3710 Clean A/S MBB | Metalized ESD & Moisture Barrier Bag
The 3710 Clean A/S MBB is a high-performance, multi-layer packaging solution designed for the most rigorous cleanroom and static-sensitive environments. By combining the strength of metalized polyester with heavy-gauge dissipative polyethylene, this bag provides a robust “dual-threat” defense against both moisture and electrostatic discharge (ESD).
Engineered for durability and precision, the 3710 Series is the go-to choice for protecting critical electronic components and sensitive hardware that require a contaminant-free, moisture-controlled environment.
Key Performance Features
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Superior Shielding: Meets or exceeds industry standards for EMI/RFI Static Shielding and MVTR (Moisture Vapor Transmission Rate), ensuring your components remain dry and electronically safe.
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Heavy-Duty Durability: The heavy-gauge construction offers exceptional puncture resistance, making it ideal for shipping components with sharp edges or higher weights that might compromise standard bags.
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Cleanroom Optimized: Certified to IEST-STD-CC1246E Level 100. 3710 Clean A/S MBB is specifically processed for cleanroom applications where low-outgassing and minimal particulate contamination are essential.
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Silver Opaque Finish: The silver surface provides total opacity for visual privacy and is fully printable, allowing for easy labeling of part numbers or safety warnings.
Custom Quotes & Volume Pricing
The 3710 Clean A/S MBB is an industrial-grade solution tailored to specific application requirements. Because pricing is determined by volume, size, and mil thickness, this product is available via Request for Quote (RFQ).
Click the Request for Quote button to receive a personalized proposal based on your specific project needs.
Product Specifications
The 3710 Clean A/S MBB is a high-performance, multi-layer moisture barrier bag designed for the most sensitive electronic components requiring protection from humidity, ESD, and physical puncture. With a robust 7.0 mil construction, it provides one of the highest levels of physical and environmental protection available for cleanroom applications.
Physical Properties:
| Properties | Test Method | Specification |
| Thickness | Micrometer | 7.0 mils |
| MVTR | ASTM F-1249 @ 100 F | < .008 grams 100 sq. in. / 24 hrs |
| Yield | TCI #2 | 4,141 sq. in. / lb |
| Tensile Strength | ASTM D-882 | 40 lbs / in |
| Puncture Resistance | FTMS 101C | 20 lbs |
| Mullen Burst | ASTM D-774 | > 72 PSI |
| Seam Strength | ASTM D-882 | > 12 lbs. / in |
Electrical Properties:
| Properties | Test Method | Specification |
| Surface Resistivity | ASTM D-257 @15 RH | 7.0 mils |
| Surface Resistance | ANSI/ESD STM 11.11 | PE < 1011
PET < 1011 |
| Static Shielding | EIA-541 | < 20 volts |
| Static Shielding | EOS/ESD S11.31 | < 10 nJ |
| Electrostatic Decay | FTMS 101 Method 4046 | 0.03 sec |
| EMI Shielding | | 45 dB |
Key Technical Highlights:
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Extreme Moisture Protection: With a Moisture Vapor Transmission Rate (MVTR) of < .008, this bag is engineered for long-term storage of components sensitive to oxidation or “popcorning” during reflow.
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Superior Puncture Resistance: The 7.0 mil thickness and 20 lb puncture rating make the 3710 series ideal for heavy hardware, sharp-edged PCBs, or items requiring vacuum sealing.
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Level 100 Cleanliness: Processed in a controlled environment to ensure zero particulate contamination. Certified to IEST-STD-CC1246E Level 100, meeting the strict requirements of semiconductor and aerospace cleanrooms.
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EMI/RFI Shielding: Provides an average of 45 dB of electromagnetic interference shielding, protecting internal circuitry from external radio frequency threats.
Application Note: The 3710 Clean A/S MBB is best utilized when a standard shielding bag (like the 8100) does not provide enough physical strength or moisture protection for the specific storage cycle of your components.
Heat Sealing Parameters
To ensure the maximum protective capabilities of the 3710 Clean A/S MBB, proper heat sealing techniques must be applied. Due to the robust 7.0 mil multi-layer construction, this material requires specific temperature and pressure settings to create a consistent, airtight weld.
Recommended Sealing Settings
| Parameter |
Recommended Value |
| Sealing Temperature |
375°F – 425°F (190°C – 218°C) |
| Dwell Time |
2.0 – 3.5 Seconds |
| Sealing Pressure |
60 – 70 PSI |
Best Practices for Vacuum Sealing:
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Pre-Heat Validation: Ensure your sealing equipment has reached the target temperature before beginning a production run to prevent “cold seals” which may leak over time.
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Seal Integrity: A proper seal should appear uniform and transparent across the entire width of the bag. If the seal appears milky or charred, adjust the dwell time or temperature accordingly.
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Cooling Cycle: For the strongest bond, allow the seal to cool under pressure (if your equipment allows) for 1–2 seconds before releasing the jaws.
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Cleanliness: Ensure the internal sealing surfaces of the bag are free from dust or particulate before sealing to maintain Level 100 cleanliness standards and prevent seal bypass.
Equipment Note: While standard impulse sealers can be used, we recommend heavy-duty constant-heat or vacuum sealers for the 3710 series to ensure the 7.0 mil thickness is fully penetrated for a permanent moisture barrier.
The Right Bag for the Job: Selection Guide
Choosing the correct cleanroom packaging depends on three main factors: Contamination Sensitivity, Physical Durability, and Electrostatic/Atmospheric Protection. Use the guide below to find the ideal material for your application.
Best For: General cleanroom hardware, medical devices, and pharmaceutical sampling.
Best For: Sharp-edged parts, aerospace fasteners, and heavy machined hardware.
Best For: Long-term storage and nitrogen-purged applications where visibility is still required.
Best For: Highly sensitive ESD components that are also susceptible to moisture (MSL items).
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Why choose it? This is our most protective bag, combining a moisture barrier with anti-static properties.
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Key Benefit: Creates a “safe-room” for your components, shielding them from humidity and static discharge.
Best For: Integrated circuits, PCB boards, and components sensitive to external static fields.
Quick Comparison at a Glance
Still unsure? Contact our team for a material compatibility consultation or to request a sample for testing.
Don’t See the Exact Specs You Need?
At Bennett and Bennett, we understand that cleanroom requirements are rarely “one size fits all.” If our standard stock of Cleanroom Packaging doesn’t perfectly align with your technical data sheet, we can engineer a custom solution for you.
We specialize in:
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Custom Dimensions: Tailored bag sizes, tubing, and sheeting for non-standard hardware.
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Specific Cleanliness Levels: Packaging processed to meet your exact particulate and residue requirements (up to Level 100).
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Material Sourcing: If you need a specific mil-thickness or a unique laminate structure not listed on our site.
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Large Volume Quotes: Competitive tiered pricing for high-capacity production lines.
How Can We Help?
Our technical team is ready to assist you in navigating ESD, EMI, and Moisture Barrier specifications to ensure your components are fully protected.
Contact us today for a technical consultation or a custom quote.
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