Heat transfer material adhering issues
Heat transfer materials are experiencing issues with staying in place on the fabric surface. The material is either not sticking well on initially or coming off with limited wear and tear.
The following can cause concerns with heat transfer material not adhering properly onto a fabric surface:
Fabric type in question is not conducive to adhesive - The heat transfer material is intended for cotton fabric surfaces. It will not work with Nylon fabrics or plastics (vinyl/PVC, ABS, etc.). Similarly, polyester will not work well with heat transfer materials since the adhesive type cannot bond properly to a plastic-based surface. Also, textured fabrics or loosely knit fabrics are not ideal for use with the heat transfer product.
Wrong iron settings used - Too little or too much heat as well as too little or too much time can affect the adhesive quality and how it is bonded onto the fabric surface. Over or under ironing can cause issues.
Washing or drying conditions too harsh - Garments should be turned inside-out prior to washing and fabrics with the heat transfer material applied should not be placed in a dryer with a high heat setting.
Some of the suggestions and tips for proper use of heat transfer material are as follows:
Do not apply heat transfer material to Nylon fabrics or plastics (vinyl/PVC, ABS, etc.).
Heat transfer material should never be layered.
For best results, apply ample pressure while using your iron's cotton setting.
Keep things as flat as possible when ironing on initially
Use a thin pressing cloth (or the Teflon sheet included in the box) rather than a thick cloth.
Heat transfer material should never be dried on high heat in a dryer-only medium or low.
Highly textured fabrics or loosely knit fabrics are not ideal for use with heat transfer material.
Once your project is finished and the transfer surface has been removed leaving your project, you may wish to again iron (directly for flocked and with a thin pressing cloth for smooth) without the additional plastic surface in order to provide additional heated pressure.
After wearing (if a garment of any sort), you will want to wash the garment inside-out.