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1. (WO2017184867) METHOD OF MAKING AN ACOUSTIC AUTOMOTIVE HVAC AND AIS DUCT WITH A FIBER SLURRY

Pub. No.:    WO/2017/184867    International Application No.:    PCT/US2017/028639
Publication Date: Fri Oct 27 01:59:59 CEST 2017 International Filing Date: Fri Apr 21 01:59:59 CEST 2017
IPC: D21J 3/04
B60H 1/00
D21J 7/00
Applicants: TOLEDO MOLDING & DIE, INC.
Inventors: VORENKAMP, Erich James
SATARINO, Charles David
JAYAKUMAR, Karthik S.
DURAND, Christopher, Paul
ERMIE, Peter, Jr.
Title: METHOD OF MAKING AN ACOUSTIC AUTOMOTIVE HVAC AND AIS DUCT WITH A FIBER SLURRY
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.