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Aluminum Foil Flat Bag
The aluminum foil flat bag is the standard-format barrier packaging solution for individual electronic components, small PCB assemblies, and industrial parts requiring reliable moisture and ESD protection. The three-side-sealed construction — factory-sealed on three edges with a single open end — is the most widely used aluminum foil bag format in electronics component packaging worldwide, valued for its structural simplicity, consistent barrier performance, and high-volume efficiency on the production line.
After components are placed inside, the open end is heat-sealed to create a complete hermetic enclosure. The result is a compact, clean package with minimal material footprint — reducing packaging cost per unit while maintaining full aluminum foil barrier performance.
Product Specifications
| Material | PET / AL / PE multi-layer composite |
| Standard Thickness | 0.10 mm / 0.14 mm (customizable) |
| Product Color | Silver (customizable) |
| Custom Printing | 1–8 colors, customizable |
| Custom Size | Max width 1500 mm (min width unlimited) |
| Bag Format | Three-side seal, single open end |
| Barrier Properties | Excellent oxygen & moisture barrier |
| Ideal For | Electronic components, PCB, IC chips, semiconductors |
This product provides passive moisture and ESD barrier protection through the aluminum foil laminate layer. It is not a certified ESD bag; surface resistance parameters do not apply to this product. For certified ESD shielding, see our aluminum foil bag range.
Key Features
Three-Side Seal Construction
Factory-sealed on three sides with one open end for component loading. The simple geometry minimizes material use and packaging time — critical for high-volume electronics assembly and distribution operations where per-unit cost and throughput both matter.
Full Aluminum Foil Barrier
PET outer film, aluminum foil core, anti-static PE inner layer. The continuous aluminum foil layer delivers near-zero WVTR and passive electrostatic shielding — the same material construction used across the industrial aluminum foil bag range, in a flat three-side-seal format.
Minimal Footprint, Lower Logistics Cost
Flat bags conform closely to the shape of the packaged component, eliminating void space and reducing shipping volume compared to gusseted or stand-up formats. For high-value components shipped in bulk, this directly reduces per-unit logistics cost.
Heat-Seal Compatible
The inner PE layer is designed for heat-sealing after loading. Compatible with standard impulse heat sealers used in electronics production environments. Vacuum sealing is also supported — the outer PET layer provides sufficient puncture resistance to maintain bag integrity under vacuum pressure.
Custom Sizes for Any Component
Available in all custom dimensions. Sizing guide: add 20–30 mm to component width and 40–50 mm to component length to allow for the heat seal area and comfortable loading clearance. For example, a 100 mm × 150 mm PCB uses a 130 mm × 200 mm bag.
Small Batch Orders Welcome
Custom-sized flat bags are available in small batch quantities — accessible for businesses at all production scales, from prototype runs to high-volume manufacturing.
Applications
Individual Semiconductor Packages
The standard packaging format for individual ICs, transistors, and discrete semiconductor packages between production stages or during inter-factory transfer.
IC Reels Between Production Runs
Flat bags are widely used to individually seal SMD component reels between production runs, protecting moisture-sensitive MSL components during storage periods.
Small PCB Assemblies
For small and medium PCB assemblies requiring individual sealed packaging — flat bags provide a clean, compact enclosure with full barrier performance and no excess material.
Hard Disk Drives & Storage Modules
Aluminum foil flat bags are the standard packaging for hard drives and storage modules, providing moisture and ESD protection in a low-profile format suited to the flat geometry of these components.
Sensors & Precision Instruments
Sensors, MEMS devices, and precision instruments requiring individual sealed packaging benefit from the flat bag format — precise sizing minimizes handling stress during packaging and transit.
Frequently Asked Questions
How do I select the right size flat bag for my component?
Add 20–30 mm to the component width and 40–50 mm to the component length. A 100 mm × 150 mm PCB, for example, would use a 130 mm × 200 mm bag. This provides comfortable loading clearance and adequate heat seal area on all sides.
What is the difference between a flat bag and a stand-up pouch?
Flat bags have no gusset and lie flat — compact and efficient for individual component packaging. Stand-up pouches have a gusseted base that allows the bag to stand upright, better suited for bulk components or retail display. For most individual electronics component packaging, flat bags are the standard specification.
What is the difference between an aluminum foil flat bag and an industrial aluminum foil bag?
The industrial aluminum foil bag uses a four-layer PET/Nylon/AL/PE laminate with a nylon layer for higher mechanical strength — better suited to large PCB assemblies, heavy components, and long-haul ocean freight. The flat bag uses a three-layer PET/AL/PE laminate optimized for individual component packaging where compact size and packaging efficiency are the priority.
Can flat bags be used for vacuum packaging?
Yes. Aluminum foil flat bags are compatible with vacuum sealing. The outer PET layer provides the puncture resistance needed to maintain bag integrity under vacuum pressure. For applications requiring vacuum sealing combined with desiccant for long-term storage (12–24 months), see our aluminum foil vacuum bag.
Are custom sizes and small batch orders available?
Yes. All dimensions are custom manufactured and small batch orders are welcome. Contact Mavis with your component dimensions for sizing guidance and a quote.
Suitable for distributors and manufacturers across Vietnam, Thailand, Malaysia, Singapore, and Indonesia. Contact us to verify compliance requirements for your specific market.
| Minimum Order | Flexible — contact us with your target quantity for confirmation |
| Sample Order | Available — sample cost refunded on first bulk order |
| Custom Print | Logo, design, and color printing supported (gravure up to 8 colors) |
| Custom Size | Full dimension customization available with no tooling fee (standard construction) |
| Lead Time | Stock sizes: 3–7 days · Custom production: 10–18 working days |
| Packaging | Export carton with inner poly-bag grouping; labeling to buyer spec |
All dimensions are fully customizable. Send your target size and quantity to [email protected] — we'll confirm feasibility and pricing within 24 hours.
Product data sheets and test reports are available upon request. Email [email protected] with your product and application details.
Email [email protected] or WhatsApp +86 186 2610 0216 with your dimensions and quantity. We respond within 24 hours.
