Tube emptying device consists of two rollers with roughened outer surface which fit on either side of tube end and are enclosed at each end in rubber band or a springy strip of stainless steel which biases them towards each other

摘要

The tube emptying device consists of two rollers (1) with a roughened outer surface which fit on either side of the tube end. These are enclosed at each end in a rubber band (2) or a springy strip of stainless steel which biases them towards each other.