Plastic article or earthenware shaping or treating: apparatus – Distinct means to feed – support or manipulate preform stock... – Extrusion shaping means
Patent
1987-05-15
1988-07-12
Chiesa, Richard L.
Plastic article or earthenware shaping or treating: apparatus
Distinct means to feed, support or manipulate preform stock...
Extrusion shaping means
425130, 4251311, 425380, 425462, 425467, B29C 4702
Patent
active
047566825
ABSTRACT:
A machine is especially adapted for coating a profile insert and can be distinguished by the fact that it consists of several extruder screws (1, 2, 3) incorporated into a single block (4), each fed from a hopper opening, through a corresponding orifice (1', 2', 3'), into a union head (5) having a channel (6, 7, 8) for each material being extruded and hollowed out axially for an insert to pass through, this union head (5) feeding, via a distributor ring (9) perforated and grooved concentrically according to the channels in this head, an extrusion chamber (10) with controlled streams, carrying at its exit an extrusion head (11) with a reserved passage for the insert, the head consisting of a frustoconical liner (12) housing, between its entry and its exit, an externally ribbed diffuser (13), in which each groove between two ribs corresponds to an orifice of the extrusion chamber (10), an externally ribbed and grooved frustoconical core (13a) such that its ribs and grooves corresponds to those of the diffuser (13), a die (13b) hollowed out internally with conicity corresponding to the conicity of the radial ribs and grooves of the core (13a), this die comprising a passage cut out to the shape of the desired profile.
REFERENCES:
patent: 2808617 (1957-10-01), Terracini et al.
patent: 3266092 (1966-08-01), Corbett
patent: 3837773 (1974-09-01), Raley
patent: 4087222 (1978-05-01), Noel
patent: 4137027 (1979-01-01), Ruger
patent: 4316710 (1982-02-01), Greenwood
patent: 4347050 (1982-08-01), Figuereo
patent: 4499041 (1985-02-01), Hahn et al.
LandOfFree
Machine for the extrusion of several materials at the same time does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Machine for the extrusion of several materials at the same time, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Machine for the extrusion of several materials at the same time will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-661776