| 摘要 |
The present invention relates to a light weight double floor material for the interior of a building which has shock absorbing and soundproof properties and which is light in weight and easy to construct with high strength; and, more specifically, to a light weight double floor material for the interior of a building which is composed of a polypropylene foam having the specific density range for securing excellent shock absorbing and soundproof properties and, in particular, for reducing the dead load of a building and which facilitates transportation and construction by having the upper panel and support of the double floor material formed in a block inserting type. |
