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RTP’s LT compounds are filled with glass spheres to achieve 5–10% lower mass with structural properties equivalent to standard glass-fiber-reinforced materials.

Stephen Moore

May 14, 2018

2 Min Read
New structural compounds from RTP are light and tough

Compounder RTP Co. has developed a series of light and tough (LT) thermoplastic compounds that weigh 5–10% less than typical filled compounds, but with equivalent mechanical properties and similar shrinkage values. The lightweighting effect is achieved through the incorporation of glass spheres.

Handheld, battery -operated tool is one of many possibilities that benefit from RTP LT Compounds, which provide equivalent properties to glass-fiber reinforced compounds, but at 5-10%  less weight.

According to company representatives, LT Compounds are the fastest and easiest way to accomplish weight reductions in parts molded with glass fiber reinforcement without compromising performance or requiring modifications to existing tools. “Our LT Compounds can be drop-in replacements without the cost burden associated with other options to reduce weight,” explains Jason Kafader, Structural Product Manager at RTP Company.

LT Compounds exhibit a dramatic difference in density and only a slight difference in tensile strength versus standard glass fiber reinforced material. Unlike chemical foaming agents, the density reduction provided by LT Compounds is not dependent on wall thickness; furthermore, aesthetically pleasing parts are achievable with LT Compounds, which is not always the case with chemical foaming. Further, since LT Compounds are often able to be used as a drop-in solution with existing tooling, the switch from other materials can be a smooth and economical transition.

 “LT Compounds from RTP Company are best used as lightweight alternatives when the goal is to minimize energy consumption or the amount of human effort required to use the product,” says Kafader. “This makes them an ideal material for handheld, battery-operated tools, sporting goods, handheld appliances, recreational vehicles, and other common markets for glass fiber-reinforced compounds that will benefit from reductions in weight.”

Tensile strength and density of light and tough compounds from RTP are favorable compared with standard glass-filled polypropylene (PP), nylon 66 and PBT (polybutylene terephthalate) materials.

About the Author(s)

Stephen Moore

Stephen has been with PlasticsToday and its preceding publications Modern Plastics and Injection Molding since 1992, throughout this time based in the Asia Pacific region, including stints in Japan, Australia, and his current location Singapore. His current beat focuses on automotive. Stephen is an avid folding bicycle rider, often taking his bike on overseas business trips, and is a proud dachshund owner.

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