Electronic packaging bag manufacturer introduces moisture requirement of ethyl acetate in boiling bag
GB / t3728-2007 has clear requirements for the moisture content and ethanol content of ethyl acetate. The unqualified quality of ethyl acetate (such as water content and alcohols exceeding the standard) often leads to wrinkle quality accident of composite film.
Table 1 shows the water content test data of ethyl acetate of a flexible packaging factory. In the 20 batches of incoming inspection, 4 batches exceed 500ppm (excellent products), one of the electronic packaging bags is unqualified, and the batch is bottled (dealer sub packaged) solvent, and the other batches are tank truck solvent. Most small flexible packaging enterprises buy bottled solvent, and the moisture content index in ethyl acetate is likely to exceed the requirements of qualified products.
Table 1: the test data of water content of ethyl acetate in electronic packaging bags are ppm
The alcohol content in ethyl acetate is often not paid attention to by most of the flexible packaging enterprises. According to the ethyl ester test data (bottled solvent) of a flexible packaging enterprise, only one superior product and two first-class products are found in 14 batches, and the overall quality is poor, so the soft packaging factory should pay attention to it.
Expand knowledge: thickness of composite aluminum foil bag
But the layer thickness can reach 70u-220u, 7c-22c. www.dgbpk.com/
Dongguan Beite packaging materials Co., Ltd
Dongguan special bag, plastic bag, plastic bag, plastic bag