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CUZI
INDUSTRY CO.,LTD

File name: impregnated glue paper veneer wood based panel inspection standards

Third-level documents

Document Number PZ-WI-019-020

Version No. A/1

Page 1 of 3

1 Purpose

To clarify the product standard and ensure that the product can be judged effectively and reasonably.

2 Scope

The standard is applicable to all melamine paper-finished man-made boards of our company.

3 Appearance quality inspection method white melamine board 18mm

3.1 The height of the inspection table is about 700mm

3.2
Lighting source for 40W fluorescent tube three, lamp spacing of about 400mm,melamine sheets for cabinets the length of the lamp direction parallel to the direction of the white mdf sheets length, lamp height from the inspection table is about 2m, natural light
should not affect the inspection.

3.3 The inspector should have normal vision (or corrected vision), and at both ends of the board length test, the sight distance of 0.5m-1.5m, the perspective of 30 ° -90 °.

4. specific content

4.1front from the edge of the high gloss melamine board within 5 mm allowed to have dry or wet flowers; back of the total area of dry or wet flowers does not exceed 5% of the board surface

4.2 Any 1 m² of the front side of the board within 3mm²-30 mm² is allowed to have a stain; any 1 m² of the back side of the board within 5 mm²-30 mm² is allowed to have a stain.

5. melamine sheets sizes  mm²-30 mm² allow 3 stains.

4.3 Any 1 m² of the front surface of the board within the length of ≤ 100 mm scratches allowed 2, affecting the decorative layer is not allowed; any 1 m² of the back surface of the board within the length of ≤ 200 mm scratches allowed 4, affecting the decorative layer is not allowed.

4.4 Indentation is not allowed on the front side; 20mm²-50mm² is allowed on the back side of any 1m² panel

4.5 The front and back side are not allowed to have obvious bottom penetration; the width shall not exceed 10mm, only one side is allowed to have cardboard misalignment; the total area of surface pores does not exceed 3% of the board surface.

4.6 Obvious color mismatch or uneven luster is not allowed on the front and back side

4.7 The front side does not allow bulging; the reverse side of any 1m² board surface ≤ 10 mm² of bulging allowed 1

4.8 melamine board lowes front and back ≤ 100 mm of paper tears are allowed 1 / sheet

4.9 front side does not allow a partial lack of paper; back ≤ 10mm² of the local lack of paper allowed 1 / sheet

4.10 The front side is not allowed to have chipped edges; the reverse side is allowed to have chipped edges ≤ 3 mm

CUZI INDUSTRY
CO.,LTD

File name: impregnated paper veneer man-made board inspection standards

Third-level documents

Document Number PZ-WI-019-020

Version No. A/1

Page 2 / Total 3

4.11. Serious defects such as cracking, delamination,corner loss, etc. affecting the use and decorative effect are allowed on the front and back side melamine sheets sizes.

4.12. The dimensional deviation of length and width shall not exceed ±2 mm, and the deviation of thickness shall not exceed ±0.3 mm melamine board suppliers.

4.13. Deviation of perpendicularity shall not exceed 1mm / m, right angle deviation of the edge shall not exceed 1 mm / m

4.14 The warpage of high gloss melamine board the thickness of 3mm-12mm shall not exceed 0.5%; the warpage of the thickness of more than 12mm shall not exceed exceed 0.3%.

4.15 The density of the 18mm melamine faced mdf board is: 690-800kg/ m³

4.16 Water absorption expansion rate is: ≤ 8.0%.

4.17 The water content is: 3.0-10.0%. 3.0-10.0%

4.18 Static flexural strength: thickness ≤ 13 mm ≥ 22.0MPa; thickness > 13-20 mm ≥ 20.0 MPa,Thickness>20-25 mm ≥18.0MPa; Thickness>25mm ≥17.0MPa

4.19 Internal bonding strength: thickness ≤ 13 mm ≥ 0.55MPa; thickness > 13-20 mm ≥ 0.45 MPa.Thickness > 20-25 mm ≥0.45MPa; Thickness>25mm≥0.45MPa melamine sheets prices.

