Complex sheet, has central body provided with weldable foamed sheet whose cavities are protruded on sides of central body, external bodies include two weldable sheets, and metallic outer layers respectively formed on inner sheets

摘要

The sheet has a central body provided with a weldable foamed sheet (2) whose cavities (23) are protruded on sides of the central body. External bodies include two weldable sheets (3, 4) that are metalized, and metallic outer layers (32, 42) respectively formed on sealable inner sheets (31, 41) that are attached with each other on central portions (24, 25). Independent claims are also included for the following: (1) a method for manufacturing a complex sheet (2) a device for manufacturing a complex sheet.