The Do’s and Don’ts of Downgauging Your Packaging

Downgauging has become a major focus across the healthcare packaging industry. The process of downgauging looks to reduce the packaging materials in use by decreasing the thickness, or gauge, of the packaging. Industry’s focus on this initiative is driven by increasing cost pressures and sustainability goals. When executed appropriately, downgauging can unlock both economic and environmental benefits. There are several key factors that you should always take into account when considering a material downgauge.

Don’t: Treat downgauging as a simple material swap.

Reducing gauge or switching to a thinner structure may seem straightforward, but there is really a lot to consider. It’s a good reminder that packaging performance is not dictated by thickness alone.

Do: Evaluate the full sterile barrier system.

We recommend approaching downgauging as a system-level change. Be sure to assess how material changes interact with factors like:

• Device geometry and weight
• Sealant layers and coating chemistry
• Forming and sealing processes
• Distribution and handling environments

Even small reductions in material can influence puncture resistance, flex durability, and seal performance. A holistic evaluation helps ensure the sterile barrier system continues to meet ISO 11607 requirements for maintaining sterility through distribution and storage.

Don’t: Prioritize cost savings over performance requirements.

While material reduction can deliver cost benefits, it cannot be at the expense of product protection or compliance.

Do: Define critical performance requirements upfront.

Before pursuing downgauging, clearly establish acceptance criteria, including:

• Seal strength and integrity (per ASTM F88/F1929 or equivalent)
• Microbial barrier performance
• Compatibility with sterilization methods (e.g., EtO, gamma, e-beam)
• Resistance to puncture, abrasion, and flex cracking

These requirements should serve as guardrails and downgauging efforts should operate within these requirements.

Don’t: Skip rigorous validation or assume equivalence.

Never skip your testing. Assuming a thinner material will behave like the original can introduce hidden risks, especially under stress conditions.

Do: Validate across worst-case conditions and process variability.

Downgauging will typically narrow your margin for error. Because of this, validation should incorporate both material performance and process capability, including:

• Seal strength, burst, and creep testing
• Dye penetration or bubble leak testing for seal integrity
• Accelerated and real-time aging (ASTM F1980)
• Distribution simulation (ASTM D4169 or ISTA protocols)
• Transit conditioning (temperature, humidity, altitude)

Pro Tip: You should also reassess your packaging’s sealing process windows (temperature, pressure, dwell time). Thinner materials may be more sensitive to variation, requiring tighter controls and potentially updated validation of IQ/OQ/PQ.

Don’t: Ignore lifecycle performance and assume “less material = more sustainable.”

Using less material doesn’t automatically result in a more sustainable solution, especially if it introduces risk of damage, waste, or usability issues.

Do: Evaluate performance across the full lifecycle.

When downgauging packaging, it should be assessed from production through end use:

• Manufacturing: Runability on packaging lines, scrap rates, and consistency
• Distribution: Resistance to shocks, compression, and handling stresses
• Storage: Stability under environmental conditions
• End use: Ease of opening, clean peel, and aseptic presentation

From a sustainability perspective, consider total system impact and not just material reduction. A package that fails in the field or requires rework can negate any environmental gains. True sustainability balances material efficiency with durability, reliability, and waste prevention.

Don’t: Go it alone.

Downgauging decisions made in isolation can overlook critical interactions between materials, processes, and device requirements.

Do: Collaborate with experienced partners early.

Engage a cross functional team of packaging engineers, material scientists, and suppliers early in the process. For medical device applications, this collaboration can help:

• Identify suitable material structures and sealing layers
• Anticipate sterilization and aging impacts
• Align on validation strategy and regulatory expectations

Early collaboration reduces risk, shortens development timelines, and helps ensure downgauging efforts are both effective and compliant.

Remember, downgauging isn’t just about using less material. It’s about optimizing performance within tighter constraints. With the right approach, manufacturers can achieve cost and sustainability goals while maintaining the integrity of the sterile barrier system and protecting patient safety.