The present invention mixes different types of fibers, including PET superfine fibers, multi-lobal hollow yarns, conjugate hollow yarns, and LM fibers to manufacture a sound absorption sheet, thereby improving compression performances and sound absorption abilities through combination of different shapes and forms, and structures. In particular, the present invention mixes different types of fibers with different wt% ratios, thereby manufacturing and using a sound absorption material for a vehicle with various sound absorption abilities required at a location having the sound absorption material mounted through various sound absorption abilities and compression performances. Moreover, the present invention configures a spun bond nonwoven fabric with 20-40 gms of planar density or melt blown nonwoven fabric to be integrated with at least one surface of both surfaces of the manufactured sound absorption sheet. Accordingly, the present invention reinforces a structural rigidity of the sound absorption material to prevent the sound absorption material from being easily deformed or torn while maintaining a shape and a form of the sound absorption material such that the sound absorption material can be used for a long time.
PET 극세사, 다엽 중공사, 콘주 중공사, 그리고 LM 파이버 등 서로 다른 종류의 파이버를 혼합하여 흡음 시트를 제작함으로써, 서로 다른 형상과 모양 그리고 구조 등의 조합을 통해 압축성능과 흡음 성능을 향상할 수 있다. 특히, 다른 종류의 파이버를 다른 중량% 비율로 혼합함에 따라 다양한 흡음 성능과 압축 성능을 통해 흡음재가 장착되는 위치에서 요구되는 다양한 흡음 성능을 가진 자동차용 흡음재를 제작하여 사용할 수 있다. 또한, 이처럼 제작된 흡음 시트의 양쪽 면 중 적어도 한쪽 면에 면밀도가 20~40gms인 스펀본드 부직포 또는 멜트 블로운 부직포를 일체로 구성함으로써, 흡음재의 구조적 강성을 보강하여 흡음재의 형상과 모양을 유지하게 하면서도 쉽게 변형하거나 찢어지지 않아 오랫동안 사용할 수 있다.
PET SOUND ABSORPTION MATERIALS MADE OF SUPERFINE FIBERS FOR VEHICLES
자동차용 PET 극세사 흡음재
2023-05-09
Patent
Electronic Resource
Korean
IPC: | B32B LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM , Schichtkörper, d.h. aus Ebenen oder gewölbten Schichten, z.B. mit zell- oder wabenförmiger Form, aufgebaute Erzeugnisse / B60R Fahrzeuge, Fahrzeugausstattung oder Fahrzeugteile, soweit nicht anderweitig vorgesehen , VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR |
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