(Telegraph) - Glass wine bottles are under threat from Tetra-Pak cartons, foil pouches and tins cans, new research claims. The alternative packaging, long dismissed as downmarket, is set to grow by up to 15 per cent next year. Paper, carton and foil can be cheaper to manufacture in bulk, more convenient for the consumer and more environmentally friendly, according to a study by The Grocer. It found that ranges of boxed wine, previously associated with cheaper grape varieties, are increasingly being introduced into mainstream supermarket shopping.