| 摘要 |
An air pillow includes a first sheet; a second sheet; gussets; and a valve adapted to introduce or release air therethrough. The valve is joined to the first or second sheet through high-frequency heating. The first and second sheets are joined together at peripheral portions thereof through high-frequency heating. The gussets are disposed between and joined to the first and second sheets through high-frequency heating such that the gussets are located in a head rest area. |
