Unitec-240 (Hi-Viz Yellow) certified to EN 20471

posted in: News | 0

May 2019, XM Textiles polycotton fabric Unitec-240 (Hi-Viz yellow) has been successfully tested and certified to EN 20471 (High visibility clothing – Test methods and requirements).

Unitec-240 is a high quality polyester cotton twill fabric suitable for winter and summer uniform. It is widely used for making workwear jackets, trousers and overalls.

The Standard EN 20471:2013 specifies requirements for high visibility clothing which is capable of visually signaling the user’s presence. The high visibility clothing is intended to provide conspicuity of the wearer in any light condition when viewed by operators of vehicles or other mechanized equipment during daylight conditions and under illumination of headlights in the dark.

Performance requirements are included for colour and retroreflection as well as for the minimum areas and for the placement of the materials in protective clothing.
According to standard EN 20471 has been successfully passed all the following tests:

 

1. DETERMINATION OF COORDINATES (X,Y,Y) 
The chromatic coordinates must be situated within the area defined by the coordinates specified in the Standard EN ISO 20471:2013/A1:2016 and the luminance factor shall exceed 0,70 specified in the Standard EN ISO 20471:2013/A1:2016.
Alba passed the test with the following results:

• Original: 0,9077- PASS
• After exposure to Xenon light: 0,8825 – PASS
• After 5 washing cycles at 60ºC + tumble drying: 0,9367 – PASS

 

2. COLOUR FASTNESS TO RUBBING
The limit set by the Standard EN ISO 20471:2013/A1:2016 for color fastness to rubbing is 4, in dry.

• Warp/Weft (dry staining): 4-5 – PASS

 

3. COLOUR FASTNESS TO PERSPIRATION
The limit set by the Standard EN ISO 20471:2013/A1:2016 point (5.3.2) for testing of colour fastness to perspiration, is 4 for degradation and 4 for staining

ALKALINE SOLUTION

• change in colour: 5 – PASS
• staining (cotton/polyester): 4-5 – PASS

ACID SOLUTION

• change in colour: 5 – PASS
• staining (cotton/polyester): 4-5 – PASS

 

4. COLOUR FASTNESS TO DOMESTIC AND COMMERCIAL LAUNDERING
The limit set by the Standard EN ISO 20471:2013/A1:2016 point (5.3.3) for testing of colour fastness to washing, is 4-5 for degradation and 4 for staining.

• change in colour: 5 – PASS
• staining (cotton/polyester): 4-5/4 – PASS

 

5. DETERMINATION OF BREAKING STRENGTH AND ELONGATION
The relative expanded uncertainty of Tensile strength resistance is ±5% assay value of the measured, for a probability of coverage of 95%.
The tensile strength of woven fabrics must resist a breaking load in both directions ≥ 100 N.

• Warp:1600N – PASS
• Weft: 660N – PASS

Elongation

• Warp: 17.5% – PASS
• Weft: 17.5% – PASS

 

6. WATER VAPOUR RESISTANCE
According to the requirements of EN ISO 20471:2013+EN ISO 20471:2013/A1:2016, if the water vapor resistance is higher than 5 m2Pa/W is to be measured the thermal resistance to determinate the water vapor permeability index. The water vapor permeability index to should be ≥ 0,15.

Water vapour resistance Ret (m2Pa/W): 4.31 – PASS

 

7. DETERMINATION OF PH VALUE

In accordance with Standard EN ISO 13688:2013, the pH value shall be greater than 3.5, and less than 9.5

pH = 6,40 – PASS

You can find all certificates and additional information on the product page.