After the pre-made bag rotary packing machine is stably operated, the bag is taken continuously for 30 minutes, and the number of empty catches and bags is counted. The bag-taking rate is calculated according to formula (2), which should meet the requirements of 5.6.

C - the number of times the bag is caught and dropped, the unit is the second; d- the total number of times the unit is captured, the unit is the second.