| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a food packaging material wherein no condensation occurs inside even if the material is heated in a microwave oven, strength at a heat- sealed part is high and breakage is not likely to occur by forming a melt-blown nonwoven cloth layer of resin with a specific ethylene content in all resins. SOLUTION: A food packaging material comprises a non-permeable sheet layer as an outer layer, a pulp fiber sheet layer 2 having water absorbency as an intermediate layer and a melt-blown nonwoven cloth layer 1 having permeability for moisture and air and also waterproofness as an inner layer. The melt-blown nonwoven cloth layer 1 is formed of ethylene-polypropylene random polymer copolymer resin with an ethylene content in all resins of 2 to 10% or mixed resin of polypropylene-containing resin and ethylene-containing resin. Since this food packaging material itself has ability for absorbing moisture and water to prevent condensation, it can be heated in a microwave oven as it is. In addition, since it has high heat-sealing strength, a heat-sealed part of a package may not break due to peeling.</p> |
