Leather Water Vapor Permeability Tester

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Productinformation

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: Italian standard for testing thepuncture resistanceof safety footwear.

UNI EN 13515: European standard specifyingabrasion resistancetests for protective footwear soles.

EN ISO 20344:6.6: International standard definingpuncture resistancetesting methods for safety shoes.

IUP 15: Standard for evaluatingpuncture-resistant propertiesof footwear materials.

BS 3144 Method 24: British standard forabrasion resistancetesting of leather and footwear components.

SLP 25: Standard protocol for assessingsafety shoe durabilityunder repetitive stress.

DIN 53333: German standard forpuncture resistancemeasurements in protective footwear.

ISO 17699: International standard forfootwear safety, including puncture and impact resistance.

DIN 53 429: German method forabrasion resistancetesting of rubber and plastics in footwear.

METODO - 309 WI 009: Brazilian standard forpuncture resistanceevaluation in safety footwear.

Applications

Leather Water Vapor 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

Test stations: 6;

Electronic timer for recording the testing times;

The fan blade: 3;

Dimension of fan blade: 75×90mm;

Angle between fan blades: 120°;

Gaps: 10±5mm;

Speed of fan: 1400r/min;

Rotaryspeed of specimen: 75r/min;

Diameter of sample holders: 30±1mm;

Diameter of fixtures: 30±1mm, helical;

Weight: 45kg;

Dimension: 350×570×450mm;

Power Consumption: 300W.

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