Do you know what is BOPP film?The production of BOPP film is the polymer polypropylene melt first through the narrow head made of sheet or thick film, and then in a special stretching machine, a specific temperature and set the speed, simultaneously or step-by-step in the vertical two directions of the stretching, and after appropriate cooling or heat treatment or special processing of the film made. Next to give you an introduction to the advantages and disadvantages of BOPP film.
BOPP Film Advantages
(1) BOPP film is a very important flexible packaging materials, BOPP film colorless, odorless, tasteless, non-toxic, and has a high tensile strength, impact strength, rigidity, toughness and good transparency.
(2) BOPP film surface energy is low, glue or printing before the need for corona treatment. After corona treatment, BOPP film has a good printing adaptability, can be printed in color and get a beautiful appearance, and therefore commonly used as a composite film surface material.
BOPP Film Shortcomings
(1) BOPP film also has shortcomings, such as easy to accumulate static electricity, no heat sealability. In the high-speed production line, BOPP film is prone to static electricity, need to install static electricity remover. In order to obtain heat-sealable BOPP film, can be coated with heat-sealable resin adhesive after corona treatment on the surface of the BOPP film, such as PVDC latex, EVA latex, etc., can also be coated with solvent adhesive, but also extrusion coating or co-extrusion composite method of production of heat-sealable BOPP film.
(2)The film is widely used in packaging of bread, clothes, shoes and socks, etc., as well as the cover packaging of cigarettes and books.The initiating tear strength of BOPP film is improved after stretching, but the secondary tear strength is very low.Therefore, BOPP film should not be left with any cuts on both end surfaces or the BOPP film will be easy to be torn off when printing and laminating.The BOPP coated with sticker can be used to produce sealing tapes, which is the BOPP dosage of the larger market.
The above is a summary of the advantages and disadvantages of BOPP film, I hope to help! Want to know more about BOPP film information, you can pay more attention to us!
#BOPP Film #Biaxially Oriented Polypropylene Films