Plastic Packaging Recyclability

What Makes Plastic Packaging Recyclable?

The number molded into a plastic package identifies its resin type—not whether the finished package will be recycled. Recyclability depends on several factors:

• Collection: Is the packaging format accepted by the relevant recycling program?
• Sorting: Can recycling equipment identify and separate the package correctly?
• Processing: Can the materials be cleaned and reprocessed without compromising recycled-material quality?
• End markets: Is there demand for the recovered material?

A bottle, tray, and flexible pouch may have different recycling pathways even when they contain the same primary resin. Labels, closures, colors, and barrier layers also influence the outcome.

Common Resins: Packaging Formats and Recyclability

PET (#1): Beverage Bottles, Food Jars, and Clear Trays

Polyethylene terephthalate (PET) is commonly used for water and beverage bottles, food jars, personal care bottles, and clear trays or clamshells. Its clarity, strength, and barrier properties support a wide range of packaging applications.

How the format affects recyclability:

• Bottles and jars: PET bottles have established recycling pathways in many markets. Clear PET generally offers more options for subsequent uses than opaque or strongly colored PET.
• Trays and clamshells: Although these may use the same resin as bottles, recycling acceptance can differ because of collection practices, package construction, and processing requirements.
• Decorated containers: Full-body sleeves, incompatible adhesives, and certain barrier materials can interfere with sorting or reduce recycled-PET quality.

PET bottles generally have well-established recycling options, particularly clear bottles with compatible labels and closures. Trays, clamshells, and more complex PET packaging require additional verification.

HDPE (#2): Milk Jugs, Detergent Bottles, and Household Containers

High-density polyethylene (HDPE) is used for milk jugs, detergent bottles, shampoo bottles, and other household or industrial containers. Its toughness and chemical resistance make it suitable for many liquid products.

How the format affects recyclability:

• Bottles and jugs: These are commonly accepted in many household recycling programs.
• Natural and colored containers: Both natural and colored HDPE can be recycled. However, natural HDPE contains no added pigments, making it easier to produce recycled products in a wider range of colors. Colored HDPE retains its pigments during recycling, which can limit the color options for new products.
• Pails and larger containers: These may require collection arrangements different from those used for household bottles.
• Dispensing packages: Pumps, trigger sprayers, liners, and other attachments may introduce materials that complicate recycling.

HDPE bottles and jugs generally have established recycling pathways. Larger containers and packages with complex dispensing systems require separate assessment.

PVC (#3): Blister Packs, Films, and Specialty Packaging

Polyvinyl chloride (PVC) is used in certain blister packs, shrink films, and specialty packaging. It provides clarity, formability, and protection for the packaged product.

How the format affects recyclability:

• Blister packs: PVC may be attached to foil, paperboard, or other materials, making separation and recovery more difficult.
• Films and sleeves: PVC is incompatible with PE film recycling and can interfere with PET recycling when used as a packaging component.
• Specialty packaging: Recovery may depend on dedicated collection and processing systems rather than household recycling programs.

PVC packaging generally has limited household recycling options. Recycling typically depends on a specialized program that accepts the specific format and material construction.

LDPE (#4): Bags, Wraps, Squeeze Bottles, and Flexible Packaging

Low-density polyethylene (LDPE) is used in bags, wraps, squeeze bottles, and flexible packaging. PE films may also incorporate linear low-density polyethylene (LLDPE) or other polyethylene grades.

How the format affects recyclability:

• Bags and wraps: Eligible PE films generally require separate collection, such as participating store drop-off programs in the United States, rather than standard curbside bins.
• Pouches: PE may be combined with PET, nylon, aluminum foil, or other barrier materials. These structures may not be compatible with PE film recycling.
• Squeeze bottles: Rigid or semi-rigid LDPE bottles follow different collection pathways from films and require separate acceptance checks.
• Used packaging: Product residue can limit acceptance, particularly where film must be clean and dry.

Clean, compatible PE bags and films can be recycled through appropriate separate collection programs. Multilayer pouches and LDPE bottles should be evaluated individually rather than assumed to follow the same route.

