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| Specification | Details |
| Material Structure | Polyethylene (PE) embedded with VCI vapor corrosion inhibitors . |
| Available Thickness | 0.03mm – 0.25mm (Customizable) . |
| Standard Colors | Transparent, Blue, Green, Yellow (Custom colors available) . |
| Bag Styles | Flat Bags, Gusseted Bags (M-Type), Zipper/Resealable Bags, 3D Bags . |
| Custom Sizes | Yes, with a maximum width of up to 8 meters available . |
| Protection Period | 2 years or more (when used correctly and sealed) . |
| Compliance & Certifications | Complies with SGS and RoHS environmental standards . |
VCI Square-Bottom Bags are three-dimensional rust-preventive packaging solutions for medium and large metal components. They combine multi-layer VCI co-extruded film technology with a square bottom design. This design prevents stress concentration at the base, improving load-bearing capacity and stacking stability.
The bags also provide moisture-proof sealing and physical protection. As a result, they meet the long-term storage and cross-border shipping needs of complex-shaped industrial workpieces.
The bottom forms one seamless piece, enhancing strength compared with traditional folded-edge bags. Consequently, it reduces cracking during stacking.
The square shape allows more efficient storage and easier logistics management. This makes warehouse stacking and transport more organized and safer.
The bags provide both vapor-phase and contact protection. Vaporized inhibitors reach intricate shapes, hard-to-access areas, and internal surfaces. Meanwhile, the bag itself blocks moisture and dust.
Metal parts can be used immediately after unwrapping. This eliminates cleaning or degreasing, saving time and labor.
By preventing rust, the bags reduce scrap rates, rework, and returns. Their simplicity also streamlines packaging operations, increasing ROI.
The bags are non-toxic and safe for users and the environment. They replace greasy coatings and oils.
The clear material allows visual inspection of contents without reducing protection. This makes it easier to check and sort products.
Durable PE material can be heat-sealed or taped. This ensures a reliable semi-sealed or fully sealed environment.
VCI Square-Bottom Bags protect metal components across industries:
Automotive & Machinery – Engine parts, bearings, valves, tools, and entire machinery.
Electronics & Electrical Equipment – Circuit boards, connectors, control panels, and precision components.
Aerospace & Defense – Aircraft components, avionics, and ammunition.
Hardware & Metalworking – Fasteners, stamped parts, hand tools, and castings.
Industrial Supplies – Pumps, motors, and spare parts during storage or transport.
How do VCI Square-Bottom Bags work?
VCI compounds vaporize and fill the air space inside the bag. They form a thin protective layer on all exposed metal surfaces, including recessed areas, preventing corrosion.
Are these bags suitable for all metals?
Yes. They protect steel, iron, copper, brass, aluminum, chromium, zinc, and alloys. For sensitive metals or electronics, we provide specialized guidance.
How should I package for best results?
Clean and dry metal parts.
Wear gloves to prevent contamination.
Place items inside the bag and seal using heat or tape.
For sharp edges, use heavier gauge film or handle with care.
What is the shelf life of unused bags?
Stored in original packaging, in a cool and dry place away from sunlight, the shelf life is 1–3 years. Use bags promptly for maximum effectiveness.
Can the bags be reused?
For guaranteed protection, use a new bag for each packaging cycle. Once opened, VCI vapor escapes and protection decreases.
What is the Minimum Order Quantity (MOQ)?
We are flexible. Contact our sales team to discuss MOQ based on your requirements and bag specifications.
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