Part of what makes a dryer dry clothes is the air flow that circulates the hot air to the outside of the house, which is channeled through the link screen. This is why it is important to remove the lint from the lint screen before using the dryer each time, because otherwise the circulation isn’t as good and it takes longer to dry – not to mention the potential fire hazard if lint is left in the lint trap through multiple dry cycles.
Now, take out your lint trap and pour water into it… you would expect water would pour through it, but in actuality, chances are it is acting more like a thick cheesecloth and it is slowly dripping through… this is because the coating from fabric softener sheets also coat the lint trap, causing air to not circulate as well.
Using a stiff brush, wash your lint trap with hot, soap water, allow to dry and then insert back into your dryer. You should notice an immediate difference in how quickly your washing machine dries clothes.