Also test your fabric to see if it can withstand higher temperatures than recommended. In that case, you will have to test your HTV at lower temperatures. You may find 270-280 oF too high to press on “do not iron” and “iron on low setting” fabrics. Siser recommends that you lower your heat press temperature to 280 oF as the starting point for using their HTV with sensitive fabrics. EasyWeed Extra and EasyReflective can also apply to nylon.EasyWeed Stretch can apply to lycra/spandex.all HTV types except EasyWeed Sub Block (polyester only) list compatibity with polyester, poly/cotton blends, and cotton.When applying Siser HTV on heat-sensitive polyester, start at 270-280 oF Not all HTV is compatible with every fabric! 5. Siser, Cricut, Specialty Materials (Thermoflex), Stahls, and StarCraft all indicate which types of their HTV can be applied to specific fabrics. All major brands of HTV include recommended time and temperature settings, and many include specific instructions for different fabrics. You should always check the manufacturer’s guidelines before applying HTV. Choose the right kind of HTV for polyester Test how your vinyl and your fabric perform at the lowered temperature and the extended time you choose. Press for 15-20 seconds instead of the usual 10-15 seconds at 305 oF.Įvery HTV and fabric combination will be different. If you reduce your heat press temperature, prepare to press your HTV for longer than normally recommended by the manufacturer.įor example, if you want to press regular Siser Easyweed on a heat-sensitive polyester garment, set your heat press at 270-280 oF. You can compensate for lower heat with longer dwell time However, if your fabric’s label says do not iron or iron low temp, you will likely have to apply your HTV below the usual recommended temperature. In general, if your polyester item’s label says iron on medium or high setting, use the HTV manufacturer’s normal recommended time and temperature settings. ) = Iron at maximum temperature of 392 oF/200 oC.) = Iron at maximum temperature of 302 oF/150 oC.) = Iron at maximum temperature of 230 oF/110 oC.No dots (Do not iron) = According to GINETEX, “ Irreversible changes must be expected if an iron is used.” In other words, give very careful consideration before applying HTV to these items!.What do the ironing instruction symbols mean?ĭepending on the composition of your fabric, you may have to set your heat press temperature much lower than normal.Īccording to GINETEX, the International Association for Textile Care Labelling, it is more important to pay attention to the dots on the label than to the fiber composition. modal (not synthetic, made from beech tree fiber, but often blended with synthetics).rayon/viscose (not synthetic, made from plants like bamboo, but often blended with synthetics).There are many different synthetic and blended fabrics beyond polyester that can be heat sensitive, including: It is crucial that you treat these fabrics differently than a regular cotton shirt when pressing your HTV.Įxamples of iron setting recommendations on different laundry tags These labels are probably familiar to most of you (even if you’re like me and mainly ignore them). The instructions might just be a symbol, written text or both. The ironing instructions will be the key to determining how you should apply your HTV. The first thing to do is check the laundry care label on your fabric item. How heat-sensitive is your fabric? Check the laundry care label before you start You may have to use trial and error to determine a middle ground that lets the HTV adhere properly but doesn’t damage the fabric with too much heat. The first big takeaway is that the pressing guidelines for your fabric may be at odds with those of your HTV. the specific brand and type of HTV you are using.There are 2 main things you have to consider when choosing time and temp settings for your project: HTV on polyester temperature and time settings depend on 2 key factors I will cover the basics of how to choose heat press time and temperature, and how to use heat applications on fabrics that can potentially melt, discolor, and scorch. To help you avoid making the same mistakes as I did, I have compiled some tips for heat pressing HTV on polyester and synthetic/blend fabrics. I learned the hard way after scorching a delicate rayon/spandex T-shirt that I was personalizing for my mother in-law! But using heat to apply vinyl to fabric requires care and attention to both the HTV and the textile you are using. Iron-on/heat transfer vinyl (HTV) is wonderfully versatile and can be used to decorate everything from T-shirts to cardstock.
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