Packaging has pneumatic emptying device for liquid and viscous filler materials whereby compressed air or another gas fed into cavity between double walls of packaging or between walls of packaging and movable piston

摘要

The packaging has a pneumatic emptying device for the liquid or viscous material (5). Compressed air or another gas is fed into the cavity (3) between the double walls (1,4) of the packaging or between the walls of the packaging and a movable piston. An elastic outer wall with a valve (2) is used as a pump for feeding the compressed gas or air.