Soft Rubber Respiratory Mask Production Line SolidWorks 3D Model

The total inspiratory resistance of the respiratory mask should be not more than 350pa, and the total expiratory resistance should be not more than 250pa. Number and requirement of respiratory mask resistance test: 4 samples, of which 2 are untreated samples and the other 2 are pre-treated samples. If the tested samples have different numbers, there should be two samples for each number, of which 1 is untreated sample and the other 1 is pre-treated sample. n Instructions: n1, check the airtightness and working condition of the testing device, adjust the ventilation volume to 85±1 L/min, and set the system resistance of the testing device to 0. n2. Wear the sample under test on the matched test head mold, adjust the wearing position of the mask and the elasticity of the headband to ensure that the mask fits the test head mold. Then adjust the ventilation to 85±1 L/min, measure and record the inspiratory resistance.