British Polythene Industries (BPI) expects full-year results to be within the range of current market expectations, but rising costs remain a problem."Raw material costs and availability continue to be an issue and our suppliers are seeking further increases for January," the company said Wednesday.It warned last month it was uncertain about input costs for November and December. Then, it said pension financing and restructuring costs are likely to result in full year profits being towards the lower end of current market forecasts. The company "continues to be buffeted" by polymer price increases as many of its suppliers have "scaled back production" and are "running on tighter inventories", it said on 15 November.Today's statement confirmed new banking facilities of £70m have been agreed to the £57.5m revolving credit facilities which expire in November next year.Results for the year ended 31 December 2010 will be announced on 7 March.