Manufacturing Aluminium Foil For Flexible Packaging
According to expert analysis, about 30% of food shelf life spoilage events are caused by food packaging materials, and about 60% of packaging materials have potential safety hazards. Barrier performance is one of the important indicators of packaging materials. The excellent barrier properties of packaging materials can prevent the intrusion of gas, so as to prevent the product from being damp and mildew. Some materials require good gas permeability and moisture permeability to facilitate the gas inside and outside the packaging. exchange. Therefore, the test of air permeability and moisture permeability is an important index for the barrier performance test of food packaging plastic and aluminum foil composite film and bag.
The tensile properties of flexible packaging aluminium foil directly affect the service life, pressure resistance and burst resistance of composite films and bags.This test can effectively solve the damage problem caused by insufficient tensile strength of the selected packaging material.
The airtightness of food packaging plastic and aluminum foil composite films and bags is also an important performance index. Especially in the food packaging industry, airtightness also has a great influence on the quality of products. Poor sealing is the main cause of leakage and corruption in the future. There are many methods for sealing test. The most commonly used method is to use a tightness tester, using the principle of vacuum, according to national standards, hold at -30kpa, -50kpa, -70kpa, and -90kpa for 0.5 minutes. Pay attention to the vacuum during the test. And the leakage of the sample during the vacuum holding period, observe whether there are continuous bubbles generated, and when there are isolated bubbles, it is not considered as a leak. Through this tightness measurement to measure the quality of the packaging bag, and then to determine the rationality of the tight packaging process
China High Quality Home Use Aluminium Foil 8011 Alloy For people in the aluminum foil industry, 8011 alloy can be said to be the most widely used alloy.
