It would depend on the quality of transfer paper the iron-on had been produced on. Like everything, the paper is subject to corruption and age and the iron-on may have cracked with age. This will become apparent when you try to apply it as it will either fragment or go on "crumbly" or look a bit blurred. We're talking a very long time here. Most iron-ons, if they have been stored well, not exposed to excess light or moisture should apply fine with the application of heat. If worse comes to worse and you are unsure you can always sacrifice one and test it on a rag, turn the rag inside out once the image has set, wash it, and see how it comes out.
yes they do expire.
No they do not expire!
does ajinomoto expire
This milk will expire tomorrow.You coupon will expire next week.
No, they do not expire.
Expire is a verb.
No, it doesn't expire.
No, after you purchase your account, it will not expire.
No but the credit can expire.
120 months they expire
Turkey's can expire if they are not stored properly.
no they do not expire they are not food lol