www.pattfiltration.com \nnms_continuous_filtration_systems \nnms_screenchanger \nnms_continuous_filtration \nnms_rotary_backflush \nnms_Patt_filtration \nnms_continuous_rotary \nnms_backflush_and_plastic \nnms_rotary_polymer \nnms_rotary_filtration \nnms_backflush \nweb_index \nweb_index \nwww.patt-filtration.com \ncontinuous_filtration_systems \nscreenchanger \ncontinuous_filtration \nrotary_backflush \nPatt_filtration \ncontinuous_rotary \nbackflush_and_plastic \nrotary_polymer \nrotary_filtration \nbackflush \nscreenchanger \ncontinuous_filtration_systems \ncontinuous_filtration \nbackflush \nrotary_backflush \nrotary_filtration \nPatt_filtration \nrotary_polymer \ncontinuous_rotary \nbackflush_and_plastic \nscreenchanger \ncontinuous_filtration_systems \ncontinuous_filtration \nbackflush \nrotary_backflush \nrotary_filtration \nPatt_filtration \nrotary_polymer \ncontinuous_rotary \nbackflush_and_plastic \nscreenchanger \ncontinuous_filtration_systems \ncontinuous_filtration \nbackflush \nrotary_backflush \nrotary_filtration \nPatt_filtration \nrotary_polymer \ncontinuous_rotary \nbackflush_and_plastic \nscreenchanger \ncontinuous_filtration_systems \ncontinuous_filtration \nrotary_backflush \nrotary_filtration \nPatt_filtration \nrotary_polymer \ncontinuous_rotary \nbackflush_and_plastic \ncontinuous_filtration_systems \nbackflush \nrotary_backflush \nrotary_filtration \nPatt_filtration \nrotary_polymer \ncontinuous_rotary \nbackflush_and_plastic \nscreenchanger \ncontinuous_filtration_systems \ncontinuous_filtration \nbackflush \nrotary_backflush \nrotary_polymer \ncontinuous_rotary \nbackflush_and_plastic SCREENCHANGER While PATT Filtration prides itself on its range of screenchangers handling the broadest range of polymers, filtration problems often demand something more than our standard product line. Our custom engineering services offer far more than the "Off the Shelf" screenchanger. Our flexibility as a small company enables quick response to customer problems and service requirements. Our screenchangers use custom-fit wire mesh screen packs. Made from a variety of square mesh and dutch weaves, they can be customized to fit your needs, whether you run LLDPE, PVC, ABS, HDPE, PP, rubber or a special blend proper to your production. The pack combinations can come in stainless or plain steel and are designed for all of our PATT Filtration screenchanger sizes. Mesh sizes from 20 to 400 guarantee various level of filtration precision. Packs are custom tailored mesh combinations specific to your production needs. Clockwise from the right: E-size, D-size, C-size, B-size and A-size screens, various meshes. PATT Filtration custom tailors continuous screenchanger equipment to filter any engineering polymer with pressures up to 12,000 psi and temperatures up to 650F. Our experts in the fields of backflush and plastic, polymer filtration, metallurgy and engineering have made our ROTARY IIITM Constant Pressure Drop Continuous filtration system the preferred choice among industry leaders and have made PATT Filtration a worldwide leader for customer service and satisfaction. Each of the devices mentioned above are capable of filtering polymers and each performs its job by particulate retention. Because this discussion is limited to only the most practical solutions, only the most popular, the screen filtering technique used in the backflush and plastic industry will be discussed. PATT Filtration is a leader in rotary polymer filtration equipment. As such, we have an excellent knowledge of our clients’ processes. We here at PATT Filtration have made it our goal to deliver a superior quality product to meet all your rotary polymer filtration needs.Through the years, our ongoing efforts toward perfection have brought about many changes, some subtle other still more drastic, to both our product line as well as our corporation. From our proprietary thin film coating to our dedication to achieve ISO 9001 Standards by September 2004 PATT Filtration places emphasis on ensuring customer satisfaction and product quality. Our experts in the fields of plastics, rotary polymer filtration, metallurgy and engineering have made our ROTARY IIITM Constant Pressure Drop Continuous filtration system the preferred choice among industry leaders and have made PATT Filtration a worldwide leader for customer satisfaction. From the outset, the company’s main objective to provide superior quality products has been realized by applying advanced manufacturing technology. A large part of the earnings is reinvested in R&D and latest technology machinery. We pioneered new materials and coating technologies to achieve a rotary filtration system that simply is unmatched. Integrated microprocessor controls provide reliable operation, simplified maintenance, and computer interface. The more thought and technology that goes into the selection, composition and construction of a screen pack, the better and more efficient the rotary filtration process. Regardless of the method chosen to replace or renew the screen pack, it, the