Leather Water Vapor Permeability Testing Machine
The vaporpermeability of leather is evaluated by means of measuring the weight of water-vapor that permeates to specimen perunit time and per unitarea. The main functional components includes: testing holder clamp, ventilation fan, control panel with functions of switch, time setting and recording.
The machine has six separate test stations on a rotary table and each one has a sample holder. Silica gel desiccant is placed in the holder and the test material is placed over the neck of the holder and secured by a screw top. After weighing each holder, complete with silica gel and sample material, the holders are placed and locked into the rotary mechanism.
After 7-8 hours the complete holder is weighed again and the gained weight is used to determine the degree of permeability. It is essential that the entire operation is carried out in a conditioned atmosphere of 20°C and 65% per cent relative humidity. In addition to the standard equipment, the tester is also supplied with a built-in timer to record the number of hours that testing has been carried out.
Standards
UNI EN IUP/15. UNI EN 13515.
EN ISO 20344: 6.6. IUP 15. BS 3144 Method 24.
SLP 25.DIN 53333. ISO 17699.
DIN 53 429. METODO - 309 WI 009
Applications
Shoes water vapour permeability testeris mainly applicable to leathers and textiles used in footwear uppers and clothing where it gives a measure of the ability to remove perspiration from the surface of the wearer's skin.The tester is used to determine the amount of water vapour a material will transmit through its structure in a specified time.
Technical Parameters
1. Temperature Range: 20-60°C
2. Humidity Range: 40-95% (no-load)
3. Temperature Accuracy: ±0.5°C (no-load)
4. Humidity Accuracy: ±3% (no-load)
5. Chiller: Air-cooled, sealed compression type
6. Cooler: Fin-type condenser
7. Humidifier: Pot-type humidifier (with burnout preventer)
8. Heater: Fin-type radiator (with overheat preventer)
9. Blower: Fan (upper and lower)
10. Air Speed Adjustment Range: 0.5-1.5 m/s
11. Rotating Frame: Two upper and lower stages (270 mm diameter)
12. Indoor Dimensions: Approximately W400 × D360 × H500 mm
13. Power Supply: AC 220V 50Hz
14. External Dimensions: Approximately W1100 × D550 × H1470 mm
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