| 摘要 |
PCT No. PCT/CH84/00001 Sec. 371 Date Sep. 13, 1984 Sec. 102(e) Date Sep. 13, 1984 PCT Filed Jan. 9, 1984 PCT Pub. No. WO84/02654 PCT Pub. Date Jul. 19, 1984.A device for perfuming ambient air or closed locals comprises a chamber having at least one polymer wall allowing the diffusion of active odoriferous substance vapors into the environning medium, the polymer wall being covered with a thin layer of paper coated with a polymer sheet to which adheres a protection sheet which is impervious to the active substance vapors. Such a device has the advantage of providing for the preservation of the active substance without any loss during prolonged periods of time before use. |
