A packhouse spokeswoman said they did could not comment on the situation except to say the man was doing "OK" .
A reporter at the scene said the helicopter landed inside the packhouse facility and several fire appliances also attended.
A Fire and Emergency New Zealand spokesman said the Balclutha brigade was called to Storer Rd at 9.15am after someone got one of their arms trapped in the machine.
St John communications adviser Gerard Campbell said one patient was flown by the Otago Regional Rescue Helicopter to Dunedin Hospital.
WorkSafe was investigating.