| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide an antibacterial packaging material in which the dissipation ratio of an antibacterial component is small on producing it and the antibacterial component gradually evaporates on using it and keeps the effect for a long time, by providing a volatile physiological active material having an antibacterial function, originating in a natural material in an adhesive between a basic resin layer and a heat-welding resin layer. SOLUTION: An adhesive layer 2 of a basic resin layer 1 and a resin layer 3 is impregnated with an antibacterial component to form a laminate film and lessen the heat that the volatile antibacterial component receives in the production process of the film in comparison with the heat in the case that the antibacterial component is kneaded in a resin to form a film. And hence, the dissipation of the antibacterial component is reduced. Since the component evaporates while permeating the resin layer, it has sustained releasability and hence, the effect is kept for a long time. It is preferable that orientated polyethylene is used for the basic material side 1 and polyethylene or the like is used for the heat-welding resin layer 3 side, in the laminating resin layers. Methylmethanethiosulfonate or the like is used as a volatile physiological active material originating from an antibacterial natural material but other kinds of materials having the same volatile physiological active materials can be adapted.</p> |
