Why do some fabrics/textiles shrink from the heat in the dryer, but not the heat of an iron?

Question

Why do some fabrics/textiles shrink from the heat in the dryer, but not the heat of an iron?

In: Physics

Answer 1

Tumbling causes fabric fibres to shrink and curl more than just by exposing them to heat. Also, you don’t iron your clothes for nearly the same amount of time as you would iron them.