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Recycled Content Is Reshaping Adhesive Performance: Industry Trends

AJ Adhesives – Industry Trends that Impact Adhesive Performance: Recycled Content Trends
March 18, 2026

Recycled Content Is Reshaping Adhesive Performance

What Packaging Teams Should Know

Across the packaging industry, recycled content is increasing in both substrates and adhesive technologies. Corrugated board, plastic bottles, flexible films, and paper labels are all incorporating higher percentages of recycled materials as brands and regulators push for more sustainable adhesives and packaging.

While the sustainability benefits are clear, these changes also affect how adhesives behave on production lines.

For operators, maintenance teams, and purchasing departments, understanding how recycled materials interact with adhesives is becoming an important part of maintaining stable packaging operations.

This article looks at two key trends shaping the adhesive industry today:

  1. Increased recycled content in packaging substrates
  2. Development of adhesives designed to support recyclable and circular packaging systems

Together, these trends are reshaping how adhesives are selected, evaluated, and used in manufacturing.

 

Trend #1: Recycled Content in Substrates is Changing Bond Behavior

One of the biggest shifts happening in packaging today is the growing use of recycled materials.

Corrugated board now commonly contains high percentages of recycled fiber. Plastic packaging increasingly incorporates post-consumer recycled (PCR) resins. Flexible films and paper labels are also evolving to meet sustainability targets.

While these materials help reduce environmental impact, they can introduce variability that directly affects adhesive bonding.

Recycled fiber substrates may contain:

  • Dust and fines that interfere with adhesion
  • Inconsistent absorption across paper fibers
  • Surface treatments that reduce adhesive penetration

Plastics made with recycled resins can also behave differently from virgin materials. Surface energy, additives, and contamination from previous use cycles can affect how adhesives spread and anchor to the material.

Because adhesives interact directly with the substrate surface, they often react first when material composition changes. Operators sometimes notice bonding changes before realizing the substrate formulation itself has shifted.

For production teams, this means adhesive troubleshooting increasingly involves evaluating the substrate — not just adjusting temperature or application weight.

 

Trend #2: Adhesives Are Being Designed for Recycled Packaging

As packaging sustainability initiatives evolve, adhesives themselves are also being reformulated.

Modern adhesive development increasingly focuses on supporting recycling systems and circular material flows.

This includes technologies such as:

  • Recyclable labeling adhesives
    • Adhesives engineered to wash off cleanly from PET bottles or release during fiber repulping so labels do not contaminate recycling streams.
  • Bio-based and renewable raw materials
    • Some hot melt and water-based adhesives now incorporate renewable feedstocks derived from plant-based materials rather than fossil resources.
  • Lower-temperature adhesive systems
    • Adhesives designed to run at reduced application temperatures help lower energy consumption on packaging lines while supporting sustainability goals.

These technologies are part of a broader shift in the adhesive industry toward design-for-recyclability, where adhesives must perform both during production and at the end of a package’s life cycle.

 

The Operational Reality: Sustainability Meets Production

For operators and maintenance teams, recycled materials introduce practical challenges.

Common production floor symptoms include:

  • Changes in adhesive penetration on recycled corrugate
  • Reduced bonding consistency between substrate lots
  • Greater sensitivity to temperature or compression changes
  • Variations in adhesive transfer or bead formation

These issues do not necessarily mean the adhesive is incorrect — they often indicate that the substrate itself has changed.

The key is understanding that adhesives operate as part of a system that includes:

  • substrate composition
  • equipment setup
  • environmental conditions
  • line speed and compression timing

As recycled content increases, that system becomes more dynamic.

 

Adhesives Built for Recycled Content

Because recycled substrates introduce more variability, many packaging operations look for adhesives that provide greater process stability and tolerance.

For example, metallocene hot melts are often selected in recycled corrugate applications because they maintain strong bonds even when fiber quality varies. These adhesives typically provide improved thermal stability, cleaner machining performance, and reliable bonding across a wider range of substrate conditions.

A common example is AJ 1910, a high-performance metallocene hot melt adhesive used for tray forming, case sealing, and carton sealing applications. Its thermal stability and clean machining characteristics help support consistent bonding even when substrate quality fluctuates.

Lower-temperature adhesives can also support sustainability goals by reducing energy consumption while maintaining bond performance. Products such as AJ 4020, a low-temperature hot melt designed for high-speed packaging lines, allow operations to run at reduced application temperatures while maintaining fast set speeds and reliable adhesion.

In many packaging environments, the most effective adhesive solutions balance three priorities simultaneously:

  • Stability on variable recycled substrates
  • Efficient application on high-speed equipment
  • Alignment with sustainability and energy-reduction initiatives
For more information about adhesives formulated with sustainability in mind, please contact our sales team!

 

What Purchasing Teams Should Consider

Sustainability targets often focus on packaging materials, but adhesives also influence whether those materials perform correctly.

When evaluating adhesive options in recycled packaging environments, purchasing teams should consider:

  • compatibility with recycled substrates
  • performance across substrate variability
  • recyclability or wash-off characteristics
  • energy consumption during application
  • total cost of use rather than cost per pound

Selecting adhesives that align with sustainability goals while maintaining reliable production performance helps avoid downstream operational issues.

 

The Big Takeaway

Recycled content is transforming packaging materials across the industry. That shift inevitably changes how adhesives interact with those materials.

At the same time, adhesive manufacturers are developing technologies designed to support recyclable packaging systems and circular material flows.

For production teams, the takeaway is simple:

Sustainable packaging doesn’t eliminate adhesives — it changes how they need to perform.

Understanding how recycled materials affect bonding behavior allows operators, engineers, and purchasing teams to make better adhesive decisions and maintain stable packaging operations as packaging materials continue to evolve.

 

Final Thoughts

Sustainability trends will continue increasing recycled content across packaging materials in the coming years. Adhesives will remain a critical component in making those systems function reliably.

When adhesive selection considers both production performance and end-of-life recyclability, manufacturers can support sustainability goals without sacrificing efficiency on the line.

At AJ Adhesives, we work with production teams, maintenance crews, and purchasing departments to evaluate how adhesives interact with evolving packaging materials — including recycled substrates and sustainability-driven packaging formats.

How recycled content & materials are changing adhesive performance and formulations. What should operators and purchasing teams understand? sustainable adhesives recycled substrates recycled packagingReady to find the solution for your line? Contact your AJ Adhesives representative today!

To speak with someone immediately, call: (314) 652-4583

For more information or questions, email us at: info@ajadhesives.com

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Sources for Further Reading

These sources provide supporting industry research and guidance on recycled materials, recyclability design, and sustainability trends in adhesives and packaging: