Case Study: Custom ESD Shielding Bags for PCB Assembly

1. Client Background

A client from the semiconductor industry required specialized packaging for PCB assemblies (PCBA) used in their production line. Their products are highly sensitive to static electricity and electromagnetic interference, and reliable packaging was essential to prevent ESD-related failures.

2. Customer Challenge

Previously, the client used general anti-static bags, which offered basic static protection but lacked effective shielding against electromagnetic discharge. This resulted in:

· Higher risk of ESD damage during transportation.

· Limited durability for repeated use.

· Increased costs due to frequent replacement.

3. Our Solution

Yufa Polymer designed a custom metallic shielding bag with the following specifications:

· Material structure: PET + Aluminum metallization + CPP/PE + Anti-static coating.

· Shielding effectiveness: <50 nJ.

· Static decay: <2 seconds.

· Surface resistance: 10⁸–10¹¹ Ω.

· Custom dimensions: optimized for the client’s PCBA trays, ensuring secure fit.

· Thickness: 0.075 mm ±10%, with strong heat-sealed edges for durability.

4. Delivery & Implementation

· Order quantity: 50,000 pcs.

· Thickness: 3 mil

· Lead time: 10 days.

· Packaging: packed with protective carton + moisture barrier to ensure safe delivery.

The bags were delivered on schedule and immediately put into use in the client’s factory for in-house circulation and export shipments.

5. Client Feedback

The client confirmed that:

· The new ESD shielding bag significantly reduced static failures in transit.

· Durability exceeded expectations, allowing multiple reuse cycles.

· Shielding performance was consistent with international standards.

They have since placed repeat orders and expanded the application of our anti-static bag solutions to other electronic components.

�� Why This Matters

This case demonstrates how OEM ESD packaging solutions can directly address customer pain points — from static protection to cost efficiency. At Yufa Polymer, we not only manufacture metallic shielding bags, but also provide custom design and rapid delivery to meet industry-specific demands.

�� Contact us to learn more about OEM & custom anti-static packaging solutions.