| 摘要 |
The invention relates to a method for producing a vacuum insulating body (vacuum insulation panel; VIP) made of a vacuum-tight foil (1) or foil connection and a flat filter material (5), in particular a single-layer or multi-layer non-woven material, which is air-permeable but is not permeable for a powdered filling material (4). The flat filter material (5) is firmly connected to the film (1) at the edge in such a way that the connecting edge (6) is in any case impermeable for the powdered filling material (4). Thus a receiving space (7) is produced between the vacuum-tight foil (1) and the flat filter material (5). Said receiving space (7) is filled by means of a filling element (8) of a filling device (9). The filling element (8) passes through the flat filter material (5). After the filling is completed, the filling element (8) is removed from the flat filter material (5) and the flat filter material is closed again at the location concerned. The composite of the film (1) and the filter material (5) thus produced and the filling material (4) located in the receiving space (7) is brought as a whole to a lower pressure and the receiving space (7) and the filling material (4) located therein is ventilated through the flat filter material (5). Subsequently, and while the vacuum is further sustained, the vacuum-tight film (1) is firmly closed completely all around the edge in such a way that said connecting edge (10) is impermeable for air and thus the receiving space (7) is closed as a whole in an airtight manner. |
