POLYPOR^TM Porous Products Group offers a line of standard products in a variety of materials, thickness and grades suitable for a wide range of applications.·

The sheet grades in this product line have an average mean pore size in the 7-150 micron range with void volumes of 35-50%.

POLYPOR^TM Porous Plastics are naturally hydrophobic, but aqueous solutions which can be forced through under pressure. If a gravity flow of aqueous solutions is desired, POLYPOR ^TM can make the sheet hydrophilic with a special treatment procedure.

POLYPOR^TM Sheet materials are widely used for filtering, diffusing, venting, wicking, fluidizing, air conveying and as membrane supports.

Specific applications include column chromatography supports, ion exchange resin support, battery flame arrestors, fluidized bed air pads and reservoirs for liquids.

Materials Handling Sheet

POLYPOR^TM Material Handling Sheet is a special high density polyethylene porous plastic that has specific usage in fluidizing/powder coating and material handling/conveying applications including:·

• Fluidizing Board – for powder coating, bulk pharmaceutical processing and food processing·


• Fluidizing Air Pads – assisting in the unloading of conical storage silos/bins and railroad or truck hopper cars·


• Air Conveyors – levitating and conveying of powders such as coatings, flour and grains, pigments, cement, fertilizers and lightweight objects, such as stampings, films, electrical components and semi-conductor chips