1. Assemble the iron stand, iron ring, funnel, rubber tube, water-stop clamp and glass plate, adjust the height of the lower iron ring so that the glass plate and the table form a 10° slope.
2. Put the sanitary napkin and its independent packaging bag into a dry beaker of known mass, and weigh the mass of the sanitary napkin when it is dry (bar quality).
3. Fix the dry sanitary napkin at a specific position on the slope, add 50ml of liquid to the funnel, and open the water stop clamp.
4. Take off the sanitary napkin, put it into a dry beaker of known mass together with the individual package, and weigh the absorption capacity of the sanitary napkin for the first surge.
5. Re-fix the sanitary napkin on the slope, add 20ml of liquid to the funnel, and open the water-stop clip.
6. Repeat step 5 twice.
7. Take off the sanitary napkin, put it into a dry beaker of known mass together with the individual packaging, and weigh the absorption of the sanitary napkin for multiple surges.
According to the experimental procedures, the data involved are shown in the following table (in grams):
Dry infiltration amount = 50ml quality - strip quality
The infiltration amount of multiple surges = 20*3ml quality - 50ml quality
Conclusion:
When the dosing liquid flows down the slope, it has a certain speed due to gravity, which cleverly simulates the real situation when the human body uses the sanitary napkin. The dosing liquid flows quickly through the napkin, and the absorbent capacity of the sanitary napkin at this time represents its instant absorption capacity. The first use of 50ml dosing is to understand the situation of sanitary napkins encountering large flow surges when they are dry; and the infiltration test is to use 20ml dosing three times in a row to understand the absorption capacity of sanitary napkins after absorbing some liquid.