A multi-layer laminated resin film comprising top and bottom outer laminates of sandwich structure each including a layer of reclaimed synthetic resin mixture entirely surrounded by a second fresh resin layer and an inner layer interposed between and secured to the inside surface of the top and bottom...http://www.google.co.uk/patents/US4410602?utm_source=gb-gplus-sharePatent US4410602 - Multi-layer laminated resin film
