Plastic and nonmetallic article shaping or treating: processes – Forming continuous or indefinite length work – Layered – stratified traversely of length – or multiphase...
Patent
1974-12-19
1976-05-25
Hoag, Willard E.
Plastic and nonmetallic article shaping or treating: processes
Forming continuous or indefinite length work
Layered, stratified traversely of length, or multiphase...
264176R, 264177R, 4251335, B29D 704, B29F 300
Patent
active
039594319
ABSTRACT:
A rod of heat-plastified material is extruded and passed through an adaptor section, during delivery to a sheet extruder. In the adaptor section, another material or substance is fed into the interior of the just-extruded rod, such that, upon the rod subsequently being expanded in one direction, and reduced in thickness in another direction, in a sheet-extruder, a multiple-layered laminate may be provided, in that the substance introduced into the rod may differ from the material of the rod. Variations may be made in the manner of introduction of other material into the rod, in order to obtain various numbers of layers, and desired distributions of introduced material through the rod.
REFERENCES:
patent: 2900708 (1959-08-01), Pond
patent: 2985556 (1961-05-01), Rowland
patent: 3223761 (1965-12-01), Raley
patent: 3400190 (1968-09-01), Donald
patent: 3415920 (1968-12-01), Lee et al.
patent: 3432588 (1969-03-01), Breidt et al.
patent: 3494993 (1970-02-01), Breidt et al.
Hoag Willard E.
Welex Incorporated
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