How to check whether the cosmetic pump head is qualified
After the production of the cosmetic pump head is completed, its eligibility should be checked uniformly. The production sample can be put into production after it is qualified, and then put on the market for use. Unqualified products need to be recycled and re-produced. How to check whether the cosmetic pump head is qualified Woolen cloth?
1. Heat and cold resistance test
Choose the bottle matched with the pump head, inject the corresponding volume of water according to the net content of the bottle, and test it in a constant temperature box at 48 degrees for 24 hours. This is a heat resistance test. Place it in the refrigerator at minus 5 degrees to 15 degrees for 24 hours. It is a cold resistance experiment.
2. Appearance inspection
Under natural light, observe the integrity of the pump head at a distance of 30-40cm, including the color, whether the pump head is smooth or not, whether there is obvious damage, cracks, etc.
Three, rigorous inspection
Fill the matching bottle with an appropriate amount of water, tighten the pump head and the bottle body, place them in the vacuum box on the side, maintain the corresponding atmospheric pressure for five minutes, and observe whether there is any water leakage.
The above several experiments are more commonly used, and there are also pump head rebound experiments, pump output experiments, etc., and the results are good.
