Set the temperature too high and you may have heat press scorch marks from the melting of polyester fibers. So what’s been added to make polyester repel water so well? Plastic, of course.Īnd by that nature, the likelihood of scorching or burning your garment with a heat press increases. That’s why it’s a favorite amongst athletes and adventurous outdoor types who prefer to wear dri-fit tees and sports apparel like jerseys. Unlike cotton, this man-made fabric is highly ‘hydrophobic’, which means it’s super water-resistant. Not only is it durable, it also doesn’t wrinkle and has almost zero shrinkage or stretching regardless of what kind of extreme wash and dry cycle you put it through. We can all agree that polyester has certain qualities which makes it a great choice for t-shirts. Some transfers may require either higher temperatures or longer time under heat, and this increases the chance of markings after a press. When it comes down to it, it’s better to let the customer wash it to their liking.Īnother thing to add, If you’re printing vinyl or with special types of transfers like flex or flock, make sure they are specifically for cotton tees. Not only do different people have different reactions to detergents and such, but a pre-washed t-shirt suggests that it was dirty before. In my opinion and it seems to be the consensus between us shop owners, I suggest never selling a pre-washed t-shirt. However, this may not work for folks running a business. Therefore, using the preheating method on darker colors is highly recommended.Īnother way to remove heat press marks on cotton is to give it a good wash. This will remove all the moisture and it works especially well on light colored fabrics like white, yellow and light blue.Īs a side note, darker colors such as red, royal blue, purple, and army green tend to have more noticeable markings. How to remove heat press marks on cottonĪn old trick in the book to avoid these markings is to preheat your garment using a cover sheet or a teflon coated sheet. But generally you will start to see it returning to normal within 10 minutes of your shirt cooling down. It may take a little longer in a dry climate than a humid area. How fast it happens really depends on the climate you’re in. Since moisture exists in the air, cotton absorbs it naturally and all it takes is time before the darkened area returns to its original state. The good news is, this discoloration isn’t permanent. Not only will you visibly see this as steam, you’ll also notice a darkened impression or discoloration to the area where it’s been pressed. When heat is applied, the moisture evaporates and is released into the air as vapor. The reason why you see heat press marks appear on cotton tees is due to the moisture found in the cotton fibers. Let’s get to it! 100% Regular and Ringspun Cotton FRESH_PRINTS/t-shirtforumsĬotton is by far the most common fabric for t-shirts, and you’ll be glad to know that removing heat press marks on cotton is the easiest of all.īut first, you’ll need to understand the science behind it. Because once you get the two right, by extension, the rest of it – heat press settings, transfer paper, pressure, etc – will follow suit. I’ll cover each of them and also suggest troubleshooting ideas that will help you figure out your own solution.
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