Using a Plate for Meat and Dairy

Is it permissible to use a disposable plate for cold dairy and, after a thorough washing, for cold/hot meat?

Hello,

Ideally, one should use a utensil for only one type to avoid mixing flavors.

However, in a case of necessity, it is permissible to use a utensil for cold dairy and, after a thorough washing, to use it for meat, even hot.

But one should pay attention to whether the plate is indeed cleaned well, as there are utensils that, due to their thinness, cannot be washed thoroughly because they may break and be ruined.