Plastic and nonmetallic article shaping or treating: processes – Forming continuous or indefinite length work – Layered – stratified traversely of length – or multiphase...
Patent
1987-12-01
1989-05-09
Thurlow, Jeffery
Plastic and nonmetallic article shaping or treating: processes
Forming continuous or indefinite length work
Layered, stratified traversely of length, or multiphase...
264173, 425132, B29C 4704
Patent
active
048287806
ABSTRACT:
The invention provides a method for encapsulating extrudable materials within an extruded stream of another extrudable material. The produced product is an extruded material that contains one or more different materials embedded within the first material. The boundaries between this first encapsulating material and the material or materials thus encapsulated are well-defined and distinct. In the preferred embodiment, the encapsulated and encapsulating materials are plasticized thermoplastic resins. A stream of the encapsulating material is formed in a first extrusion channel. A plasticized stream of the material to be encapsulated, coated by a coextruded layer of the encapsulating material, is simultaneously formed and travels through a second extrusion channel. At any selected time, a cross-sectional segment of the second stream may be removed from its stream and replaces a similar cross-sectional portion of the stream removed from the first channel. The resulting stream of material extruded from the first channel contains discrete and uniformly shaped units of the second material encapsulated within a continuous stream of the first material.
REFERENCES:
patent: 2815033 (1957-12-01), Braunlich
patent: 2822574 (1958-02-01), Lavash
patent: 3180912 (1965-04-01), Rowe, Jr.
patent: 3223761 (1965-12-01), Raley
patent: 3299192 (1967-01-01), Lux
patent: 3427999 (1969-02-01), Schultz
patent: 3453688 (1969-07-01), Otstot et al.
patent: 3461197 (1969-08-01), Lemelson
patent: 3479425 (1969-11-01), Lefeure et al.
patent: 3557265 (1971-01-01), Chisholm et al.
patent: 3724985 (1973-04-01), Burlis et al.
patent: 3792945 (1974-02-01), Randall
patent: 4056344 (1977-11-01), Lemelson
patent: 4128386 (1978-12-01), Wissinger et al.
patent: 4376625 (1983-03-01), Eckardt
patent: 4469475 (1984-09-01), Krysiak
Heitbrink Jill L.
Killon Extruders, Inc.
Thurlow Jeffery
LandOfFree
Method for encapsulating extruding materials does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method for encapsulating extruding materials, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method for encapsulating extruding materials will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-88572