Plastic is one of the most widely used materials in modern life, but its environmental impact depends heavily on how it is managed after use.
Not all plastics are the same—some can be recycled efficiently while others pose significant recycling challenges. By understanding the seven major types of plastic and their recyclability, we can make smarter choices, help support a circular economy, and build a more sustainable future.
The Seven Types of Plastic
Plastics are classified by resin identification codes, numbered one through seven. Each type has unique properties and uses.
1. Polyethylene Terephthalate (PET)
PET is one of the most commonly used plastics in water bottles, soda bottles, and food packaging. It is lightweight, strong, and transparent. PET also doesn’t leak toxins, making it ideal for consumable products.
2. High-Density Polyethylene (HDPE)
HDPE is durable and resistant to chemicals. It is typically used for milk jugs, shampoo bottles, detergent bottles, pipes, and outdoor furniture. Similar to PET, HDPE does not leach chemicals, making it ideal for everyday products.
3. Polyvinyl Chloride (PVC)
PVC is strong and versatile. It is used in fittings, pipes, window frames, flooring, and other construction materials. PVC is also utilized in medical equipment and high-tech applications, automotive interiors, footwear, and clothing.
4. Low-Density Polyethylene (LDPE)
LDPE is fairly inexpensive and easy to produce. It is lightweight, flexible, and moisture-resistant, making it suitable for grocery bags, cling wrap, and squeezable bottles.
5. Polypropylene (PP)
PP is tough, heat-resistant, and one of the most versatile plastic types. It is often used in straws, bottle caps, yogurt containers, food storage containers, and car parts.
6. Polystyrene (PS)
PS packaging is available in solid forms and expanded forms. Solid polystyrene is often combined with additives, other plastics, and colorants to make cup lids, toys, electronics, and plastic automobile parts. Expanded polystyrene (EPS)—often recognized as Styrofoam—is often used in cups and food containers, food trays, packing peanuts, and foam boards.
7. Other Plastics
Resin Code No. 7 includes all other plastics, like multi-layer packaging, bioplastics, and polycarbonate. These plastics are often blends of different materials, and many end up in landfills.
Which Plastics Can Be Recycled?
Not only do plastics have different uses, but they also have varying levels of recyclability. Among the seven types of plastic, the following are the most widely recycled:
- #3 PVC: PVC is difficult to recycle because it contains additives and chlorine. Improper disposal of this plastic type can release harmful chemicals, but recycling options for PVC are limited.
- #4 LDPE: LDPE is technically recyclable, but it can tangle recycling machinery and disrupt the recycling process. It is not often recycled through curbside programs.
- #6 PS: PS is lightweight but bulky, which makes collection and recycling inefficient. It can also break into small particles that pollute waterways and harm wildlife.
- #7 Others: Plastics under Category No. 7 are difficult to recycle because of their blend of various materials. Recycling acceptance of No. 7 plastics also varies widely.
Why Recycling Plastic Is Important
Recycling plastic is about more than just reducing waste. It has far-reaching environmental and economic benefits, such as:
- Reducing landfill waste: Plastics can take 100 to over 1,000 years to decompose, occupying valuable space for generations. Recycling can help reduce the strain on landfills and ecosystems.
- Conserving energy and resources: Creating new plastic requires significant energy and natural resources. By using existing materials, recycling lowers demand for virgin resources and overall energy consumption.
- Lowering carbon footprint: Plastic production generates greenhouse gas emissions that contribute to climate change. Recycling reduces these emissions by minimizing energy-intensive production processes.
- Supporting circular economies: Recycled plastics can be turned into new products, extending their life cycle and reducing waste. This process also creates jobs, strengthens local economies, and promotes sustainable growth.
Understanding the types of recycled plastic and the impact of recycling is important. Another key step is choosing products that actively support this cycle by giving plastics a second life.
Support Sustainability With Recycled Plastic Products
Advancing sustainability requires collective action. At Greenprint, we offer sustainable food packaging solutions to help close the loop. Explore our agave-based product line made of verified and traceable recycled plastic and FSC-certified plant fibers. We also have a recycled product line of straws and lids from type 5 recycled plastic (PP). By partnering with us, you can support sustainable practices and help reduce plastic waste.
Contact us today to learn more!