Metal Parts

The Complete Guide to VCI Poly Bags: Rust Prevention Made Easy

When it comes to protecting metal parts from corrosion, traditional methods like oil and grease can be messy, time-consuming, and costly. That’s where VCI Poly Bags come in as a game-changer. Not only are they clean and easy to use, but they also provide superior protection for metal parts, whether in storage or transit. Let’s dive into everything you need to know about VCI Poly, VCI Bags, and how they will protect your metal parts against rust and corrosion.

October 28, 2024

When it comes to protecting metal parts from corrosion, traditional methods like oil and grease can be messy, time-consuming, and costly. That’s where VCI Poly Bags come in as a game-changer. Not only are they clean and easy to use, but they also provide superior protection for metal parts, whether in storage or transit. Let’s dive into everything you need to know about VCI Poly, VCI Bags, and how they will protect your metal parts against rust and corrosion.  

What Are VCI Poly Bags?

VCI Poly Bags, or Vapour Corrosion Inhibitor Bags, are specially designed polyethylene bags infused with VCI chemistry. These vapour corrosion inhibitors release molecules that form a thin, invisible layer on the surface of the metal. This protective layer prevents corrosion by blocking moisture, oxygen, and other contaminants from reaching the metal surface.

These bags are ideal for protecting metal parts during storage or shipment, without the need to apply traditional rust-preventative oils or greases. Simply seal the metal part inside the VCI Poly Bag that will provide a protective shield ensuring that your parts are rust-free and ready for immediate use upon removal.

At Polytarp Products, we manufacture high-quality VCI Poly Bags from premium polyethylene resins combined with VCI additives. Our products provide superior protection during transportation whether road, rail, ocean or sea and provide excellent, worry-free long-term storage protection, making them a versatile solution for multiple industries including automotive, construction, and agriculture.

VCI Bags with Metal Components

How Do VCI Poly Bags Work?

The magic of VCI technology lies in its vapour action. When a metal part is placed in a sealed VCI Bag, the inhibitors within the bag release vapour molecules that coat the metal. This coating is just 2-3 molecules thick, providing a powerful shield that blocks corrosion. The bag creates both a physical barrier and a molecular one, offering dual protection.

When the bag is opened, the VCI vapours evaporate, leaving the metal parts ready for use with no additional cleaning required. This makes VCI Poly Bags a clean, effective alternative to traditional methods that require washing off oils or greases. In some cases, these bags can offer up to three years of protection, depending on environmental conditions and the specific application.

The Versatility of VCI Poly Bags and Films

At Polytarp Products, our VCI Poly Bags and films are designed to meet various needs across industries. We offer custom solutions for specific requirements, including:

Custom Sizes: Layflat widths are available up to 100 inches, and gusseted options can go even wider. You can also specify the length and thickness of the poly film, with options up to 20 mil.

Custom Colours: Choose from an array of colours, including white, blue, green, red, yellow, and more. These colours can be produced as tinted or opaque, and you can even opt for one-colour random placement printing to feature your company’s logo or other important details such as production dates and lot numbers for traceability.

Product Types: We provide VCI products in various forms, including bags, sheets, covers, tubing, and shrink film. Whether you need protective covers for large parts or compact bags for smaller components, we have a solution that will meet your needs.

Additional Customizations: We also offer additional options like UVI (ultraviolet inhibitor) additives for outdoor protection, available in 6- or 12-month options. For different handling and packaging needs, you can choose high-slip, low-slip, or anti-static properties for the VCI film.

These customization options ensure that our VCI Poly Bags and films provide the best possible protection for your specific applications.

Industries that Use VCI Poly Bags

Many industries benefit from using VCI Poly Bags to protect metal parts from corrosion. Here are just a few of the sectors where VCI Bags play a crucial role:

Automotive: Metal components, such as gears, brakes and engine parts, need to remain rust-free during storage and shipment. VCI Bags ensure that these parts arrive at their destination in perfect condition, without the need for additional rust-prevention measures.
Industrial and Manufacturing: Paint cans, metal tools, and other industrial items can be stored or shipped in VCI Poly Bags to prevent corrosion. This makes them ideal for long-term storage or during extended transportation periods.
Marine and Fishing: VCI Bags are perfect for protecting fishing equipment, including lures, hooks, and other metal parts that are prone to rusting such as propellers and valves especially in salty, marine environments.
Construction and Agriculture: Metal parts used in machinery or building structures are vulnerable to rust, particularly when exposed to moisture. VCI Poly Bags provide a reliable barrier to prevent corrosion during transit or when stored on-site.
Defense, Aerospace, and Electronics: Sensitive equipment and components in these industries must remain free of corrosion to function correctly. VCI Bags provide a critical layer of protection, keeping electronic parts, machinery, and metal alloys in optimal condition.

