Determination of vacuum sealing performance of flexible packaging

Sealing performance refers to the ability of packaging to prevent the leakage of its contents and block the intrusion of external substances. During the production, transportation and storage of flexible packaging, leakage is prone to occur at the sealing points due to process defects, material issues, etc., leading to the deterioration and failure of the contents. The sealing performance test of flexible packaging often adopts the vacuum sealing performance test method. By detecting the leakage of the packaging in a vacuum environment, the sealing integrity is judged. The less obvious the leakage, the better the sealing performance of the packaging.

The sealing performance of packaging is a key indicator for ensuring product quality. For food packaging, good sealing can prevent oxygen and moisture from entering, which could cause food to oxidize, become damp and moldy. For drug packaging, it can prevent the drugs from absorbing moisture, being contaminated or the evaporation of active ingredients. For the packaging of daily chemical products, it can prevent the leakage of contents and the deterioration of components. If the packaging is not well sealed, it will not only cause product loss but also may lead to safety hazards, such as health problems caused by food spoilage and the impact of drug failure on treatment effects. Therefore, various flexible packaging and related industries have strict requirements for sealing performance, which need to be tested by professional instruments.

The ST-6 vacuum sealing performance tester is designed and manufactured in accordance with the national standards GB/T 15171 and ASTM D3078. It is applicable to the sealing performance testing of industries such as food, plastic flexible packaging, wet wipes, medicine, and daily chemicals. It can be used to test various types of packaging including flexible packaging bags, rigid packaging bottles, medicine bottles, metal cans, blister packaging, and composite packaging. By using this instrument to evacuate the vacuum chamber and observing whether there is any gas escaping from the sample immersed in water or the shape recovery after the sample expands and the vacuum is released, the sealing performance of the packaging can be quickly determined, providing data support for the optimization of packaging processes and quality control.