2023-01-11 16:56:34
2022-09-06 10:34:35
2022-09-06 10:30:49
2023-02-15 10:13:32
QUALITY CONTROL STANDARD- LAMINATE FLOORING
Scope
This standard specifies the definition, requirements, inspection methods, rules of inspection and marks, package, transportation and storage.
This standard is applicable to laminate floor.
Technical Requirements
Size and Deviation
Difference of thickness:The absolute value of the difference between nominal thickness tn and average thickness ta shall ≤0.5mm;
The difference between maximum thickness tmax and minimum thickness tmin shall ≤0.5mm
Difference of clear width of surface:Nominal length ln≤1500mm, the absolute value of the difference between ln and every measured lm shall ≤1.0mm.
Nominal length > 1500mm, the absolute value of the difference between ln and every measured lm shall ≤2.0mm
Difference of clear width of surface:The absolute value of the difference between nominal width wn and average width wa shall shall ≤0.1mm;The difference between maximum width and minimum width(wmax and wmin) shall≤0.2mm
Straightness of angle:qmax≤0.2mm
Straightness of the edges:smax≤0.3mm/m
Warp:Convex warp fw1 in width direction shall ≤0.20%;concave warp fw2 shall ≤0.15%;Convex warp fl1 in length direction shall≤1.00%;concave warp fl2≤0.50%
Assembled high difference:Average assembled high difference ha≤0.10mm;Maximum Assembled high difference hmax≤0.15mm
The Appearance & Quality Requirements
Defect Name
Surface
Back face
Superior
Qualified
Water & frosting mark
Not allowed
The total area shall not exceed 3% the surface area
Allowed
Surface scratches
Not allowed
Exposore of base material is not allowed
Surface scratches
Not allowed
Pervious spots of impregnated paper
Not allowed
Layering defects
Not allowed
Tenon deformity
Not allowed
Tenon deformities with a length of less than 5mm are allowed but shall not be more than 2 on the same block.
Gloss unevenness
Not allowed
The total area shall not exceed 3% the surface area
Allowed
Spots, dirt and similar surface defects
Not allowed
≤10mm2
≤10mm2 1 on the same block is allowed.
Allowed
Blistering
Not allowed
≤10mm2,
1 on the same block is allowed
Bubbling
Not allowed
≤10mm2,
1 on the same block is allowed
Tearing of impregnated paper
Not allowed
≤100mm,
1 on the same block is allowed
Bare substrate spots due to defective surface covering
Not allowed
≤20mm2,
1 on the same block is allowed
Wane
Not allowed
Allowed
Surface fissure
Not allowed
Allowed
Losses on edges
Not allowed
―
Physical and Chemical Performance Requirements
Items |
Basic thickness/mm |
|
9≤t<12 |
12≤t≤15 |
|
MOR(modulus of rupture) |
≥30.0MPa |
225.0MPa |
IB(Internal bond strength) |
≥0.80Mpa |
75Mpa |
Moisture content |
3.0〜10.0 % |
|
Density |
≥0.85 g/cm3 |
|
Expansion rate of thickness after water absorption |
≤18.0% |
|
Surface bond strength |
≥1.0MPa |
|
Thermal circulation resistance of surface |
No fissure,no blistering |
|
Scratch resistance of surface |
The decoration of the surface is unscratched under 4.0N's force |
|
Dimensional stability |
≤0.9mm |
|
Wear resistance of the surface |
Business type:≥9000r |
|
Home type I:≥6000r |
||
Home type II≥4000r |
||
Cigar fire resistance of surface |
No black spots, split or blistering |
|
Dryness & heat resistance of surface |
No fissure, no blistering |
|
Stains & decay resistance of surface |
No stains or decayed area |
|
Fissure resistance of surface |
No splits can be observed under 6 magnifier. |
|
Anti-shock performance |
≤10mm |
|
Formaldehyde release |
≤0.3mg/L |
|
Color fastness to light(grey card) |
≥4 Grade |
Marks、Package、Transportation and Storage
Product marks
Factory name, factory address,product name, production date, brand, specification & model number, category, grade, formaldehyde release mark, anti-wear grade of surface and corresponding number of revolutions, quantity and anti-dampness, anti-sunlight marks.
Package
Products shall be packed independently based on their categories, specifications and grades.The enterprise shall provide a Chinese version of Installation & User Manual according to the characteristics of the products.
The package shall be able to protect the products from clashes, scratches and stains. The requirements for packing process can be discussed by both parties.
Transportation and storage
Products shall be placed carefully on the flat ground during transportation, and shall be kept safe from stains,dampness, rain,and exposure to strong sunlight.
Products with different varieties, specifications and grades shall be separately stored, and every stack shall bear its special mark on it.