 20 mm. | |
Company |
Products |
Information |
Sales Departament
Tel: +7 (3822) 28-33-48
E-mail: marketing@tomlesdrev.ru |
Address109/3, 2nd village LPK Str., office 43, Tomsk, Russia, Zip code: 634024 
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