| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a packing base material which has excellent alcohol resistance and sealability and is suitable for packing material for airtightly sealing a beverage container or toiletry container with a lid; and a packing laminate base material formed of the packing base material. <P>SOLUTION: The packing base material has apparent density of 90-650 g/L, a closed cell ratio of 70% or more, and an average cell diameter of 150 μm or less. The packing base material contains a polyethylene resin composition comprising 90-60 mass% of linear polyethylene (α) and 10-40 mass% of high-pressure low-density polyethylene (β). The polyethylene resin composition has: density of 930-960 kg/m<SP POS="POST">3</SP>, a melt flow rate of 0.1-20 g/10min at 190°C under a load of 2.16 kg, one melting point peak of an endotherm curve obtained in temperature raising measurement with a differential scanning calorimeter, and a specific melt tension ratio. <P>COPYRIGHT: (C)2012,JPO&INPIT |
