Appliance Design - August 2007 - (Page 38)

JOINING Static to dynamic Previously, Emabond RF Power supply delivery was considered as a static process — similar in many ways to other forms of plastic welding such as ultrasonic, laser, hotplate and vibration. Parts were generally held stationary in a fixture while energy was applied either via friction or external thermal sources. The advent of the flexible power-delivery system has allowed parts to be moved while under pressure within a fixture while the RF energy is uniformly applied, making it now a dynamic process. Two options are possible: the power source can travel with the assembly, or the assembly can be moved past a fixed RF power source. This allows the non-contact, non-violent application of energy to a wider range of part geometries. For example, a system was recently designed to perform mul- Predictable Controlled Bond-line Heating Induction Heating uses the interaction of High Frequency Electromagnetic Field Strength & Susceptors to generate Heat on Command + Electromagnetic High Frequency 13.56 Mhz Susceptor Particles FE - SS - Ceramic Polymer PP - PE - PA - PC …. Hi-temp materials Controlled Heat @ Bond- line Fig 2. Conceptual illustration showing how heat is produced at bond line. tiple welds sequentially to assemble a high-pressure vessel. The part is transported under pressure during the assembly process to sequentially weld an upper and a lower end cap to create a high perfor- mance pressure tank. This system readily adapts to accommodate a wide range of tank sizes. Design flexibility The Emabond Process is designed to meet a broad range of plastic assembly challenges from product design to the manufacturing floor. Successful projects using Emabond require optimization in three areas: 4Application design for components, joint design, and material selection. 4Emabond material formulation, the material configuration, and assembly insertion procedure. 4Equipment design and integration. All three aspects must be working in harmony to provide optimal performance of the process. The use of higher performance thermoplastics have created assembly application challenges that include: 4Assemblies with high structural loading, often using materials with a high content of glass reinforcements. 4Vessels with high internal pressures and long term cycling. 4Complex assemblies having internal metal components or sensitive electronics. 4The need for continuous welding of sheets and films. The pressure vessel joint photo exemplifies some of those points and demonstrates how recent advancements let designers solve a difficult combination of design challenges. The Emabond RF generators with flexible power-delivery systems offer product manufacturers a highly efficient, compact, easy-to-integrate source of induction welding power for a wide variety of process applications. The highly reliable power supplies enhance process flexibility, deliver a wide operating power range for optimized process control, ensure high process repeatability, and improve throughput. The Emabond process should be considered by any manufacturer who must produce a high-value, failureproof, plastic assembly, and by manufacturers whose assemblies contain delicate components contained within a plastic structure or vessel. < For more information, enter number . . 318 Or email: schookazian@emabond.com www.applianceDESIGN.com For more Information Enter 111 38 applianceDESIGN AD08074Zett.indd 1 August 2007 7/18/07 2:00:53 PM http://www.americanzettler.com http://www.americanzettler.com http://www.americanzettler.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

For optimal viewing of this digital publication, please enable JavaScript and then refresh the page. If you would like to try to load the digital publication without using Flash Player detection, please click here.