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Water Repellency Tester (Bundesmann Method)

Model

RT-101A

Reference standard

JIS L 1092;GB/T 14577;ISO 9865;BS EN 29865;DIN 53888standards

Use/Good point

This tester is performed in order to determine the water repellent of textile surface structures. This apparatus is also called the Bundesmann Rain Tester, already recognized as informative reference test method in the Japanese Industrial Standard.
Four specimens are simultaneously subjected to simulated rain in one testing cycle and also moved in the artificial shower throughout the test.
The underside of the specimens not exposed to the rain is subjected to regular rubbing action.
This test reproduces pretty accurately the conditions to which utility articles made from water repellent impregnated textiles are subjected in actual use.

Remarks

〈Option accessories〉
Centrifuge(with horizontal surface)・・・・・・・・・・・1set
Stand of test cup・・・・・・・・・・・・・・・・・・・・1set
〈Optional item〉
Sample cutter(for circular test piece of φ140㎜) ・・・1set

Spec

 RT-101A
Shower areaApprox. 1300㎝2
Number of water drop nozzlesApprox. 300pcs
Dropping rain capacity (per 100㎝2)100~300ml/min (with adjustable valve)
Test sample sizecircular piece(140㎜in diameter)
Test surface areaApprox. 80㎝2
Outer diameter of test cup100㎜
Attachment incline of test cup15゜to the central axis
Rotary speed of test cupApprox. 6times/min
Abrader size48㎜(long), 5㎜(wide)
Reciprocating speed of abraderApprox. 20times/min
Abrade pressure to test sampleApprox. 2.5N
Testing timeDigital display
Machine sizeApprox. φ80×220㎝
Machine weightApprox. 200㎏
Power sourceAC100V 50/60Hz