| 摘要 |
FIELD: rescue equipment.SUBSTANCE: present invention relates to a respirator in which the central part of the mask base is welded to the peripheral part. The respirator (10) is proposed, which comprises a base (12) of the mask, at least one filter cartridge (24). The base (12) of the mask has a central part (14) and a peripheral part (16). The filter cartridge (24) is attached to the rigid central part (16). The peripheral part (14) is made of a first thermoplastic material having low rigidity, and the central part (16) is made of a second rigid thermoplastic material. The first thermoplastic material is welded to the second thermoplastic material.EFFECT: respirator having such structure is easy to manufacture, has strong hermetic attachment of its parts to each other, and also has a small weight.17 cl, 4 dwg |
