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US 9,805,707 B2Granted
Sound absorbing and insulating material and method for manufacturing the same
AssigneeHyundai Motor Company
InventorKeun Young Kim
Life of this patent
Estimating the term…
Abstract
The present invention relates to a sound absorbing and insulating material and a method for manufacturing the same, more particularly to a sound absorbing and insulating material obtained by impregnating a polyimide binder into a nonwoven fabric formed of a heat-resistant fiber, having superior sound-absorbing property, flame retardancy, heat resistance and heat resistance, thus being applicable to parts maintained at high temperatures of 300° C. as well as at room temperature and moldability due to the use of the polyimide binder, and a method for manufacturing the same.
Claims26
A sound absorbing and insulating material comprising:
- a nonwoven fabric comprising 30-100 wt % of a heat-resistant fiber having a fineness of 1-15 denier;
- and
- a polyimide binder impregnated into the nonwoven fabric and present in the same layer as the nonwoven fabric, being distributed and attached on a yarn surface of the nonwoven fabric and maintaining a three-dimensional structure inside the nonwoven fabric by maintaining or further forming micro cavities of the nonwoven fabric.
Dependencies are inferred from the claim text.