Shrink film shrink packaging commonly used in three different ways
And with boiling water shrinkage
This contraction out of product packaging is beautiful, steam shrink machine is this principle!
Second, hair dryer shrinkage
Apply to small quantities of products, quick and easy! Open the shrink machine warming process may be saved!
Third, by ordinary heat shrink shrink
Suitable for continuous shrinking products in large quantities, higher than the efficiency of air duct!
Of course, there are other shrinkage, but on the whole, is to rely on heating for contraction, if only two products need packaging or direct fire heating for contraction, the author packaged in a gift box with a lighter before!