| 摘要 |
<p>PURPOSE:To provide the subject packaging material having a specific constitution and enabling the supply of vegetables or fruits without causing the generation of ill odor and the browning and withering of the vegetables, etc., by supplying oxygen in an amount at least sufficient for the survival of the vegetables, etc., thereby maintaining the vegetables, etc., in a hibernated state. CONSTITUTION:The objective packaging material for the sealing of vegetables or fruits is composed of (A) a perforated polymer film and (B) a non-perforated polymer film. At least one of the components A and B has a water vapor transmission of 50-800gm<-2>d<-1> measured at 25 deg.C and 75% relative humidity based on the effective area of the packaging material. The perforation area ratio of the component A is 3X10<-6> to 7X10<-4>% based on the effective surface area of the material. For example, a drawn polypropylene film is used as the component A constituting a surface layer of the material and a drawn nylon film having a water-vapor transmission of 100 gm<-2>d<-1> is used as the component B constituting the other surface layer of the material.</p> |
