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Laminate Floor Standard GB/T 23471-2009

Standard Specification for Laminate Floor, Laminate Floor Appearance And Quality Requirements.

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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 ln1500mm, 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) shall0.2mm

Straightness of angle:qmax0.2mm

Straightness of the edges:smax0.3mm/m

Warp:Convex warp fw1 in width direction shall 0.20%;concave warp fw2 shall 0.15%;Convex warp fl1 in length direction shall1.00%;concave warp fl20.50%

Assembled high difference:Average assembled high difference ha0.10mm;Maximum Assembled high difference hmax0.15mm

 

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

9t12

12t15

MOR(modulus of rupture)

30.0MPa

225.0MPa

IB(Internal bond strength)

0.80Mpa

75Mpa

Moisture content

3.010.0 %

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 II4000r

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

 

MarksPackageTransportation 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 stainsdampness, 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.

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