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 | 0~+10mm, Negative tolerance is not allowed |
| Width | ±1mm, the difference between the maximum and minimum values ≤3 mm |
| Thickness | thickness＜25mm， ±0.5mm |
| thickness≥25mm，±1.0mm | |
| Tolerance on wall thickness | ±0.5mm |
| Structure | wood plastic composite |
| Bevel | need negotiation by the Customer and factory |
| Straight Angle | ≤ 0.30mm |
| Straightness | ≤ 1.0mm |
| Model of click | should be the same as the confirmed steel model |
| Note: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.For wpc flooring, the weight should be more than 95% of WPC weight which two parts agreed. |
WPC Flooring Appearance & Quality Requirements
In addition to the design effect, the color should be uniform, the surface is flat, no scratch, no obvious concave and convex, the impurity, the end should be straight, no burr.
| 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, crack | 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 |
| Surface granular | Not allowed | It is allowed if not too obvious |
| Incomplete sander-polishing | Not allowed | |
| Tongue and corner deformity | Not allowed | |
| The board face concave and convex is only used for judging the plane plastic wood floor |
WPC Flooring Physical And Chemical Performance Requirements
| Test Item | Test method | Standard | |
| Water absorption of 24h | At room temperature, the immersion time of the sample was 24h±15min | ≤2.0% | |
| State after heating( 120℃) | (120±2)℃，(30+3)min | No bubbles, cracks, pitting | |
| Size change rate after heating(100℃) | (100±2)℃，(60+3)min | ±1.0% | |
| Density | ≥1.2g/cm³ | ||
| surface abrasion resistance | 100*100*1pc sample, install it on the wear tester. When grinding wheel weight (27±2) g, width (51.4±0.6) mm, sand paper 180#0/3 condition, wear 100 turns, remove the specimen from the surface and weigh it | ≤0.10g/100r | |
| Shore hardness (D type) | GB/T2411 | ≥60 | |
| nail-holding ability | surface | GB/T 17657-1999 | ≥1300N |
| side | ≥1200N | ||
| Four point bending strength | QB/T 4161-2011 （appendix）A | ≥18Mpa | |
| Four point flexural modulus of elasticity | ≥1800Mpa | ||
| Freeze thawing resistance | 24h in room temperature water, then put in ( -29±1) ℃24h, finally put 24h in room temperature environment, then place room temperature 24h, measure bending strength load | No skin, no crack, bending strength retention ≥90% | |
| degradation testing （1000h） | The black label temperature is (65 + 3) C, relative humidity is (50 + 5)%, irradiance is 0.35W/m2@340nm, continuous illumination. Cycle period is 120min, where 102min does not spray water, 18min spray water, aging time is 1000h. | The surface of the sample should not be seen by the naked eye, the skin or the crack, the hollow and the uneven color change.色差color difference：ΔE≤9 | |
| Formaldehyde release | GB/T17657-1999 | ≤0.5mg/L | |
| 可溶性铅含量Soluble lead content | QB/T 4161-2011 | ≤90mg/kg | |
| 1. Not test the nail holding ability of a hollow WPC2. Not test flexural strength and flexural modulus of elasticity when the WPC thickness over 50mm3. Should grinding treatment of flooring surface when test degradation testing surface color change |
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
Should be fastened firmly, with plastic film or other soft material package, you need to use other special packing methods agreed by both sides of supply and demand.
Transport
It should be flat and stacked to avoid heavy pressure, rain prevention and sunscreen, light load and light load.
