Plastic and nonmetallic article shaping or treating: processes – Forming continuous or indefinite length work – Layered – stratified traversely of length – or multiphase...
Patent
1971-04-26
1976-01-20
Thurlow, Jeffery R.
Plastic and nonmetallic article shaping or treating: processes
Forming continuous or indefinite length work
Layered, stratified traversely of length, or multiphase...
156244, 264175, 264237, B32B 2730, B32B 2708
Patent
active
039339645
ABSTRACT:
A resin product is produced as an extrudate made up of two or more layers of different resin materials that retain desirable characteristics of each type of material. The layers are molecularly bonded or fully adhered in a face-to-face relation without an adverse modification of the characteristics of the individual materials. The extrudate is produced in the form of a longitudinal strip or sheet by simultaneously separately forcing or co-extending two or more different resin materials in a liquid or molten condition through separate die passageways while forming or shaping each material into a desired shape and applying the shaped materials as laminates in a face-to-face relation upon each other, while advancing them and thereafter solidifying them as adhering layers or plys of a unitized strip or sheet length.
REFERENCES:
patent: 3170013 (1965-02-01), Ploetz
patent: 3276943 (1966-10-01), Kawamura
patent: 3420679 (1969-01-01), Gifford et al.
patent: 3443277 (1969-05-01), Frielingsdorf
patent: 3476627 (1969-11-01), Squires
patent: 3556635 (1971-01-01), Schrenk et al.
patent: 3565985 (1971-02-01), Schrenk et al.
patent: 3639573 (1972-02-01), Port
patent: 3668288 (1972-06-01), Takahashi
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