| 摘要 |
PURPOSE:To get a quick taking-off dust-protective mask which can be put on or taken off instantaneously according to the purpose of works by arranging the constitution such that it can be easily mounted at or removed from the vacant part of the nostril part of a dust-free headgear for clean room. CONSTITUTION:This is provided with a dust-free headgear, a dust-preventive material 2 of a quick-taking-off dust-protective mask, and hooks 3a and 3b whose shape can be changed for attaching itself to the dust-free headgear 1. And when the work accompanied with dust occurrence is performed during the work in a clean room, the dust-preventive material 2 is inserted into the vacant part of the dust-free headgear 1. Taking-off will suffice after use. |
