Film will also play personality, must pay attention to this in the process of composite membrane in the use of BOPA 5 points!

BOPA film is widely used in the field of composite film packaging, and BOPA film easy water be affected with damp be affected with damp, after be affected with damp be affected with damp, in addition to the wrinkle, generally transverse elongation, longitudinal shortening, elongation up to 1%. Therefore, in the application, shall be in line with the characteristics of BOPA film. 1, BOPA film easy water be affected with damp be affected with damp, lead to changes in membrane wrinkling and some physical properties, bring adverse processing. So should be avoided in a rainy, humid climate environment. Suggest to stop using relative humidity is more than 80%. Usually also do best is out of the box is used. Left with the BOPA film should be immediately sealed packaging, put into the box, in case of be affected with damp be affected with damp. 2, after printing products also need to pay attention to moistureproof. Printing immediately after sealing packaging, composite as soon as possible, to make composite membrane after product as a result of the action of other composite materials, can be stored for a long time, the quality is relatively lower. 3, printing, or composite BOPA film, should be the guide roll all contact with the membrane on the machine, roller clean. 4, because of BOPA film with solvents such as toluene, isopropanol have good affinity, so should take into consideration the when printing using toluene, isopropanol, two kinds of solvents, to reduce the solvent residual amount of print. 5, in have the aluminum foil composite film, such as BOPA film is different, the surface tension of the two sides in the composite surface tension values should be low side with aluminum foil, high side combined with other materials.