Many years ago I made PVC dungarees for my small son so that he could be "hosed down" after playing outside. The fabric was a PVC coating on a woven cotton backing. I used an ordinary machine needle and probably cotton thread. They were very easy to sew and he grew out of them before they wore out.
I would think that if the fabric was PVC only without the cotton backing you would need a ball point needle. Hope this helps.