Transfer material

Abstract

Abstract PURPOSE:To impart metallic luster to a container for food to be cooked in a microwave oven and prevent electric discharge, combustion, heat shrinkage or the like from occurring, by causing a vapor-deposited metallic layer of a transfer material to have an insular structure. CONSTITUTION:In a transfer material comprising a releasable layer, a protective layer, a vapor-deposited metallic layer and an adhesive layer sequentially laminated on one side of a base, the vapor-deposited metallic layer is provided in an insular structure and made to have a microwave-transmitting property, an insulating property and metallic luster. The size of each islet in the insular structure is about 200 Angstrom -1mum. If the size is less than 200 Angstrom , metallic luster can not be obtained. If the size is more than 1 mum, the insulating property is lowered, and microwave can not be transmitted through the vapor-deposited layer. The spacing between the islets is 100-5000 Angstrom . If the spacing is less than 100 Angstrom , electric discharge, combustion or heat shrinkage will occur. If the spacing is more than 5000 Angstrom , metallic luster can not be obtained. A metal for forming the vapor-deposited metallic layer is optimally Sn, an Sn-Al alloy, an Sn-Si alloy or the like. The film thickness of the vapor deposited layer, in terms of transmittance, is optimally 1-15%, for obtaining the insular structure of the vapor-deposited metallic layer.

Inventors

• 👤 Nobuo Kuwabara
• 👤 桑原　信夫
• 👤 Keiichi Yoshino
• 👤 吉野　恵一
• 👤 Shigeru Aizawa
• 👤 茂 相沢

Bibliographic Details