Plastic and nonmetallic article shaping or treating: processes – Forming continuous or indefinite length work – Shaping by extrusion
Patent
1990-10-30
1994-03-29
Thurlow, Jeffery
Plastic and nonmetallic article shaping or treating: processes
Forming continuous or indefinite length work
Shaping by extrusion
264349, 264DIG69, 26433117, 425DIG46, 525240, B29C 4736
Patent
active
052982149
ABSTRACT:
Polystyrene having a high storage modulus is blended with a polyolefin, and the blend is converted to a mixed melt which is caused to flow and then a cooled and solidified to form a substantially solid two phase composite. The high storage modulus polystyrene provides particularly good results. Especially good properties are achieved at about 35% polystyrene by weight. Either or both components may be recycled materials and may incorporate minor amounts of other plastics as contaminants.
REFERENCES:
patent: 4386188 (1983-05-01), Grancio et al.
Renfree et al., "Physical Characteristics and Properties of Profile Extrusion Produced from Post Consumer Commingled Plastic Wastes," ANTEC, 1989, pp. 1809-1812.
Nosker et al., "Recycle Polystyrene, Add Value to Commingled Products," Plastics Engineering, Feb. 1990.
"Refined Commingled Plastics Family of Materials (RCM)-Formulations/Processing/Properties," presentation at Industry Advisory Council Meeting, Jun. 7 & 8, 1990.
Nosker et al., "Improvements in the Properties of Commingled Plastics by the Selective Mixing of Plastics Waste," RETEC, Oct. 30-31, 1989.
Morrow Darrell R.
Nosker Thomas J.
Renfree Richard W.
VanNess Kenneth E.
Rutgers The State University
Thurlow Jeffery
Vargot Mathieu
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