| 摘要 |
The insulator has two aluminum foils (1) on its outer surfaces, an air bubble film layer (2) and a plastic foam layer (3). Two inner aluminum foils (6) separate the air bubble film and plastic foam layers of the insulator. The layers are welded or pasted in a homogeneous manner on their entire surface. A central layer is sandwiched between the layers. The central layer is held between the foils (6). |
