New plastics/metal hybrids introduced at K 2007 by A. Schulman eliminate soldering for electronic parts and also create shielded housings. “Conductor paths and contact points for connectors and cables can be injection molded simultaneously,” says Thilo Stier, innovation manager, told me at the packed Schulman stand this morning. Traditional lead frame techniques are replaced by the hybrids, called TinCo. They consist of 15 percent thermoplastics, such as nylon; 30 percent of a low-melting alloy such as tin; and 55 percent copper fiber. Nylon is overmolded with the low melting metal in a two-barrel injection molding machine using conventional tooling. Siemens is a development partner. Five other OEMs are also beta testing the technology under secrecy agreements. The process was demonstrated at the K Fair on an Arburg press. Due to the high loading of copper, the hybrid has excellent specific electrical conductivity—greater than 106 S/m. Most plastic and elastomers can be used as the matrix in the compound. Cycle times are short due to the material’s high thermal conductivity.
Ford and Unifi, maker of Repreve, will gather and recycle 2 million plastic bottles at CES and other shows for conversion into the Repreve seat fabric used in the 2012 Focus EV.
Thanks to embedded electronics, medical devices are getting smaller and smarter than ever. Pacemakers and implantable defibrillators are now able to call physicians. MRIs, CT scanners, and ultrasound machines are gaining mobility. And the venerable Band-Aid may soon be able to detect illnesses ranging from fevers to heart arrhythmias. On February 21, join Design News senior editor Charles Murray for a wide-ranging discussion, "Embedded Angles for Medical Products," which will explore the latest developments in medical electronics. The discussion will examine advances in medical device technology and offer an inside look at the embedded electronics behind it.
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