Method and an arrangement for packing machines

Details Method and an arrangement for packing machines Method and an arrangement for packing machines

B - Operations, Transporting

65

B

156/31, 93/48

B65B 31/00 (2006.01) B65B 9/13 (2006.01)

Patent

CA 1250173

ABSTRACT In the manufacture of packing containers by external process- ing, sealing and cutting of tubular packing material the tube contents are made use of as a hold-on in the shaping work. To present the enclosed quantity of air from being pressed out in this process through the upper open end of the tube a sealing unit present in the tube is used which comprises a movable sealing holder which in accordance with the invention is pressed by means of the pressure of the enclosed quantity of air in a balanced manner so as to form a seal against a sealing surface . On the periphery of the sealing holder a sealing of flexible material is provided which is resting against the inside of the material tube.

487327

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