I think I do not really understand what do you mean. For what cards are you looking to?
You can connect your bankaccount to your PayPal account, which will enable you to withdraw the funds on your PayPal account. (This also works the other way around, and quite well; you can pay with PayPal and if you have insufficient funds on your PayPal account this amount of money will be deducted from your bankaccount later on).
Yeah, A Card isn't exactly a money storing thing. Its just linked to an account and allows you to spend. For withdrawing op you will have to have your bank account linked to withdraw the funds.