The Recyclability Challenge in Blister Packaging: Where the Industry Stands

Blister packaging is a small contributor to total packaging waste by weight, but it attracts a disproportionate share of attention because it is visible and difficult to recycle. Regulators, brand owners, and patients all have an interest in the outcome.

Why Blisters Are Hard to Recycle

A conventional blister pack is a multi-material assembly: a thermoformed polymer cavity, an aluminum lidding foil, and a heat seal lacquer bonding the two. Separating those layers is technically difficult and not economical at current material values.

Add to that the regulatory constraint that primary packaging must be qualified for the product it contains, and the practical result is that most used blister packs are not recycled.

The Options Being Pursued

Four approaches are in active use or development:

1. Mono-material polymer blisters. Replacing the aluminum lidding with a polymer lidding creates a single-material pack that can be processed through some recovery streams. The trade-off is higher moisture transmission, which limits application to products with adequate stability margin.

2. PVC-free structures. PVC-free cold-form aluminum removes PVC from the forming web while retaining the aluminum barrier. This addresses PVC-specific concerns — particularly around chlorinated waste streams — though the pack remains multi-material.

3. Recovery and take-back programs. Some markets operate collection schemes for pharmaceutical packaging, where used blisters are gathered at pharmacies and processed separately. Effectiveness varies considerably by country.

4. Design for reduced material. Thinner films and smaller cavity areas reduce material use per dose, which reduces waste volume even when the pack is not recyclable.

The Barrier Trade-Off

Every recyclability improvement has a performance cost. Mono-material packs generally have higher WVTR than their multi-material equivalents. PVC-free structures may cost more per unit. Recovery programs depend on patient behavior and local infrastructure.

The practical consequence for packaging specification is that sustainability requirements should be set alongside stability requirements, not before them. A product that requires a WVTR below 0.1 g/m²/24h cannot usually be moved to a mono-material format without reformulation or additional secondary protection.

What Buyers Should Ask

• What is the recyclability status of each candidate structure in the target markets?
• Does the structure carry any recognized recyclability or material certification?
• Which sustainability claims can be defended in marketing and regulatory filings?
• What documentation supports those claims?

Sustainability claims that cannot be substantiated create regulatory and reputational risk. Our team can advise on the structures available for your product category and their material composition — see the products page for our ranges, or contact us to discuss a specific requirement.