We want items labeled with a 2 inside the recycle triangle. Skip the plastic bags. Go for bottles and bottle caps.
With metal recycling, food and label remnants don't matter because they burn off when melted. But if there are food or labels on the plastic we recycle, we will end up with filament that contains food particles and label bits.
Sort by color, then remove labels as best we can and wash. Maybe try a heavy duty paper shredder to cut up into consistent bits we can deal with? We will have to see what works for washing. I'm thinking a heated bath with a pressure washer to agitate the bits will break things loose. We can filter the water to sub-micron with diatomaceous earth to remove fibers and recirculate it until it runs clear.
We would need a paper shredder and a pressure washer to test with. I have pumps and filters. One of the steam kettles will do for a wash tank.