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US 2011/0214392 A1Published application
Heat sealing machine for a packaging system
AssigneeProtomed
InventorNorman Niven
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AssigneeProtomed
InventorNorman Niven
Estimating the term…
In a system for discretely packaging liquid or solid medication or other substances comprising a compartmented tray (10) with a perforated sealed sheet (21) attached thereto and individual removable pots (17) to which the sealed sheet is also sealed, a heat sealing machine to cause the sheet (21) to be sealed to the individual pots (17) and to the tray (10) whist simultaneously folding and sealing a front flap (29) of the film (21) to an end face (15) of the tray, comprising a heated plate (30) and a spring loaded pressure plate (32) with a supplementary heated member (36) and adjustable spot- sealing pins (37) pivotally mounted on the machine such that as the heated plate (30) seals the top of the film (21) so the pins (37) fold the front flap (29) of the film (21) down over the end of the tray and seal it thereto. Thus, the film (21) is sealed to the tray on two planes substantially simultaneously.
A heat sealing machine for applying heat at predetermined positions on a heat sealable film placed over a compartmented tray to seal the film to the tray on two planes, one substantially normal to the other, the machine comprising a heated plate adapted to bear upon a heat sealable film superimposed on a first plane over a compartmented tray, a spring loaded pressure plate adapted to bear upon the heated plate, a supplementary heated member movable with respect to the heated plate and having a pressure member adapted to bear against the heat sealable film to become superimposed over the surface of the compartmented tray on a second plane.
Dependencies are inferred from the claim text.