KR20220061560A - 가볍고 얇은 흡음재, 및 이의 제조방법 - Google Patents
가볍고 얇은 흡음재, 및 이의 제조방법 Download PDFInfo
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- D01D5/08—Melt spinning methods
- D01D5/098—Melt spinning methods with simultaneous stretching
- D01D5/0985—Melt spinning methods with simultaneous stretching by means of a flowing gas (e.g. melt-blowing)
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Abstract
Description
도 2는 본 발명의 일 실시예에 따른 실시예 1 및 실시예 2의 흡음재와 비교예 3 및 비교예 4의 흡음재의 흡음성능을 나타낸 그래프이다.
도 3은 본 발명의 일 실시예에 따른 실시예 1 및 실시예 2의 흡음재와 비교예 5 및 비교예 6의 흡음재의 흡음성능을 나타낸 그래프이다.
도 4는 본 발명의 일 실시예에 따른 실시예 3의 흡음재와 비교예 7의 흡음재의 흡음성능을 나타낸 그래프이다.
| 구분 | 물성 | |
| 흡음 성능 | 형상 유지 | |
| 실시예2 | 0.71 | ○ (유리) |
| 비교예1 | 0.71 | X (불리) |
| 비교예2 | 0.60 | ◎ (매우 유리) |
| 구분 | 총 중량 (gsm) | 두께 (mm) | 흡음 성능 | 비고 |
| 실시예1 | 445 | 10 | 0.66(57% 향상) | (비교예3 대비) |
| 실시예2 | 445 | 10 | 0.71(53% 향상) | (비교예4 대비) |
| 비교예3 | 400 | 10 | 0.42 | - |
| 비교예4 | 400 | 10 | 0.46 | - |
| 구분 | 총 중량 (gsm) | 두께 (mm) | 흡음 성능 | 비고 |
| 실시예1 | 445(44% 절감) | 10 (50% 절감) |
0.66 (7% 상승) |
(비교예5 대비) |
| 실시예2 | 445(26% 절감) | 10 (50% 절감) |
0.71 (22% 상승) |
(비교예6 대비) |
| 비교예5 | 800 | 20 | 0.61 | - |
| 비교예6 | 600 | 20 | 0.58 | - |
| 구분 | 총 중량 (gsm) | 두께 (mm) | 흡음 성능 | 비고 |
| 실시예3 | 395 g(12% 절감) | 20 | 0.88 (10% 향상) |
(비교예7 대비) |
| 비교예7 | 450 g | 20 | 0.80 | - |
Claims (12)
- 저융점 섬유(Low melting fiber; LM), 및 멜트블로운 섬유(Melt blown fiber; MB)을 포함하는 표피층; 및
상기 표피층 상에 적어도 1면 이상에 위치하는 흡음층을 포함하는 흡음재. - 제1항에 있어서,
상기 표피층은, 상기 표피층 전체 100중량% 기준,
상기 저융점 섬유(Low melting fiber; LM) 10~50중량%; 및
상기 멜트블로운 섬유(Melt blown fiber; MB) 50~90중량%를 포함하는 흡음재. - 제1항에 있어서,
상기 저융점 섬유(Low melting fiber; LM)는 섬도가 3~5데니어(denier), 및 길이가 40~60mm인 것인 흡음재. - 제1항에 있어서,
상기 멜트블로운 섬유(Melt blown fiber; MB)는 평균 직경이 0.3~10μm인 것인 흡음재. - 제1항에 있어서,
상기 표피층의 중량은 30~300gsm인 것인 흡음재. - 제1항에 있어서,
상기 표피층의 두께는 0.1~2mm인 것인 흡음재. - 제1항에 있어서,
상기 섬유층은 폴리에틸렌 테레프탈레이트(Polyethylene terephthalate; PET), 및 폴리우레탄(Polyurethane)로 이루어진 군으로부터 선택된 1종 이상을 포함하는 흡음재. - 제1항에 있어서,
상기 표피층 및 상기 흡음층 사이에,
폴리프로필렌 수지(Polypropylene; PP), 폴리카보네이트 수지(Polycarbonate; PC), 폴리아미드6 수지(Polyamide6; PA6), 폴리아미드66 수지(Polyamide66; PA6), 폴리염화비닐 수지(polyvinyl chloride; PVC), 열가소성 올레핀 수지(Thermoplastic Olefin; TPO), 열가소성 탄성체(Thermoplastic Elastomer; TPE), 및 에틸렌 비닐아세테이트 공중합체(Ethylene Vinyl Acetate; EVA)로 이루어진 군으로부터 선택된 1종 이상을 포함하는 차음층을 더 포함하는 흡음재. - 제1항에 있어서,
