PACKAGING MATERIAL AND METHOD FOR USING THE SAME

PROBLEM TO BE SOLVED: To provide a new, unique and excellently versatile packaging material or the like capable of storing not only an object to be packaged with a little water content but also the object to be packaged containing a large amount of water content and a liquid component, for a long period at a high quality, and capable of suppressing an excessive deterioration of quality of a package, the object to be packaged in the package and the packaging material even when temperature and humidity in the package are changed. SOLUTION: The packaging material is formed by molding a resin composition containing a thermoplastic resin, and includes at least one moisture transmission controlling layer having a transition region where an increase in water vapor transmission amount WVTRfrom a reference temperature TS(°C) to a temperature TS+10(°C) of 2-100 times of an increase in water vapor transmission amount WVTRfrom TS-10(°C) to the reference temperature TS(°C), in a plot-chart of temperature (°C)-water vapor transmission amount WVTR(g/(m2h)) measured under a moisture condition of 60%RH based on JIS L1099 A-2 method, and having a reference temperature TS(°C) in the range of 0-100°C. COPYRIGHT: (C)2011,JPO&INPIT