| 摘要 |
PCT No. PCT/EP94/01042 Sec. 371 Date Jan. 26, 1996 Sec. 102(e) Date Jan. 26, 1996 PCT Filed Mar. 31, 1994 PCT Pub. No. WO94/22712 PCT Pub. Date Oct. 13, 1994A semi-finished composite material for the manufacture of buoyancy products and related products. The semi-finished composite material includes a plurality of layer of elastic and flexible waterproof material with a specific gravity substantially less than that of water, fastening means adaptable for associating the layers to each other so as to form a plurality of air filled spaces by consecutive ones of the fastening means between adjacent layers, wherein the fastening means of a plurality of quiltings spaced from each other so as to form the air filled spaces with the plurality of layers including the air spaces adapted to being further insertable between a lining and a coating. |
