Skip to content

The Key Differences Between BOPP and Polyester Film

When it comes to packaging solutions, choosing the right film material is crucial for ensuring product quality, durability, and visual appeal. Among the various options available, two popular choices are Biaxially Oriented Polypropylene (BOPP) and Polyester (PET) films. Both materials offer excellent packaging properties, but understanding their differences can help you make an informed decision for your specific needs. This article will explore the key differences between BOPP and Polyester films, helping you choose the perfect flexible packaging solution for your products.


Material Composition:

BOPP Film:

BOPP film is a thermoplastic polymer made from polypropylene resin. It is produced by stretching the film in both machine and transverse directions, resulting in improved strength, clarity, and resistance to moisture and chemicals. BOPP films are known for their excellent printability and compatibility with various coating and laminating processes.

Polyester Film:

On the other hand, polyester (PET) film is a strong and durable thermoplastic polymer made from polyethylene terephthalate resin. PET films offer exceptional mechanical properties, including high tensile strength, dimensional stability, and excellent barrier properties. PET films are widely used in applications that require heat resistance, chemical resistance, and excellent optical clarity.


Physical Properties:

BOPP Film:

BOPP films have a higher stiffness compared to Polyester films, making them an excellent choice for applications that require rigidity and structural integrity. They offer good dimensional stability, enabling them to retain their shape even in varying environmental conditions. BOPP films are available in a range of thicknesses, providing options for different packaging requirements.

Polyester Film:

Polyester films exhibit exceptional mechanical strength and toughness, making them suitable for demanding applications. They offer excellent resistance to tear, impact, and puncture, ensuring the integrity of the packaged product. Additionally, PET films have high thermal stability, allowing them to withstand high-temperature environments during processing or storage.


Optical Properties:

BOPP Film:

BOPP films provide good clarity and transparency, enhancing the visual appeal of the packaged product. Their glossy surface allows for vibrant and high-quality printing, making them ideal for applications that require superior graphics and branding. BOPP films can also be treated with coatings to achieve specific functionalities such as heat sealability or moisture resistance.

Polyester Film:

Polyester films offer exceptional optical properties, including excellent clarity, gloss, and light transmission. These features make PET films ideal for applications that require a high degree of transparency, such as window packaging or display purposes. PET films can also be metallized or coated to achieve various effects like a metallic appearance or enhanced barrier properties.



BOPP Film:

BOPP films find wide applications in various industries such as food and beverages, pharmaceuticals, personal care, and more. They are commonly used for packaging snacks, confectioneries, tobacco products, labels, and adhesive tapes. The excellent printability and moisture resistance of BOPP films make them a preferred choice for flexible packaging solutions.

Polyester Film:

Polyester films are extensively used in the packaging of electronics, medical devices, automotive components, and other high-end products. Their exceptional mechanical properties and resistance to chemicals and solvents make them suitable for applications where product protection and durability are crucial. PET films are also commonly used for industrial applications like insulation, printing, and lamination.



Choosing the right film material for your packaging needs is essential for product integrity and appeal. BOPP and Polyester films offer distinct advantages depending on the specific requirements of your application. BOPP films provide excellent printability, moisture resistance, and structural integrity, while Polyester films offer exceptional mechanical strength, optical clarity, and barrier properties.



Contact Us

At PennPac, we offer a wide range of BOPP and Polyester films that cater to diverse flexible packaging needs. Whether you require high-quality graphics, excellent transparency, or superior product protection, our films are designed to meet your expectations.

For more information on our BOPP and Polyester films or to discuss your specific packaging requirements, please feel free to contact us! We look forward to assisting you with your packaging needs and providing you with the highest-quality film solutions.