Mechanism for converting a cross-sectionally substantially u-sha

Details Mechanism for converting a cross-sectionally substantially u-sha Mechanism for converting a cross-sectionally substantially u-sha

1982-03-10

1984-11-13

Coan, James F.

Manufacturing container or tube from paper; or other manufacturi

Tube making

With advancing of tube axially

53550, 226 95, 226162, 493197, B65B 908

Patent

active

044823410

ABSTRACT:
For converting a web of wrapping material from a U-shaped cross section into a tubular shape, an edge guiding mechanism is used having two edge engaging means which may be performed as suction means. Each of the suction means is supported by a pair of guiding rods converging from a forming means and towards a longitudinal welding means. When the suction means are moved along the rods, the suction means are moved towards one another. The suction means provide an engagement with the outer surface of the edges of the web of material and ensure the movement of the edges towards one another and towards the longitudinal welding means so that a web even of a thin and flexible material is securely engaged with the longitudinal welding means.

REFERENCES:
patent: 2285263 (1942-06-01), Fitch
patent: 2555758 (1951-06-01), Noble et al.
patent: 2701989 (1955-02-01), Hayward et al.
patent: 3748822 (1973-07-01), Borgardt
patent: 3963161 (1976-06-01), Jerney et al.
patent: 4299075 (1981-11-01), Gram

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