Quality key
Example: KP80E
1. Digit: K = Corundum
2. Digit: P = Paper
3. Digit: 8 = Dense coated
4. Digit: 0 = Synthetic resin
5. Digit: E = E-paper (from approx. 220 up to 270 g)
1st Digit
Grain specification
| Corundum |
K |
| Silicon |
S |
| Zirkonia / Corundum |
Z |
| Special |
L |
| SG-ceramics |
G |
| none |
O |
| Graphite |
C |
2nd Digit
Backing
| Paper |
P |
| Cotton fibre |
T |
| Combination |
K |
| Other |
Q |
| Fibre |
N |
| Paper - waterproof |
R |
| Synthetics - waterproof |
U |
| Cotton - waterproof |
W |
| Felt |
F |
| Fleece |
E |
| Foam rubber |
G |
3rd Digit
Coating
| Open coated |
(1,3,5,7) |
| Dense coated |
(2,4,6,8) |
| Uncoated |
9 |
4th Digit
Bond
| Special |
1 |
| Synthetic resin |
0,2,8 |
| Hide glue |
3 |
| Hide glue / Stearate |
4 |
| 3. coat |
5 |
| Synthetic resin / Stearate |
6 |
| Free |
7 |
| Free |
9 |
5th Digit
Paper thickness
| 85g |
A |
| 85 to 100g |
B |
| 110 to 135g |
C |
| 135 to 160g |
D |
| 220 to 270g |
E |
| 270 to 350g |
F |
| 350 to 500g |
G |
| 500g |
H |
Fibre types
| Polyester heavy |
Y |
| Polyester light |
R |
| X-Cotton |
X |
| X-Cotton (flex) |
K |
| J-Cotton |
J |
| J-Cotton (flex) |
M |
| J-Cotton (super flex) |
W |
| Combination light |
L |
| Segmentable fibre |
S |
| Fibre 0,4 mm |
N |
| Fibre 0,6 mm |
T |
| Fibre 0,8 mm |
P |
| Mushroom head |
U |
| Other |
Z |