Whether the goal is to prevent rust on automotive parts or to safeguard industrial tools, VCI Poly Bags deliver the rust-prevention power needed to protect vital metal parts across various sectors.

Metal Components

Do VCI Poly Bags Need to Be Sealed?

Yes, sealing VCI Poly Bags is crucial for them to be effective. The airtight seal ensures that the VCI vapours remain inside the bag, protecting the metal parts from corrosion. There are multiple ways to seal VCI Bags, including heat sealing, zip-tops, or using ties and tape.

How Long Do VCI Poly Bags Last?

VCI Poly Bags can provide protection for up to three years, depending on factors such as environmental conditions and the type of metal being protected. As long as the bag remains sealed and undamaged, it will continue to release VCI vapours to protect the metal parts inside.

The duration of protection can vary based on the product’s application and storage environment. For instance, metal parts stored in highly corrosive environments may require more frequent checks or additional protective measures. However, in typical storage or shipping conditions, our bags offer long-term rust protection that minimizes the need for other safeguarding.

Are VCI Poly Bags Recyclable?

Yes, VCI Poly Bags are environmentally friendly and can often be recycled depending on local recycling guidelines. Additionally, they are non-hazardous and safe to use in a variety of environments. In some cases, VCI Bags can even be reused, making them a sustainable choice for rust prevention.

Many companies choose VCI Poly Bags not only for their corrosion protection but also for their sustainability benefits. By choosing recyclable, non-toxic materials, businesses can contribute to reducing their environmental footprint.

Customization Options at Polytarp Products

At Polytarp Products, we understand that every application has unique requirements. That’s why we offer a wide range of customization options for our VCI Poly Bags:

Sizes and Quantities: We provide layflat widths of up to 100 inches and lengths customizable to your needs. We also offer bags in thicknesses of up to 20 mil, depending on the level of protection required. Minimum order quantities apply—contact us for more details.

Custom Colours: Choose from a wide range of colour options, whether you need tinted or opaque films. We also offer one-colour random inline placement printing, allowing you to include company logos or other important information.

UVI Additives: For applications where exposure to sunlight is a factor, we offer UV inhibitors that provide protection against harmful sun rays that cause degradation. These options are available in 6 and 12-month variants, ensuring maximum product protection, even in outdoor conditions.

Specialty Features: Depending on the application, you can choose high-slip, low-slip, or anti-static films. These features provide flexibility for various industries and storage environments.

Our dedicated team of product managers is always available to assist you in finding the perfect solution for your needs. Simply reach out to us for a quote or more information.

10 Benefits of VCI Poly Bags

Here are the top reasons to switch to VCI Poly Bags for rust prevention:

1. Ease of use: Simply place metal parts in the bag and seal it airtight.

2. Clean and dry: No messy oils or greases are required, saving time and labour.

3. Physical barrier: The bag protects against contaminants like dirt, dust, and water.

4. Molecular barrier: VCI vapours form a protective layer on the metal’s surface.

5. No need for cleaning: Metal parts can be used immediately upon removal from the bag.

6. Cost-effective: Saves money by eliminating the need for oils and reducing labour costs.

7. Variety of sizes: Available in different sizes and thicknesses for various applications.

8. Transparent: Allows easy inspection and identification of metal parts without opening the bag.

9. Compatible with other VCI products: For additional protection in extreme environments.

10. Safe and recyclable: Non-hazardous, environmentally friendly, and recyclable.

Conclusion

VCI Poly Bags are a revolutionary solution for anyone looking to protect metal parts from corrosion. They offer a clean, efficient, and economical alternative to traditional rust-prevention methods, all while being environmentally friendly. Whether you’re storing metal parts for the short term or shipping them over long distances, VCI Poly Bags provide the protection you need.

For more information about our VCI Bags visit our product information page here