BOPP film is a very important flexible packaging material with a wide range of applications. BOPP film is colorless, odorless, tasteless, non-toxic, and has high tensile strength, impact strength, rigidity, toughness and good transparency. BOPP film has low surface energy and needs to be corona treated before gluing or printing. However, the BOPP film has good printing adaptability after corona treatment, and can be printed in color to obtain a beautiful appearance, so it is often used as a surface layer material for composite films.
The film is widely used in the packaging of bread, clothes, shoes and socks, as well as the cover packaging of cigarettes and books. The induced tear strength of BOPP film increases after stretching, but the secondary tear strength is very low. Therefore, there should be no incisions on both ends of the BOPP film, otherwise the BOPP film will be easily torn during printing and lamination. After BOPP is coated with self-adhesive, it can produce sealing tape, which is a market with a large amount of BOPP.
In order to obtain better comprehensive performance, the method of multi-layer composite is usually used in the process of use. BOPP can be compounded with a variety of different materials to meet specific application needs. For example, BOPP can be compounded with LDPE (CPP), PE, PT, PO, PVA, etc. to obtain high gas barrier, moisture barrier, transparency, high and low temperature resistance, cookin.