The problem

EVA foam is widely used in electronics packaging due to its cushioning properties, low weight, and ease of fabrication. However, untreated EVA foam is electrically insulating and can accumulate static charge during handling, insertion, and removal of components.

Conventional ESD foam solutions typically rely on carbon loading, which increases stiffness, shedding, and long-term degradation.

The substrate

Closed-cell EVA foam sheets and die-cut inserts used for cushioning, spacing, and protection of electronic assemblies.

Why replacement was not viable

• Carbon-filled ESD foams are expensive and limited in availability
• Reduced flexibility and cushioning performance
• Foam degradation and particle shedding over time
• Sustainability and recyclability concerns

The ProShieldESD solution

ProShieldESD was applied as a thin, controlled coating to the surface of EVA foam inserts. The coating creates a continuous dissipative layer while preserving the foam’s cushioning and flexibility.

The treated foam maintains ESD performance independent of humidity and repeated compression cycles.

Performance outcome

• Surface resistance within the ESD dissipative range
• Uniform charge dissipation across foam surfaces
• No loss of cushioning or resilience
• Stable performance under repeated use

Standards alignment

The ESD-coated EVA foam inserts support packaging systems aligned with IEC 61340 and ANSI/ESD S20.20 requirements when used as part of a controlled transport solution.

Key benefits

• Preserves foam flexibility and cushioning performance
• Avoids brittleness associated with carbon-filled foams
• Extends usable life of packaging inserts
• Supports sustainable packaging strategies