초록 ▼

In a machine for manufacturing packing containers by sealing and cutting a tubular packing material, a sealing unit positioned in the tube comprising a sealing guide, a sealing holder movably supported by the sealing guide, a sealing member of flexible material on the periphery of the sealing holder

In a machine for manufacturing packing containers by sealing and cutting a tubular packing material, a sealing unit positioned in the tube comprising a sealing guide, a sealing holder movably supported by the sealing guide, a sealing member of flexible material on the periphery of the sealing holder which contacts the inside of the material tube and passages in the sealing guide and sealing holder for conveying pressurized air therethrough.

대표청구항 ▼

In a packing machine of the type in which a tube of packing advances continuously downward while liquid contents are supplied to the interior of the tube to a lower zone in said tube through a fixed filling pipe and gas is supplied to said lower zone through a seal between said filling pipe and said

In a packing machine of the type in which a tube of packing advances continuously downward while liquid contents are supplied to the interior of the tube to a lower zone in said tube through a fixed filling pipe and gas is supplied to said lower zone through a seal between said filling pipe and said tube, the improvement comprising a seal ring, collar means on said filling pipe, said seal ring being mounted in said collar means, said collar means and said seal ring including means for allowing radial movement of said seal ring relative to said filling pipe, and a flexible sealing element on said seal ring for engaging the interior of said tube and maintaining a seal between said tube and said filling pipe.