What Is The Difference Between PET & PETE Plastic Bottles?

It’s a small detail on the bottom of a bottle, but it can raise a big question: why do some containers say PET while others say PETE? Both acronyms refer to polyethylene terephthalate, a lightweight, durable plastic widely used in packaging, especially in bottles for food and beverages. PETE and PET are used interchangeably across labeling systems; they are not different materials. Understanding that both of these abbreviations are for the same type of plastic helps consumers recycle with confidence and reduces confusion at sorting facilities.

Three clear PET plastic containers displayed on a bed of small, colorful plastic pellets, primarily blue with some green.Three clear PET plastic containers displayed on a bed of small, colorful plastic pellets, primarily blue with some green.

What Is PET or PETE Plastic?

PET plastic, also labeled as PETE, is a type of thermoplastic polymer resin known as polyethylene terephthalate. This plastic is the most common variation of thermoplastic polymer resin and is well known for being lightweight and impact-resistant. It’s also highly recyclable, making it a valuable resource in the circular economy.


PET or PETE: Recycling Number 1 Plastic

PET or PETE plastic can be identified through the recycling number 1, often found on the bottom of containers. PET is highly recyclable and widely accepted in curbside recycling programs. Recycling PET containers helps reduce landfill waste, conserve natural resources, and lower greenhouse gas emissions associated with producing new plastic.

Recycling Symbol for Number 1 Plastic

The recycling symbol for PET or PETE is part of the Resin Identification Code system, which identifies plastic types using the numbers 1-7 inside a triangle of chasing arrows. Number 1 corresponds to polyethylene terephthalate. This symbol helps both consumers and recycling plants sort and categorize plastics correctly based on their type. Understanding these symbols helps consumers make informed choices and support more efficient recycling systems.

Embossed PET recycling symbols on a plastic surface, including a triangle with the number 1.Embossed PET recycling symbols on a plastic surface, including a triangle with the number 1.
Embossed PET recycling symbols on a plastic surface, including a triangle with the number 1.Embossed PET recycling symbols on a plastic surface, including a triangle with the number 1.

PET vs PETE: Key Performance Traits

PET and PETE are acronyms for Number 1 plastic, so their composition and performance are identical. Number 1 plastic’s popularity in packaging stems from a combination of characteristics, including thermal stability, chemical resistance, barrier properties, stress crack resistance, and recyclability. These traits make PET suitable for a wide range of applications, from carbonated beverage bottles to cosmetic containers.

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Temperature Range

PET plastic has a general temperature range of approximately -40℉ to 140℉ (-40℃ to 60℃). This number may have a higher range depending on the specific application, such as hot-fill processes or industrial packaging.

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Chemical Resistance

As a generally chemical-resistant plastic, PET bottles are often used for household substances such as diluted acids, alcohols, oils, and greases. However, they are not suitable for more aggressive chemicals such as acids, strong alkalis, or ketones. These substances can compromise the plastic’s integrity over time.

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Gas Barrier

A strong barrier against gases like oxygen and carbon dioxide is important for preserving freshness and shelf life. This makes PET, or PETE, plastic ideal for packaging soft drinks, juices, and other products that require airtight containment.

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Stress Crack Resistance

PET plastic has moderate resistance to stress cracking, which can be influenced by factors such as chemical exposure, carbonation pressure, and manufacturing conditions.

Blue arrow.Blue arrow.

Recyclability

As a widely recyclable plastic, PET can be used to create new bottles as well as other products such as fibers, carpeting, and garments. The recycling process involves collecting, sorting, cleaning, and grinding PET bottles into flakes that are later melted and reformed into new products. Its recyclability supports closed-loop systems and reduces reliance on virgin plastic.


Temperature Range

PET plastic has a general temperature range of approximately -40℉ to 140℉ (-40℃ to 60℃). This number may have a higher range depending on the specific application, such as hot-fill processes or industrial packaging.


Chemical Resistance

As a generally chemical-resistant plastic, PET bottles are often used for household substances such as diluted acids, alcohols, oils, and greases. However, they are not suitable for more aggressive chemicals such as acids, strong alkalis, or ketones. These substances can compromise the plastic’s integrity over time.


Gas Barrier

A strong barrier against gases like oxygen and carbon dioxide is important for preserving freshness and shelf life. This makes PET, or PETE, plastic ideal for packaging soft drinks, juices, and other products that require airtight containment.


Stress Crack Resistance

PET plastic has moderate resistance to stress cracking, which can be influenced by factors such as chemical exposure, carbonation pressure, and manufacturing conditions.


Recyclability

As a widely recyclable plastic, PET can be used to create new bottles as well as other products such as fibers, carpeting, and garments. The recycling process involves collecting, sorting, cleaning, and grinding PET bottles into flakes that are later melted and reformed into new products. Its recyclability supports closed-loop systems and reduces reliance on virgin plastic.


Shop PETE & PET Plastic Bottles

At The Cary Company, we recognize the importance of quality, dependable plastic bottles that leave you feeling confident in your purchase. Apart from clearing up confusion about PETE vs PET and answering questions such as, “What is PETE plastic?”, we take pride in our bulk distribution and excellent customer service.

Have any questions? Interested in finding a PET plastic container? Contact one of our product specialists available to answer any questions and recommend products for you. Give us a call at 630-629-6600 or email us at sales@thecarycompany.com.