Materials . . . RUBBERS & ELASTOMERS

Top Product

• First of several new grades
• No preheating insert or substrate

Overmolding thermoplastic elastomer.

This product is the first of the new J*Bond elastomers that -- according to company studies -- improves internal bond strength to unfilled Nylon 6 over competitive resins. The new resin offers designers the ability to bind directly to nylon without exotic adhesive systems and pre-heating the nylon. The company will soon announce additional J*Bond resins, including overmolding grades for ABS, polycarbonate and ABS-polycarbonate blends with hardness ranges from 50A Shore hardness to 75A. The major benefit to OEM designers is the ability to manufacture a hard plastic product with bonded components that have a soft touch and feel. The elastomers are highly colorable, have resistance to heat aging and chemicals, and require no undercuts in tooling or the use of expensive elastomer systems to produce tough compliant bonds. J*Von, Leominster, MA.

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KRATON polymers. UK bicycle manufacturer Orange Mountain Bikes chose KRATON to improve the grip and shock absorbency of their bike grab-handle grips. The polymers are easy to process in economical thermoplastic processing methods, have good electrical properties and are reprocessable. They improve impact toughness of plastics and shrink characteristics of polyester thermosets. Other applications include modified asphalts, polymer modification, adhesives and more. Shell Chemicals, Houston, TX. http://www.kraton.com

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Glow-in-the-dark compounds. These precolored compounds come in a wide range of pastel colors such as peach, pink, blue, cream, and green, displaying daylight colors that differ from their color in darkness. The combination of phosphorescent pigments can be compounded with elastomers, acrylic, polycarbonate, ABS and polypropylene. Applications include electronic and consumer goods, safety equipment, signage and more. RTP Company, Winona, MN. http://www.rtpcompany.com 

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Microcellular foam urethane elastomers. Durethane M is a flexible urethane foam ideal for use in business machine components like postal meters, low-volume feed rollers and actuator pads, where parts must endure repeated compression cycles. The product is mechanically mixed, self-cleaning and non-glazing. Its uniform cell size provides excellent compression set, which allows components to return to their original shape after being compressed. Mearthane Products Corp, Cranston, RI. http://www.mearthane.com

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Polyurethane skins. ULTRA-THANE 5270 is a flexible, aromatic polyurethane skin for post-finish and in-mold applications over flexible foams. The 2-component, fast cure polyurethane elastomer with 70-75 Shore A hardness produces a soft vinyl-like feel on automotive and vehicle interior parts. According to the manufacturer, the liquid-applied product is specifically designed to produce an elastomeric skin for flexible polyurethane foams like ISOFOAM 1627-028F. Futura Coatings, Inc, St. Louis, MO. http://www.futuracoatings.com 

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Molding materials. VersaDamp 2000 TPEs are ideal as anti-shock and anti-vibration mounts for compactly designed devices with limited isolator sway space, such as pagers, cellular phones, laptops and other miniaturized mechanical/electronic components. Formulations can be adjusted to optimize damping performance, durometer or both. Durometers range from 35 Shore A to 75 Shore A and have broad energy-absorption capabilities. E-A-R Specialty Composites, Indianapolis, IN. http://www.earsc.com 

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UV-stable thermoplastic elastomers. These grades of Santoprene 8000 thermoplastic elastomer offer excellent ultraviolet stability and processing advantages. They are colorable and provide long-term performance for applications that are exposed to prolonged, direct sunlight. The grades are easy to process using injection molding, extrusion, blow molding or other melt processing techniques. Available in 60 and 70 Shore A durometers, they are non-hygroscopic. Advanced Elastomer Systems, Akron, OH. http://www.aestpe.com  

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