When is a flat liner enough and when is a 3D liner needed?

A flat liner suffices for containers with a clear internal contour and free-flowing bulk. A 3D liner makes sense when residual discharge and freedom from folds are critical, for instance with liquids or high-value powders.

What does automatic length adjustment achieve?

It keeps liner length within tolerance even when web running varies. Without that correction small deviations add up over the bag length and cause scrap.

Are antistatic versions possible?

Yes, with suitable film types. For dust-explosion-prone bulk goods, dissipative properties must be separately verified via the film supplier.

DLP-2500 FIBC-Flachliner

DLP-2500: FIBC bulk-box flat liners

The DLP-2500 produces flat liners for FIBC bulk boxes with two valves. Sensors adjust bag length automatically during production so that film-web tolerances do not accumulate in the liner length, which is decisive for liners several metres long.

Category: Industrial packaging
Technology line: Intelligent line

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Bag formats

FIBC flat liners
Bulk-box liners
Flat bags with filling and discharge valve

Materials

Heavy-duty PE films
Co-extruded multilayer films
Antistatic versions on request

Applications

Plastic granulate and regranulate
Chemicals and powders
Building materials and minerals
Animal feed and agricultural products

What defines this machine

Automatic bag-length adjustment

Sensors track actual web position and correct cut length continuously. On liners metres long, small deviations otherwise add up into scrap.

Two valves in flat format

Filling and discharge valves are positioned and sealed accurately even in a flat liner, despite the large web width.

Flat liner instead of 3D liner

For bulk boxes with a defined internal contour a flat liner is sufficient. It uses less material, costs less and is produced faster than a 3D liner.

Large working width

The 2500 frame allows liner widths covering the full bulk-box cross-section without an extra longitudinal seam in the floor area.

Technical data

DLP-2500 FIBC-Flachliner: Technical data
Bag type	flat bag with 2 valves
Length adjustment	automatic via sensors
Bag width	on request
Bag length	on request
Output rate	on request
Max. film width	on request
Max. reel diameter	on request
Connected load	on request
Compressed air	on request
Machine dimensions (L × W × H)	on request
Weight	on request

Numerical values are confirmed by the factory for your application. We supply the full data sheet with the quotation.

Frequently asked questions

When is a flat liner enough and when is a 3D liner needed?: A flat liner suffices for containers with a clear internal contour and free-flowing bulk. A 3D liner makes sense when residual discharge and freedom from folds are critical, for instance with liquids or high-value powders.
What does automatic length adjustment achieve?: It keeps liner length within tolerance even when web running varies. Without that correction small deviations add up over the bag length and cause scrap.
Are antistatic versions possible?: Yes, with suitable film types. For dust-explosion-prone bulk goods, dissipative properties must be separately verified via the film supplier.