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Dry bulk | Shipping containers | Polyethylene film

Dry Bulk Container Liners for Shipping Containers

Polyethylene container liners for dry bulk cargo in 20ft and 40ft shipping containers. Built for free-flowing solids such as polymer pellets and powders when you need a clean film interface between cargo and container walls. Film thickness 25 to 300 microns.

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25 to 300 microns20ft / 40ftDry bulk PE linersFill and discharge on RFQ

What a container liner is (and is not)

A dry bulk container liner is a flexible polyethylene film liner installed inside an ISO shipping container so dry cargo fills a clean free volume. Container liners are available in PE film and application-specific constructions, with different filling and discharge configurations. BENZ develops the configuration according to cargo, container size and handling method.

It is not a box or crate liner, not a pallet cover, and not a container desiccant moisture unit. Flexitanks and liquid bulk are out of scope here.

Where PE container liners are used

Cargo contextWhy a liner
Polymer pellets / resinClean walls, fewer residual bags
Dry powdersContainment and container cleanliness
20ft dry bulkStandard short container format
40ft / high cubeLarger free volume bulk moves

Manufacturing parameters

ParameterWhat BENZ supplies
Film thickness25 to 300 microns
Base filmsPolyethylene (PE)
Container sizes20ft, 40ft and high cube as specified
Design inputsCargo type, filling method and discharge method

How to specify

State 20ft, 40ft or high cube. Describe cargo type and filling method (top, rear, pneumatic, conveyor or gravity). Discharge method is equally important and should be stated separately, not as an either-or choice. Anti-static needs for polymer handling should be called early. Food-contact requirements only when documentation exists for that build. Installation practice differs by liner design, so notes from your logistics team help the first quote.

What we will not over-claim: no blanket food-grade promise on every PE liner; no fluidising woven systems claimed unless that exact build is offered; no confusion with container desiccant bags hanging in a packed dry box. If your cargo is liquid, stop here and talk about the correct bulk liquid system instead.

Enquiry checklist

DetailWhy it matters
Container size20ft, 40ft, HC if used
CargoPellets, powder, fertilizer, other dry solid
Filling methodTop, rear, pneumatic, conveyor, gravity
Discharge methodHow cargo leaves the liner
Film thickness25 to 300 microns
QuantityLots and typical lanes if known

Common questions

What is a dry bulk container liner?

A flexible liner installed inside a shipping container so dry bulk cargo sits in polyethylene film free volume rather than against the container walls. Also called a shipping container liner or dry bulk liner.

Is this the same as a box liner or pallet cover?

No. Box liners fit cartons and crates. Pallet covers slip over palletized unit loads. Container liners are sized for ISO shipping containers and bulk filling method and discharge method.

What cargo types use PE container liners?

Dry free-flowing solids such as polymer pellets, powders and other non-liquid bulk where a film liner protects product and simplifies container cleanliness. Liquid bulk and flexitanks are a different product family.

What film thickness can you supply?

BENZ can supply film constructions from 25 to 300 microns, selected for cargo type, handling, filling method and discharge method.

Do you claim food-grade on every liner?

No. Food-contact grades only when the exact construction is documented for that enquiry. Industrial PE liners are not automatically food-grade.

What do you need for a quote?

Container size (20ft, 40ft, HC if relevant), cargo type, filling method and discharge method, quantity, and any moisture or anti-static needs.

Moving dry bulk in a container?

Send container size, cargo type, filling method and discharge method. We will quote a PE dry bulk liner path that matches the job.

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