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Kastalon Engineered Mandrel Sleeves Provide Greater Productivity, Profitability

Kastalon brings 50 years experience in coil processing to the task of engineering a new offering of application-specific, proprietary formulated polyurethane mandrel sleeves, filler rings and filler plates. These products are designed to adapt the mandrel to handle coils with larger ID’s and addresses the problems of damage from creasing, scratching and marring at mills, service centers, toll processors and fabricators alike. Such damage is expensive for any coil handling operation, especially when the metal is prepainted or must maintain optimum cosmetic surface integrity. By the use of Kastalon mandrel sleeves, filler rings or filler plates on the uncoiler or recoiler, the inside wraps on coils are protected from metal to metal contact. More finished material is produced or usable, as a result.

Mandrel sleeves are custom designed with engineered surface hardnesses and grooved or smooth finishes, depending on the particular application. Full sleeves are usually recommended for the recoilers, while filler rings and filler plates are more often utilized for uncoilers.

In use, the proprietary chemistry of the Kastalon Polyurethane material withstands the stress caused by the weight of the coil, then reforms when the mandrel is collapsed back to the rest position, owing to the inherent memory of the Kastalon engineered material. With other materials now on the market, sleeves will often sag due to memory loss and the resulting gap can cause significant coil damage. Correspondingly, additional labor and line downtime result from this condition, as realignment of the coil, sleeve and mandrel is needed. Through the true and precise sizing of the mandrel sleeve, combined with the proper material hardness and surface texturing, a Kastalon sleeve can last up to 10 times longer than rubber, fiber or even other commodity type polyurethane products, according to company research, available on request.

Kastalon mandrel sleeves are non-marring, cut-resistant, abrasion-resistant and offered for friction fit, requiring a separate “keeper”, or bolt-on installation. Company engineers consult customers on the amount of lubricant, cleaning solution or other coating chemistries present in the process, as this will determine the particular formulation selected. Furthermore, Kastalon offers these mandrel sleeves in a wide variety of grooved or soft surface finishes to meet the specific tension and pressure requirements of a processor’s uncoil/recoil apparatus. Special dual-durometer sleeves are also available for mills and processors where “head-in” damage is often encountered.

For most uncoilers, Kastalon filler rings or filler plates can provide the optimum performance for the tension, pressure and metal contact requirements typically present.

The design process for Kastalon mandrel sleeves can begin with a visit to the company’s website, www.kastalon.com, for completion of a needs assessment questionnaire. Detailed information is gathered on this form, allowing the Kastalon engineers to calculate the best sleeve design and chemical composition to suit the job.

For more information on these products, please contact Kastalon, Inc. at 708/389-2210 or visit www.kastalon.com

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