| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a lid material having superior thermal stability, which has a sticking prevention effect of yoghurt being contents to the backside of the lid, without reducing the sticking prevention effect due to the thermal influence applied when producing and filling/sealing. <P>SOLUTION: In the lid material having a base material layer 1, a thermally sealing layer 5, and a sticking preventing layer 6 comprising hydrophobic fine particle, the thermally sealing layer 5 is constituted of resin composition compounding ethylene-unsaturated ester copolymer comprising the first component (I) having MFR of 50 to 500 g/10 min and containing 20 to 40 wt.% of unsaturated ester, the second component (II) having MFR of 10 to 50 g/10 min and containing 10 to 30 wt.% of unsaturated ester, and the third component (III) having MFR of 500 to 5,000 g/10 min and containing 10 to 30 wt.% of unsaturated ester and wax having softening point or melting point of 80 to 130°C, and tackifier wherein the resin composition has a softening point of 90 to 160°C and melting viscosity of 2,000 to 4,000 mPa at 160°C. <P>COPYRIGHT: (C)2013,JPO&INPIT |
