I appear from the aether to ask another silly question.
There are several conveyors that lead to a hopper. The product is scraped off the conveyor with a scraper. On the sides of the scrapers are two plastic blocks that are angled to knock the edge product further into the hopper and away from the edge. What would an officially sounding name be for these plastic chunks? They're not scrapers, they don't touch the belt directly. They're not guards. Chute Scraper Edge Redirectors (2) might be my best guess.
If anyone out these has knowledge in the official part names for conveyor/chute cleaning systems that has a better name for these plastic paperweights, I'm all ears. I've already spent too much time trying to find their official names online.