Polyethylene Terephthalate (PET) has long been the standard for clear beverage bottles. The harder question is whether a high-volume brand can replace virgin bottle resin with 100% recycled PET (rPET) without losing food safety, clarity, strength, or line efficiency. Coca-Cola Canada’s nationwide 500 mL sparkling-bottle transition provides a useful, publicly documented answer: yes, when the material claim is tightly scoped and the quality system is built for recycled feedstock.
This case study examines the public rollout and translates it into practical lessons for bottle manufacturers. CBRHK is not identified as a supplier to the project, and company projections are labeled as projections rather than independently verified outcomes.
Change the Resin, Not the Consumer Experience
In October 2023, Coca-Cola Canada announced that all 500 mL sparkling beverage bottles in its Canadian portfolio would move to bottle bodies made from 100% recycled plastic by early 2024. The change covered multiple brands and four production locations: Brampton, Calgary, Lachine, and Richmond. It followed an earlier nationwide rollout of 100% rPET DASANI bottles.
The phrase “100% recycled” needs a precise boundary. In the company’s announcement, it refers to the PET bottle body and explicitly excludes the cap and label. Under normal circumstances, the conversion was designed to eliminate virgin PET from those 500 mL bottle bodies. That distinction is essential for a claim that buyers, regulators, and consumers can understand.
Results at a glance
| Measure | Publicly documented result |
| Commercial scope | All 500 mL sparkling beverage bottle bodies sold by Coca-Cola in Canada |
| Recycled content | 100% rPET in the bottle body under normal circumstances |
| Claim boundary | Cap and label excluded |
| Production footprint | Four Canadian bottling facilities |
| Virgin-plastic impact | 7.6 million lb of new plastic projected to be avoided in 2024 |
| Climate impact | Nearly 7,000 metric tons of CO2 emissions projected to be reduced annually |
The launch therefore qualifies as a commercial scale-up success, not merely a lab trial. However, the plastic and climate figures above came from the company’s launch projection. They should not be presented as audited, project-specific actuals.
Why Recycled PET Was a Practical Bottle-to-Bottle Choice
PET combines clarity, low weight, strength, and useful gas-barrier performance. Those characteristics make bottle-grade PET resin suitable for water, carbonated beverages, juices, and food containers. They also make clear PET bottles valuable recycling feedstock when collection and sorting systems keep contamination low.
The bottle-to-bottle route is straightforward in concept. Used PET containers are collected, sorted, washed, and ground into flakes. Approved recycling processes then decontaminate the material and convert it into food-grade flake or pellets for new preforms and bottles. In practice, every link matters:
- Collection must deliver enough clear PET feedstock.
- Sorting must remove PVC, colored PET, metals, labels, and other contaminants.
- Washing and decontamination must achieve food-contact purity.
- Reprocessing must restore the molecular weight and intrinsic viscosity needed for bottle performance.
- Preform and blow-molding conditions must be adjusted for the qualified rPET grade.
This is why recycled content alone is not a complete specification. A buyer also needs food-contact evidence, batch traceability, intrinsic viscosity, moisture, color, acetaldehyde, and contamination controls. CBRHK’s guide to food-grade PET compliance explains how those documents and tests fit together.
How to Translate the Rollout Into a Manufacturing Plan
Coca-Cola’s public materials identify the portfolio, timing, facilities, claim boundary, and expected impact, but they do not disclose the resin recipe or validation protocol. The following sequence is therefore an industry-informed implementation model, not a claim about confidential project details.
1. Lock the claim before selecting the material
Define whether “100% recycled” applies to the bottle body, the complete package, or the average across a portfolio. List every exclusion. This prevents marketing language from getting ahead of procurement and engineering reality.
2. Qualify the recycling process and resin supplier
For food packaging, a recycled-content certificate does not by itself establish food-contact suitability. The U.S. Food and Drug Administration evaluates recycled-plastic uses case by case and asks for source controls, a complete recycling-process description, contaminant-removal evidence, and intended conditions of use. Supplier documentation should connect the approved process to the delivered resin and its lot records.
3. Establish a bottle-grade acceptance window
Set limits for intrinsic viscosity, moisture, color, black specks, bulk density, acetaldehyde, and relevant migration results. Use tighter internal alert limits inside the customer specification so the plant can react before a batch reaches a rejection threshold.
4. Validate preforms and bottles on the actual line
Run the intended rPET through drying, injection molding, and stretch blow molding at commercial speeds. Measure preform haze and color, wall distribution, top load, burst pressure, dimensional stability, closure fit, and sensory performance. A resin that passes a certificate review can still need process-window changes on a specific line.
