| 摘要 |
PROBLEM TO BE SOLVED: To provide an expandable, three-dimensionally shaped sheet which is expandable and good in touch, makes a feeling of cushioning be maintained, and is good in appearance. SOLUTION: The expandable sheet has a first layer made of an expandable sheet-like material and a second layer. The first layer is protruded to form numbers of hollow projections, while recesses are formed among the projections. In a part of the recess, the first layer and the second layer are joined together to form a joint. A part of the recess is made a non-joined part. Each joint is positioned on a straight line in the sheet flow direction. COPYRIGHT: (C)2007,JPO&INPIT
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