PVC industry experts still apparently disagree as to the exact causes of "pinking", or profile discolouration. Some blame uv stabilisers, others point to lead based additives in the profile mix. Recent test results from Benvic, a specialist manufacturer of PVC blends and alloys, and subsidiary of polymer giant Solvay, shed a bit more light on the subject.
Origin
Unknown
Journal Title
Glass Age June 2001 22, 24
Sector
Flat glass
Class
F 1246