Guardian: Recycling companies are beginning to stockpile raw materials as local councils struggle to off-load materials amid falling prices. Closed Loop, one of Britain’s biggest plastics recycling firms, is planning to increase its stocks of unwanted bottles by at least 5,000 tonnes and has stepped up its operation to full capacity of 3,000 tonnes a month to prevent a collapse in the relatively new industry. The price of mixed plastics has nearly halved in the past year as some far …