In modern industrial production, packaging sealing is one of the key factors to ensure product quality and safety. As a professional testing equipment, the packaging sealing tester is widely used in various industries such as food, pharmaceuticals, medical devices, and daily chemical products to evaluate the sealing performance of various packaging materials. This article will provide a detailed introduction to its working principle, technical characteristics, application areas, and selection guidelines.

1、 Working principle

The working principle of the packaging sealing detector is mainly based on pressure difference and flow detection. The most common method is the negative pressure method, which involves evacuating the vacuum chamber to create an internal and external pressure difference in the sample immersed in water, observing the gas leakage inside the sample, and determining the sealing performance of the sample. Another method is the positive pressure method, which involves filling the interior of the packaging with a certain pressure of gas and monitoring the pressure changes or gas flow rate to determine if there is a leak in the packaging.

2、 Technical features:

1. High precision detection: Using high-precision pressure sensors and flow sensors, it can detect small leaks.

2. Multiple testing modes: Provides standard, multi-stage vacuum, methylene blue, and other testing modes to meet different testing needs.

3. Automatic control and data storage: Equipped with a microcomputer control system, it can automatically supply constant pressure air and store test parameters and results.

4. Non destructive testing: The testing process will not cause damage to the packaging and is suitable for finished product inspection.

3、 Application areas:

-Food industry: Testing the sealing of food packaging bags, bottles, cans, etc. to prevent food spoilage.

-Pharmaceutical industry: Evaluate the sealing of drug packaging to ensure the stability and effectiveness of drugs.

-Medical devices: Test the sealing of medical device packaging to ensure a sterile environment.

-Daily chemical industry: used for sealing testing of packaging for cosmetics, detergents, and other products.

4、 Selection Guide for Packaging Sealing Tester:

1. Testing object and leakage rate requirements: Select appropriate equipment based on the size of the testing object and leakage rate requirements.

2. Testing pressure range: Select equipment according to the required testing pressure of the product. For example, low-pressure equipment is suitable for packaging sealing testing, while high-pressure equipment is suitable for hydraulic system testing.

3. Testing frequency and efficiency: If online high-speed testing is required, equipment with high beat requirements should be selected; If it is a laboratory sampling, more emphasis is placed on accuracy and data analysis.