Patent ID: 8807163
Filing Date: 2014-08-19
Classification: B29C,F04F,Y10T

Abstract:
1. A vacuum sizing tank substantially closed to atmosphere comprising: an enclosed trough capable of holding a liquid and a vacuum, the trough having a first opening for an ingress of a plastic extrudate and a second opening for egress of the plastic extrudate; a vacuum system constructed and arranged apply a vacuum to the trough; a pump system comprising a pump, the pump system constructed and arranged to provide a fluid flow within the trough and control fluid flow within the trough, a plurality of fluid inlets connected to the pump and allowing fluid to enter the trough in a plurality of different positions; a plurality of fluid outlets allowing fluid to exit from the trough in a plurality of different positions; and wherein the plurality of fluid inlets and plurality of fluid outlets are constructed and arranged to provide a fluid flow within the trough, and configured to form a flow zone within the trough, the flow zone having a controlled and uniform flow profile.