Biaxially oriented polypropylene film (BOPP film for short) is an excellent transparent flexible packaging material. Biaxially oriented polypropylene film has the advantages of high physical and mechanical strength, light weight, non-toxicity, moisture resistance, wide application range and stable performance. According to different uses, biaxially oriented polypropylene film can be divided into heat sealing film, label film, matte film, ordinary film and capacitor film.

Polypropylene is an important raw material for biaxially oriented polypropylene film. Polypropylene is a thermoplastic synthetic resin with excellent performance. It has the advantages of good dimensional stability, high heat resistance and good electrical insulation, and is in great demand in the packaging field. In 2021, my country's polypropylene (PP) output will reach 29.143 million tons, a year-on-year increase of 10.2%. Benefiting from the sufficient supply of raw materials, my country's biaxially oriented polypropylene film industry has developed rapidly, and its output has continued to increase. According to data from the National Bureau of Statistics, my country's biaxially oriented polypropylene film production will reach 4.076 million tons in 2021, a year-on-year increase of 8.7%.

The production methods of biaxially oriented polypropylene film include tubular film method and flat film method. Due to the uneven quality and low efficiency of the products produced by the tubular membrane method, they have been gradually eliminated by major enterprises. The flat film method can be subdivided into the simultaneous biaxial stretching method and the stepwise biaxial stretching method. The step-by-step biaxial stretching process is as follows: raw material→extrusion→casting→longitudinal stretching→edge trimming→corona treatment→winding→large film roll→aging→slitting→finished product. At present, the gradual biaxial stretching method is adopted by most enterprises due to its advantages of mature technology, high production efficiency, and suitability for mass production.

Biaxially oriented polypropylene film is widely used in packaging materials such as clothing, food, medicine, printing, tobacco and alcohol. At present, biaxially oriented polypropylene film has gradually replaced ordinary packaging films such as polyethylene (PE), polypropylene (PP), and polyvinyl chloride (PVC). my country is the second largest packaging country in the world, and the demand for packaging continues to grow. According to statistics from the China Packaging Federation, the cumulative revenue of enterprises above designated size in my country's packaging industry will reach 1,204.18 billion yuan in 2021, a year-on-year increase of 16.4%. With the rapid development of my country's packaging industry, biaxially oriented polypropylene film will have broad market prospects as an important packaging material.

Industry analysts from Xinsijie said that benefiting from the sufficient supply of raw materials and the high maturity of production technology, the development potential of my country's biaxially oriented polypropylene film industry is huge. The rapid development of the packaging industry will drive the further expansion of my country's biaxially oriented polypropylene film market. With the deepening of the concept of green consumption, consumers will further improve the quality requirements of packaging materials, and the energy-saving and environmentally friendly biaxially oriented polypropylene film will become the mainstream of the market.