| 摘要 |
<p>A packaging material which is a laminated packaging material comprising a base material, an outermost thermoplastic material layer and an innermost thermoplastic material layer, characterized in that it further comprises at least one intermediate layer provided between the base material and the innermost layer, the innermost layer and said intermediate layer comprises a polyethylene resin, and the polyethylene resin in the intermediate layer has a density higher than that of the polyethylene resin in the innermost layer; a packaging case comprising the packaging material; and a method for producing the packaging material. The packaging material uses general and inexpensive resins and also has flavor-retaining property, that is, it can provide a packaging case markedly reduced in the escape of a flavor component through the body thereof, and further, the material is excellent in heat-sealing properties.</p> |