상기 표피층 상에 폴리에스터 섬유 및 폴리프로필렌 섬유로 이루어진 군으로부터 선택된 1종 이상을 포함하는 스킨층을 더 포함하는 흡음재. - 멜트블로운 섬유(Melt blown fiber; MB)를 방사하는 단계;
상기 방사된 멜트블로운 섬유(Melt blown fiber; MB)에 저융점 섬유(Low melting fiber; LM)를 혼섬시켜 표피층을 제조하는 단계;
상기 표피층 상에 흡음층을 적층하는 단계; 및
상기 흡음층이 적층된 표피층-흡음층을 열압착하는 단계를 포함하는 흡음재의 제조방법. - 제10항에 있어서,
상기 멜트블로운 섬유(Melt blown fiber; MB)를 방사하는 단계는
방사온도 230~300℃, 및 방사압력 4~8psi에서 방사하는 것인 흡음재의 제조방법. - 제10항에 있어서,
상기 표피층을 제조하는 단계는
상기 멜트블로운 섬유(Melt blown fiber; MB)에 저융점 섬유(Low melting fiber; LM)를 혼섬시킨 섬유를 열압착하는 단계; 및
상기 열압착된 섬유를 커팅하는 단계를 포함하는 흡음재의 제조방법.
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| US17/503,795 US11999142B2 (en) | 2020-11-06 | 2021-10-18 | Light and thin sound-absorbing material and method of manufacturing same |
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| KR101643689B1 (ko) | 2014-11-11 | 2016-07-29 | 한양대학교 산학협력단 | 흡음재의 제조 방법 및 이를 포함한 흡음 구조체 |
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| JP5491232B2 (ja) * | 2010-02-23 | 2014-05-14 | 株式会社林技術研究所 | 車両用成形敷設内装材 |
| AU2014237612A1 (en) * | 2013-03-15 | 2015-11-05 | Gpcp Ip Holdings Llc | Nonwoven fabrics of short individualized bast fibers and products made therefrom |
| US9415728B2 (en) * | 2014-04-23 | 2016-08-16 | Hyundai Motor Company | Dash pad for vehicle |
| DE102015212719A1 (de) * | 2014-09-02 | 2016-03-03 | Hyundai Motor Company | Mehrlagiges, geräuschabsorbierendes, geräuschdämmendes und luftdurchlässiges Material |
| EP3115192B1 (en) * | 2015-07-10 | 2020-11-25 | Hyundai Motor Company | Multilayer dash isolation pad having superior formability and sound absorption performance |
| US10272595B2 (en) * | 2016-05-26 | 2019-04-30 | Milliken & Company | Moldable uncured nonwoven composite and molded cured composite |
| US10792870B2 (en) * | 2016-11-29 | 2020-10-06 | Milliken & Company | Process for forming a nonwoven composite |
| EP3558189B1 (en) * | 2016-12-20 | 2021-06-23 | The Procter & Gamble Company | Methods and apparatuses for making elastomeric laminates with elastic strands provided with a spin finish |
| US10611116B2 (en) * | 2018-05-17 | 2020-04-07 | Milliken & Company | Nonwoven composite |
| US20200290310A1 (en) * | 2019-02-01 | 2020-09-17 | Ruomiao Wang | Lightweight reinforced thermoplastic composite articles including bicomponent fibers |
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