| 摘要 |
PROBLEM TO BE SOLVED: To obtain a recyclable sound-absorbing material having excellent sound absorbing performance in audio frequency range and insecticidal action by using a fiber containing a low-melting component and an insecticidal fiber, constituting the constituent fibers with the same kind of polymer and arranging the fibers parallel to the surface of the product. SOLUTION: This sound-absorbing material is composed of fibers derived from the same kind of polymer and at least contains a fiber A containing a thermoplastic polymer R1 having a melting point lower than that of the other fiber and an insecticidal, fiber B. The fibers A and the fiber A and the other fiber are bonded with each other through sporadically distributed bonding points and the constituent fibers are randomly arranged on a plane parallel to the surface of the sound-absorbing material. The insecticidal fiber B is preferably produced by using a pyrethroid compound as the insecticidal component. The product is useful e.g. as a sound-shielding wall for vehicle, house or highway. |
