| 摘要 |
PURPOSE: A method for vacuum packing vacuum insulating materials and a vacuum package using the same are provided to have excellent sealing and insulation properties comparable with previous single sealing structure. CONSTITUTION: A method for vacuum packing vacuum insulating materials is as follows. Upper and lower packing films(10) for vacuum packing an inner filling material(20) is composed of three stages structure, formed of an LPP film layer(11), an aluminum thin film layer(12), and a PET film layer(13) from inside. The edge length of the aluminum thin film layer is extended longer than the LPP film layer as much as at least a gap for sealing. The edge length of the PET film layer is extended longer than the aluminum thin film layer as much as at least a gap for sealing. The each layer edge of the upper and lower packing films are sealed with same layers to vacuum pack in multi-stages.
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