| abstract |
Provided are: a packaging material wherein even when a hermetically sealed package of fresh produce or the like is stored in refrigerated state for a long time, condensation does not form on the inside of the packaging material and the packaged object does not dry out; and a usage method therefor. The packaging material is constituted by a laminate film (10, 50) having a cellulose-acylate-containing base material (11) and a resin layer (12). The resin layer (12) is formed on one surface (11a) of the base material (11) and contains a mixture of an acrylic resin and a cellulose derivative, a silicone elastomer, and/or a urethane elastomer. The packaging material is composed of the laminate film (10, 50) which has a moisture permeability at 40˚C and relative humidity of 90% that falls into the range of 60g/m 2 /day to 700g/m 2 per day. |