Plastic and nonmetallic article shaping or treating: processes – Forming continuous or indefinite length work – Layered – stratified traversely of length – or multiphase...
Patent
1982-04-19
1983-09-20
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, 4251311, 4251335, 425462, B29D 702, B29F 304
Patent
active
044055471
ABSTRACT:
The coextrusion device (20) of the present invention can be used with conventional extruders (24-26) and extrusion dies (90) for forming layered products (91) from at least two materials. It includes a manifold (21) for receiving a plurality of extruded feed materials (A, B, C) and a feedblock (22) receiving the feed materials from the manifold. The feedblock includes first and second faces (43, 52), entrance ports (40, 41, 42) in the first face corresponding to the number of feed materials, channel means (50, 60, 70) passing through the feedblock between the first and second faces directing each feed material into at least one separate profile, and exit ports (51, 61, 71) in the second face corresponding to the number of channel means, defining a first profile for each feed material. An adaptor (23) is provided for receiving the first profiles from the feedblock and includes first and second faces (82, 85), an entrance port (83) in the first face receiving said first profiles, an exit port (84) in the second face corresponding to the entrance of the extrusion die and, a transition zone (86) between the entrance and exit ports wherein the first profiles become contiguous and the overall configuration of the contiguous first profiles is adapted for receipt by the extrusion die. The device can further include a reverser plate (110) and alternate feedblocks (130 ) having different exit ports (139, 140, 152, 153). Lastly, a method is provided for reducing perturbation while coextruding, utilizing a device of the present invention.
REFERENCES:
patent: 3289249 (1966-12-01), Nakayama et al.
patent: 3295552 (1967-01-01), Powell et al.
patent: 3461197 (1969-08-01), Lemelson
patent: 3464087 (1969-09-01), Koch
patent: 3479425 (1969-11-01), Lefevre et al.
patent: 3557265 (1971-01-01), Chisholm et al.
patent: 3559239 (1971-02-01), Work et al.
patent: 3694292 (1972-09-01), Schippers et al.
patent: 3761211 (1973-09-01), Parkinson
patent: 3833704 (1974-09-01), Nissel
patent: 3849044 (1974-11-01), Ando et al.
patent: 3865665 (1975-02-01), Marion
patent: 3876743 (1975-04-01), Soderlund et al.
patent: 3924990 (1975-12-01), Schrenk
patent: 3959431 (1976-05-01), Nissel
patent: 3959432 (1976-05-01), Wiley
patent: 3985484 (1976-10-01), Takiura
patent: 4052146 (1977-10-01), Sternberg
patent: 4081232 (1978-03-01), Pemberton et al.
patent: 4094947 (1978-06-01), Alfrey et al.
patent: 4144011 (1979-03-01), Sponaugle
patent: 4167383 (1979-09-01), Murakami et al.
Adams Richard C.
Bond Thomas J.
Koch Paul E.
Evans Larry W.
Hoag Willard E.
Knudsen Herbert D.
Plotecher Gary R.
The Standard Oil Company
LandOfFree
Method of coextruding diverse 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 of coextruding diverse materials, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method of coextruding diverse materials will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-587247