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SPC qualified standards, quality control check list

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  • Reference Standards Detail

1.  Appearance & Quality Requirements

Defects Items

Standard

Defects, fissures, wrinkles, holes

Not allowed

(a)Offset printing, delamination, peeling

Not allowed

(b)Spots, bubbles, scratches, discoloration etc.

Not obviously

(a) is suitable for heterogeneous floor

(b) can be agreed according to the contract between the supplier and the buyer

 

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, 每米长允许一个allowable 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

 

2. Size And Deviation

Length

 ≤ 0.1% of length

Width

≤ 0.2mm, the difference between the maximum and minimum values ≤0.1 mm

mm

+0.13mm to -0.10mm,最大值与最小值绝对值不超过(maximum variation)≤0.1mm

Straight Angle

qmax≤0.20mm

straightness

smax≤0.20mm

Height difference

average value ≤ 0.10mm, Hmax ≤ 0.15mm

Gap

average value≤ 0.07 mm, Gmax ≤0.1 mm

Model of click

应与确认的钢模相同should be the same as the confirmed steel model

 

3. Physical And Chemical Performance Requirements

Gloss

matte

310±2°

semi-matte

1525±2°

glossy

25以上(more than 25±2°

Tensile Strenght

5cm/120N: 4.0mm≥100N 5.0mm≥120N

Ply Adhesion

60N/5cm

Curl after 6hrs at 80℃

Laboratory Oven for 6hrs&80℃ then measure with a Vernier: 1mm

Dimensional Stability

Laboratory Oven for 6hrs&80℃ then measure with a Vernier:0.1%

Dimensional changes after heating

WPC 65℃≤0.2%SPC 80℃≤0.1%

abrasion resistance

 ≥0.015g/1000(r)

Abrasion resistance

Paint film scriber ≥4B

Surface scratch resistance

Surface decorative pattern is not scratched under 4.0N's force.

Indentation

≤0.05mm

Formaldehyde release

 No Formaldehyde

Bibulous rate

≤3%

 

 

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.

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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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