BOPP film

Abstract

The invention relates to the technical field of BOPP film technology, in particular to a BOPP film, which can have good heat sealability, improve the printing effect of the thin film, enhance the anti-counterfeiting property of the thin film, enable the thin film not to be easily counterfeited and reduce the use limitation. The BOPP film comprises a base layer film, two groups of tensile layer films, two groups of heat sealing glue layers, two groups of corona layer films, two groups of ink layer films and an anti-counterfeiting coating, one ends of the two groups of tensile layer films are fixedly connected with the top end and the bottom end of the base layer film respectively, and one ends of the two groups of heat sealing glue layers are fixedly connected with the other ends of the two groups of tensile layer films respectively; one ends of the two sets of ink layer films are fixedly connected with the other ends of the two sets of corona layer films respectively, one ends of the two sets of anti-fake grooves are fixedly connected with the other ends of the two sets of ink layer films respectively, the anti-fake grooves are formed in the ink layer films above the base layer film, and the anti-fake coatings are fixedly installed in the anti-fake grooves. The surface of the anti-fake coating is parallel to the end face of the ink layer film.

Description

technical field [0001] The invention relates to the technical field of BOPP film technology, in particular to a BOPP film. Background technique [0002] BOPP film is also known as biaxially oriented polypropylene film. It is made of a sheet or thick film by passing the melt of high molecular polypropylene through a long and narrow machine head, and then passes through a special stretching machine at a certain temperature and a set speed. Next, the film is stretched in the two perpendicular directions of the horizontal and vertical directions simultaneously or step by step, and is made through the corresponding process. [0003] The surface energy of BOPP film is low, and corona treatment is required before gluing or printing. After corona treatment, BOPP film has good printing adaptability, and can be printed in color to obtain exquisite appearance, so it is often used as the surface layer of composite film However, the current BOPP film has a single function, does not have...

AI Technical Summary

Problems solved by technology

[0003] The surface energy of BOPP film is low, and corona treatment is required before gluing or printing. After corona treatment, BOPP film has good printing adaptability, and can be printed in color to obtain exquisite appearance, so it is often used as the surface layer of composite film However, the current BOPP film has a single function, does not have heat sealability, and the printing effect of the film is poor, and the general anti-counterfeiting mark is printed on the surface of the film, which is easy to be imitated and has poor anti-counterfeiting performance, resulting in high limitations in use.

Images