It’s estimated that approximately 35% of deterioration accidents of food during guarantee period are caused by inferior packaging materials. Meanwhile, about 65% of the food packages are with hidden dangers. Barrier property is one of the key indexes for the evaluation of the properties of packaging materials and shelf life periods of the packed contents. Correspondingly, the barrier property testing of biodegradable packaging material, a newly developed material in recent years, has become a research focus of the packaging quality inspection institutions. This thesis introduces the significance of barrier property testing of biodegradable packaging films, starch-based biodegradable plastics and the complete verification process of its barrier property by Labthink. The thesis hopes to provide guidance for barrier property testing for manufacturers of biodegradable packaging materials. Continue reading
The article introduces the actual quality status quo of edible oil bottles through a great amount of testing data, and confirms the existence of quality differences among different bottle manufacturers: certain problems do exist in edible oil bottle packaging. The article can help further perfect the standards on edible oil packaging in China. Continue reading
Based on material characteristics displayed during high barrier property material transmission rate testing, this article introduces the rules and corresponding reasons for instrument choices of various methods. Continue reading
Based on experiences and material characteristics indicated in the barrier property testing for high barrier property materials, this article proposes corresponding operation suggestions for different barrier property testing items and methods, so as to better satisfy the testing demands for high transmission rate specimens with the common barrier property testing instruments. Continue reading
The properties of cigarette packaging materials are the key factors affecting the storage period in relation to the different storing environments. This article analyzes the testing demands of BOPP film (bi-axially oriented polypropylene film), and introduces the tests for several properties of BOPP film, including water vapor transmission rate , flavor protection, coefficient of friction, heat shrinkage and thickness, etc. Continue reading