초록 ▼

Valving employed to control side closing elements of bag clamping apparatus of a bag filling machine is altered to cause the elements to move slowly to close the sides of a bag being filled whereby air is permitted to escape externally through slowly closing openings at the sides of the bag. At a pr

Valving employed to control side closing elements of bag clamping apparatus of a bag filling machine is altered to cause the elements to move slowly to close the sides of a bag being filled whereby air is permitted to escape externally through slowly closing openings at the sides of the bag. At a predetermined time determined by the size and contents of the bag the openings are closed rapidly thereby sealing the bag once fitted.

대표청구항 ▼

[ We claim:] [6.]6. The method of externally exhausting air from a bag clamped on a filling spout comprising the steps ofclamping front and back surfaces of a bag disposed about an expandable filling spout,slowly moving the side surfaces of the bag towards edges of the filling spout to permit during

[ We claim:] [6.]6. The method of externally exhausting air from a bag clamped on a filling spout comprising the steps ofclamping front and back surfaces of a bag disposed about an expandable filling spout,slowly moving the side surfaces of the bag towards edges of the filling spout to permit during a bag filling operation escape of fluid from openings between the sides of the bag and the filling spout, and rapidly moving the side surfaces of said bag toward edges of said filling spout commencing on predetermined time after initiation of the slow movement of the side surfaces of the bag.