What is bopp film made of

What is bopp film made of?

The production of BOPP film is to make the melt of high molecular polypropylene into sheet or thick film through a long and narrow die, and then stretch it in two vertical directions (longitudinal direction and transverse direction) simultaneously or step by step in a special stretching machine at a certain temperature and a set speed, and then make it into a film after proper cooling or heat treatment or special processing (such as corona, coating, etc.).

Brief introduction of BOPP film

Commonly used BOPP films include: ordinary biaxially oriented polypropylene, heat-sealed biaxially oriented polypropylene, cigarette packaging film, biaxially oriented polypropylene pearlescent film, biaxially oriented polypropylene metallized film, extinction film, etc.

Advantage

BOPP film is a very important flexible packaging material, which is colorless, odorless, tasteless and nontoxic, and has high tensile strength, impact strength, rigidity, toughness and good transparency.

The surface energy of BOPP film is low, so corona treatment is needed before gluing or printing. After corona treatment, BOPP film has good printing adaptability and can be overprinted to get beautiful appearance, so it is often used as the surface material of composite film.