Patent ID: 6889739

Claim:
A forming machine for making fluid filled units comprising: a) a rotatable drum including a spaced pair of cylindrical work piece supporting surfaces; b) coacting belts for pressing work pieces against the surfaces; c) heating and cooling shoes operably connected to the drum at a sealing station and coactable with the belt and surfaces for sealing a plastic web held between the belts and the surfaces as the web is fed under the shoes by the belts and the drum; d) a fluid nozzle positioned upstream from the shoes in a direction opposite drum rotation for fluid filling pouches in such web as such web is fed from a supply to the sealing station; e) the nozzle having fluid exit ports disposed in opposite sides of the nozzle for emitting pouch filling in opposed directions into pouches spaced axially of the drum; and, f) a supply line for gas under pressure connected to the cooling shoe for effecting cooling by allowing expansion of the supplied gas in a chamber in the cooling shoe.