4.20 grip dowel force (board surface) is: ≥ 1000N

4.21 Surface melamine board 8×4 resistance to hot and cold cycles. No cracks, no bulging,

4.22 Gloss white mdf sheetsSurface scratch resistance: ≥ 1.5N ≥ 1.5N surface without continuous scratching of the whole circle.

4.23 High gloss melamine surface wear resistance:

(1) Abrasion value≤80 (mg/100r)

(2) White melamine board 8×4 surface pattern After grinding 100 r should retain more than 50% pattern

(3) Melamine coated mdf surface color: ≤80 After grinding 150g, thereshould be no exposed bottom

4.24 MDF laminate sheet surface dry heat resistance. No cracking, no bulging

4.25 Black melamine sheets formaldehyde emission (climate chamber method E1):≤ 0.12 mg/ m³

CUZI INDUSTRY
CO.,LTD

File name: impregnated paper veneer artificial board
inspection standards

Third-level documents

Document No. PZ-WI-019-020

Version No. A/1

Page 3 / Total 3

5. Sampling plan

5.1 Appearance quality sampling program

5.2 Specification Size Sampling Scheme

5.3 Physical and chemical properties sampling program

Material name

Specification Model

Lot number

Supplier

Quantity of the batch

Inspection date

Inspection
record

Appearance
quality inspection

Inspection method

a. Verification               b. Full inspection              c. Random inspection

Inspection items

Standard

Inspection results

Dried flower or wet flower

Front side

Back side

Allowed within 5 mm from the edge of the board

Total area not more than 5% of the board surface

Stain

3㎡ -300
mm² within any 1㎡ board surface

1 place allowed

Any 1㎡ board
surface 5mm² -30mm² Allowed

3 places

Surface scratches

Any 1㎡ The
length of the board surface ≤ 100 mm allows 2 places

The length of any 1㎡ board surface ≤ 200 mm

4 allowed

Surface indentation

Not allowed

20mm² -50 mm² in any 1㎡ board surface

1 place is allowed

Bottom-transparent

Obviously not allowed

Paperboard misalignment

Width must not exceed 10mm, only one side is allowed

Surface porosity

Total area does not exceed 3% of the board surface

Color mismatch

Obviously not allowed

Uneven luster

Obviously not allowed

Blistering

Not allowed

Tearing of paper

Tearing of paper ≤100 mm is allowed 1 place/sheet

Any 1m2 board surface ≤ 10mm² is allowed 1 place

Partial lack of paper

Not allowed

Chipped edge

Not allowed

≤10mm² allows 1 place/sheet

Cracking, delamination, edge loss

Not allowed

≤3 mm

Physical
and chemical performance test

Dimension

Length, width: deviation shall not exceed ± 2 mm;
thickness: deviation shall not exceed ± 0.3 mm

Perpendicularity, edge right angle

Deviation of perpendicularity shall not exceed 1 mm/ m;
deviation of right angle of edge shall not exceed 1 mm/ m

Warpage

Thickness of 3 mm-12 mm shall not exceed 0.5%; thickness
of more than 12 mm shall not exceed 0.3%.

Density of the board

690-800kg/ m³

Water absorption and expansion rate

≤8.0%

Water content

3.0-10.0%

Static flexural strength

Thickness ≤ 13mm, ≥ 22.0MPa; thickness 13-20 mm, ≥
20.0MPa; thickness > 20-25 mm ≥ 18.0MPa

Internal bonding strength

Thickness ≤ 13mm, ≥ 0.55MPa; thickness > 13mm, ≥
0.45MPa

Grip pinning force (board surface)

≥1000N

Surface resistance to hot and cold cycles

No cracks, no bulging

Surface scratch resistance

≥1.5N No continuous scratches on the surface of the
whole circle

Surface wear resistance

(1) wear value: ≤ 80 (mg/100r) (2) surface pattern:
after grinding 100 r should retain more than 50% pattern (3) surface color:
after grinding 150 r should not show bottom phenomenon

Surface dry heat resistance

No cracking, no bulging

Formaldehyde emission

≤0.12 mg/ m³ (Climate chamber method E1)

Judgment

Qualified Failed Downgraded use