| 摘要 |
PCT No. PCT/FR96/00563 Sec. 371 Date Jan. 16, 1998 Sec. 102(e) Date Jan. 16, 1998 PCT Filed Apr. 12, 1996 PCT Pub. No. WO96/32613 PCT Pub. Date Oct. 17, 1996A method for closely protecting materials (10) sensitive to contamination by airborne contaminating agents and placed on a work surface (P). At least one decontaminated gas stream (1, 2) is fed from either side towards the materials in a direction substantially parallel to the work surface, and each gas stream (3) leaves the work surface in an intermediate area between the edges of the work surface and in a direction substantially perpendicular thereto. Alternatively, at least one gas stream is fed towards the materials from above the work surface at an intermediate area between the edges thereof, and in a direction substantially perpendicular thereto, and each gas stream leaves the work surface in a direction substantially parallel thereto and on either side of the materials.
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