| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a packaging film with outstanding heat barrier properties which easily enables the direct hand contact with a container having a high surface temperature with the hand like a hot drink immediately after taken out of a warmer and keeps the temperature of the container constantly for some time. <P>SOLUTION: This packaging film is formed of a nonwoven fabric with a basis weight of 5 to 200 g/m<SP>2</SP>laminated on at least one side of a heat-shrinkable film with a thickness of 20 to 100 μm through an adhesive layer. The adhesive layer is wholly or partially formed on the film, and a heat barrier layer with an air effect is formed between the heat-shrinkable film and a non-heat shrinkable film or in a part where no adhesive layer is formed, when the heat barrier packaging film is thermally shrunk. In addition, the surface temperature of the heat barrier packaging film when the container at a surface temperature of 60°C is wrapped with this film after thermally shrinking the film 10%, is lower than the surface temperature of the container by 1 °C or above. <P>COPYRIGHT: (C)2004,JPO |
