Hi-Vis factors are an essential part of workwear, especially in high-traffic areas and low visibility (i.e. inclement weather).
In different countries, there are different regulations for Hi-Vis clothing. In Europe, it is ENISO20471. In America, it is ANSI+ISEA+107. In Austria, it is AS/NZS 1906.
Today let’s take ENISO20471 as an example. It has a detailed request for the following aspects:
1.Requirements for Design.
2.Requirements for background material, non-fluorescent material and combined performance material.
3.Photometric performance requirements for retroreflective material combined performance material after physical exposure.
4.Other physical requirements.
You may say it’s easy to know the regulation. Yes, that’s right! But in order operation, there may still problems. All we focus on is the result of mass production.
Based on 16 years’ experience of Hi-Vis workwear order practice, today we will share with you the most important 5 dos and don'ts in order practice.
1.What certificates need to be collected from supplier?
To choose the correct suppliers, you have to collect the certificate. One is ENISO20471 for Hi-Vis fabric and reflective band, with validity within 5 years, but preferably within 3 years.
The other one is Oeko-tex 100 certification for all materials and accessories, with validity within 1 year.
★Pay attention to the certificate validity, the newer, the better.
★For ENISO20471, not only certificate, but also test report is needed.
2.What to do before the final design?
Before the final design and size chart, please take the smallest size sample to check the reflective area and other design requests by yourself. If it can meet the area request, other bigger sizes will be all ok. If not ok, we still have a chance to improve the design or size chart. Or we can mark the smallest size as ENISO20471 class 2, but other bigger size as ENISO20471 class3, etc.
★Self-checking before the final design.
★Take the smallest size sample for checking.
3.How to select Hi-Vis color swatches?
The client can nominate standard color swatches. But before making counter color swatches, suppliers must test the standard color swatches themselves. Of course, the chromatic coordinates must be within the area by the coordinates specified in the standard EN20471. But this is far from enough.
In order to practice, the mass production fabric must be some slight color difference compared with the standard color swatches. To make sure the result of mass production, the chromatic coordinates must be in the center part of the request area. In this case, we have some color difference tolerance for mass production. More safe.
As an experienced supplier, we normally supply the Hi-Vis color swathes which we already used and tested many times. The client can choose from the A B C swathes. That is more efficient and easy.
★ Pre-test the Hi-Vis color swathes.
★ Make sure chromatic coordinates in the center part of the request area.
4.Have you kept an eye on the non-fluorescent material?
This is an easily overlooked point. But in order to practice, it may cause a big problem. I mean the colorfastness, especially when Hi-Vis color combines with dark color like navy or black. Even the navy or black can meet class 4 for request colorfastness, there may still risk the dark color stain the Hi-Vis color after washing. It may cause the fail test for the final ENISO20471 test, or claim from consumers. So please do make a washing test before fabric approval.
There is a professional way to avoid this issue. If you are interested in it, we can share our experience personally.
★ Non-fluorescent material must pass class 4 to request colorfastness.
★ Do a washing test to check the color stain issue.
5.How to make sure the bulk fabric is correct without fail.
No other way, but only test test test. This is the last chance.
Before delivering fabric to the garment factory, our QC go-to fabric factory.
For Hi-Vis fabric, we take 1m randomly from each dying lot. Then make the Hi-Vis test, GSM test, color fastness test, etc in the lab. If any lot is not ok, then remake or drop it.
For non-fluorescent fabric, we also take 1m randomly from each dying lot to test in the lab. If there are navy or black color combinations, we will make a washing test to check whether it stains obviously or not.
Only if the fabric can pass all request test can be delivered to the garment factory.
★ Test before mass fabric delivery.
★ Test Hi-Vis, GSM, colorfastness, and all other requested factors to keep the last defense line.
Besides the above 5 remarks, there are still other details which seem easy but we do have to pay attention to. After 16 years’ experience in Hi-Vis workwear, we have learned more lessons and experience. If you have some issue, pls contact us. We’d like to share more with you. Tks for the view!
Greenland, your professional partner for Hi-Vis workwear in China.
Post time: Jan-13-2021