US 11,511,474 B1 · Modular disk coextrusion die with melt channeling disk

Abstract

A modular disk coextrusion die is formed of a plurality of cells stacked together. Each cell includes an arrangement of thin annular disks, including at least a first cap disk, a first distribution disk, a first transition disk and a first spreader disk. The modular disk coextrusion die includes at least one channel disk having at least one inlet opening and at least two outlet openings per inlet opening. The thin annular disks are configured so that a first of the outlet openings of the channel disk is in fluid communication with the first distribution disk in the first cell and a second of the outlet openings in the channel disk is in fluid communication with the first distribution disk in the second cell. The channel disk provides for a more efficient utilization of space at the inlet of the modular disk coextrusion die and enables the feeding of up to twenty melt streams.

Claims22

Dependent claims

A modular disk coextrusion die, comprising at least first and second cells, each cell including a plurality of thin annular disks arranged in a stacked configuration;

each of the first and second cells including a first cap disk having a plurality of openings disposed around a perimeter thereof, a first distribution disk, a first transition disk and a first spreader disk;
the modular disk coextrusion die further including a channel disk having at least one inlet opening, at least two outlet openings per inlet opening, and one or more channels connecting the at least one inlet opening with the at least two outlet openings;
wherein the thin annular disks are configured so that a first of the outlet openings of the channel disk is in fluid communication with the first distribution disk in the first cell and a second of the outlet openings of the channel disk is in fluid communication with the first distribution disk in the second cell.

A modular disk coextrusion die comprising at least first and second cells, each of the first and second cells including a plurality of thin annular disks arranged in a stacked configuration;

each of the first and second cells including a central routing disk having at least one flow opening, a first sub-cell on a first side of the central routing disk, and a second sub-cell on a second side of the central routing disk;
each first sub-cell including a first distribution disk, a first transition disk and a first spreader disk;
each second sub-cell including a second distribution disk, a second transition disk and a second spreader disk;
each of the first and second distribution disks including a distribution inlet opening, a plurality of outlet openings, and a plurality of channels connecting the distribution inlet opening with the plurality of outlet openings, wherein the distribution inlet opening in the first distribution disk is about 180 degrees opposed to the distribution inlet opening in the second distribution disk;
the modular disk coextrusion die further including a channel disk having at least one inlet opening, at least two outlet openings per inlet opening, and one or more channels connecting the at least one inlet opening with the at least two outlet openings;
wherein the thin annular disks are configured so that the two outlet openings of the channel disk are in fluid communication with at least two of the distribution disks in the first and/or second cells.

3 more elements

Dependencies are inferred from the claim text.

Modular disk coextrusion die with melt channeling disk

Life of this patent

Modular disk coextrusion die with melt channeling disk

Life of this patent

Abstract

Claims22