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Reinforcing heavy cartons over 30kg before palletisation and carrier collection
Bundling and banding multiple boxes or products together for export despatch
Export consignments moving through multi-step handling chains where burst resistance reduces transit damage claims
Sealing on dusty or fibre-rich board surfaces where fast initial tack prevents lifted edges
Fixed dispenser benches running high daily volumes of heavy-duty carton sealing
Not for
UV-exposed outdoor or long-term external storage - UV resistance is not rated for this tape
Hand-tear stations without a cutter or heavy-duty dispenser — this tape does not tear cleanly by hand
Light to medium cartons where standard tape is the correct and more cost-effective specification
Applications requiring a completely smooth, invisible seal — the filament weave pattern remains visible on the finished carton
Key Features
Tear resistance in both directions - not just along the length
Standard tape resists tearing along its length but splits easily across it under lateral stress. The glass filaments in this tape are woven in two directions; along and across the backing - so it holds under the flex and impact that happens when heavy cartons drop off conveyor edges, shift in transit cages, or are stacked under load. On a goods-out bench moving 30kg+ cartons through multiple handling stages, that cross-direction strength is the difference between a seal that survives the chain and one that doesn't.
Synthetic rubber adhesive for immediate, lasting grip
The synthetic rubber hot melt adhesive (a contact adhesive that grips fast and holds firmly on paper and board) bonds on contact - faster than acrylic adhesive on the same application. It maintains grip through repeated handling cycles, which matters on export consignments touched many times before delivery. On a fast bench, that immediate tack also removes the risk of seals that look bonded but haven't fully seated; a common failure mode with slower-building adhesives on heavy cartons.
140 micron total thickness - body that stays flat under load
At 140 microns total thickness, this tape has enough body to lay flat across a seam without bridging or lifting at the edges. Thinner tapes flex and creep when a heavy carton is lifted, stacked, or vibrated in transit; the thicker construction resists that movement and keeps the seal centred over the seam. In practice, it runs cleanly through a heavy-duty dispenser and doesn't require the packer to fight the roll to keep it aligned.
Three widths for three different jobs
Available in 25mm, 48mm, and 75mm widths, all on a standard 76mm core. The 25mm width suits precision reinforcement strips and corner banding on irregular loads. The 48mm is the standard choice for heavy carton seam sealing in a single pass. The 75mm covers wide joins and bundling passes in one run — reducing passes, saving time, and eliminating the misaligned overlaps that create weak points on wide seams. All three widths fit standard heavy-duty dispensers without adapters.
Temperature stable through typical warehouse and logistics conditions
Once applied, this tape holds up to 60°C — covering warm goods-out areas, loading bays, and vehicle environments without the seal softening or releasing under heat. In cold storage and chilled despatch areas, apply with firm, deliberate pressure at ambient temperature before the carton enters the cold zone. Synthetic rubber adhesive makes its best initial bond at room temperature — applying in cold conditions reduces wet-out and increases the chance of edge lift under subsequent handling.
How to Get the Best Result
Select the right width before you start
Match the width to the job: 48mm for standard carton seam sealing, 75mm for wide reinforcement passes and bundling, 25mm for corner strips and precision banding. Applying a narrow strip where a wide pass is needed means doubling back with overlapping runs which creates weak joins and wastes time on a fast bench.
Square the carton and close the flaps fully
Synthetic rubber adhesive grips on contact and locks in whatever position the flaps are in. Take two seconds to square the box and press the flaps flush before the tape touches the surface. A carton sealed with misaligned flaps will open under load and no amount of extra tape fixes a structural gap.
Apply in one continuous pass with a dispenser
Start 25mm onto the carton face, run the full seam length in a single pull, and finish 25mm onto the opposite face. A heavy-duty dispenser controls tension and delivers a clean cut on 140 micron tape, hand-applying tape this thick without a dispenser produces uneven tension, ragged ends, and inconsistent seam coverage.
Press firmly along the full strip immediately
Synthetic rubber adhesive responds to pressure in the first few seconds after contact. Run the heel of your hand along the full strip length straight after laying it down — not just the ends. On dusty or textured board surfaces, a second deliberate pressure pass improves adhesion significantly and prevents the edge lift that teams misdiagnose as adhesive failure.
For bundling, cross-band rather than run a single strip
The most common bundling mistake is running one long strip down the centre of a stacked load and assuming it holds. On loads over 30kg, cross-banding — two strips at right angles — distributes handling stress across the full load rather than concentrating it at one central seam. A single central strip on a heavy bundle will peel from the edges inward under normal transit vibration.
When to Switch Tape
Choose cross woven filament tape when cartons are heavy, seams need reinforcement beyond standard tape capability, or loads are being bundled for export or multi-step handling. The cross-weave construction resists splitting under the lateral stress that standard tape cannot handle.
