Abstract: A multi-manifold extrusion die having a fully independent internal deckle system. The die can selectively produce a composite extrudate having a full-width arrangement, an encapsulation arrangement, or a naked-edge arrangement. Methods are also provided for producing a composite extrudate having a full-width arrangement, an encapsulation arrangement, or a naked-edge arrangement.

Abstract: The invention provides a coextrusion feedblock. The feedblock has a flow adjuster comprising a plurality of independently rotatable adjustment segments. Actuators are coupled with respective adjustment segments of the flow adjuster, such that the segments can be rotated by operating the actuators. The invention also provides a coextrusion profiling insert assembly for mounting removably in a coextrusion feedblock.

Abstract: In extrusion system includes an extrusion die and a deckle system. In one embodiment, the deckle system includes a deckle rod and a cam member operatively coupled to the deckle rod. A cam controller controls the cam member. The cam member cams with the deckle rod in response to actuation of the cam controller. The camming action forces the deckle rod to seal an end region of the extrusion die.

Abstract: The invention provides a deckle system for extrusion dies. In certain embodiments, the invention provides methods of cleaning an extrusion die equipped with a retractable external deckle system. Also provided in some embodiments is a deckle system having a novel deckle adjustment mechanism. In other embodiments, the invention provides an advantageous internal deckle member equipped with a removable, replaceable internally threaded insert.

Abstract: The invention provides a deckle system for extrusion dies. In certain embodiments, the invention provides methods of cleaning an extrusion die equipped with a retractable external deckle system. Also provided in some embodiments is a deckle system having a novel deckle adjustment mechanism. In other embodiments, the invention provides an advantageous internal deckle member equipped with a removable, replaceable internally threaded insert.

Abstract: A layer multiplication device may include a housing and at least one layer multiplication insert positioned inside the housing. The housing may have an inlet configured to receive a flow stream, an outlet configured to discharge the flow stream, and a flow cavity extending between the inlet and the outlet. In operation, the layer multiplication insert may divide an incoming flow stream so as to multiply the flow stream into at least a first flow stream and a second flow stream. In some examples, the inlet provides an inlet flow volume equal to a cross-sectional area of the housing at the inlet multiplied by a length of the flow cavity, the flow cavity defines a cavity flow volume, and the cavity flow volume is equal to or greater than the inlet flow volume.