Three-dimensional low-pressure folding mask
A three-dimensional, low-pressure technology, which is applied in the field of masks, can solve the problems that vibration deformation increases the probability of microparticle penetration, cannot obtain a large depth space, and increases the probability of microparticle penetration, so as to increase the effective filtration area and reduce The effect of transmission probability and small deformation
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[0031] Embodiments of the present invention are as figure 1 As shown, the three-dimensional three-dimensional low-pressure foldable mask is provided with a layer of filter sheet 1, and a "Zigzag" shape is arranged on the filter sheet for one-time folding 2, and a "Zigzag"-shaped double folding 3 is arranged on the filter sheet, and the filter sheet is folded. Adhesive on all sides, the filter is connected with a fixing belt 4, the first fold and the second fold adopt a cross structure of a horizontal and a vertical "ten", when in use, pull the middle folded position outward to form a cavity in front of the mouth and nose, and pull After the filter is opened, most of it still has folds, so the space between the filter and the face is limited, which is conducive to the formation of a virtuous circulation of airflow, and the folds can also stabilize the cavity structure of the filter and reduce the deformation with the breathing airflow. Only the adhesive parts around the filter ...
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