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29.2.1 Contrast medium, e.g, graphite, talcum, or solution of dye in alcohol, to contrast with the colous of the sheet under test.
29.3.1 Scratch testing apparatus, (see Figure 18), consisting of the following parts:
29.3.1.5 Hemispherical diamond scratching point, with a point radius of (0,090 ± 0,003) mm and an included angle of (90 ± 1) degree (see Figure 19). (The diamond shall be mounted in the holder with the flat part on the leading side of the shank facing the working direction.)
NOTE 3 This is an example of a suitable product that is available commercially. This information is given for the convenience of users of this part of ISO 4586 and does not constitute and endorsement by ISO of this product.
29.3.1.6 Clamping disc, to keep the test specimen flat
29.3.2 Viewing enclosure, having a matt black interior and a light source (defined below) located at the top. Its dimensions shall be such that the test specimen is located vertically below the light source and at a distance of 600 mm. An aperture in the front shall allow inspection of the test specimen at various angles from a distance of (400 ± 10) mm. A diagram of a suitable enclosure is shown in Figure 20.
Place the diamond point on the table of the electronic balance (see 29.3.4) and, with arm in a horizontal position, verify that the position marks for sliding weight correspond to the load values shown in Table 4. If not, move weight as necessary to achieve the correct loads, and mark the correct positions on arm.
Table 4 ---- Load values
| Position mark | 1,0 N | 2,0 N | 4,0 N | 6,0 N |
| Load (grams force) | 102 +/- 1 | 204 +/- 1 | 408 +/- 1 | 612 +/- 1 |
29.5 Test specimen
Table 5. See Figure 21 for further explanation:
Table 5 --- Scratch resistance rating scale
|
Discontinuous scratches, or slight surface scratches,
or no visible marks
|
≥90% of continuous double circles clearly visible traces |
|
|
level 5 |
6 N |
|
|
level 4 |
4 N |
6 N |
|
level 3 |
2 N | 4 N |
|
level 2 |
1 N | 2 N |
|
level 1 |
-- | 1 N |
WPC Flooring Standard of Size, Appearance, Defects, Physical And Chemical Performance And Lab Testing methods.
Standard Specification for Engineered Wood Flooring , Engineered Wood Flooring Appearance, Engineered Wood Flooring Quality Requirements.
Standard Specification for Types Of Cork Flooring, Cork Floor Tile Inspection, Cork Flooring Problem.
Standard Specification for Outdoor use the anti-corrosion of real wood floor, Outdoor use the anti-corrosion of real wood floor Appearance And Quality Requirements.
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Standard Specification for Laminate Floor, Laminate Floor Appearance And Quality Requirements.
This standard specifies the definition, category, requirements,testing manners,rules of inspection, marks, package, transportation and storage of high density fiberboard.
QUALITY CONTROL STANDARD-WOOD PLASTIC COMPOSITE FLOORING OUTDOOR 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 WPC 2. Not test flexural strength and flexural modulus of elasticity when the WPC thickness over 50mm 3. 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.
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