Quality Requirements for Flat Laminating & Flat Tempering

Description Items

Quality Requirements

Flat Laminating(FL)

Flat Tempered(FT)

Thickness

Tolerance

2.7mm

2.55-2.85

--------

3.0mm

2.70-3.00

2.70-3.00

3.2mm

3.05-3.35

3.05-3.35

4.0mm

3.80-4.20

3.80-4.20

5.0mm

4.70-5.00

4.70-5.00

6.0mm

5.80-6.20

5.80-6.20

8-10-12mm

± 0.3

± 0.3

15-19mm

± 0.4

± 0.4

Edge Thickness Differential

2.7-6.0mm

Max0.06mm in 100 mm --------

8.0-12.0mm

Max0.10mm in 100 mm

--------

Cross Bow

2.7-6.0mm

≤1.0mm/m

≤2.0mm/m

8-10-12mm

≤1.5mm/m

≤2.0mm/m

15-19mm

--------

≤2.0mm/m

Edge

Quality

2.7-6.0

Flake: ≤3MM

Flake: ≤3MM

Flare/Bevel: ≤3MM

Flare/Bevel: ≤3MM

Corners: ≤4MM

Corners: ≤4MM

8.0-12.0

Flake: ≤6MM

Flake: ≤6MM

Flare/Bevel: ≤4MM

Flare/Bevel: ≤6MM

Corners: ≤6MM

Corners: ≤10MM

15.0-19.0

--------

Flake: ≤12MM

--------

Flare/Bevel: ≤12MM

--------

Corners: ≤25MM

Over Score & Cutter Drag

None allowed

None allowed

Size

Tolerance

Thickness

≤2000mm

>2000mm

≤2000mm

>2000mm

2.7-6.0mm

± 2mm

± 3mm

± 2mm

± 3mm

8.0-12.0

± 3mm

± 4mm

± 4mm

± 4mm

15.0-19.0

--------

± 6mm

± 6mm

± 6mm

Squareness

For all thicknesses

Diagonal measurement difference/2 ≤0.2% the diagonal length

Linear

Flaws

Scratch, Roll Scuff, Roll Mark, Stringer,

No flaws visible at 2 meters when viewed under fluorescent light

No flaws visible at 1 meter when viewed under fluorescent light

Bloom

For all thicknesses

--------

≤Grade 2.0

Non-

Continuous

Defects

Defect Size(d)

No. allowed per square meter

No. allowed per square meter

d ≤1.0mm

allowed

allowed

1.0<d ≤1.5mm

1

1

d>1.5mm

None

None

Optical Distortion

Zebra ≥45 °

Zebra ≥45 °