Do you need to Control an entity before you can Bind it in an item ?

Also, everytime you want to realease the entity from it's prison do you need to pass a Control check or else you can not Control it ?

Thanks in advance!

You do not have to be Controlling a being to Bind them, however if you dont, even if you have bound them, you can not force them to do anything.

If you have a creature Controlled when you Bind them, then you never need to make a Control check on them again, as long as it continues to be bound.

So if I summon a creature,then roll a successiveI control and the Bind it everytime I realease it from the binding and it materialises I don't need to roll for control because I have already done it when I summoned it?

Yes, if you have Contolled a creature before you Bind it, then it stays Controlled as long as it remains Bound. Keep in mind that when you have bound a creature into something, materializing it from the object is not the same thing as releasing the binding.