Heavy fleece material like hooded sweatshirts take longer to cure than light weight apparel like t-shirts. It's a good idea to slow down the belt speed on your dryer so the hoodies stay in the dryer chamber longer.
It's also a good idea to send sweatshirts through the dryer twice to ensure a fully cured print.
Consider buying a heat gun to measure the temperature of the screen printed area of the garment as it is coming off of the dryer belt. Plastisol ink achieves full cure at 320 degrees.
Have a question about screen printing or t-shirt printing?
Ask ASPA! -- Get Answers.