| 摘要 |
PCT No. PCT/SE81/00364 Sec. 371 Date Aug. 9, 1982 Sec. 102(e) Date Aug. 9, 1982 PCT Filed Dec. 8, 1981 PCT Pub. No. WO82/02070 PCT Pub. Date Jun. 24, 1982.A heat insulating roller blind is made of two congruent sheets which are joined at their side and bottom edges by a soft elastic band. Valve means allow room air into the space between the sheets and permit the outflow of the air when the blind is rolled up. Tab means are connected to one of the sheets to add in separating them when the blind is unrolled. |
