Page 11 - MetalForming April 2009

Several methods help prevent movement during shipping. Belly and eye banding may be used individually or together. Belly banding wraps around the outside of the coil and helps prevent it from unrav- eling. Eye banding uses multiple bands that intersect the exterior and exterior cir- cumference of the coil. Eye banding pre- vents unraveling and telescoping.
Tape works well for situations where low banding strength is allowed. Steel or aluminum strapping provides maximum strength with simple disposal. Tape offers simple disposal and minimum thickness. Plastic strapping delivers medium strength and is slightly harder to dispose of.
Wrapping coils or using tarps will add further protection. Most plants use a fork- lift with padding on the forks and mast for in-plant transport. Good handling practices are desirable for best results in processing.
• Storage in weatherproof buildings is preferable; otherwise, keep the material clean and free of condensation.
• Avoid damage to coil edges.
• Handling devices should have padding. The value of prefinished metal coils
makes proper protection important. Var- ious cushioning materials can protect coils while they are moved. Polyurethane is one of the most effective materials, but felt as well as previously used conveyor belting also work well. To protect coils stored in inventory, use floor pads made of polyurethane or an equivalent cush- ioning material. Protective films may be applied at slitting or sheeting if required.
Coils often are lifted from turnstiles with a V-shaped coil car. The surface of that coil car should be made of a non- metallic material. Turnstiles with modu- lar round supports made of hardened steel for coil support help reduce damage.
To prevent damage during handling: do not sit coils on band-securing clips; try to limit the number of bands used, as each band increases the risk of denting; stocked coils should remain banded until processed; be careful when remov- ing bands to prevent snapback of the coil; and keep the clips off of the coil surface. National Coil Coating Association: 216/241-7333; www.coilcoatinginstitute.org
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