HomePET Knowledge BaseUnderstanding Pet Grades: Film, Bottle, and Textile

Understanding Pet Grades: Film, Bottle, and Textile

Understanding Pet Grades: Film, Bottle, and Textile

When it comes to the vast world of plastics, PET (polyethylene terephthalate) stands out as a popular and versatile material. From the fizzy soda bottles we drink from to the comfy clothes we wear, PET is almost omnipresent in our lives. But did you know that not all PET is the same? Depending on its end-use, PET is manufactured in different grades, mainly – film grade, bottle grade, and textile grade. In this blog, we’ll delve into the unique characteristics of each type and understand their distinct applications.


1. Film Grade PET

Film grade PET is specifically designed for its thin, flexible properties. This version of PET has high clarity, making it a top choice for packaging and protective purposes.



  • Food Packaging: Thin sheets or layers that hold your candies, cookies, or even meats are often made of film grade PET. It provides a clear view of the product while keeping it fresh.

  • Protective Films: Think about the screen protectors on your mobile phones or the thin film on newly purchased electronics. These are usually made of this type of PET.

Key Characteristics:


  • High transparency.
  • Flexibility and thinness.
  • Resistance to moisture, ensuring contents remain dry.

2. Bottle Grade PET

When you're sipping your favorite beverage, you're most likely holding bottle grade PET. It's been designed with specific properties to ensure safety, durability, and recyclability.


  • Beverage Bottles: From carbonated soft drinks to mineral water, bottle grade PET is the material of choice for most drink manufacturers.
  • Food Jars: Products like peanut butter, jams, and sauces are often stored in containers made from this grade.

Key Characteristics:

  • Exceptional strength, ensuring it can withstand the pressure of carbonated drinks.

  • Clarity, to showcase the beverage inside.

  • Easily recyclable, making it a preferred choice for brands committed to sustainability.

3. Textile Grade PET

If you've ever owned a polyester shirt or dress, you’ve worn textile grade PET! This version of PET is processed into fibers that have applications in the world of fashion and home decor.


  • Clothing: Polyester is a derivative of textile grade PET, and it's used in a vast range of clothing items, from sportswear to formal dresses.
  • Home Furnishings: Think of those soft blankets, carpets, or curtains in your house. Many of them might be made from textile grade PET.

Key Characteristics:

  • High tensile strength, ensuring durability.
  • Ability to retain color, making it a favorite for vibrant clothing.
  • Resistance to wrinkles, ensuring garments look neat with minimal ironing.

Bottle Grade PET Chip WK-801

PET Chip WK-601

Super Bright PET Chip WK-631


The PET Connection

While the three grades of PET serve different purposes, their core connection is the PET polymer. Understanding the grades isn’t just beneficial for manufacturers or businesses. As consumers, when we know the materials used in our everyday products, we can make informed decisions, be it for health, aesthetics, or the environment.

In conclusion, PET is a versatile material that spans various industries and applications. Whether it's protecting our food, quenching our thirst, or draping us in style, the different grades of PET have us covered. Next time you come across a PET product, you'll now know a bit more about its origin and purpose!

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