| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a device for keeping a food product fresh capable of stably keeping freshness of a food product or the like over a long period and enhancing the value of commodity. <P>SOLUTION: A packaging cover 3 covering an adsorbent 2 from the outside is formed by superposing two sheets of upper and lower lamination films 4 on each other and sealing the peripheral parts 4A of respective lamination films 4 in such a state. The lamination film 4 is constituted of: a transparent or translucent film body 5 formed by using a film made of resin material having both of alcohol permeability and heat sealing property, allowing a freshness-keeping liquid to permeate therethrough in such a state that the freshness-keeping liquid is vaporized and prevents the permeation in the liquid state; a printed layer 6 formed on an inner surface of the film body 5; and an inner nonwoven fabric layer 7 disposed on the inner surface of the film body 5 while holding the printed layer 6 between the film body and the inner nonwoven fabric layer, and made of inner and outer nonwoven fabrics 7A, 7B containing fibers having alcohol affinity and heat bonding property. <P>COPYRIGHT: (C)2012,JPO&INPIT |
