Apparatus for and method of transverse sealing for a form-fill-s

Details Apparatus for and method of transverse sealing for a form-fill-s Apparatus for and method of transverse sealing for a form-fill-s

1993-03-12

1994-01-18

Culver, Horace M.

Package making

Methods

Enclosing contents within progressively formed web means

53479, 53551, 53552, 533746, B65B 5130, B65B 912, B65B 920

Patent

active

052790983

ABSTRACT:
A horizontal sealer for a vertical pillow type form-fill-seal packaging machine has a pair of horizontally elongated heater assemblies which are supported such that they remain horizontal as they individually rotate around mutually parallel axes. The distance between these axes are varied as the heater assemblies rotate around them such that the heater assemblies have generally D-shaped trajectories as they horizontally seal a tubularly formed thermoplastic flexible film material to make a bag. Mechanisms are provided whereby the heating surfaces of the assemblies remain oriented in the same direction, the pressure applied to the film material can be controlled and the bag can be squeezed before the horizontal sealing such that articles being packaged will settle inside the bag. A similarly structured vertical sealer may be provided to a horizontal pillow type packaging machine.

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