Sealing device for packaging machine

Details Sealing device for packaging machine Sealing device for packaging machine

1978-05-02

1979-09-11

McGehee, Travis S.

Package making

Closing packages and filled receptacles

By means adapted to engage outturned seam of package cover

53511, 93DIG1, 156581, B65B 5114

Patent

active

041670922

ABSTRACT:
A sealing device suitable for use in a vacuum packaging machine. The device is provided with a sealing tool and a resilient sealing backing cooperating with said sealing tool to seal two webs of heat-sealable packaging material therebetween when the sealing tool is moved towards the sealing backing. The sealing backing has a milled or knurled contacting surface structure comprising protrusions and/or depressions which may be pyramidal in shape, and the sealing tool has a substantially smooth or planar sealing surface. Adherence of the packaging material to the backing and to the sealing tool is avoided by cooperation of the protrusions and/or depressions with the smooth or planar surface of the sealing tool.

REFERENCES:
patent: 2125758 (1938-08-01), Waters
patent: 3102182 (1963-08-01), Oelze et al.
patent: 3258385 (1966-06-01), Lake
patent: 3659393 (1972-05-01), Richter
patent: 3992850 (1976-11-01), Vetter

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