초록 ▼

A coextrusion die includes a plurality of annular cells stacked on top of each other. Each annular cell includes a plurality of openings aligned with openings in the adjacent cell, thus forming multiple streams. Plastic melt may be supplied to the die coplanarly. Stacks of annular disks may be joine

A coextrusion die includes a plurality of annular cells stacked on top of each other. Each annular cell includes a plurality of openings aligned with openings in the adjacent cell, thus forming multiple streams. Plastic melt may be supplied to the die coplanarly. Stacks of annular disks may be joined to form the annular cells through which plastic melt can be axially directed.

대표청구항 ▼

[ What is claimed is:] [1.] A die for coextruding one or more resin materials to produce a plurality of laminate layers said die comprising:a) a modular disk assembly including at least one cell, said modular disk assembly having a first end and an opposite second end;b) said at least one cell compr

[ What is claimed is:] [1.] A die for coextruding one or more resin materials to produce a plurality of laminate layers said die comprising:a) a modular disk assembly including at least one cell, said modular disk assembly having a first end and an opposite second end;b) said at least one cell comprising:i) a plurality of thin annular disks axially adjacent to each other, at least two of said annular disks permanently joined with respect to each other, each of said annular disks having an inner radius and an outer radius;ii) a plurality of openings on each of said annular disks, each of said openings being radially disposed between said inner and outer radius, wherein at least one thin annular disk of the plurality of thin annular disks has a spiral overflow de med through a thickness of the at least one thin annular disk;c) wherein said openings form resin passages through said modular disk assembly.