| 摘要 |
<p>A laminated material for packaging food, characterized in that the laminated material (10) comprises a paper core layer (11), a quality-maintaining intermediate layer (12) laminated inside the core layer, and an innermost layer capable of being sealed by heat (13), wherein the quality-maintaining intermediate layer comprises a blend polymer which is capable of being coated by extrusion, composed of 50 to 95 % of a polymer component A of nylon-MXD6 or EVOH, and 5 to 50 % of a polymer component B of nylon 6, nylon 66 or a blend thereof or PET, and is produced by being directly extruded and laminated on the core layer, and wherein the innermost layer comprises a linear low-density polyethylene having a narrow molecular weight distribution and has the following property parameters: a mean density of 0.910 to 0.925, a peak melting point of 100 °C to 122 °C, a melt flow index of 5 to 20, a swelling ratio (SR) of 1.4 to 1.6 and a layer thickness of 5 to 50 νm; and a method for producing the packaging material. The laminated material can be used for increasing the strength of a package having barrier property and improving the productivity and the cost/performance ratio for such a package.</p> |
