Follow the bag profile
Define the body, top, and bottom dimensions on the liner drawing. Include internal bag features and installation needs.
Shaped around the bag
Form Fit Liners
A defined shape.
A coordinated package.
Match the liner body, top, bottom, and spouts to your FIBC and operating process. Bulk-Pack can help review the liner drawing with the bag, filling equipment, and discharge requirements.
Form fit liners • Shaped body • Filling and discharge spouts
Review the complete arrangementBody. Spouts. Attachment.
Body. Spouts. Attachment.
One liner specification.
Coordinate the liner’s shape and openings with the outer FIBC and the way your product moves through it.
Match filling & discharge
Review spout diameters, lengths, equipment connections, closures, and seals at both ends of the liner.
Review bag and liner together
Confirm the proposed liner against the bag drawing, attachment points, film specification, and intended handling process.
Start with the drawingThe details of the shape.
The details of the shape.
The needs of the process.
Bring your current specification or work through these requirements with our team.
Body shape & dimensions
Provide the outer bag drawing, liner body dimensions, top and bottom profile, and any baffles or internal features that affect fit.
Filling spout
Specify the liner spout diameter and length, filling-head connection, closure or seal, and filling temperature.
Discharge spout
Define the outlet diameter, length, closure, and how the liner should work with the bag and receiving equipment during discharge.
Attachment & installation
Identify loose or secured installation, tabs or other attachment details, and the insertion arrangement. Confirm these on the liner and bag drawings.
Film & product protection
Share film material, thickness and units, contact conditions, storage duration, and moisture or oxygen barrier requirements.
Process & documentation
Include the product, fill weight, handling conditions, electrostatic requirements, customer approvals, test needs, and expected usage.
The Bulk-Pack differencePractical FIBC knowledge.
Practical FIBC knowledge.
A liner reviewed as part of the package.
Our 45+ years of FIBC manufacturing and sales experience help connect the outer bag, liner, and operating requirements in one specification discussion.
Tell us what you use today and what you want to improve. Share filling, closure, storage, and discharge details so we can review the proposed configuration with you.
Liner dimensions and performance are application-specific. Bulk-Pack can help size and specify the liner for your bag, product, and equipment.
Knowledge for your operationExplore the options.
Explore the options.
Keep the specification connected.
Review the liner alongside the bag design and any additional product-protection needs.
FIBC construction
Explore bag body styles, filling and discharge options, and design requirements.
FIBC Constructions and Design ↗Other liner types
Review film liners for bags, boxes, and drums, plus barrier and electrostatic categories.
Explore Film Liner Types ↗Liner terminology
Review industry terms for form fit liners, tube liners, and installation methods.
FIBCA Terminology ↗Common questionsClear drawings.
Clear drawings.
A better fit discussion.
What makes a liner form fit?
A form fit liner is shaped to follow the FIBC’s body, top, bottom, and specified filling and discharge openings. Its dimensions and spout details are reviewed with the outer bag design.
How does it compare with a tube liner?
A tube liner is a straight tubular construction without shaped contours or spouts. A form fit design adds a defined shape and opening arrangement. The right choice depends on the bag, product, equipment, and operating requirements.
Will a form fit liner guarantee complete discharge?
Discharge performance needs review with your product and process. Share flow characteristics, outlet dimensions, receiving equipment, and any issues with residual material so the proposed design can be evaluated.
Can it be used with a baffle bag?
Provide the complete bag drawing, including internal baffles, and the proposed liner arrangement. We can review the shape, installation, product movement, and discharge requirements together.
Can we specify barrier or electrostatic properties?
Include these requirements at the outset. The film construction, liner properties, complete FIBC design, and operating environment need to be reviewed together, with the relevant documentation.
What do you need to quote a replacement liner?
Send the bag and liner drawings, film specification, body and spout dimensions, attachment details, product information, order quantities, and the changes you want to make.
Let’s talk packagingLet’s define your
Let’s define your
form fit liner requirements.
Share your FIBC drawing, liner body dimensions, top and bottom shape, filling and discharge spout details, film specification, attachment requirements, and quantity.