When purchasing work clothes and sweaters, how to ensure that the color fastness does not fade?

What are companies most afraid of when purchasing workwear sweaters? It's not that the price is expensive, but that employees will fade and string colors after wearing them twice, and white clothes will be dyed into flower clothes, which will be too cheap in front of customers.?

Especially dark navy blue, black, burgundy and other commonly used colors in enterprises. Once the color fastness is not up to standard, the color fades seriously after washing, and the whole batch of goods may be scrapped. Today, from 4 key links, help you thoroughly understand how to lock high-color fastness sweaters.

Step 1: Look at the fabric composition, don't just focus on the gram weight

Many people choose sweaters only based on gram weight, thinking that the thicker the better. But color fastness has a great relationship with fabric fibers.

The pure cotton sweater is comfortable, but if the dark pure cotton reactive dye is not in place, the wet friction fastness is easy to overturn. Polyester-cotton blends (such as CVC, TC) are more stable in color fastness, because the polyester component needs to be dyed with disperse dyes at high temperature and high pressure, and the color fastness is naturally 1-2 levels higher than that of pure cotton reactive dyeing.

If the company wants to wash frequently, it is recommended to choose polyester-cotton blends or pure polyester fabrics, especially dark ones, which greatly reduce the risk of fading.

Step 2: Keep an eye on the dye type and dyeing process

The same blue, with different dyes, the color fastness varies widely.

- Reactive dyes: commonly used in pure cotton, bright colors, but need to be fully soaped to fix the color, otherwise there will be many floating colors

- Disperse dyes: special for polyester, color fastness after high temperature and high pressure dyeing can reach more than 4 grades

- Paint dyeing: low cost, but poor friction fastness, work clothes sweaters are not recommended

When purchasing, ask the supplier directly: "What dye is used for this sweater? Is there any high temperature and high pressure dyeing?" If the other party falters, it will pass directly.

Step 3: Ask for a color fastness test and read the report to speak

Don't believe verbal promises, look at the test data. Work clothes and sweaters focus on 3 items:

✅ Color fastness to water: ≥ 3-4 grades

✅ Color fastness to sweat stains: ≥ 3-4 grades

✅ Color fastness to friction: dry friction ≥ 4, wet friction ≥ 3

Wet friction fastness is the most easily overlooked, but it is precisely the culprit of dark sweaters fading. When purchasing, suppliers are required to provide third-party test reports (such as SGS, ITS), or make samples for washing tests first.

Step 4: Choose the right supplier and lock in quality from the source

After saying so much, the key is to find the right manufacturer. Shenzhen Yasenman Apparel Co., Ltd. has been specializing in the customization of enterprise workwear sweaters for many years. From the time the fabric is put into storage, the color fastness index is locked. All dark models use high temperature and high pressure dyeing + full color fixing process. Before leaving the factory, three tests of water resistance, sweat resistance and friction resistance are done to ensure that 50 washes do not fade or string colors.

They support proofing first, washing and testing first, and then placing orders in batches. There is no need to gamble luck in corporate procurement. Shenzhen Yasenman Apparel Co., Ltd. also provides free design and fast shipping services. The Pearl River Delta can visit the factory, write the color fastness into the contract, and pay for fading.

Finally, I will give you a shopping pit avoidance list:

? Dark sweaters are preferred polyester and cotton blends

Ask about dye types and dyeing process

? Ask for a color fastness test report

? Make a sample for washing test first

The contract indicates the color fastness standard and compensation terms

Work clothes and sweaters represent the corporate image, and fading is no small matter. Follow these 4 steps, and the purchase will not step on thunder.?