Brown oil bleed from PVC sheet

[ttpolymer]

Dear All,

I have received a soft PVC sample, which bleeds brown oil after exposure to sunlight for a day to few days. Does Anybody encounter the same problem? Would anyone can tell me why it happens? Is the brown oil the plasticizer like DOP?
Thanks a lot.

Regards,
TTpolymer

 

chances are, it is the plasticizer that has not been homogenized thoroughly enough.