Air Packers
An Air Packer is a bag filler designed to use air as a method of material conveyance as opposed to a mechanical means of moving material. The main functions of an Air Packer are the 
fluidization of material and accurately controlling the flow of material into the bag.
Most granular or powdered materials can be fluidized. Fluidization is achieved when the individual material particles are blended with air introduced through two locations; a porous pad at the bottom of a column of material and a disseminator in the middle of the same column of material. After fluidization is achieved and the material has been packed into the bag, the column of material is recharged forcing the remaining air in the material column out through several outlets, the leading one being the separate exhaust system. Controlling the air pressure in and out of the column of material is the chief principle of the Air Packer operation.
All PSI Air Packers are gross-weigh packers designed to simultaneously fill and weigh dry powders and fine granulated materials into valve bags. The Air Packers incorporate either a mechanical weigh beam or an electronic load cell for accurate weighing. After filling and weighing, a short burst of air from the spout blast clears any remaining product left in the spout.
PSI offers three separate types of Air Packers. Much like the Auger Packer models, the major difference between the three Air Packers is the weighing systems. We offer a mechanical Air Packer that utilizes a magnetic reed switch attached to a balance beam which spurs the cut-off relay when the appropriate weight is reached. We also offer two electronic Air Packers with the same qualities as the two electronic Auger Packers. One of the Air Packers uses a Mettler Toledo control system; the other employs an Allen Bradley system.
