Aluminum foil bag manufacturer introduces the test qualification standard of boiled bag
① There was no wrinkle or delamination on the surface of the bag, and the peel strength was detected after boiling.
② The printing ink has no discoloration or permeating phenomenon;
③ There is no leakage and breakage of the aluminum foil bag; there is no obvious running edge phenomenon at the sealing edge (the running edge width is controlled within 2mm).
Expanding knowledge: the effect of boiling point on solvent volatility
Generally, the solvent with boiling point of 60 ~ 150 ℃ can be used for gravure printing ink. Generally, the lower the boiling point of solvent, the faster the evaporation speed of aluminum foil bag. However, there are also exceptions, such as ethyl acetate and ethanol boiling point is similar, but the evaporation rate of ethyl acetate is almost twice that of ethanol, so ethyl acetate is commonly used to replace ethanol in plastic gravure printing ink with high printing speed. In summer, the temperature is high, the solvent volatilizes quickly, and the price of ethanol is low. www.ycritai.cn/
Dongguan Beite packaging materials Co., Ltd
Dongguan special bag, plastic bag, plastic bag, plastic bag