As with any leveraging, it depends on what the interest rate is. If you can get cheap money, you can leverage as much as you like--but no, I've never used a bank loan for any such purpose and I think it's a bad idea to take out a loan in order to speculate on crypto. I think I remember in 2017 that there was someone who posted here that he was using his credit card to basically do the same thing as what you're proposing, OP.
Leverage/margin can get you into trouble very quickly--especially in the bitcoin market. If you're considering doing this, OP just be careful. If your investments tank, you're stuck with a loan that probably has a high interest rate. And given how volatile bitcoin has been, I think it's just a bad idea.
I guess he warner to say that takes bank loans to ensure funds for trading.
Yeah, that's what he's saying. Borrowing money to trade, regardless of who you're borrowing it from, is leveraged trading. I'm sure there have been quite a few people who've borrowed from banks to do this, though I bet they didn't tell the bank what they were really going to use the money for. Banks don't generally lend money out for the purpose of trading.