| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a floor mat capable of improving the sound absorption coefficient of a prescribed frequency by an easy method. <P>SOLUTION: The floor mat 1 includes a backing layer 10 and a tuft layer 30. The backing layer 10 includes: sheet-like backing 12, projections 11 for separating the backing 12 and a floor portion 90; and through holes 15 communicating with the space between the floor portion 90 and the backing 12 to constitute resonators 60. <P>COPYRIGHT: (C)2010,JPO&INPIT</p> |
