Airtightness tester, also known as sealing tester or leakage tester, is mainly applied to the sealing test of bags, bottles, tubes, cans, boxes, etc. in the industries of food, pharmaceuticals, medical devices, daily chemicals, automobiles, electronic components, stationery, and consumer electronics.
Based on the test principle can be divided into two categories: positive pressure method and negative pressure method.
Positive pressure method: Positive pressure method of inflation test principle, quantitative determination of a variety of packaging, bottles, caps, hoses, caps and other products sealing leakage; equipment to provide rupture test, creep test, creep to rupture test test a variety of test modes, through the addition of accessories can be open packaging sealing strength test, hose sealing test, packaging restraint By adding accessories, it can be used to test the sealing strength of open package, sealing test of flexible tube, constraint test of package, sealing test of aerosol valve, sealing test of pharmaceutical blister and other items.
Negative pressure method: By vacuuming the vacuum chamber, the specimen immersed in water generates internal and external pressure difference, and the sealing performance of the specimen is determined by observing the specimen's gas leakage or the specimen's expansion and the specimen's shape restoration after releasing the vacuum. The equipment is easy to operate, and the test judgment is simple and intuitive, with a wide range of applications.