Apparatus and method for mixing recycling material into a polyester melt

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United States of America Patent

PATENT NO 11814486
APP PUB NO 20200399437A1
SERIAL NO

16969813

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Abstract

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Apparatuses and processes may be utilized for mixing used polyester into a polyester melt. In some processes an intermediate product stream is branched off from an intermediate stage in a virgin polyester production process. The intermediate product stream is then mixed with recycled polyester flakes in a dynamic mixer, where not more than 60% of a melting energy required to melt all the recycled polyester flakes is generated and/or supplied in the dynamic mixer. The mixture produced in this way is fed into a subsequent stage downstream of the intermediate stage and converted up to the desired degree of polycondensation. In this way, it is possible to physically reutilize used polyester or polyester waste.

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Patent Owner(s)

  • UHDE INVENTA-FISCHER GMBH; THYSSENKRUPP AG

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Hess, Christopher Schönfließ, DE 125 1363
Hittorff, Martin Bonaduz, CH 3 4
Koch, Heinrich Kleinmachnow, DE 13 203
Pawelski, Alexander Felsberg, CH 2 3

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