Edge-laminating apparatus and process
AssigneeP.C.E. Corp.
InventorsPeter F. Cloeren, Charles H. Wernery, Jr.
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Abstract
The present invention provides a novel edge-laminating apparatus, in which an edge-laminating stream exiting from an edge-laminating flow channel, is driven by flow pressure into an edge of another stream. Also provided is a novel process for forming an edge-laminated stream, and for forming an extruded product.
Claims29
An edge-laminating apparatus comprising a first flow passage and an edge-laminating flow channel that converge;
- wherein said first flow passage comprises means disposed upstream of the convergence, for increasingly laterally displacing an edge of a stream flowing through said first flow passage, and for establishing laminar flow of the width-reduced stream prior to said convergence;
- wherein said edge-laminating flow channel is defined in part by an edge-lamination assembly, said means disposed upstream being a wall provided by said edge-lamination assembly;
- and wherein said edge-laminating flow channel is disposed at said convergence, relative to said first flow passage, such that an edge-laminating stream is driven by flow pressure into said edge of said width-reduced stream.
An edge-laminating apparatus comprising a first flow passage and an edge-laminating flow channel that converge, wherein said edge-laminating flow channel is disposed at the convergence, relative to said first flow passage, such that an edge-laminating stream laterally displaces by flow pressure an edge of a stream flowing through said first flow passage;
- wherein said edge-laminating flow channel comprises a transition channel for increasing lateral displacement of said stream edge;
- and wherein a wall of said transition channel for effecting the increasing lateral displacement, is locating downstream from said convergence, said wall being provided by an edge-lamination assembly.
The apparatus of clim 7, wherein the displacement-effecting wall is provided by a removably mounted, endpiece element of said edge-lamination assembly.
A process for forming an edge-laminated stream, said process comprising transversely spreading an edge-laminating stream to a width equal to a thickness of a second stream;
- and driving by flow pressure, the transversely-spread stream into a second stream edge of said thickness, thereby laterally displacing the entire second stream edge and reducing the second stream width.
A process for forming an edge-laminated stream, said process comprising transversely spreading an edge-laminating stream to a width equal to a thickness of a second stream;
- and after a second stream edge of said thickness has been mechanically displaced and said second stream width has been thereby reduced, driving by flow pressure the transversely-spread stream into said second stream edge.
A process for forming an edge-laminated stream, said process comprising the following step sequence:
- dividing a flow stream into a first edge-laminating stream and a second edge-laminating stream;
- providing a selected flow volume for said first edge-laminating stream and said second edge-laminating stream;
- transversely spreading each edge-laminating stream;
- matching the flow velocity of each transversely-spread stream to that of a core stream, without changing the flow volume of either transversely-spread stream;
- and driving by flow pressure, each transversely-spread stream into an edge of said core stream, thereby laterally displacing edges of said core stream and reducing the core stream width.
A process for forming an edge-laminated stream, said process comprising the following step sequence:
- dividing a flow stream into a first edge-laminating stream and a second edge-laminating stream;
- providing a selected flow volume for said first edge-laminating stream and said second edge-laminating stream;
- transversely spreading each edge-laminating stream;
- matching the flow velocity of each transversely-spread stream to that of a core stream, without changing the flow volume of either transversely-spread stream;
- and driving by flow pressure, each transversely-spread stream into an edge of said core stream after the core stream edges have been mechanically displaced and the core stream width has been thereby reduced.
A process for removing an edge of an extruded product, said process comprising (a) transversely spreading an edge-laminating stream to a width equal to a thickness of a second stream, and driving by flow pressure, the transversely-spread stream into a second stream edge of said thickness, thereby laterally displacing the entire second stream edge and reducing the second stream width;
- wherein said edge-laminating stream is sufficiently incompatible with said second stream that said edge-laminating stream may be peeled away from said second stream;
- (b) extruding a composite stream comprising said second stream and an edge formed by said edge-laminating stream;
- and (c) peeling said edge formed by said edge-laminating stream, away from said second stream.
A process for removing an edge of an extruded product, said process comprising (a) transversely spreading an edge-laminating stream to a width equal to a thickness of a second stream;
- and after a second stream edge of said thickness has been mechanically displaced and said second stream width has been thereby reduced, driving by flow pressure the transversely-spread stream into said second stream edge;
- wherein said edge-laminating stream is sufficiently incompatible with said second stream that said edge-laminating stream may be peeled away from said second stream;
- (b) extruding a composite stream comprising said second stream and an edge formed by said edge-laminating stream;
- and (c) peeling said edge formed by said edge-laminating stream, away from said second stream.
Dependencies are inferred from the claim text.