5. Scale by controlled replication
A multi-site conversion is more reliable when one validated material specification, test plan, change-control process, and defect vocabulary travel with the resin. Each plant still needs local trials because dryers, molds, utilities, ambient humidity, and line speeds differ.
6. Protect continuity of supply
Food-grade clear rPET is a constrained feedstock. A serious launch plan includes approved alternate lots or suppliers, inventory triggers, and a documented exception process for unusual shortages. If the claim allows no virgin PET under normal circumstances, any emergency deviation also needs traceable approval and accurate market communication.
Production Controls That Make 100% rPET Work
Recycled Polyethylene Terephthalate can perform well in beverage bottles, but it is less forgiving of weak incoming inspection. Four controls deserve special attention.
Moisture and drying. PET is hygroscopic. Excess moisture during melt processing can cause hydrolytic degradation, reduce intrinsic viscosity, and weaken the bottle. Verify incoming moisture and log dryer dew point, temperature, residence time, and material flow.
Color and visible contamination. Repeated heat histories and mixed feedstock can shift the resin toward yellow or gray. Track L*, a*, and b* values, haze, black specks, and fluorescence against an approved bottle standard rather than judging pellets alone.
Molecular weight and mechanical performance. Intrinsic viscosity influences preform molding, stretch behavior, top load, and pressure resistance. Solid-state polymerization may be used to rebuild molecular weight for demanding bottle applications. Link resin IV to finished-bottle results instead of relying on a generic target.
Food-contact and sensory performance. Challenge-test evidence, migration assessment, and traceability protect safety; acetaldehyde and other sensory controls protect taste. The FDA’s recycled-plastics guidance emphasizes source control, decontamination capability, and intended conditions of use. These checks belong in the launch gate, not after scale-up.
A robust receiving plan compares every Certificate of Analysis with an agreed specification, samples resin by lot, and maintains links from feedstock through preform and finished bottle. That structure makes a deviation containable and an audit defensible.
What the Success Shows – and What It Does Not
The Canadian rollout shows that a 100% rPET bottle-body specification can move across a national, multi-brand, multi-plant production network. It also shows the value of a narrow claim: the company consistently excluded caps and labels, reducing the risk that “100%” would be read as the entire package.
The published business case was material. Coca-Cola projected that the change would avoid 7.6 million lb of new plastic in 2024 and reduce nearly 7,000 metric tons of CO2 emissions annually. Those are useful planning figures, but a manufacturer should calculate its own baseline, boundary, resin yield, transport, energy mix, and scrap rate before making a comparable claim.
The broader scale is also visible. Coca-Cola’s 2024 Environmental Update reported that 64 markets offered at least one brand in 100% rPET packaging, up from 53 the prior year. The report uses the same definition: 100% rPET refers to the bottle material, not the cap and label. This supports the conclusion that the format is repeatable across markets, while not proving that every line or package uses identical technology.
For EU-bound packaging, the regulatory direction further strengthens the case for early qualification. The EU Packaging and Packaging Waste Regulation entered into force on February 11, 2025 and generally applies from August 12, 2026. The European Commission describes its goals as making packaging economically recyclable, safely increasing recycled plastic use, and reducing virgin-material demand. A 100% rPET project can move a brand ahead of minimum recycled-content requirements, but it still must meet food-contact, recyclability, labeling, and substantiation rules.
A Replication Checklist for Bottle Manufacturers
CBRHK supplies virgin and recycled PET options for packaging applications and provides batch documentation and technical support. Manufacturers planning a new bottle program can contact the CBRHK team to discuss grade selection, qualification samples, and supply requirements.
FAQs
Is 100% recycled PET safe for food and beverage bottles?
It can be. Safety depends on the recycling process, source controls, decontamination performance, intended use, and regulatory evidence – not on the recycled-content percentage alone. For U.S. food contact, review the applicable FDA pathway and documentation for the specific process and use. EU projects require the relevant EU food-contact and recycled-plastic compliance evidence.
What does “recycled PET bottle” mean?
It means some or all of the PET in the bottle body came from recycled material rather than virgin petrochemical feedstock. The percentage should state the basis of the claim. A 100% rPET bottle claim often applies to the bottle body and excludes the cap and label.
What does a “100% recycled bottle” claim include?
Do not assume it includes every packaging component. In the Coca-Cola Canada case, 100% referred to the recycled plastic in the bottle body, while the cap and label were excluded. Good claims state those exclusions next to the percentage.
Can a PET bottle be recycled again?
Yes, when it is collected and accepted by the local recycling system. Clear, compatible bottle design improves the chance that PET returns to high-value applications such as new bottles. Actual circularity still depends on collection, sorting, reclaimer capacity, food-grade allocation, and demand for the recycled resin.