Modular disk coextrusion die

Details Modular disk coextrusion die Modular disk coextrusion die

B - Operations, Transporting

29

C

B29C 47/06 (2006.01) B29C 47/28 (2006.01)

Patent

CA 2239411

A coextrusion die includes a plurality of annular cells (210) stacked on top of each other. Each annular cell (210) 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 (212, 214, 216, 218) may be joined to form the annular cells (210) through which plastic melt can be axially directed.

L'invention porte sur une matrice de coextrusion comprenant une pluralité de cellules annulaires (210) empilées les unes sur les autres. Chaque cellule annulaire (210) comprend une pluralité d'ouvertures alignées sur les ouvertures de la cellule adjacente, formant ainsi plusieurs courants. Le plastique fondu peut être amené dans la matrice de façon coplanaire. Des piles de disques annulaires (212, 214, 216, 218) peuvent être assemblées de façon à former les cellules annulaires (210) par lesquelles le plastique fondu peut être dirigé axialement.

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