We can know that aluminum foil bags are not plastic bags, and can even be said to be better than ordinary plastic bags. When you want to refrigerate or pack food now, and you want to keep the food as fresh as possible, aluminum foil bags are the best choice. Common aluminum foil bags generally have anti-gloss characteristics on their surface, which means that they do not absorb light and are made in multiple layers. Therefore, aluminum foil paper has both good shading properties and strong insulation. The composition of aluminum is inside, so it also has good oil resistance and softness. The aluminum foil bag is non-toxic and has no special smell. It is definitely a green product, an environmentally friendly product, and an aluminum foil bag that also meets the national hygiene standards. In recent years, it has also been widely used in the food industry. It can be used to package small snacks and can also be used to package their own food.
However, due to the thickness of the aluminum foil bag and the influence of the production process, the aluminum foil bag will inevitably have pinholes and ruptures due to the influence of the process during production and use. Once these problems occur, the protective effect of the aluminum foil bag on food will be completely lost. Therefore, manufacturers must use food packaging material testing equipment to detect aluminum foil bags.
The testing of aluminum foil packaging includes sealing testing of aluminum foil packaging, heat sealing performance testing of aluminum foil bags, surface printing of aluminum foil bags, ink coating quality, drop resistance, impact resistance performance testing, etc.
Now GBPI tells you what the specific testing requirements of various projects are:
1. Sealing inspection of aluminum foil packaging
Consumers sometimes buy some foods in aluminum foil bags from the supermarket, and they feel that the bags are not vacuum sealed at the same time there is air leakage, and the taste of the food is not fresh enough. This is because the sealing performance of the aluminum foil bags of food manufacturers is not good. , There is an air leakage phenomenon, and the sealing test is not performed before the product is put on the market. Testing the sealing performance of aluminum foil bags is the basis for ensuring the overall integrity of food packaging, the effectiveness of the food shelf life, and the safety of food use. The electronic leakage tester provided by GBPI TESTER adopts the test principle of negative pressure method, and the test is based on the standard GB15171 flexible packaging bag sealing performance test method, etc., which perfectly solves whether the air tightness of the aluminum foil bag is good or not.
Since the sealing part of the video aluminum foil bag is fused together by the high temperature of the aluminum foil film, the fusion strength determines the overall sealing integrity of the aluminum foil bag. , The heat sealing performance reflects the basic sealing performance of the aluminum foil bag and it is not easy to open and leak. The "Heat Seal Strength Tester" provided by GBPI TESTER adopts the hot pressure sealing method. The sample is placed between the upper and lower heat seal heads, and the sample is sealed at a preset temperature, pressure, and time.
3. Drop resistance and impact resistance test
Food aluminum foil bags will inevitably be impacted by external forces during bagging, transportation, storage and handling, and accidents such as falling from high altitudes. Therefore, aluminum foil bags should have a certain degree of mechanical strength. For testing the drop resistance and impact resistance of aluminum foil bags, you can refer to the "Falling Dart Impact Tester" under the GBPI Food Packaging Inspection Series. Reference standards: ISO7765-1, GB/T 9639, GB/T 15267, ASTM D1709, JIS K7124.
For the performance testing of aluminum foil packaging bags, there are also gas permeability testing, tensile performance, heat shrinkability testing, etc., for more information about aluminum foil bag testing or plastic film testing equipment, etc., you can directly email us.
info@gbtest.cn
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