QUALITY INDICATORS FOR LAMINATED CHIPBOARD PB AND MFC
QUALITY INDICATORS FOR LAMINATED CHIPBOARD PB AND MFC

QUALITY INDICATORS FOR LAMINATED CHIPBOARD PB AND MFC

 

QUALITY INDICATORS FOR LAMINATED CHIPBOARD 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:

  • q-ty, ea./m2, max
  • max. size on surface, max
  • depth, mm, maximum
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.

Original Source https://tomlesdrev.ru/en/products/pb-mfc/

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