PP (#5): Food Tubs, Jars, Caps, and Dispensing Components

Polypropylene (PP) is commonly used for yogurt tubs, food containers, cosmetic jars, caps, and dispensing components. Its stiffness, heat resistance, and ability to form durable hinges support these applications.

How the format affects recyclability:

• Tubs and containers: Acceptance varies by location and package design.
• Caps and closures: Recovery depends partly on their size and whether they remain attached to the container. Disposal instructions should follow the relevant recycling program.
• Pumps and sprayers: A PP outer housing may contain metal springs, elastomers, and other plastics that complicate material recovery.
• Decorative jars: Double-wall construction, metallic decoration, and mixed-material inserts can introduce additional recycling challenges.

PP tubs and simple rigid containers can be recycled where suitable collection and processing systems exist. Small closures, decorative jars, and complex dispensers require closer evaluation.

PS (#6): Rigid Food Containers and Foam Packaging

Polystyrene (PS) is used in rigid food-service containers and expanded polystyrene (EPS) foam trays, protective inserts, and insulated packaging.

How the format affects recyclability:

• Rigid PS containers: Acceptance depends on local collection and processing capabilities.
• EPS foam: Its low density makes storage and transportation less efficient. Recovery often depends on specialized collection and equipment that compresses the foam.
• Food-contact packaging: Food residue can further limit recovery options.

PS packaging generally has limited household recycling access. Clean EPS protective packaging may have specialized recycling options, but availability must be confirmed locally.

Other Plastics (#7): Specialty Containers and Complex Packaging

Code #7 covers plastics outside the first six categories, including polycarbonate, PLA, and certain other resins or combinations. These materials have different properties and end-of-life requirements.

How the format affects recyclability:

• Specialty containers: Recovery depends on the specific resin and available collection system.
• Mixed-material packaging: Permanently bonded materials may be difficult to separate and reprocess.
• Compostable packaging: Compostability is a separate pathway from conventional plastic recycling and requires suitable facilities that accept the finished package.

No single recyclability conclusion applies to all #7 plastics. Each package requires a material-specific assessment, and neither the resin code nor a plant-based claim confirms an available recycling route.

Overview of U.S. and EU Requirements for Plastic Packaging Recycling

United States

U.S. requirements combine federal guidance on environmental claims with state-specific packaging laws.

• FTC Green Guides: Recyclability claims must be supported and appropriately qualified. The guidance generally calls for qualification unless suitable recycling facilities are available to at least 60% of consumers or communities where the product is sold.
• California SB 343: Restricts recycling symbols and recyclability claims for products and packaging that do not meet the state's criteria. A resin identification code alone does not establish eligibility. For a more detailed overview of the regulation and its implications for packaging claims, read our blog post on California SB 343: What It Means and How to Comply.
• State producer responsibility laws: Packaging Extended Producer Responsibility (EPR) programs introduce obligations that can include registration, reporting, and funding packaging waste management. California's SB 54 also requires covered single-use packaging and plastic food-service ware to be recyclable or compostable by 2032, alongside plastic reduction and recycling targets.

Businesses should review the requirements applicable to their sales markets, packaging categories, and role in the supply chain.

European Union

The EU's Packaging and Packaging Waste Regulation (PPWR) establishes a common framework for packaging placed on the EU market. It generally began applying on August 12, 2026, with major requirements introduced in stages.

Key areas include:

• Recyclability: Design-for-recycling requirements are scheduled from 2030, subject to the regulation's detailed implementation timetable and exemptions.
• Recycled content: Minimum recycled-content requirements for plastic packaging are phased in by packaging category.
• Packaging reduction: Requirements address unnecessary packaging weight, volume, and empty space.
• Documentation and labeling: Businesses must prepare applicable compliance documentation and meet labeling requirements as they take effect.

For packaging selection, this means evaluating the finished package and maintaining supporting material and design information—not simply choosing a resin commonly associated with recycling. To learn more about the regulation and its implementation timeline, you can read our blog post on PPWR: Key Requirements & Timeline to Know.

