A multilayer barrier composite high strength polylactic acid film

The present invention relates to a polylactic acid multilayer barrier composite film of high strength, is obtained by a multilayer composite comprising an outer layer of polylactic acid hydrophobic membrane, the intermediate layer is a barrier layer of polylactic acid, polylactic acid reinforced underlayer film. Characterized in further comprising: a hydrophobic polylactic acid strength of the film and the intermediate layer an outer layer of a barrier film of polylactic acid, a polylactic acid intermediate layer between the barrier layer and the bottom layer of the polylactic acid film has an elastic hot melt adhesive layer. The composite film having excellent strength, gas barrier properties and heat resistance, and environmental protection material, the packaging may be used in many fields.