| 摘要 |
PROBLEM TO BE SOLVED: To obtain a slab or molded product extremely suited to a building material such as a sound insulating material and/or a heat insulating material. SOLUTION: A porous slab or molded product is produced by bonding ground hard polyurethane foam flakes having bulk density of 30-200 kg/m<3> , pref., 50-130 kg/m<3> and an average particle size of at least 2 mm and containing an adhesive in an amt. of 3-25 wt.%., pref., 5-12 wt.% and used as an impact-resistant sound insulating material and/or a heat insulating material and/or a sound absorbing material. |
