Appliance Design - August 2007 - (Page 36)

JOINING FAILSAFE FUSING Emabond electromagnetic materials can be provided in many different shapes and configurations. Electromagnetic weld/bonding process for plastics solves design challenges. T by steven m. chookazian Steven M. Chookazian is general manager, Emabond Solutions, LLC, Norwood, N.J. 36 applianceDESIGN August 2007 here are many critical plastic-part assembly applications where the longterm integrity of the joint is absolutely essential, such as when the assembly must contain a liquid. Examples include various small household appliances, oral hygiene appliances, or parts for major appliances, such as a dishwasher arm or clothes washer pump assembly. Over the years, many manufacturers of such applications have achieved that desired assembly integrity by using the electromagnetic weld/bonding system developed by Emabond Solutions, Norwood, N.J., which offers a number of advantages over alternative methods such as adhesive bonding, heat staking, vibration, hotplate, or ultrasonic welding. Recently, Emabond has developed a new line of RF generators with flexible power-delivery systems. These power-delivery systems utilize a faster, higher-precision RF technology that delivers enhanced product and process reliability in plastic assemblies designed for demanding environments. The new RF power delivery system platform, along with other recent technical advancements, effectively eliminate or greatly reduce many of the perceived and real limitations of the Emabond process, thereby presenting many new application opportunities. How it works The Emabond process uses high-frequency induction energy coupled with conductive or electromagnetic materials to precisely deliver heat to a bond line to provide effective welding of virtually all thermoplastic materials. In the product development cycle, OEM design engineers work with Emabond engineers on the proper joint design for the process. Next, they work on designing the shape and thickness of the preform that will be placed into the joint. The preform contains the electromagnetic or conductive materials essential to the process. (See photo.) The materials are custom formulated to meet the needs of each application’s perforwww.applianceDESIGN.com http://www.appliancedesign.com

Table of Contents Feed for the Digital Edition of Appliance Design - August 2007

Contents Editorial Shipments/Forecasts News Watch A Reed Switch is Simople, yet Versatile, and Designers are Finding New Uses for this Time-Tested Technology A Novel Actuation and Sensing Technology can Register a Light Touch, but Resist Blows from a Hammer Tracing the Source of Noise is Made Easier with Noise Source Identification Methods Appliance Noise can be Annoying, but Designers have Many Material Choices to Help Rein in the Racket Nanocomposites are No Longer a Technology for the Future. These Plastic Materials are Already on the Job A New High-Strength, Low-Density Glass-Microsphere Additive can Improve Plastic Part and Molding Performance A New Electromagnetic Weld/Bonding Process Helps Ensure Long-Term Integrity of Joints in Plastic Parts Snap-Based Technology Eases Installation and Makes Products More Serviceable Two-Part Silicone Adhesives Provide a Rapid-Cure Alternative to Traditional One-Part Silicones Classified DesignMart Advertiser’s Index Association Report: GAMA

Appliance Design - August 2007

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