Cultural shirt black background printing white characters yellow? Dark fabric printing tips

Have you also encountered this situation?

The custom-made cultural shirt with white characters on a black background was so cool that I had no friends when I first got it. As a result, after wearing it a few times and washing it a few times, the white print began to turn yellow, gray, and even crack. The original bright logo instantly turned into "old goods", looking cheap and sloppy.?

Don't worry, this is not actually a problem with the quality of the clothes, but the wrong process details of dark fabric printing. Today, I will turn out the dry goods at the bottom of the press box and explain to you at one time from the process principle to maintenance tips.?

Why do white characters turn yellow on a black background?

This is not an illusion, it is a chemical principle. Common white printing often uses a glue or water slurry process. The glue has strong coverage, but long-term exposure to ultraviolet rays, sweat or high temperature washing will oxidize and turn yellow. Although the water slurry is breathable, the white pigment does not show enough color on the dark cloth, and it is easy to reveal the color of the base cloth and look gray.

More importantly, in order to save costs, many small workshops use poor quality white glue or insufficient curing temperature, resulting in poor adhesion of the pigment layer. After washing a few times, the pigment particles fall off, revealing the black of the base cloth, which is visually "yellow and gray".??

The "Golden Rule" of Dark Fabric Printing

If you want to customize a cultural shirt with white letters on a black background and want it to last as long as new, be sure to remember the following three tips.

1️⃣ Process selection: preferred "silk screen printing + anti-sublimation"

Dark fabrics, especially black, are most prone to "transparent" and "yellowing". When customizing, be sure to ask merchants to use an anti-sublimation silk screen printing process. This process will add a layer of isolation between the white ink layer and the fabric, which is equivalent to wearing an "invisible underwear" for the clothes, which can effectively block the chemical reaction between the dye in the fabric and the white pigment and prevent yellowing. At the same time, choose a high solid content of special white pulp to correct the whiteness.

2️⃣ Fabric matching: avoid pure cotton short boards

Pure cotton absorbs sweat and is breathable, but its weakness is that it is not resistant to alkali and easy to shrink. When customizing, it is recommended to choose combed cotton or cotton-polyester blended fabrics with a gram weight of more than 200g. Heavy cotton has a tight structure, which can reduce the penetration of printing into the fiber gap; while cotton-polyester blends are more anti-wrinkle, not easy to deform, and can better protect the printing layer. If you pursue the ultimate quality, you can try Yasen Man's exclusive custom fabrics. They use high-count and high-density weaving, and the base is extremely flat, which can greatly improve the adhesion and color rendering of printing.?

3️⃣ Curing temperature: not the hotter the better

Many factories will adjust the drying temperature very high in order to meet the construction period. But white ink is most afraid of high temperature and quick baking, which can easily lead to surface caramelization and yellowing. The correct way should be low temperature and slow baking, such as between 120 ° C and 130 ° C, baking at a constant speed for 3-5 minutes, so that the ink can fully cure from the inside to the outside. The film formed in this way is both flexible and washable, and will not fade or yellow no matter how you rub it.?

Daily maintenance: no matter how good the craftsmanship is, I am afraid of "doing"

Even if you use the best technology, if the washing method is wrong, it will accelerate aging. Here are two hard indicators: the water temperature should not exceed 30 ° C, and the reverse side should be washed. Never use laundry detergent containing bleach, and do not soak in hot water. Do not expose to the sun after washing. It is best to dry in the shade. UV rays are the number one killer of printing.☀️❌

Finally, let's be honest.

Many custom solutions on the market are ridiculously cheap, but they use inferior glue or heat transfer. The white printing of heat transfer will definitely turn yellow and peel in less than half a year. And professional custom brands like Yasenman insist on using imported environmentally friendly inks + automatic screen printing lines to ensure that the printing thickness, whiteness and fastness of each piece of clothing meet the standard. More importantly, they will adjust the curing parameters according to the characteristics of the fabric to truly achieve "tailor-made". If you don't want the cultural shirt to become a "cultural shirt accident", choosing the right brand is 100 times more important than choosing the right price.?

To summarize:

* Process: Anti-sublimation screen printing, extra white paste

* Fabric: Heavy combed cotton or cotton polyester blend

* Curing: low temperature slow baking, complete curing

* Maintenance: below 30 ° C, the reverse side is dry in the shade

Remember, the white characters on the black shirt are the first impression of your attitude. Don't let yellowing ruin your aura.