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The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Patent No.:

US 9498904 B1

PDFFull Text
Date of Patent:
Nov. 22, 2016

Filed:

May. 06, 2015

Molding process of highly heat-resistant sound absorbing and insulating materials

Applicants:

Hyundai Motor Company, Seoul, KR;

Kia Motors Corporation, Seoul, KR;

Inventors:

Keun Young Kim, Gyeonggi-Do, KR;

Won Jin Seo, Gyeonggi-Do, KR;

Jong Beom Seo, Seoul, KR;

Chi Man Cho, Gyeonggi-Do, KR;

Ki Dong Lee, Gyeonggi-Do, KR;

Su Nam Lee, Gyeonggi-Do, KR;

Assignees:

Hyundai Motor Company, Seoul, KR;

Kia Motor Corporation, Seoul, KR;

Attorneys:

Mintz Levin Cohn Ferris Glovsky and Popeo, P.C.

Peter F. Corless

Primary Examiner:

Forrest M Phillips

Int. Cl.
CPC ...
F02B 77/13 (2006.01); B29C 43/52 (2006.01); B29C 44/12 (2006.01); G10K 11/16 (2006.01); B29C 44/10 (2006.01); B29C 33/58 (2006.01); B29C 43/14 (2006.01); D04H 1/488 (2012.01); G10K 11/162 (2006.01); B60R 13/08 (2006.01); B29K 105/04 (2006.01); B29K 105/12 (2006.01); B29K 63/00 (2006.01); B29L 31/00 (2006.01); B29K 101/10 (2006.01);
U.S. Cl.
CPC ...
B29C 43/52 (2013.01); B29C 33/58 (2013.01); B29C 43/14 (2013.01); B29C 44/10 (2013.01); B29C 44/1266 (2013.01); B60R 13/0876 (2013.01); D04H 1/488 (2013.01); G10K 11/16 (2013.01); G10K 11/162 (2013.01); B29C 2043/141 (2013.01); B29K 2063/00 (2013.01); B29K 2101/10 (2013.01); B29K 2105/04 (2013.01); B29K 2105/12 (2013.01); B29K 2277/10 (2013.01); B29K 2995/0002 (2013.01); B29K 2995/0015 (2013.01); B29K 2995/0016 (2013.01); B29K 2995/0017 (2013.01); B29L 2031/721 (2013.01); Y10T 29/49572 (2015.01);
Abstract

The present invention relates to a method for molding a substantially improved heat-resistant sound absorbing and insulating material, which uses a sound absorbing material containing, based on 100 parts by weight of the sound absorbing material, an amount of about 20-80 parts by weight of a fiber material having a limiting oxygen index (LOI) of about 25% or greater and a heat resistance temperature of about 200° C. or greater and an amount of about 20-80 parts by weight of a thermosetting binder resin having a heat resistance temperature of about 200° C. or greater and is installed on an engine cylinder block and an automotive body panel above a muffler of a vehicle. The method includes: a releasing agent coating step of coating a releasing agent inside a heated die; a heated compression molding step of fixing a shape; and a cold compression step of stabilizing the shape. The substantially improved heat-resistant sound absorbing and insulating material molded according to the method can reduce the noise inside a vehicle by blocking radiated noise, which is generated from an engine and an exhaust system, from being transferred to the inside of the vehicle through an automotive body panel, can maintain its shape even under a high-temperature environment of about 200° C. or greater generated by the engine and the exhaust system, and can satisfy UL 94V-0 flame retardancy.

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