I have a coil of flexible PVC tubing that has sat on a shelf for a few years and I went to cut a piece from it and found that the entire coil seems to be covered in an oily film. Nothing else in the area has this film so it would seems it hasn't been deposited from the environment so I assume the tubing has exuded this oily film itself. Does anyone know if this is a normal occurrence with PVC tubing and is this some sort of plasticiser leaching from the tubing. If so any thoughts on whether this is detrimental for the tubing. I saw some of the tubing earlier today that I had supplied to someone a few years ago and that seemed fine but maybe general handling will have removed anything exuded so as not to be noticed. Any thoughts appreciated.
- posted
11 years ago