| abstract |
(57) [Problem] To provide a laminate capable of obtaining a packaging bag having excellent gas barrier properties, moisture-proof properties, fragrance retention properties, etc., and also having excellent sealing properties and excellent appearance when formed into a packaging bag. To provide a manufacturing method thereof. SOLUTION: A polypropylene (PP) layer / adhesive resin layer / saponified ethylene-vinyl acetate copolymer (EVO) H) In producing a laminate having a layer configuration of layer / adhesive resin layer / heat seal layer, polypropylene (PP) And co-extrusion of adhesive resin, polypropylene (PP) / After obtaining a multilayer sheet having a layer constitution of an adhesive resin, the multilayer sheet is stretched at least in the extrusion direction (MD direction), and then a saponified ethylene-vinyl acetate copolymer ( (EVOH) and an adhesive resin are sequentially co-extruded, then stretched in the width direction (TD direction), and a heat seal layer is further laminated on the surface of the adhesive resin layer. |