In Parts 1 and 2 of this three-part series, we talked about how the three main variables in heat pressing are temperature, time and pressure. We then went on to look at what to look for in a heat press to ensure you meet these conditions consistently.FULL STORY
Digital Decorating: Heat Transfer
Avoid Dye Migration During Heat Printing
Dye migration is a typical problem when it comes to decorating polyester. Generally, the darker or brighter the color, the more likely it is to occur.
This problem is a result of the dyes in the fabric being activated when exposed to heat. During the heat-printing process, these inks can bleed through your lettering, screen printing or transfer designs. You can test for dye migration by covering the garment with a kraft paper cover sheet and applying for 10 seconds with your heat press. With unstable dyes, you often will immediately see ink residue on the cover sheet.
If this occurs, look for products that have dye-blocking capabilities. Generally, this is spelled out in the product descriptions. Look for any of the following terms: “high opacity,” “opaque,” “blocks dye migration,” “for darks,” “low bleed” or “bleed resistant,” and “dye-inhibiting.”
Once you have chosen the material for your job, request a sample before purchasing the entire quantity. Dye migration does not always occur immediately. Apply your design and let it sit up to 24 hours. If the dye has not bled through your design, you can be confident that the material you have selected will work for your job.
Even the best dye-blocking heat-transfer materials may not work on some fabrics. There is a wide range of polyester fabrics in the textile industry. The dye process differs from one manufacturer to the next. For this reason, test your heat application. Taking a few minutes to do this before printing your entire job can save you time and money.
Peggy Elliott is learning and development manager for Stahls’, Sterling Heights, Mich. For more information, visit hotronix.com.
More Heat Transfer News
In Part 1 of our three-part series on heat presses, we looked at the basic design types and features apparel decorators want to keep in mind when considering a new system. In Part 2 we look at speciality presses for decorating caps and applying shirt labels, and also multi-function pressesFULL STORY
As people across the globe continue to work from home, their wardrobe staples have transitioned from dress pants and blazers to athleisure — think matching sweat suits, leggings and other lightweight apparel.FULL STORY