| 摘要 |
PURPOSE:To obtain a laminated film capable of effectively exhibiting vaporizing effects for a long period, comprising three layers of an intermediate layer containing a volatile mildewproofing agent, a permeable layer to permeate the vapor of the mildewproofing agent on one side of the intermediate layer and a protecting layer on the other side. CONSTITUTION:A material 5 to be packed is put in a bag using a laminated film 3 consisting of an outer layer 1 having gas barrier properties made of a material having preferably gas barrier properties, an intermediate layer 2 which is formed by blending printing ink or a solvent with a volatile mildewproofing agent and applying the blend to the inner side of the outer layer having gas barrier properties and an inner layer 3 made of a material which permeates a very small amount of the volatile mildewproofing agent and adsorbability, a sealing part 4 is sealed, closed and the bag is used. Prolonged effects of the mildewproofing agent are obtained. Since the mildewproofing agent is contained in the intermediate layer, the packed material is not contaminated when a mildewproofing agent to deteriorate the physical properties of the intermediate layer is used and the intermediate layer is released. The film is lightweight and readily handleable so that the bag can be inexpensively manufactured.
|
