What are the numbers for permeation rates before and after Bloom Seal ® TREATMENT ?
Data does exist for weight loss of pure solvents in Bloom Seal ® containers and for many (but not all) there is a substantial reduction of product loss achieved by Bloom Seal ®. However, we do not advise utilising this data for package engineering. Most product formulations are a complex mixture of ingredients. Some may permeate some may not. Some may be important to efficacy, some may be inert fillers, extenders or carriers. Some may be important, to retain at the levels packaged, others may be inconsequential. Additionally, permeation rates are significantly altered by the presence of co-permeants. An example from the auto industry is that permeation of petroleum fuel through plastic gasoline tanks is increased by the presence of alcohols in the fuel. Traced quantities of fuel injector cleaner in the fuel mix also impact actual fuel permeation rates. Thus it is unreliable to use permeation data for single solvents to predict permeation of complex mixtures. The only valid approach is
