Method of making an acoustic automotive HVAC and AIS duct with a particle fiber slurry
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United States of America Patent
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May 28, 2019
Grant Date -
Oct 26, 2017
app pub date -
Apr 20, 2017
filing date -
Apr 20, 2016
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Abstract
Disclosed is a method to form arbitrarily shaped, uniform, lightweight, thermally insulating and acoustically absorptive automotive components with controllable density, thickness, porosity, and surface integrity. The method is based on natural cellulosic fibers such as those found in cardboard and paper and uses a thermoplastic fiber and particle slurry to form fusible components. The method produces components having the benefit of commercially available thermoformed fiber mats or open-cell extruded foam components with excellent acoustical properties, enhanced thermal insulation, and are light weight, which limits engine inefficiency, and the high cost of such products so as to allow large scale implementation.
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