Conical twin-screws have low compression ratio.Two new sizes of conical twin-screw extruders were introduced late last year by Battenfeld Extrusions-technik GmbH in Germany, represented here by American Maplan, McPherson, Kan. Model BEX-2-42-CC is a small coextruder with output of 20 to 150 lb/hr. Model BEX BEx Business Explorer BEX Business Express BEX Backup Express (Syncsort) BEX Backup Exec (Veritas) BEX Broadband Exchange BEX Board of Examiners BEX Budget Execution 2-72-C has output of 110 to 550 lb/hr, suitable for extruding PVC PVC: see polyvinyl chloride. PVC in full polyvinyl chloride Synthetic resin, an organic polymer made by treating vinyl chloride monomers with a peroxide. window profiles at 10 ft/min. These models join the original BEX 2-54-C model with output of 40 to 300 lb/hr. All three were designed in partnership with American Maplan. They use a special water-cooled screw design that is unusual in having a shallower flight in the feed zone, followed by a deeper flight in the metering zone. This reduces the compression ratio compression ratio Degree to which the fuel mixture in an internal-combustion engine is compressed before ignition. It is defined as the volume of the combustion chamber with the piston farthest out divided by the volume with the piston in the full-compression position ( and allows for good degassing degassing (dēgas´ing), adj related to degasification, the process by which dissolved gas is removed from water or other liquid solutions. . Other conical twin-screws have either uniform flight depth or deeper flights at the feed end. Tel: (620) 241-6843, www.sms-k.com [ILLUSTRATION OMITTED] |
|
||||||||||||||
Printer friendly
Cite/link
Email
Feedback
Reader Opinion