RIM floor mats for heavy trucks.A sound-attenuating polyurethane polyurethane Any of a class of very versatile polymers that are made into flexible and rigid foams, fibres, elastomers (elastic polymers), surface coatings, and adhesives. elastomer elastomer (ĭlăs`təmər), substance having to some extent the elastic properties of natural rubber. The term is sometimes used technically to distinguish synthetic rubbers and rubberlike plastics from natural rubber. system can be molded into one-piece floor coverings for cab interiors of heavy-duty and long-haul trucks and other heavy equipment. The new development was a joint effort of Pittsburgh-based Bayer MaterialScience Bayer MaterialScience (BMS) is an independent subgroup within Bayer AG. It was created as part of the restructuring of Bayer AG from the former business group Bayer Polymers, with certain of its activities being spun off to Lanxess AG. and Durable Products, Inc. of Crossville, Tenn. This application uses Bayer's Bayflex XGT-2 filled PUR elastomer system, which offers an extended gel time that facilitates large-part molding, as well as high density for sound attenuation Loss of signal power in a transmission. Attenuation The reduction in level of a transmitted quantity as a function of a parameter, usually distance. It is applied mainly to acoustic or electromagnetic waves and is expressed as the ratio of power densities. . It is also said to provide a soft feel for improved driver comfort. Durable Products forms the floor coverings using a RIM process, which is said to offer a number of advantages over rubber sheet, which is typically used in this application. These include the ability to mold parts with deep draws and varying thickness within the part, which creates the opportunity to mold in logos, foot-tread ribbing, undercuts, lips, and additional sound adsorption adsorption, adhesion of the molecules of liquids, gases, and dissolved substances to the surfaces of solids, as opposed to absorption, in which the molecules actually enter the absorbing medium (see adhesion and cohesion). in specific areas. Such features are difficult to obtain in rubber sheet. Also, the RIM process allows for molding in features that help locate the part for assembly. Moreover, the pigmented PUR system gives a consistent color through the thickness of the floor covering that will not show wear, while rubber mats develop visible worn spots. Bayer: (412) 777-2000 * www.bayermaterialscience.com [ILLUSTRATION OMITTED] |
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