This things been bugging me for a long time.
Released: maybe 60's perhaps early 70's
Setting: Bad guy lures women (or maybe people in general) individually into an elevator-looking enclosure and then freezes/encases them in clear glass-like capsules and stores them on a hanging conveyor that emerges from the side of the elevator-looking machine.
Over time, he amasses a large collection IIRC and they are all hanging there in his glass capsules.
The main actress finally finds where her friends had disappeared to (sees them hanging) and tries to escape from the bad guy but he nearly gets her into his elevator thing.
Another man (hero maybe) finds the lab, saves his woman, and defeats the bad guy.
Bad guy end up getting encapsulated himself.
He comes out trapped/frozen in his crystal pounding on the walls trying to escape- a fitting ending!
IIRC, Bad guy's lab might be underground (at least some boulders in his "lab")