| 摘要 |
An inflatable bag (10) for packaging and protecting an object (70) received within the bag, comprises a web of a foil material defining an elongated configuration having a first set of opposite parallel edges (33, 35). The web is folded into a four-ply assembly (12; 14; 16; 18) folded transversely relative to the edges (33, 35) and defining four foil layers of substantially identical shape, A first and a second foil layer (12; 14) of the assembly are joint to one another by a first set of joints extending substantially parallel with said edges and defining a first chamber (I). The second foil layer (14) and a third foil layer (16) of the assembly are interconnected through a first fold (20) and joint to one another by a second set of joints extending substantially parallel with the edges and defining a second chamber (II). The third foil layer (16) and a fourth foil layer (18) of the assembly are joint to one another by a third set of joints extending substantially parallel with said edges and defining a third chamber (III). The second chamber (II) constitutes an inner chamber communicating with the environment through a first opening opposite the first fold (20) for allowing the object (70) to be introduced into the inner chamber through the first opening (20). The first and third chambers (I; III) communicate with one another through a passage delimited by the first fold (20) and a second fold (22) interconnecting the fourth foil layer (18) and the first (12) or the second foil layer (14) and further communicate with the environment through a closable and sealable, second opening for allowing an inflation medium to be introduced into the first and third chambers (I; III) through the closable and sealable, second opening (Figs. 1 and 6a, 6b). |
