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Is Bopp a plastic?

by:Gangyuan      2023-07-14

Is BOPP a Plastic?


Biaxially-oriented polypropylene (BOPP) is a widely used material in various industries. Its versatility, affordability, and unique properties make it a popular choice for packaging, labeling, and other applications. Many people wonder whether BOPP is considered a plastic and the various aspects associated with its use. In this article, we will delve into the properties, production process, advantages, and applications of BOPP, shedding light on the question of whether BOPP is indeed a plastic.

1. Understanding BOPP: A Plastic Film

BOPP is a type of plastic film made from polypropylene, a thermoplastic polymer. It is produced through a process called biaxial orientation, which involves stretching the material in two perpendicular directions. This stretching enhances the film's clarity, tensile strength, and other desirable properties.

2. Distinctive Properties of BOPP

BOPP possesses several unique properties that make it an ideal choice for various applications. Firstly, it exhibits excellent clarity, allowing consumers to see the contents of a package without open it. Additionally, BOPP has high tensile strength, which means it can withstand considerable pressure and stretching without tearing or breaking. Moreover, BOPP is moisture-resistant, making it suitable for packaging products that might be exposed to humidity or moisture during transportation or storage.

3. The Production Process of BOPP

The production of BOPP involves several steps. Initially, polypropylene resin pellets are melted and extruded into a flat sheet, forming a primary film. Next, this primary film passes through a series of rollers, where it is stretched mechanically, both in the machine (longitudinal) and transverse (lateral) directions. The stretching process aligns the polymer molecules, thereby increasing the film's strength and clarity. Finally, the biaxially-oriented polypropylene film is set with cooling rollers, rendering it rigid and ready for packaging or other applications.

4. Advantages of BOPP

BOPP offers numerous advantages that make it an attractive choice over alternative materials. Firstly, its high transparency allows manufacturers to showcase their products effectively, attracting customers through visual appeal. Additionally, BOPP films have excellent printability, making them suitable for high-quality labels and packaging designs. Moreover, BOPP is lightweight, contributing to cost-effective transportation and reduced carbon emissions. The material's heat-sealability enables easy packaging and sealing operations without the need for adhesives or other fastening methods.

5. Applications of BOPP

BOPP films find applications in various industries, owing to their versatile nature. One of the most common uses is in flexible packaging, where BOPP films are employed as wrappers or laminate layers for food items, pharmaceutical products, and consumer goods. BOPP's moisture resistance and excellent barrier properties make it ideal for protecting products from external factors. Furthermore, BOPP films are widely used in the labeling industry due to their printability and durability. From product labels to promotional stickers, BOPP labels offer superior quality and attractiveness.


In conclusion, BOPP is indeed considered a plastic film, specifically polypropylene-based. Its unique properties, such as clarity, high tensile strength, and moisture resistance, make it an integral part of the packaging and labeling industries. The production process of BOPP involves the biaxial orientation of the material, resulting in enhanced attributes. The advantages of BOPP, including its transparency, printability, lightweight nature, and heat-sealability, contribute to its popularity in various sectors. From flexible packaging to labeling, BOPP films continue to be a versatile and reliable choice for businesses worldwide.

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