By Glenn Phelps
For over a hundred years, machine parts composed of mechanical carbon have provided an alternative solution in applications where temperature and atmosphere conditions prevent the use of oil-grease lubricants.  Mechanical carbon materials contain graphite, which they rely on for their self-lubricating characteristics. 

Shin-Etsu Silicones of America, Inc. (U.S. subsidiary of Shin-Etsu Chemical Co. Ltd., Japan) recently integrated its KE2004-20 silicone LIMS (Liquid Injection Molding System) product into the production of a next-generation earplug for swimming and hearing protection. The Series’ low durometer (22 Shore A) and low-modulus produced a soft, flexible feel while its advanced physical properties delivered a high tear strength (207 ppi) which significantly reduced scrap and cycle time.

Eastern Plastics, Inc. has announced a custom Perfluoroalkoxy (PFA) manifold that is said to resist corrosion and heat in aggressive chemistry applications better than other materials. The multi-layer design uses a proprietary bonding process that allows internal fluid paths and chambers without the use of solvents, adhesives or gaskets.

ExxonMobil Chemical has introduced Santoprene TPV 8211-85 M350, a high-flow thermoplastic vulcanizate (TPV) that is said to provide a unique “comfort touch” and excellent surface qualities for automotive interiors while offering significant cost reduction opportunities.

Solvay Advanced Polymers has announced that KetaSpire PEEK (polyetheretherketone) and AvaSpire modified PEEK have achieved ISO 10993 biocompatibility compliance for use in limited-exposure medical devices and instruments. Based on rigorous biocompatibility testing, KetaSpire PEEK and AvaSpire modified PEEK resins are said to demonstrate no evidence of cytotoxicity, sensitization, irritation or acute systemic toxicity as defined by ISO 10993:1.

Goodfellow has introduced a range of MACOR material (rods, plates, bars and discs) and finished components that are precision-machined to customer specifications. The machinable engineering material is said to deliver the performance of a technical ceramic with the versatility of a high-performance plastic.

ExxonMobil Chemical has announced a Santoprene thermoplastic vulcanizate (TPV) exterior weatherseal grade for automotive and construction corner moldings. Used to join ethylene propylene diene monomer (EPDM) or TPV weatherseal profiles, Santoprene TPV B200 is said to provide excellent adhesion, versatile aesthetics, rubbery touch and critical performance at reduced cost.

Dynamet, a subsidiary of Carpenter Technology, has announced a line of small-diameter titanium machining bar that is said to impart very tight dimensional tolerances and exceptional size consistency and straightness, offers improved quality, higher productivity and cost savings to manufacturers making small, intricate, precision parts on Swiss-type automatic screw machines.

Toray Plastics America has developed a versatile co-extruded high-clarity matte polyester. The patent-pending Lumirror FAS matte polyester film, made with Toray's proprietary nanotechnology, allows industrial and consumer-goods brand owners to specify the exact level of gloss desired, while maintaining clarity. The film is also FDA compliant, tack sealable and can be printed on. Among the variety of end uses for the film are labels, including pressure-sensitive labels for a wide range of durable goods, from automobiles to chain saws.

The capacity of the FisherTech Injected Metal Assembly process has been increased 10-fold with the launch of the AM 51 system. A maximum shot volume of up to 500 g is said to allow for forming and joining of much larger component assemblies and end terminations. New design features, such as a stationary operating head, shot control and a two-stage melt pot, provide options for advanced automation up to full robotic operation.