Acrylic coated film
The biggest advantage of acrylic coating is its ability to heat seal at low pressure, which means it can be sealed at a lower pressure, so as not to deform the internal paper box under pressure. According to the online understanding of coating, acrylic acid can also provide a heat sealing window of 50 degrees Celsius (the temperature difference between the starting sealing temperature and the shrinkage temperature). The smaller the window range, the easier it is for the film to contract due to heat. Conversely, it can make the packaging flat and fit the paper box.
Perfume and some cosmetics containing natural essence will gradually evaporate over time, or be polluted by the fragrance of other products on the shelf, so odor barrier films are required for such products. Both acrylic acid and PVDC coatings have excellent gas barrier properties.