The material that they can inflate are different.
Usually, air cushion machine can inflate the films that with one hole and need to be hot sealed like HDPE/LDPE air cushion films, air bubble wrap rolls and air pillows bags.
Below the films rolls that our air cushion machine S2 can inflate:
While as for air column machine, it can inflate films that with one-way valve and not need to be hot sealed such as PA/PE air column wrap rolls, air column bags in rolls and any other films like that. They can lock air automatically once air in the films.
Below the rolls types that our air column machine S6 can inflate: