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    Simplify your shipping process with a single supersized container liner. By replacing multiple boxes and bags, you can effortlessly cut both operating and packaging costs while transporting dry bulk cargo.


    Check out our Kratobag products to find the shipping container liner that is right for you and your cargo.


    Ensure a safe and controlled environment for your bulk cargo using easy-to-install sea bulk and dry bulk container liners.

    Kratobag Series 6000

    Cargo is loaded through a large front opening, then fastened with a belt for secure transportation.

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    Kratobag Series 5100

    Cargo is loaded through a top loading spot on the front bulkhead and emptied through two spouts at the bottom.

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    Kratobag Series 5000

    Cargo is loaded through a top loading spot on the front bulkhead and emptied through a single spout at the bottom.

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    Kratobag Series 4000

    Cargo is loaded through a conveyor belt at the top of the front bulkhead and emptied through a spout at the bottom.

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    Cargo is loaded through a conveyor belt at the top of the front bulkhead and emptied through a spout at the bottom.

    Kratobag sea bulk liners are suitable for a variety of industries, from food and seeds to chemicals and minerals. How can we help you transport your cargo safely?



    What is a shipping liner?

    A shipping liner—also called a container liner or sea bulk liner—is a protective packaging solution that facilitates the transportation of bulk products. Made from high-quality food-grade materials, these container liner bags help agricultural, mineral, and chemical manufacturing industries move bulk goods with confidence.

    When shipping dry bulk goods, it’s important to ensure cargo is isolated and protected from damaging external environmental factors. Container liner bags can transform a shipping container into a safe, reliable transport solution for bulk goods by creating an extra interior wall that protects the product.

    What is Kratobag?

    Kratobag is a shipping liner solution that comes in several varieties, detailed below:

    • Kratobag Series 6000: This shipping liner features a large opening at its front and is fastened with a secure belt.
    • Kratobag Series 5100: This sea bulk liner is loaded through a top loading spout, then expelled through two spouts at the bottom after reaching its destination.
    • Kratobag Series 5000: This shipping liner features an entry top spout and is expelled through a spout at the bottom of the liner.
    • Kratobag Series 4000: This dry bulk container liner is loaded by a conveyor belt at the top of the front bulkhead, then emptied through a convenient bottom spout.
    • Kratobag Custom Series: We have created various liners for non-traditional goods as well. We will work to help you find the right solution for your application and based on your infrastructure for loading and unloading.

    What kind of products should be transported in shipping container liner bags?

    Sea bulk liners like Kratobag are effective shipping solutions for a variety of cargo types and products, including chemicals, petrochemicals, minerals, foods, seeds,and agricultural products.

    In other words, container liners are ideal for any bulk product that “flows,” including powders, granules, and waste. Spouts at the bottom of most Kratobag liners make emptying containers as straightforward and efficient as filling them.

    What are the benefits of shipping liners?

    Shipping container liners are an ideal bulk shipping solution for several reasons.

    High-quality container liner bags reduce the need for individual boxes and bags, decreasing overall shipping costs as well as the amount of single-use products needed to transport bulk goods. This change results in a smaller environmental footprint for logistics operations. Additionally, because the liner expands to match the exact dimensions of the container, there’s less wasted space in each container.

    Kratobag shipping container liner bags also facilitate the safe and hygienic transportation of precious goods, protecting cargo from contamination by keeping out dust, dirt, moisture, and salt. Because shipping liners form an extra layer between the container and the products inside, they can even contribute to temperature control.

    From an efficiency standpoint, container liner bags allow for better inbound and outbound logistics. One container liner bag is easier to install and transport than hundreds of bags or boxes, so less time is required to load and unload the container. Fixing a bulk container liner to the inside of a container takes mere minutes.

    Finally, bulk liner bags can keep the contents of a sea bulk container from leaking, even if the container itself sustains damage during the voyage. When even one leaky container can cost thousands in lost products, fines, and clean-up fees, bulk bag liners offer peace of mind and financial security.

    How does a shipping liner work?

    Shipping container liner bags are made of robust materials that provide a protective barrier between the wall of the shipping container and the goods inside. Using a dry bulk container liner is as simple as affixing the bag to the inside of an empty container. Two people can efficiently install a liner in minutes.

    In most cases, there’s no need to add cardboard or other materials to prepare the container for the liner. As long as the container is free of debris that could puncture the bag, the container liner can go directly against the walls.

    The container lining fits the exact dimensions of a shipping container so that organizations can take full advantage of the container space. Bulk bag liners can fit various shapes and sizes of shipping containers.

    A bulkhead is included with shipping container liners. Bulkheads act as a fourth wall that keeps goods in place at the container’s opening, whether the door is open or closed. Most of the time, bulkheads are made from corrugated cardboard or another material and exist separately from the ocean container liner. However, with some Kratobag varieties, the bulkhead is built into the liner for added convenience and ease of install of bars.

    How are bulk container liners loaded and unloaded?

    Depending on the material, liners can be loaded or unloaded in various ways.

    Fine, lightweight products such as powders and sands can be packed into containers using gravity or pneumatic loading techniques. Larger or heavier bulk goods—including beans, grains, or pellets—can instead travel down a conveyor belt into the container liner. In all cases, the goods generally enter the liner through an opening near the top of the material.

    Unloading is similarly dependent on the product inside the liner. Potential options for discharge include funneling the goods to a silo via a hose or relying on gravity to empty the contents into a pit or down a ramp.

    Different loading methods may require different liner solutions, so choosing the right bulk container liner for the job is crucial.