Liner types we carry

Tube liner

The most common FIBC liner configuration. A simple polyethylene tube inserted into the bag and tied off at the top spout or duffle. Available in 3 mil, 4 mil, and 6 mil gauges. Provides a moisture and contamination barrier for products that do not require a form-fit or sealed construction. Loose fit allows easy insertion and removal.

Fitted liner

A liner shaped to match the interior dimensions of the FIBC — form-fit construction prevents the liner from collapsing into the product during discharge and ensures consistent, clean product flow through spout bottoms. Preferred for food grade, pharmaceutical, and moisture-sensitive applications where product contact with the liner must be controlled.

Baffled liner

Designed for use inside baffle bag FIBCs. The liner panels are cut and shaped to align with the internal baffle panels of the bag, maintaining a square profile and preventing the liner from bunching or restricting product flow. Used in high-volume food and agricultural programs where baffle bags are the standard container.

Static control liner

Conductive or dissipative polyethylene liners for use with Type C and Type D FIBCs in electrostatic-sensitive applications. Standard PE liners are non-conductive and can defeat the static protection of both Type C and Type D bags — static control liners maintain the electrostatic performance of the bag system throughout filling and discharge. Required for all ESD-protected FIBC applications.

Foil liner

Multi-layer laminated foil liners for products that require protection from light, oxygen, and moisture — including light-sensitive chemicals, pharmaceutical actives, specialty food ingredients, and high-value materials that degrade under exposure. Provides the highest level of barrier protection available in an FIBC liner.

Flexible films & pallet covers

In addition to FIBC liners, we supply a range of flexible film products including stretch wrap film, ventilated film, net film, hand wrap, and machine wrap for pallet unitization. Pallet covers in standard and custom dimensions for weather and dust protection during outdoor storage and transit.

Why liner selection matters

The wrong liner can defeat the purpose of the bag. A few common examples:

• A standard PE liner in a Type C or Type D FIBC eliminates the bag's static protection — a static control liner is required

• A loose tube liner in a spout-bottom FIBC can collapse into the spout and restrict or block discharge — a fitted liner prevents this

• An unlined food grade FIBC still meets construction standards, but certain sensitive food products require a food-contact PE liner as an additional contamination barrier

• Foil liners are the only option for light-sensitive or oxygen-sensitive products — PE liners provide no barrier against light or gas permeation

Getting the liner right is as important as getting the bag right. Our team helps buyers match liner type, gauge, and configuration to their specific product and process before the first order ships.

Specifications

• Standard gauges: 3 mil, 4 mil, 6 mil polyethylene

• Configurations: tube, fitted/form-fit, baffled, static control, foil

• Food grade: FDA 21 CFR compliant PE liners available

• Static control: conductive and dissipative liner options for Type C and Type D FIBCs

• Foil: multi-layer laminated construction — barrier ratings available on request

• Closure options: tie-off, heat seal, zipper top options

• Custom sizing available to match any FIBC dimension

• Flexible films: stretch wrap, ventilated film, net film, pallet covers

Why plant managers and QC teams choose Capro for liners

• Matched to your bag — we supply liners specifically matched to the FIBC configurations we carry, so gauge, dimension, and construction are correct the first time

• In-stock availability — standard PE liners and common specialty liners ship same day from our US warehouses

• Specialty liner expertise — food grade, static control, and foil liners require specific selection criteria. Our team guides buyers through the right specification for their application

• No minimums on standard sizes — order what you need without committing to a full pallet

• Three US warehouse locations — Los Angeles, Dallas, and New Hampshire for fast delivery to any region

Contact Capro Industries to request liner samples, specifications, or a quote. We work with plant managers, QC supervisors, and procurement teams to match the right liner type, gauge, and configuration to every FIBC application — from standard moisture protection to food grade, anti-static, and foil barrier requirements.