I doubt you will ever get garbage bags to hold the seal, but you don't
need to.

Vacuum the air out, then promptly pack them tightly in their storage
area, be it a plastic bin, whatever. If you pack it in densely, they
will let the air back in slowly, and they will expand to fill the area
that they are in, but you will still have the advantage of being able
to store a lot in a small area.

Problem will be when you pull out just one bag, the rest will inflate
to fill that bag's area.