Run test
The run-off is determined as the amount of liquid that runs down a test piece. The test method is designed to compare nonwovens and is not intended to simulate in use conditions.
Test Method
Under standard conditions, a specified amount of simulated urine is applied to a sample. The nonwoven specimen is placed on a standard absorbent medium on an inclined plane. The inclination of the plane can be set to either 25° or 10°. The dosing equipment delivers 25 grams of the test liquid in 4 seconds in a steady stream down a glass tube.
The glass tube is positioned above the reference line on the inclined table. Run-off liquid is collected by a standard receiver pad, located in a support tray at the base of the incline.
The Wira Run Test Apparatus forms an inclined plane of 25° for testing hydrophilic nonwovens and can be adjusted to 10° for testing hydrophobic nonwovens. A balance is required to weigh the receiver pad to determine how much of the test liquid runs off the specimen. Timers and balances are available as additional items.
Key Features
✔ Acrylic run off table
✔ 25° or 10° incline
✔ Dosing equipment
✔ Flow rate regulated by compressed air
✔Harmonized test method
Dimensions: Run-off table - 200mm (W) x 465mm (D) x 545mm (H) Dispenser - 220mm (W) x 210mm (D) x 67mm (H) Power: Specify 220 VAC or 110 VAC, 100 Watts
Standards: Edana 152.2 (02), NWSP 080.9.R1, ISO 9073-11
Order Code RTR:001
Stress crack apparatus
Determines the susceptibility of polyolefin geomembrane material to stress-cracking
The Wira Stress Crack Apparatus subjects Polyolefin geomembrane sheet material to a contant tensile load under accelerated environmental conditions. The dumbbell shaped test specimens are notched using the Precision Notching Device supplied. The samples are then placed on the test apparatus and a load is applied by means of canisters containing lead shot on a lever mechanism. The samples are then immersed in a tank containing a surface- active reagent, which is maintained at an elevated temperature of 50°C. The tank is lowered and raised by means of an electric motor. The time to failure is recorded by means of individual timers for each of the specimens. The bath and the sample mounting rig are manufactured from stainless steel. The temperature of the reagent is maintained at the correct temperature by a means of a solid state temperature controller and a heater in the bottom of the tank. Covers fitted over the tank reduce the evaporation from the tank. The reagent is circulated within the tank by means of a pump, this maintains uniform temperature and uniform concentration. The level switch inside the tank ensures that the heater and pump are switched off if the level fluid drops below a specified level. An additional level switch can be added as an option to control a top up pump to maintain the level inside the tank.
Key Features
✔ Can test 20 specimens at a time
✔ Stainless steel bath
✔ Solid state temperature controller
✔ Circulating pump
✔ Automatic switch off if fluid level drops
✔ Cover on bath to reduce evaporation
✔ Removable weight canisters
✔ Digital timers and micro switches
✔ Motorised lifting mechanism for the bath
Dimensions: 1600 x 1400 x 520 mm Power consumtpion: 220 - 240 Volts AC, 50 Hz, 2.5 kW
Standards: ASTM D5397-20, EN 14576:2005
Order Code SCA:001
HYDROSTATIC HEAD TESTER
Determine the resistance to water penetration
The Hydrostatic Head Tester is used to determine the resistance to water penetration of fabrics, technical textiles, bonded, coated, elastane, goretex, hi-tech membranes and other materials subjected to hydrostatic pressure expressed in cm H2O.
The water proof limits are achieved only after detecting the first three drops on the sample surface in compliance with standards.
The HMI Touch Screen is used by the operator to set the test parameters, monitor the test, save results and export files (.CSV) through the USB communication port.
The sample is locked between test area flanges by means of a manual closing system with handles or pneumatic clamping at request.
Webserver and application software for user management, statistical evaluations and trend analysis for test reports.
