It is generally possible to sew them on (unless the patch fabric is too heavy to stitch) but the whole point of a patch being a labour-saving "iron on" is that this is the way it is intended to be fixed to the garment.
NO, you cannot iron a patch onto nylon, the nylon will melt. You will have to sew it on.
no itll mess up the leather
It is not recommended to iron a patch onto suede as the heat can damage the fabric. Instead, you can hand-sew the patch onto the suede for a more secure and safe attachment.
£2.50 per patch
If it's iron on it will have a sort of thin, shiny, clear plastic- looking stuff on the back of it, whereas if it's sewn on it wont have that :)
First, take your patch. then grab your sewing kit and start to sew your patch to your other patch, you are done.
Sew a patch onto them
To learn how to sew a patch onto fabric, you can follow these steps: Choose a patch and fabric that you want to sew together. Thread a needle with a color that matches the patch. Position the patch on the fabric where you want it to be. Use a basic stitch like a running stitch or a whip stitch to attach the patch to the fabric. Secure the thread with a knot when you finish sewing. Practice and patience will help you improve your sewing skills.
Bigger patch.
It really depends on the size of the tear. There are patches made out of denim which may be ironed on that are easily found. You could also make your own cute patch out of a favorite fabric, back it with heat and bond "light", iron it on the outside of the jeans then sew around the edges with regular thread or a decrative thread. If you use the regular heat and bond or extra hold, you will not need to sew the edges as it is strong enough to stay in place without stitching, plus the needle will gum up if you try to sew through it. Use your imagination and have fun.
you can iron over the badge on the blazer the it should stick on it if it dont then you have to sew it on your blazer
Iron-on name tags are much quicker to use, you just iron them on for about 8 seconds. If you choose a quality product, iron-on name tags will not fall off in the wash. Now you can even get color iron on name tags. Sew on name tags are fine, Cash's is the traditional provider of sew on name tags, as long as you are happy to sew on everything.