Choose low noise polypropylene acrylic tape when cartons are light to medium weight and routine seam sealing is all that's needed. Acrylic adhesive builds a stable bond over time and is the cost-effective workhorse for high-volume standard despatch benches where reinforcement is not required.
Choose hot melt polypropylene tape when your operation needs the fastest possible initial grab on standard cartons in a close-and-move workflow. Hot melt delivers more aggressive contact tack than acrylic — but it does not offer the cross-direction tear resistance of filament construction.
Choose strapping when loads exceed what any tape can unitise — palletised freight, very heavy export consignments, or loads going into long-distance logistics chains. Filament tape reinforces individual carton seams. Mechanical strapping unitises full pallet loads. They solve different problems and work best used together.
Frequently Asked Questions
What is cross woven filament tape?
Cross woven filament tape is a reinforced industrial tape used for sealing, bundling, and reinforcing heavy cartons in warehousing, export despatch, and logistics operations. It uses glass filaments woven in two directions through the backing to resist tearing and splitting under the load stress that splits standard polypropylene tape. It suits operations handling cartons over 30kg, export consignments, and any bundling job where seal failure in transit is not acceptable.
What's the difference between cross woven filament tape and standard tape?
Cross woven filament tape uses glass filaments woven into the backing in two directions, giving it tear resistance across the tape as well as along it — standard pp tape has no filament reinforcement and splits under lateral stress on heavy loads. The synthetic rubber adhesive in filament tape also grips faster on contact than the acrylic adhesive used in most standard PP tapes. Choose filament tape when cartons are heavy, loads are handled repeatedly, or a seal failure would result in transit damage and choose standard PP tape for routine sealing on light to medium cartons.
Do I need a dispenser for cross woven filament tape?
Yes - cross woven filament tape is not designed for hand tearing and requires a heavy-duty dispenser at every application station. All RAJA cross woven filament tape rolls use a standard 76mm core, compatible with heavy-duty hand and bench dispensers. Attempting to apply 140 micron filament tape without a dispenser produces uneven tension, inconsistent seam coverage, and ragged cut ends that lift at the edges.
Why is my filament tape lifting at the edges after application?
Edge lift on filament tape almost always comes from insufficient pressure on application rather than adhesive failure — synthetic rubber adhesive requires firm, deliberate contact pressure to fully seat into board fibres. Apply a firm heel-of-hand pressure pass along the full strip length immediately after laying it down, and check that the carton surface is dry and free from dust before sealing. If edge lift persists across multiple cartons, check dispenser tension — inconsistent tension causes the tape to bridge over the seam rather than bond flat to it.
What carton weight can cross woven filament tape handle?
Cross woven filament tape is rated for cartons over 30kg and is specifically constructed to handle the seam stress that builds on heavy loads during transit, stacking, and repeated handling. For very heavy freight or palletised loads, filament tape should be used alongside mechanical PP or PET strapping rather than as a standalone solution — tape reinforces individual seams, strapping unitises the full load. If your cartons regularly exceed standard despatch weights, check the board grade of your carton matches the payload before specifying tape alone as the closure method.
Can I use cross woven filament tape in cold storage or warm loading bays?
Cross woven filament tape holds up to 60°C once applied, covering warm goods-out areas, loading bays, and standard vehicle environments without the seal releasing under heat. In cold storage or chilled despatch environments, apply the tape at ambient temperature with firm pressure before the carton enters the cold zone — synthetic rubber adhesive makes its strongest initial bond at room temperature and loses wet-out when applied directly onto cold board. Below ambient application conditions, increase pressure on the initial pass and allow a short dwell time before the carton is handled.
How should I store cross woven filament tape and what is the shelf life?
Store rolls in their original packaging at 15–25°C with relative humidity up to 65%, away from direct sunlight and heat sources, for a shelf life of 12–24 months from manufacture. Poor storage is one of the most consistently misdiagnosed tape problems — rolls stored in damp, hot, or UV-exposed conditions arrive at the bench with reduced initial tack and inconsistent unwind that teams attribute to product quality rather than storage conditions. Keep rolls sealed in original packaging until use and rotate stock on a first-in, first-out basis to stay within shelf life.
What else should I use alongside cross woven filament tape for safer heavy shipments?
For heavy export consignments, pair cross woven filament tape with heavy-duty double wall cardboard boxes rated to the payload weight, PP or PET strapping for pallet unitisation, and pallet stretch film for load stability in transit. Add foam corner protectors or edge boards on cartons with fragile contents — filament tape secures the seam, but internal and external impact protection reduces damage from drops and stack pressure. See our Heavy Duty Cardboard Boxes, Strapping, and Pallet Stretch Film for compatible products across the full shipment chain.
