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Melt filtration: The final step in the purification of PVC bottles for recycling
Author(s) -
Sadowski Gary M.,
Shaw Lane G.
Publication year - 1992
Publication title -
journal of vinyl technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.295
H-Index - 35
eISSN - 1548-0585
pISSN - 0193-7197
DOI - 10.1002/vnl.730140305
Subject(s) - filtration (mathematics) , purge , materials science , waste management , process engineering , polymer , contamination , pulp and paper industry , environmental science , chemical engineering , composite material , engineering , mathematics , ecology , statistics , biology
The final step in the purification of PVC bottles for recycling is melt filtration. However, this common practice increases in complexity when dealing with a clear, thermally sensitive material such as PVC. This paper will explore both conventional and new techniques for melt filtration. This paper also describes various types of contamination found in the form of other polymers and foreign material, as well as experimental data on acceptable levels and processing conditions to purge them from the vinyl melt stream.