Polymer Filtration Products.
For Continuous Un-Interrupted Filtration.
The Polymer Filtration product line seeks to provide plastic processors with “Continuous, Un-
Interrputed Filtration”….which we define as Never being compelled to having to shutdown or
reduce thruput of the extruder to change screens!
Our PolyFilter screenchangers provide “CONTINUOUS,UN-INTERRUPTED FLOW” which
minimizes pressure variations permitting more consistent and uniform product…sheet, film, tubing,
pipe or profiles. Since resin is a major cost….Continuous, Un-Interrupted screenchanger may also
save on resin usage.
Our CF (Continuous Filtration/Flow) screenchanger product line consists of the PolyFilter CF
Series and PolyFilter CBF Series. Both fulfills the goal of truly “Continuous, Uninterrupted”
filtration. Both products proved effective, economic, leak-proof, and simple filtration solutions.
Simply stated, The PolyFilter CF screenchanger requires the manual change of the duel screen
packs and while the CFB is designed for screen BackFlush of the duel cylindrical screen
assemblies. The PolyFilter CBF can also be configured for automatic back flush. Both designs are
solid one piece, leak-proof construction with the polymer flow divided into two channels, filtered in
two separte assemblies, and the flow combines the separate polymer flown before the melt enters
Products that we develop, manufacture, or import now must be able to provide “Value-Added” in
terms to operational or economic performance.
Our filtration focus is primarily on providing screenchangers that perform “Continuous,
Uninterrupted Polymer Filtration”. We look for economical and un-complicated, low or minimum
maintenance (operate in-dependent) solutions to filter a broad range of polymers. The
screenchanger products that we provide are either made to our requirements, in- whole or in-part ,
are inspected at our Lowell facility, have value –added components or controls added and then
shipped to the customer. The Lowell facility has CNC machine tools to manufacture entire
screenchangers, sub-assemblies, special components and controllers.
In addition to the PolyFilter CF series we provide two excellent, process-proven Rajhan's Duel Bolt
screenchangers. The DPC has filters on each bolt and require manual change of blinded filters,
while the DPC-BF has two filters packs per bolt which permits back flushting to reduce operator
For process lines that can use or need manual or interrupted , either manual or hydraulic
screenchangers, we have the economic and process proven screenchanger solution.
For screenchangers that we import, we will provide either US manufactured heaters and controls or
industry accepted vendors. We recognize the need maintain a wear parts inventory to support our
Filter screens support is also extremely critical. In those instances where our customers have an
established relationship with a vendor, we will provide our input and expertise to optimize the
filtration process. We also recognize that many applications require a special or non-standard
weave for successful filtration and operation, To address those needs we have established a
relationships with selected screen manufactures.
Polymer + Filtration Products LLC was formed initially by Bob Vogel and then joined by an old
friend and business associate, Pramod Kotwal. This combination leverages the filtration and size
reduction application experience of Bob with Pramod's extensive engineering, manufacturing and
metallurgical expertise. This core competency is the basis for “value-added” filtration and process
products and services for the plastics industry, domestically and internationally.