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Linear Perforations
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Perforation rate / m²
| Counterbalancing | |||
| Face | ∅12 E = 32 / 16 |
∅12 E = 20 / 20 |
∅12 E = 40 / 22 |
| RP4 12A 1 = 4 / E = 32 31 grooves / m² |
Face 9.4 % Contreface 22,1 % |
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| RP4 12E 1 = 4 / E = 20 49 grooves / m² |
Face 12 % Contreface 28,3 % |
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| RP4 12C 1 = 4 / E = 40 49 grooves / m² |
Face 6 % Contreface 14,1 % |
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Sloted Perforations
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Perforation rate / m²
| Width of grooves in mm(1) | |||
| 6 | 8 | 10 | |
| L = 40 / E = 20 / P = 24 75 grooves / m² |
18,15% | 23,93% | 25,57% |
| L = 98 / E = 32 / P = 52 186 grooves / m² |
12,09% | 16,05% | 19,97% |
| RP4 12C 1 = 4 / E = 40 49 grooves / m² |
6,04% | 8, 02% | 9, 98% |
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Round Perforations
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Perforation rate / m²
| Hole diameter in mm² | ||||
| 3/12(1) | 6(2) | 8(2) | 10(2) | |
| E = 16 mm/ 3725 holes / m² |
2,66% | 10,62% | 18,9% | |
| E = 20 mm 2401 holes / m² |
1,70% | 6,8% | 12,1% | 18,9% |
| E = 32 mm 900 holes / m² |
0,66% | 2,66% | 4,72% | 7,37% |
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