Anyway...this year my kindergartner really took the whole "vinyl all the things" to the extreme. He wanted to label everything with vinyl from his crayon box to this lunch box. I had to draw the line but I did agree to putting some HTV on his lunch box and book bag, along with vinyl on his pencil box and water bottle.
Lunch boxes and soft coolers present a challenge because of the thermal material on the inside. It's easy to melt them with heat, but since we need heat to apply HTV it can be tricky. So what's the trick?!
The key is lower than normal time, temperature and pressure. Start by cutting the heat transfer vinyl like you normally would in reverse.
I let Blake pick out the exact colors and fonts he wanted. He also likes to help me load the cutting mat and weed the HTV. He's a pretty good helper for five, don't you think?!
When it comes time to apply the HTV to the lunch box you want to warm up your heat press or iron to about 270 degrees.
Place the HTV onto the lunch box and unzip it so you have a pretty flat surface.
Place a pressing pillow on the bottom plate of the heat press first or on the surface where you'll be pressing with an iron. This will help absorb some of the heat.
Finally, place a teflon sheet - folded over double - on top of the lunch box.
Then apply heat for 10 seconds at medium pressure. After 10 seconds check to see if the carrier sheet can be removed without pulling up the HTV. If so, pull the entire carrier sheet off and you should be good to go.
If you need to apply more heat do so in 5-7 second rounds checking if you can cleanly remove the carrier sheet in between each.
Applying heat transfer vinyl to backpacks works the same way - you want about 10 seconds of low heat and medium pressure. The least amount of heat, pressure and time is what you're going for when it comes to putting HTV on thermal lunch boxes and backpacks.
By the way, if you want to get really fancy you can even use you child's own handwriting to label their items! You can check out that Silhouette CAMEO tutorial on cutting handwriting here.
Note: This post may contain affiliate links. By clicking on them and purchasing products through my links, I receive a small commission. That's what helps fund Silhouette School so I can keep buying new Silhouette-related products to show you how to get the most out of your machine!
Get Silhouette School lessons delivered to your email inbox! Select Once Daily or Weekly.