Plastic Code #1: What PET Means for Packaging

If you evaluate packaging materials, you will often encounter products labeled with plastic recycling code #1. This code refers to PET, or polyethylene terephthalate, one of the most widely used plastics in consumer packaging.

PET is especially common in beverage bottles and food containers because it is lightweight, durable, and highly recyclable. Understanding how PET works in packaging and recycling systems helps businesses choose materials that align with both regulatory requirements and sustainability goals.

What Is Plastic Code #1?

Plastic recycling code #1 refers to polyethylene terephthalate (PET), a clear and lightweight thermoplastic used widely in packaging.

PET is known for its strength, transparency, and ability to protect contents from moisture and oxygen. These properties make it one of the most practical plastics for packaging beverages, personal care products, and food items.

Why PET Is Widely Used

Manufacturers use PET extensively because it offers several advantages:

• High clarity and gloss
• Strong barrier properties for liquids and beverages
• Lightweight compared with glass
• Durable during transport and handling
• Compatible with large-scale recycling systems

Because of these properties, PET has become the dominant material for plastic beverage bottles and many consumer packaging formats.

Where PET (#1) Is Commonly Used

Plastic code #1 appears across a wide range of packaging and consumer products.

Typical Applications

Common uses include:

• Water and beverage bottles
• Soft drink and juice containers
• Food packaging trays
• Cosmetic and personal care bottles
• Household cleaner containers

Many brands select PET because it balances performance, cost efficiency, and recyclability better than most alternative materials.

Why PET Is One of the Most Recyclable Plastics

Among all plastic types, PET has one of the most established recycling systems worldwide. In many regions, PET bottles are collected, sorted, washed, and processed into recycled resin that can be used again in new packaging.

Established Recycling Infrastructure

PET recycling works well because:

• Bottles are easy for sorting systems to identify
• Large volumes exist in the waste stream
• Mechanical recycling technology is well developed
• Demand for recycled PET (rPET) is increasing

Recycled PET is commonly used in textiles, packaging trays, and increasingly in new bottles.

rPET and Recycled PET Bottles

Recycled PET, known as rPET, is produced by processing collected PET bottles into clean recycled resin.

Why Brands Are Transitioning to rPET

Many consumer brands are adopting rPET packaging because it can:

• Reduce reliance on virgin plastic
• Lower packaging carbon footprints
• Support circular packaging systems
• Help meet recycled content targets under regulations such as California’s SB 54

As demand for recycled packaging increases, rPET bottles are becoming a standard choice in beverage, beauty, and wellness products.

Where to Recycle Plastic #1 in California

California has one of the most developed PET recycling systems in the United States.

Most PET bottles can be recycled through curbside recycling programs, bottle redemption centers, and the California Redemption Value (CRV) deposit system.

Under the CRV program, consumers pay a small deposit when purchasing many beverage containers and receive that deposit back when returning the bottles to a redemption center.

Deposit Programs and Collection Systems

Several organizations and recycling centers across California collect PET bottles and may pay for them through deposit refunds or bulk recycling programs. Because PET bottles have strong recycling demand, they are among the most valuable plastics in the recycling stream.

Businesses exploring recycled packaging can learn more about PET recycling and recycled-content bottle supply in California in our related guide.

FAQ: Plastic Code #1

Is plastic #1 recyclable?

Yes. PET (#1) is widely accepted by recycling programs and has one of the most established recycling systems of any plastic.

What is rPET?

rPET stands for recycled polyethylene terephthalate. It is produced by recycling used PET bottles and processing them into new resin that can be used again in packaging.

Is PET safe for packaging?

PET is widely used in food, beverage, and cosmetic packaging because it is durable, lightweight, and approved for many consumer packaging applications.

Why is PET preferred for bottles?

PET provides strong clarity, durability, and barrier properties while remaining lightweight and highly recyclable. This combination makes it ideal for beverage and liquid packaging.

Key Takeaway

Plastic recycling code #1 represents PET, one of the most widely used and recyclable plastics in the packaging industry. Its strong performance, established recycling infrastructure, and compatibility with recycled-content packaging make it a central material in today’s move toward more circular plastic packaging systems.