Could you provide more details.
Rubber stick to roll (calendaring roll ?) during processing ?
Concerning dark RSS in photo from SLR, were they from same batch use that caused the roll sticking problem?
During receiving random inspection of sheets by QA/Lab , were there any “weak” or sticky or over smoked sheets observed?
Is this first time they encounter such sheets from SLR?
Please provide the BS contract number for us to check with shipper.
Maybe better if you get technical people to contact us.
We suggest BTMT should first check the Mooney value and Volatile matter of RSS from both SLR (dark sheets) and TTR and inform us the results.
Other test e.g. Mw, Gel content, fatty acid may be necessary which we can support.
Regards