screen pack, is the very heart of the polymer rotary filtration process. When the screen pack is properly designed and installed, it will probably do an excellent job of removing particulate. If your process requires the PATT Filtration's ROTARY III disks to come with removable TM breaker plates, a special backflush remover tool is available for a mechanized, safe and effective breaker plate removing from your unit's disk. The optional hydraulic breaker plate backflush remover tool makes the removal of breaker plates easier and safer for the operator and prevents damage to the disk and breaker plates which could occur if tools like steel hammers are used to remove the breaker plates. Whatever you need - continuous filtration systems for fibers, film and sheet, profile and tubing, or systems to withstand the rigors of unknown materials and contamination in recycling - our Application Specialists will work directly with you to devise the best solution. Our engineers will adapt selected continuous filtration systems to the extruder and die in the most suitable way. The capability to manufacture all parts in-house insures quality and on-time delivery. While PATT Filtration prides itself on its range of screenchangers handling the broadest range of polymers, filtration problems often demand something more than our standard product line. Our custom engineering services offer far more than the "Off the Shelf" screenchanger. Our flexibility as a small company enables quick response to customer problems and service requirements. Our screenchangers use custom-fit wire mesh screen packs. Made from a variety of square mesh and dutch weaves, they can be customized to fit your needs, whether you run LLDPE, PVC, ABS, HDPE, PP, rubber or a special blend proper to your production. The pack combinations can come in stainless or plain steel and are designed for all of our PATT Filtration screenchanger sizes. Mesh sizes from 20 to 400 guarantee various level of filtration precision. Packs are custom tailored mesh combinations specific to your production needs. Clockwise from the right: E-size, D-size, C-size, B-size and A-size screens, various meshes. PATT Filtration custom tailors continuous screenchanger equipment to filter any engineering polymer with pressures up to 12,000 psi and temperatures up to 650F. Continuous Filtration is not necessarily constant flow or constant pressure filtration. Of course, if planned shutdowns exist for other reasons such as color changes or housekeeping, and filtration media renewal is done during this time, then the production predictability goal becomes academic. For those processors who need to maintain predictable production, several solutions are offered. Each solution involves the concept of Continuous Filtration. In the industry, Continuous Filtration is achieved by changing screens without slowing or stopping the extrusion line to effect the change. One solution used to provide continuous filtration is a modified slide plate screen changer. The slide plates are hydraulically driven and are set up in a one way track. Three slide plates, or blocks, are in the track as the screen change begins: one active block, one heated standby block and one recently cleaned block. A ribbon type screenchanger also requires a specific screen which costs double or even triple that of the rotary backflush screens. The savings on screen costs with a rotary backflush system are substantial especially when using a high percentage of regrind or recycled material. Leakage is a problem with most screenchangers. In use they are usually torqued up to prevent leaks and then backed off when a screen change is needed. Rotary backflush screenchangers have a huge sealing surface and leakage is not a common problem. The body blocks and the faces of the disc are superbly machined and polished to mirror like finishes. Using very precise torquing techniques, manufacturers squeeze the disc to unbelievable values. PATT Filtration was established in 1986 in St-Eustache, Canada. Since then, we have grown to be a major competitor in the filtration systems industry. PATT Filtration is now a division PATT Technologies. PATT Filtration is one of the industry’s leading suppliers of constant pressure, continuous screenchangers. The company’s Rotary III is the only continuous screenchanger manufactured in North America and backed by a performance guarantee. Patt Filtration guarantees no downtime during screen changes. Its custom tailored solutions enable clients to filter any engineering polymer with pressures up to 12000 psi and temperatures up to 650°F. The vent and vacuum port will automatically purge air from the oncoming screen cavity to avoid air being passed into the melt flow. The pressure relief port will automatically purge material from the exiting screen cavity to ensure operator safety. The filter disc is enclosed between two body blocks and advanced in ultra-fine angular steps by the microprocessor control, allowing continuous rotary even at lowest speed, while maintaining a constant pressure drop.