| 摘要 |
PROBLEM TO BE SOLVED: To prevent adverse influence by heat transfer to the inside of a battery at infrared ray reflow process of an electronic base board by covering the surface of an enclosure material with an infrared ray reflecting layer. SOLUTION: An enclosure material B of a battery has tack sealing, and is composed of, for example, acrylic resin, an aluminum evaporation film and a thermally contractible film toward the outside from the inside. An infrared ray reflecting layer is formed on its outside surface. A raw material having specular glossiness not less than 50%. is used as the infrared ray reflecting layer. For example, metal, resin, paper, rubber, cermaics or the like on which the metal is evaporated and laminated and which are plated with the metal and are lined with it and on which it is printed, can be applied as such a raw material. |
