Patent ID: 9216534
Filing Date: 2015-12-22
Classification: B29C,B29L

Abstract:
1. A coextrusion feedblock having a housing, a central conduit, a coextrusion conduit, a wedge-shaped flow adjuster, and a plurality of actuators, said coextrusion conduit having a gap height, a width, and a length, said wedge-shaped flow adjuster comprising a plurality of adjustment segments positioned side-by-side along said width of said coextrusion conduit, each of said adjustment segments being independently rotatable, said actuators being operably coupled with respective adjustment segments of said wedge-shaped flow adjuster, each actuator being moveable between first and second configurations, the first configuration involving said actuator engaging the respective adjustment segment of said wedge-shaped flow adjuster to limit rotation of said adjustment segment, the second configuration involving said actuator being disengaged such that the respective adjustment segment of said wedge-shaped flow adjuster is allowed to rotate in response to mass flow variations of extrudates flowing through said central conduit and said coextrusion conduit.