| 摘要 |
PROBLEM TO BE SOLVED: To provide a bubble wrap not having so large spaces as much as possible, because the bubble wrap is constructed with a sheet of film provided with a plurality of cylindrical concave parts, which is bonede to another film to cover the concave parts, the shape of bubbles are all cylindrical shape, conventional cylindrical shaped bubbles are placed in staggered arrangement to reduce the gap, and thereby a large space is located at the center of three bubbles and this part does not have an buffering ability. SOLUTION: In the bubble wrap, the shape in bonded parts of closed cells 2 formed between two sheets of film is regular hexagon. The shape of the closed cells is tapered so as to narrow from the bonded parts toward the ends thereof. COPYRIGHT: (C)2010,JPO&INPIT
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