(Decanter) - Nomacorc is on the brink of launching new wine closures that are partially made from plant-based polymers. The synthetic cork giant has spent the past two years honing the closure. It will be officially unveiled at the Intervitis expo in April and is currently pegged for a full commercial launch towards the end of 2013. It will be a hybrid of plant-based polymers and oil-based plastic, tapping into a concept already being explored by several food and drink manufacturers, such as Coca-Cola Co and its Plantbottle.