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US 10,442,126 B2Granted
Coextrusion feedblock
AssigneeNordson Corporation
InventorsSalvatore G. Iuliano, Dale P. Pitsch, Michael K. Truscott, Brian M. Andrea
Life of this patent
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Abstract
A coextrusion feedblock is disclosed having a housing, a central extrusion channel, a coextrusion channel, a rotatable combining plane, a rotatable profile actuator, and a profiled bar mounted removably on the rotatable profile actuator. The central extrusion channel and the coextrusion channel pass through the housing. The rotatable combining plane and the rotatable profile actuator are positioned on opposite sides of the coextrusion channel so as to confront each other.
Claims20
A coextrusion feedblock, comprising:
- a housing;
- a central extrusion channel;
- a coextrusion channel;
- a rotatable combining plane;
- a rotatable profile actuator;
- and
- a profiled bar mounted removably on said rotatable profile actuator such that the profiled bar and the rotatable profile actuator move together, wherein:
- said profiled bar defines a profiling face,
- said central extrusion channel and said coextrusion channel pass through said housing,
- said rotatable combining plane and said rotatable profile actuator are positioned on opposite sides of said coextrusion channel so as to confront each other, and
- said rotatable profile actuator is configured such that (a) rotation in a first direction increases a profiling impact said profiled bar has on polymer flowing through said coextrusion channel by causing said profiling face to move to one position in said coextrusion channel and (b) rotation of said rotatable profile actuator in a second direction decreases the profiling impact said profiled bar has on polymer flowing through said coextrusion channel by causing said profiling face to move to another position in said coextrusion channel.
8 more elements
A coextrusion feedblock, comprising:
- a housing;
- a central extrusion channel;
- a coextrusion channel;
- a rotatable combining plane;
- a rotatable profile actuator;
- an extrusion profile tuning member positioned to profile polymer flowing through said central extrusion channel, said rotatable combining plane being downstream from said extrusion profile tuning member, and said extrusion profile tuning member comprising a restrictor bar that is bendable to present different contours to polymer flowing through said central extrusion channel;
- a series of adjustment assemblies attached to said restrictor bar at locations spaced apart along said restrictor bar, such that said restrictor bar bends locally in response to actuating one or more of said adjustment assemblies, each of said adjustment assemblies comprising an adjustment shaft anchored at one end to said restrictor bar, such that:
- (i) said restrictor bar bends in a first direction in response to one direction of axial movement of said adjustment shaft, and (ii) said restrictor bar bends in a second direction in response to another direction of axial movement of said adjustment shaft;
- and
- a profiled bar mounted removably on said rotatable profile actuator, wherein:
- said central extrusion channel and said coextrusion channel pass through said housing,
- said rotatable combining plane and said rotatable profile actuator are positioned on opposite sides of said coextrusion channel so as to confront each other, and
- said rotatable profile actuator is configured such that (a) rotation in a first direction increases a profiling impact said rotatable profile actuator has on polymer flowing through said coextrusion channel and (b) rotation of said rotatable profile actuator in a second direction decreases the profiling impact said rotatable profile actuator has on polymer flowing through said coextrusion channel.
10 more elements
Dependencies are inferred from the claim text.