Process for recycling resin scrap and apparatus therefor

Details Process for recycling resin scrap and apparatus therefor Process for recycling resin scrap and apparatus therefor

1994-10-28

1996-07-23

Michl, Paul R.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Process of treating scrap or waste product containing solid...

521 40, 521 405, 521 48, 521 49, 523326, 523328, 4221841, 4289033, 264 37, C08J 1104

Patent

active

055390048

ABSTRACT:
A process and an apparatus for recycling resin scrap including a thermosetting resin paint film and a thermoplastic resin substrate as its major components, wherein the resin scrap is supplied into a passage of a cylinder, melted, and delivered by delivering means from an upstream side to a downstream side of the passage of the cylinder, and hydrolyzed by a hydrolyzing agent while forming a highly packed region with a resistor. The resistor restricts the resin scrap to flow from the upstream side to the downstream side in a short period of time, and forms the highly packed region where a contact efficiency is enhanced between the resin scrap and the hydrolyzing agent.

REFERENCES:
patent: 4051212 (1977-09-01), Grigat et al.
patent: 4324705 (1982-04-01), Seto et al.
patent: 5286424 (1994-02-01), Su et al.
patent: 5414021 (1995-05-01), Eddy
"Twin Screw Extrusion: Technology and Principles", James L. White, Carl Hanser Verlag, 1991, ISBN 4-915666-16-6-C3043, pp. 248-264.
"Verschmutzte Kunststoffabfalle werden zu wachsartigen Substanzen", Prof. Dr. G. Menges and V. Lackner, vol. 82, No. 2, Feb. 1992, pp. 106-109.
European Search Report (3 pages) dated Feb. 3, 1995 Communication (1 page) dated Feb. 10, 1995.
"Aufbereitung von thermoplastischen Abfallen uber die Schmelze", Helmut Tenner, Speyer/Rein, vol. 31, No. 5, May 1980, pp. 252-258.
Abstract --DATABASE WPI, Section Ch, Week 9404, Derwent Publications Ltd., London, GB; Class AC, An 94-031297 CO4!; JP-A-5 337 940 (MITSUBISHI PETROCHEMICAL CO. LTD.) 21 Dec. 1993.
Abstract --DATABASE WPI, Section Ch, Week 9245, Derwent Publications Ltd., London, GB; Class AC, An 92-372218 C45!; SU-A-1 698 074 (KHARK MASHPRIBORPLASTIK DES. BUR.) 15 Dec. 1991.

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