Key Features
✔ Halogen lamp for visual inspection
✔ ASCII printer to get quick paper reports of results
✔ Files can be saved easily through USB port
✔ Webserver and application software
✔ Interchangeable test areas of 10, 26 and 28cm2 on request
✔ Instrument certificate by accredited institute or ISO on request
Dimensions: 540 x 540 x 1700 mm
Weight: 70 kg
Power Supply: 110/230 VAC - 50/60 HZ
Standards: UNI EN ISO 20811, UNI 4818, DIN 53886, ISO 811
Order Code: HHT:001
WATER VAPOUR PERMEABILITY TESTER
For testing water vapour permeable apparel fabrics
The Water Vapour Permeability Test Machine is designed to measure the resistance of breathable fabrics to water vapour penetration by sealing the fabrics to water filled containers, weighing the container and rotating at 2 RPM in a controlled atmosphere over a specified period of time. The containers are re-weighed to determine the water vapour.
All surface areas that are likely to be exposed to water are constructed in 316 stainless steel and HE-30 aluminium. All rotating shafts run on angular contact bearings for smooth maintenance free running. Water containers and matching ring tops are engraved for weight indentification. The compact electric drive unit is situated a metre away from the turntable to prevent any heat from the electric motor affecting the materials under test.
Key Features
✔ Water containers: 8 cup or 16 cup models available
✔ Stainless steel / aluminium construction
✔ Separate electric drive unit
✔ Conforms to BS 7209 Standard
Dimensions: 220mm (H) x 420mm (W) x 420mm (D) Power consumtpion: 220 - 240 Volts AC, 50 Hz
Order Codes:
WVP:001 - 8 cup capacity
WVP:002 - 16 cup capacity
BENDING LENGTH TESTER
Tests resistance to water after degradation caused by flexing
The Wira Bending Length Tester is used to determine the bending length of fabrics, including nonwoven fabrics. From this the flexural rigidity can be calculated. The apparatus is manufactured from clear Perspex.
Test Method
Test pieces are cut from the fabric measuring 250 x 25 mm. Each test piece is tested from both ends and with both sides uppermost (4 tests in total).
The strip is placed on the platform with the leading edge of the fabric in line with the front edge of the platform. The steel ruler is placed on top of the fabric. The ruler and fabric are moved forwards together until the fabric extends down in line with the engraved markings. The distance moved is then read from the ruler.
Key Features
✔ Simple operation
✔ Cantilever method
✔ Suitable for textile fabrics and nonwoven fabrics
✔ Quick and repeatable results
Standards: ASTM D1388 Method A, BS 3356, ISO 9073-7: 1995, EDANA Test Method 50.5:99
Order Code: BLT:001
CRUMPLE FLEX TESTER
Tests resistance to water after degradation caused by flexing
The Crumple Flex Test Machine reproduces the wear of coated technical fabrics. During normal use, these fabrics are subjected to twisting and flexing and it is important that the critical properties of the fabrics, such as water resistance, are not degraded.
The Crumple Flex Test Machine uses a rotating and crumpling motion to test the extent to which a sample is resistant to water after degradation caused by flexing. Tubes of sample fabric are easily secured and removed from the tester heads with circular clamps. Complete with electronic counter and auto stop when the preset total is reached.
Test Method
A sample of fabric 220mm x 190mm is stitched to create a tube. The clamp heads are taken out of the machine and placed into a special mounting jig and the cylinder of fabric is secured to the heads. The sample is then transferred to the test machine. During operation, one head is twisted by 87° and the other head moves forwards and backwards.
A perspex cover allows the sample to be viewed during the test and an electronic counter will stop the test after a preset number of flexes. The sample is then removed and tested for water resistance or other properties. The Crumple Flex Test Machine can test four samples together.
Dimensions: 400mm (H) x 520mm (W) x 270mm (D) Weight: 52 kgs Power Consumption: 200W
Standards: BS 3424-9, ISO 7854: 1995
Order Code CRF:001
