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-WOOD PLASTIC COMPOSITE FLOORING
SCOPE
This standard specifies the requirements of WPC floor for export, test methods, inspection rules and packaging, transportation and storage requirements
TECHNICAL REQUIREMENTS
Size And Deviation
Length: Indoor ≤0.1% of length; Outdoor ≤0.2% of length
Width: Indoor ≤1.0mm, the difference between the maximum and minimum values ≤0.6 mm;
Outdoor ≤1.2mm, the difference between the maximum and minimum values ≤0.8 mm
Thickness: Indoor ≤0.8mm; Outdoor ≤1.2mm
Stucture: PU/UV Coating+Wear Layer+Decoration Layer+Vinyl Layer+WPC Core +Cork or EVA
Bevel: Chamfer Angle is 45 degrees, chamfering width (i.e., chamfering slope width) is 0.5 mm
Straight Angle: Qmax ≤0.30mm
Straightness: Smax ≤0.30mm/m
Model of click: should be the same as the confirmed steel model
Twist: Indoor ≥1.2mm/m; Outdoor ≥1.5mm/m
Warp: extending direction≤ 6.0mm/m
Gap: average value≤0.3 mm, Gmax ≤0.5 mm
Height difference: average value ≤0.10mm, Hmax ≤0.15mm
RE:
1.No tongue WPC flooring does not required height difference and gap; If have tongue and groove, the width of tongue should be more than 3mm.
2.For holloe wpc flooring, the weight should be more than 95% of solid wpc flooring.
WPC Flooring Appearance & Quality Requirements
Wood-Plastic Composite Flooring Without Coating
Item |
Superior product |
Qualified product |
Color unmatching |
It is allowed if not too obvious |
|
Surface unevenness |
Not allowed |
It is allowed if not too obvious |
Split |
Not allowed |
|
Spots,dirt and similar surface defects |
≤4mm², allowable amount is 1pc/m |
≤4mm², allowable amount is 3pcs/m |
Blister |
Not allowed |
|
Bubble |
Not allowed |
|
Trace grain |
Not allowed |
It is allowed if not too obvious |
Incomplete sander-polishing |
Not allowed |
|
Embossing is not clear or incomplete |
Not allowed |
|
Tongue and corner deformity |
Not allowed |
|
The board face concave and convex is only used for judging the plane plastic wood floor |
Coating Wood-Plastic Composite Flooring
Item |
Superior product |
Qualified product |
Color unmatching |
Not allowed |
It is allowed if not too obvious |
Gloss unevenness |
Not allowed |
≥3% the area of the board |
Split |
Not allowed |
|
Scratches on coating |
Not allowed |
|
Bubble on coating |
Not allowed |
|
Blister |
Not allowed |
|
Exposed undercoat |
Not allowed |
|
Wrinkling |
Not allowed |
≥5% the area of the board |
Pin holes |
Not allowed |
Allowable amount is 3 pcs/m |
Nib |
Not allowed |
Allowable amount is 2 pcs/m |
Tongue and corner deformity |
Not allowed |
Faced Wood-Plastic Composite Flooring
Item |
Superior product |
Qualified product |
Frosting mark and water mark |
Not allowed |
≥3% the area of the board |
Scratches |
Not allowed |
|
Press mark |
Not allowed |
|
Previous spots of impregnated paper |
Not allowed |
|
Gloss unevenness |
Not allowed |
≥3% the area of the board |
Spots,dirt and similar surface defects |
Not allowed |
≤10mm², allowable amount is 1pc/m |
Blister |
Not allowed |
|
Bubble |
Not allowed |
|
Tearing of impregnated paper |
Not allowed |
|
Bare substrate spots due to defective surface covering |
Not allowed |
|
Fissure on the surface |
Not allowed |
|
Delamination |
Not allowed |
|
Tongue and corner deformity |
Not allowed |
Backing Of Wood-Plastic Composite Flooring
Should be smooth, no obvious uneven parts, no cracks, no tenon and missing edge horns. Scratches, bubbles,
impurities,trace grains, gloss unevenness are allowed if they does not influence daily use.
WPC Flooring Physical And Chemical Performance Requirements
Item |
Wood-plastic composite flooring without coating |
Coating wood-plastic composite flooring |
Faced wood-plastic composite flooring
|
|
Bending failure load |
Public places ≥ 2500N, Not in public places ≥ 1800N |
Public places ≥2200N, Not in public places ≥1500N |
||
The normal temperature falling ball impact |
Porkmark diameter ≤12mm |
|||
The low temperature falling ball impact |
No fissure at -10℃ |
- |
||
Density |
≥0.85g/cm³ |
|||
Water absorption rate |
Foaming base material ≤10%,Non-forming base material ≤3% |
|||
Water suction size change rate |
Length direction ≤0.3% |
|||
Width direction ≤0.4% |
||||
Thickness direction ≤0.5% |
||||
Dimensional changes after heating |
Front and back |
±1% |
±0.8% |
|
The difference value between two dimensional changes |
≤ 0.5% |
≤0.4% |
||
Resistance to heat and cold circulation |
Surface appearance |
No fissure, no bubbling |
||
Scale change |
≤0.5mm |
|||
Freeze thawing resistance |
Bending failure load retention rate ≥80% |
|||
Contamination & Corrosion resistance of surface |
- |
Not obvious change |
||
Surface bond strength |
- |
- |
Average ≥1.0MPa,min ≥0.8MPa |
|
Surface scratch resistance |
- |
- |
Surface decorative pattern is not scratched under 4.0N's force. |
|
Film adhesion |
- |
Level 2 or higher |
- |
|
≤0.15g/100r |
Value ≤0.15 g/100r, and paint film did not grind through |
- |
||
Abrasion resistance |
- |
- |
≥4000r |
|
Skid resistance value |
|
≥35% |
- |
|
Creep recovery rate |
75% |
- |
- |
|
Fungi corrosion resistance |
rate of weight loss ≤24% |
|||
Aging performance |
bending load retention rate ≥80% |
|||
Color fastness to light (gray card) |
level 4 or higher |
|||
Formaldehyde release |
level E0 ≤0.5,level E1 ≤1.5 |
|||
For the wood plastic floor is used on the stairs, thus the bending load should be greater than 3338N
Note 1: indoor places without high humidity have no requirements for freezing-thawing resistance property and corrosion resistance to fungal of wood plastic flooring Note 2: skid resistance value of wood plastic flooring is not required in places without high humidity Note 3: wood plastic floor for indoor use has no requirements for the aging performance Note 4: wood plastic floor for outdoor use has no requirements for the color fastness to light |
PACKING
Product Mark
Before the products are stored, they should be tagged in proper parts with their product models, trademarks, production dates, etc.
Packing Mark
The standard codes , factory name, address, product name, production date, trademarks, specifications, formaldehyde release sign, type, grade, quantity, etc.
Package
A product shall be packed based on its category, specification and grade. The enterprises shall provide detailed instruction books and manuals according to the characteristics of a product. The package shall protect products from being hit,scratched or stained. Packing requirements shall only be settled after negotiation between two parties.