Extrusion apparatus

Details Extrusion apparatus Extrusion apparatus

1978-05-15

1980-02-05

Thurlow, Jeffery R.

Plastic and nonmetallic article shaping or treating: processes

Forming continuous or indefinite length work

Layered, stratified traversely of length, or multiphase...

264177R, B29F 310

Patent

active

041872703

ABSTRACT:
An extruder method is taught for forming a co-extruded article wherein the die head of a first extruder forms the primary extrudate which is shaped from a cylindrical form into a thin oblong elongated form. A second extruder feeds its plasticated extrudate to the first extruder die head where the second extrudate is shaped into a thin narrow film for merging the two extrudate into a single elongated composite film for extrusion as an integral film from the die head as a shaped article.

REFERENCES:
patent: 3559239 (1971-02-01), Work et al.
patent: 3715420 (1973-02-01), Kiyono et al.
patent: 3743143 (1973-07-01), Barney et al.
patent: 3813199 (1974-05-01), Friesner
patent: 3933964 (1976-01-01), Brooks
patent: 3959432 (1976-05-01), Wiley
patent: 4015925 (1977-04-01), Heilmayr

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