| 摘要 |
PROBLEM TO BE SOLVED: To provide a heat insulating fiber material excellent in fire resistance and inorg. fiber scattering preventing properties without lowering processability. SOLUTION: A heat insulating fiber material 1 consists of an org. fiber nonwoven fabric 3, which is formed as a mat obtained by superposing the org. fiber nonwoven fabric and an inorg. fiber mat 2 one upon another and punching them on the side of the org. fiber nonwoven fabric 3 to entangle inorg. fibers by the fibers of the org. fiber nonwoven fabric 3, and the inorg. fibers. In this case, a coating film 4 consisting of an org. resin and borate is provided on the surface of the org. fiber nonwoven fabric 3. |
