REFOND Textile Testing Equipment Bundesmann Water Repellency Tester
Product Specifications
Bundesmann Water Repellency Tester
Centrifuge
- Rotation speed: 700 rpm
- Time required to attain speed of 700 rpm from 0 and vice versa:
1-2s Mounting surface diameter: 175±0.1mm
- Number of ribs on disc: 50
- Height of ribs: 1±0.1mm
- Length of four steel pins: 6±0.5mm
Spraying Nozzles:
Distance from center of disc to steel pin: 60mm Total mass of disc
and shaft: 410±2g
Nozzles distributed area: 1300 ± 6.5 cm² (Dia. 406±2mm), 300
nozzles equally distributed over a circular horizontal surface.
Number of nozzles: 300pcs
Water drop diameter: approximately 4mm
Vertical distance between the drop former and the center of the
specimen surface: 1500mm ± 7.5mm
Testing Device:
Number of test cups: 4 units
Test cup carrier rotation speed: 6rpm ± 0.5rpm Wiper assembly
rotation speed: 20rpm ± 0.5rpm Wiper assembly rotation angle: 100º
± 1.0 º
Force the wiper assembly pressed against the underside of the
specimen: approximately 250cN length of the wiper arm: 48mm Width
of the wiper arm: 5mm
Outer diameter of the test cup: 100 ± 0.05mm Exposed area of the
clamped specimen: 80cm2 Air vent diameter of the test cup: 7 ± 1mm
Angle the centerline of test cup is Inclined from the vertical: 15
± 1.0°
The flow rate of the water drop (each test cup receive water within
a specified time): (200ml ± 10ml)/2.5min.
Product Instruction
Bundesmann Water Repellency Tester determines the water resistance
of fabrics to the simulated rain under the moving condition. Fabric
is held on the test cup under which there is rain wipers which is
rotating and rub the fabric underside. The amount of the water
penetrates the fabric into the test cup can be measured. And the
amount of water absorbed by the fabric can be weighed and
determined.
RF4468 consists of 4 specimen holders of 100mm diameter cups. Rain
is produced by spraying nozzles and falls down from 1500mm height
from the fabrics.
Applications
Outdoor sportswear, coated fabrics, raincoats, diving suits, etc.
Standards
| ISO9865 | DIN EN 29865 | GB/T14577 |
| BS EN 29865 | | |
Order Information
RF4468N Bundesmann Water Repellency Tester
RF4468N/1 Test Cup Set
RF4468C Centrifuge
