| 摘要 |
PURPOSE:To prevent commodity damage with less work, by making a package with expandable material which allows gas filling in it. CONSTITUTION:Body 1 is inflated by pouring gas through the valve 2 to resist mainly against the shock from outside, and auxiliary body 3 is likewise inflated through valve 4 to protect interior respectively, and protect commodities from damage. After use, valves 2 and 4 can be opened to discharge the filled gas, and the body 1 and auxiliary body 3 can be contracted, therefore they are light and not bulky to be easily stored and used repeatedly. |
