Exploring Strapping Options with Redback Industries

Written by  Super User

Steel strapping is available in a variety of widths and thicknesses as well as variations in the grade of steel. Steel is used where minimal stretch is desired. Surface finishes for steel strap include: paint, paint and wax, bluing or zinc and wax. The wax is used to better transmit the tension around the bundle and for use with certain types of tensioners. Common applications include steel coils, bundles of metal, baling wire, bricks and pavers, and roll end-binding.

Unfortunately, there have been numerous accidents over the last few years and with the cost of steel strapping continuing to rise, it is time to replace steel banding with a superior and safer alternative.

Polypropylene strap (oriented or tensilized), also known as poly strapping,  is an economical material designed for light to medium duty unitizing, palletizing and bundling. It is available in various widths, thicknesses, and polymer variations (e.g., copolymers). Some polypropylene is embossed or printed.

This product offers high elongation at break but tends to have irrecoverable dead stretch with constant stress. What is not generally known to end users is that polypropylene strapping will lose about 50% of the applied tension within one hour, and that this tension loss is accelerated with increases in ambient temperature, consequently although suitable for packs with a degree of stored energy that will take up any relaxation that occurs in the strap, unacceptable strap slackness may occur after time if used on product that is ‘Solid’ such as bricks or concrete. Furthermore, polypropylene strapping is susceptible to UV degradation and can quickly degrade if left outside exposed to the elements.

Oriented or tensilized polyester and nylon strapping are stronger than polypropylene and are used as an alternative to steel strapping in the some industries.  Polyester provides excellent retained tension on rigid loads.  Its excellent recovery properties can help a load absorb impact without strap breakage, however polyester strapping can rupture easily on the corner of a load due to its low cross directional strength, especially under high tension.

Ensuring that you adequately secure cargo without damaging the export cargo container or goods’ being shipped is of the utmost importance. Redback strapping stays tight during transit and is ideal for securing heavy or irregular shaped loads inside of containers and rail cars, as well as onto vessels, barges and flat rack containers.

For more information please visit our site at www.redbackindustries.com

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