Building Recyclability into Packaging Decisions

As sustainability becomes a greater priority for businesses, customers, and regulators, plastic packaging decisions increasingly need to address both product performance and end-of-life management. Reviewing recyclability early—alongside product compatibility, shelf life, filling conditions, and transportation performance—helps businesses prepare for evolving market expectations and regulatory requirements.

An effective review considers the complete package, including its resin, size, shape, color, labels, adhesives, closures, and barrier materials, together with the recycling systems available in the intended market. Any design changes should be validated to maintain packaging performance, and recycling claims should be supported by appropriate evidence. Recycled content and recyclability should also be assessed separately: incorporating recycled resin does not automatically make the finished package recyclable.

Evergreen Resources can work with customers to evaluate resin options, packaging formats, and component combinations against their product requirements and sustainability goals. Addressing these factors during development helps identify opportunities to improve recycling compatibility while maintaining the protection, quality, and functionality the product requires.

FAQ

1. What do the plastic recycling numbers 1 through 7 mean?

The numbers 1 through 7 on plastic packaging are Resin Identification Codes (RICs) that identify the type of plastic used, such as PET (#1), HDPE (#2), and PP (#5). However, these numbers do not guarantee recyclability. Whether a package can be recycled depends on its design, local collection programs, sorting capabilities, and available recycling facilities.

2. Which types of plastic packaging are the most recyclable?

PET (#1) and HDPE (#2) bottles generally have well-established recycling pathways in many markets. Clear PET bottles and natural HDPE containers are particularly valuable because their recovered materials offer greater flexibility for reuse in new products. PP (#5) containers are also recyclable where suitable programs exist. Evergreen can help customers evaluate resin options based on packaging performance and recycling compatibility.

3. Are PET plastic trays and clamshells recyclable like PET bottles?

Although PET trays, clamshells, and bottles may share the same resin identification code (#1), they do not necessarily follow the same recycling process. Differences in packaging shape, labels, adhesives, and material construction can affect sorting and processing. PET bottles are commonly accepted in recycling programs, while trays and clamshells require verification based on local recycling capabilities.

4. Can LDPE plastic bags, films, and flexible pouches be recycled?

LDPE (#4) bags and compatible polyethylene films can often be recycled through designated collection programs, such as participating store drop-off locations in the United States. These materials generally should not be placed in standard curbside recycling bins. Multilayer pouches containing PET, nylon, or aluminum foil may not be compatible with PE film recycling. Packaging should also be clean and dry before collection.

5. Are plastic bottle caps, pumps, and trigger sprayers recyclable?

Plastic caps and closures, often made from PP or HDPE, may be recyclable depending on their size, material, and the recycling program's requirements. More complex dispensing systems, such as pumps and trigger sprayers, frequently contain metal springs, elastomers, and multiple plastics that complicate recycling. Evergreen can work with customers to evaluate closure and dispensing component combinations when developing packaging solutions.

6. Why are PVC, polystyrene, and other specialty plastics difficult to recycle?

PVC (#3), polystyrene (#6), and certain specialty plastics (#7) generally have more limited recycling options than commonly collected PET and HDPE bottles. PVC can interfere with other recycling streams, while expanded polystyrene (EPS) foam presents collection and transportation challenges due to its low density. Specialty and mixed-material packaging may require dedicated recycling facilities or specialized collection programs.

7. What regulations affect plastic packaging recyclability in the United States and Europe?

In the United States, the FTC Green Guides address environmental marketing claims, while California SB 343 establishes criteria for recyclability labeling. State Extended Producer Responsibility (EPR) laws also introduce packaging-related obligations. In Europe, the Packaging and Packaging Waste Regulation (PPWR) introduces requirements covering recyclability, recycled content, labeling, and packaging reduction, with major design-for-recycling requirements scheduled to begin in 2030.

8. How can businesses improve the recyclability of plastic packaging?

Improving recyclability starts with evaluating the entire package, including resin selection, color, labels, adhesives, closures, and barrier materials. Businesses should also consider local recycling infrastructure and verify that design changes maintain product protection and functionality. Using recycled plastic does not automatically make a package recyclable. Evergreen Resources works with customers to assess packaging materials and designs that support sustainability goals while meeting product and performance requirements.