Bundesmann Water Repellency Tester

The device is a practical test method for rainfall, applicable to clothing products, including waterproof cloth. It is used for measuring the wet-ability of the surface of the sample used in the natural rain, the amount of water absorbed, and the outflow rate of the permeated fabric, and evaluating the water repellency. The instrument consists of a rainfall portion and a test driving portion. The rainfall section consists of 300 identical drips and the baffle when the test isnrsquo;t going on that rainfall from the side of the flow out. The test driving portion consists of four test cups with an outer diameter of 10 cm. The test cup is mounted at 15 deg; from the vertical and the test cup is composed of a sample installation box and a cross-shaped wiper that the underside of the sample and rub with each other. The test cup is rotated around the center of the instrument and fixed to the drive portion.

Application
The device is a practical test method for rainfall, applicable to clothing products, including waterproof cloth.

Standards
JIS L 1092 Test method for water resistance of textiles
IOS 14577 Bundesmann rain test method for fabric water repellency determination
ISO 9865 Textiles - Determination of water repellency of fabrics using the Bundesmann rain test
BS EN 29865 Textiles - Determination of the water repellency of fabrics using the Bundesmann rain test
DIN53888 Textiles - Determination of water resistant permeability - Hydrostatic test

Feature
uml; The rainfall portion consists of 300 identical drips.
uml; The test driving portion consists of four test cups with an outer diameter of 10 cm.
uml; The test cup is mounted at 15 deg; from the vertical.
uml; The test cup is composed of a sample installation box and a cross-shaped wiper that the underside of the sample and rub with each other.
uml; The test cup is rotated around the center of the instrument and fixed to the drive portion.

Technical Parameters

Items	Parameters
Rainfall area	about 1300 cm²
Drips	300 pieces
Rainfall (per 100 cm2)	100～300ml／min (adjust by valve)
Sample size	Ф 140mm
Test area	about 80 cm²
Test sample cup	100mm
Test sample cup mounting angle	15 degrees
Test sample cup rotation speed	about 6 degrees / min
Cross wiper specifications	arm length 48mm, width 5mm
Rotate speed of the wiper	about 20 times / min
The friction pressure of the wiper	about 2.5N
Test time	screen shows
Specification of device shape	about phi;80times;220cm
Weight	about 200kg
Power supply	AC 220V 50Hz 200W