| 摘要 |
<p>PURPOSE:To control the discoloration or tastelessness of perishables over an extended period of time by providing the substances irradiated with far-infrared ray between sheet like materials. CONSTITUTION:The laminated plates 1 forming a perishables receiving case consist of a plurality of sheet like materials 2 and an adhesive layer 4 containing ceramic particles 3 formed between the sheet like materials. To prepare the ceramic particles 3, the prior art ceramic materials containing the ceramics irradiated with far-infrared ray are used. The perishables are irradiated with the far-infrared ray which is sent out from the ceramic particles 3 in the adhesive layer 4 through the adhesive layer 4 and the sheet like materials 2 in order to alkalize water in the perishables for activation of the structure thereof. For this reason, the perishables are less liable to decaying, thereby preventing the discoloration or degradation thereof over an extended period of time.</p> |
