Automated Radial Encapsulation for Slit Steel Coils & Metal Sheets
Eliminate manual steel banding and prevent catastrophic warehouse oxidation. We engineer heavy-duty eye-through (radial) stretch wrapping machines - often referred to as ring-type or orbital coil wrappers - tailored for steel service centers and slitting lines. Our systems execute perfect through-the-eye wrapping, holding massive coils upright while a motorized ring rotates to pass the film carriage through the coil ID. This creates a tight helical layer around the entire coil face and OD for complete circumferential protection. Featuring VCI anti-rust film and HDPE woven fabric integration, we secure slit steel coils, aluminum sheet rolls, and master metal coils at extreme speeds.
The Cross 600: Heavy Metal Encapsulation
The Challenge: Steel service centers slitting master coils into narrower bands face severe packaging bottlenecks. Manual steel strapping allows air, dust, and moisture to reach the metal, causing red/white rust and surface damage that destroys inventory. Meanwhile, attempting to manually feed plastic wrap through the eye of a razor-sharp, multi-ton steel coil is incredibly slow, dangerous, and physically exhausting for operators handling both eye-to-wall and eye-to-sky orientations.
The Solution: The Dynawrap Cross 600 utilizes automated radial core technology to execute a flawless through-the-eye wrapping sequence. It can act as a stand-alone, semi-automatic unit or tie directly into a fully integrated slit coil packaging line with conveyors.
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Extreme Weight Support & Integration: Designed to serve as the core of your packaging operations, the system supports massive payloads while maintaining a compact footprint. It easily integrates with downstream automatic strapping, weighing, labeling, and palletizing equipment.
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High-Speed Circumferential Protection: A motorized high-RPM ring passes seamlessly through the center bore, driving throughput of up to 100 coils/hour. Engineered with auto film cut/attach capabilities, the ring applies a mathematically precise film overlap, entirely sealing the sharp edges of the metal.
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Multi-Media Integration: The system easily applies heavy 2–5 mil polyethylene film and is fully compatible with simultaneously combining standard stretch film with rugged HDPE woven fabrics, compound paper, and critical VCI materials.
Need to wrap Master Steel Coils?
While the Cross 600 is the high-speed workhorse for slit coils, we engineer custom massive-scale radial wrappers capable of securing master metal sheets and aluminum rolls with Outer Diameters up to 1600mm and beyond. Contact our engineering team to spec a custom wrapper for your service center.
The Steel Processing Consumables Ecosystem
Raw steel, aluminum sheets, and slit coils are highly susceptible to moisture oxidation. Eliminating air and moisture from the outside of the package is critical to reducing red and white rust during flatbed transport and warehouse staging.
We strongly mandate deploying our VCI (Volatile Corrosion Inhibitor) Stretch Film with your radial wrapper. Offering complete VCI Paper & Stretch Film Compatibility, the wrapper applies the film through the eye of the coil, emitting rust-inhibiting vapors directly into the metal roll to eradicate moisture-related corrosion before the load reaches the stamping plant. Many steel service centers configure the machine to apply this VCI film simultaneously with an outer layer of HDPE woven fabric for extreme tear resistance.
Technical FAQ: Slit Steel Coils & Heavy Metal Roll Wrapping
How does the through-the-eye wrapping process mitigate the risk of red and white rust formation on slit steel coils during warehouse staging?
The radial wrapping system applies VCI (Volatile Corrosion Inhibitor) stretch film directly through the inner diameter (ID) of the coil. This creates a hermetically sealed, tight helical layer that continuously emits rust-inhibiting vapors, completely neutralizing moisture and atmospheric oxygen before oxidation can occur.
What is the kinematic throughput for high-tonnage slit coil lines, and how does the wrapper adapt to varying inner and outer diameters?
The Dynawrap Cross 600 utilizes a motorized high-RPM ring that achieves rotational speeds up to 50 RPM, delivering throughput rates of up to 100 coils per hour. The automated film carriage dynamically adjusts to varying coil geometries - handling master coils up to 1600mm in outer diameter - by passing seamlessly through the coil ID in either eye-to-wall or eye-to-sky orientations.
How does the radial wrapping automation eliminate the severe laceration hazards associated with manually threading film through the coil's inner diameter?
To ensure absolute EHS compliance, the equipment is engineered with an automated pneumatic mechanical clamping system paired with an auto film cut-and-attach mechanism. This allows the motorized carriage to autonomously drive the stretch film through the center bore, entirely removing the operator's hands from the razor-sharp steel flanges during the encapsulation cycle.
How does the radial coil wrapper integrate with downstream heavy-duty material handling and slitting line automation equipment?
The system acts as the centralized node of an automated slit coil packaging line, communicating directly with inline weighing, strapping, labeling, and palletizing stations. Utilizing enterprise PLCs (Siemens, Allen-Bradley, Beckhoff) and native OPC UA or EtherNet/IP connectivity, it executes string-based data exchanges to coordinate seamless load transitions without exposing operators to handling hazards.
Eliminate Manual Strapping & Coil Rust
The Cross 600 delivers transit-ready, rust-proof encapsulation in seconds, drastically reducing labor costs and eliminating material rejection. Tell us your maximum Coil O.D., I.D., maximum weight, and whether you require VCI anti-rust integration. Our engineering team will review your steel service center dimensions today.