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HAVER & BOECKER
RPD, Reverse Plain Dutch Weave
TRD, Twilled Reverse Dutch Weave
- RPD Reverse Plain Dutch Weave
- TRD Twilled Reverse Dutch Weave
- RPD Reverse Plain Dutch Weave (above), TRD Twilled Reverse Dutch Weave (below)
RPD
Reverse Plain Dutch Weave.
TRD
Twilled Reverse Dutch Weave.
RPD has warp wires laid as close as possible one to another with relatively thin diameters, while the weft wires are very strong so called reversed weave.
TRD is also a Reversed Dutch Twilled type, although in a twilled form. The warp wires are distributed as with RPD, although the weft wires are knocked up in a twilled weave pattern, so as not to deform the warp wires too much.
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HB-Code | Mesh | Micron Retention | Micron Retention | Equation Factors for | Tensile Strength | Porosity theor. | Weight | Cloth Thickness | ||
|
| nominal | absolute | Permeability Performance | Warp | Weft |
|
|
| |
|
| μ | μ | Y | M | N | N | % | kg/m2 | mm |
RPD 15 | 720x150 | 15 | 16- 20 | 35.63 | 0.01726 | 240 | 400 | 45 | 0.65 | 0.15 |
RPD 17 | 630x130 | 17 | 20- 24 | 30.95 | 0.02967 | 210 | 480 | 51 | 0.85 | 0.22 |
RPD 25 | 600x100 | 25 | 34- 38 | 10.14 | 0.01751 | 205 | 425 | 56 | 0.80 | 0.23 |
RPD 40 | 290x 75 | 40 | 53- 58 | 12.94 | 0.03460 | 540 | 700 | 51 | 1.55 | 0.40 |
RPD 60 | 175x 50 | 60 | 67- 75 | 8.29 | 0.03479 | 570 | 1200 | 47 | 2.40 | 0.57 |
TRD 75 | 400x120 | 75 | 75- 80 | 4.00 | 0.00520 | 360 | 230 | 62 | 0.73 | 0.24 |
RPD 80 | 130x 35 | 80 | 95-105 | 8.25 | 0.01614 | 860 | 1250 | 49 | 3.10 | 0.77 |
RPD 85 | 175x 37 | 85 | 100-106 | 3.81 | 0.00255 | 780 | 720 | 54 | 2.10 | 0.57 |
RPD 90 | 170x 40 | 90 | 106-118 | 4.03 | 0.01569 | 890 | 770 | 54 | 2.10 | 0.57 |
TRD 125 | 260x 40 | 125 | 112-125 | 1.12 | 0.16700 | 2220 | 580 | 54 | 2.25 | 0.62 |
RPD 400 | 84x 14 |
| 450-530 | 0.33 | 0.01028 | 1630 | 1160 | 62 | 3.50 | 1.15 |
TRD 400 | 132x 17 |
| 400-450 | 1.00 | 0.01686 | 4500 | 760 | 57 | 4.65 | 1.35 |
RPD 500 | 80x 14 |
| 560-630 | 0.10 | 0.01123 | 1550 | 1160 | 64 | 3.40 | 1.18 |
TRD 500 | 72x 15 |
| 500-600 | 0.02 | 0.01567 | 5330 | 810 | 57 | 6.35 | 1.85 |
Ohter specifications upon request
Notes on Table :
The following indications are based on approximate values. The actual permeability performance depends on the working conditions. For single applications it might be necessary to carry out a technical feasibility test.
Column 5: The equation for filter performance is in the form DP = Y . V + M . V2 [V = airflow in cm/sec, DP = differential pressure in mbar . 10-3 determined with air at 20C, 1013 mbar.
Column 6: Tensile strength in Newton (N) of wire weave section 10 mm wide, 100 mm long.
Column 8: Weight kg/m2, stainless steel 1.4301
