KR102508797B1 - 에어백용 직물 및 에어백 - Google Patents
에어백용 직물 및 에어백 Download PDFInfo
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- KR102508797B1 KR102508797B1 KR1020177031521A KR20177031521A KR102508797B1 KR 102508797 B1 KR102508797 B1 KR 102508797B1 KR 1020177031521 A KR1020177031521 A KR 1020177031521A KR 20177031521 A KR20177031521 A KR 20177031521A KR 102508797 B1 KR102508797 B1 KR 102508797B1
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- B60R21/00—Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
- B60R21/02—Occupant safety arrangements or fittings, e.g. crash pads
- B60R21/16—Inflatable occupant restraints or confinements designed to inflate upon impact or impending impact, e.g. air bags
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- D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
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- D03D15/20—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used characterised by the material of the fibres or filaments constituting the yarns or threads
- D03D15/283—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used characterised by the material of the fibres or filaments constituting the yarns or threads synthetic polymer-based, e.g. polyamide or polyester fibres
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- D03D15/30—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used characterised by the structure of the fibres or filaments
- D03D15/37—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used characterised by the structure of the fibres or filaments with specific cross-section or surface shape
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- D03D15/40—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used characterised by the structure of the yarns or threads
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- B60R21/02—Occupant safety arrangements or fittings, e.g. crash pads
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Abstract
Description
도 2는, 단사 섬유의 바람직한 단면 형상의 일례와, 당해 단사 섬유의 단면의 이형도의 구하는 방법을 나타내는 단면 모식도이다.
도 3은, 다른 단사 섬유의 단면 형상과, 당해 단사 섬유의 단면의 이형도의 구하는 방법을 나타내는 단면 모식도이다.
도 4는, 실시예 1-1에서 얻어진 단사 섬유의 단면을 나타내는 주사형 전자 현미경 사진이다.
도 5는, 비교예 1-3에서 얻어진 단사 섬유의 단면을 나타내는 주사형 전자 현미경 사진이다.
도 6은, 실시예 2-1에서 얻어진 단사 섬유의 단면을 나타내는 주사형 전자 현미경 사진이다.
도 7은, 비교예 2-3에서 얻어진 단사 섬유의 단면을 나타내는 주사형 전자 현미경 사진이다.
도 8은, 얀 확폭비의 측정 방법의 개략도이다.
12: 노즐에 설치된 토출 구멍에 내접하는 원
13: 노즐에 설치된 토출 구멍의 외측 테두리
21, 21': 단사 섬유의 섬유 축방향에 직교하는 단면에 나타나는 형상의 정점끼리를 연결한 직선의 선분의 수직 이등분선
22, 22': 수직 이등분선과 단사 섬유 단면의 외주와의 교점
31, 31' 외접원
32, 32': 내접원
33, 33': 단사 섬유의 단면에 나타나는 형상의 정점을 연결한 삼각형
34, 34': 단사 섬유의 단면 외주
61: 측정 샘플(섬유)
62: 직경 1㎝의 테플론(등록상표) 막대
63: 하중
64: 결속점
65: 일정 인장 장력을 인가했을 때의, 테플론(등록상표) 막대의 최상부에 위치하는 섬유의 폭 (a)의 측정점
66: 일정 인장 장력을 인가했을 때의 섬유 폭 (b)의 측정점
67: 측정 샘플과 동일한 실을 사용한, 하중과의 접합사
Claims (18)
- 기포를 구성하는 섬유가, 해직사의 얀 확폭비가 2.4 이상 3.5 이하이고, 단사 필라멘트의 단면 형상이 삼각형이며, 이형도가 1.3 내지 2.2인 섬유를 포함하는 것을 특징으로 하는 에어백용 직물.
- 제1항에 있어서, 기포를 구성하는 섬유가, 단사 필라멘트의 단면 형상이 삼각형이며, 이형도가 1.4 내지 2.0인 섬유를 포함하는, 에어백용 직물.
- 제1항에 있어서, 기포를 구성하는 섬유의 단사 필라멘트 단면의 외접원에 접하는 점을 연결한 삼각형을, 필라멘트 단면이 내포하는, 에어백용 직물.
- 제1항에 있어서, 섬유가 폴리아미드 섬유인, 에어백용 직물.
- 제1항에 있어서, 섬유의 섬도가 100dtex 내지 600dtex인, 에어백용 직물.
- 제1항에 있어서, 에어백용 직물의 통기도가 20kPa 차압하에서 0.1L/㎠/min 내지 0.7L/㎠/min인, 에어백용 직물.
- 제1항에 있어서, 하기 방법에 의해 측정되는 에어백용 직물의 접힘 후의 통기도가 20kPa 차압하에서 0.1L/㎠/min 내지 0.7L/㎠/min인, 에어백용 직물.
[직물의 접힘 후의 20kPa 차압하에서의 통기도]
직물의 폭 방향 양단부로부터 30㎝의 범위를 제외한 임의의 개소로부터 20㎝ 사방의 시험편을 잘라내고, 시험편을 섬유 축방향 (a)를 따라서 절반으로 접고, 계속해서 상기 섬유 축방향 (a)에 직교하는 섬유 축방향 (b)를 따라서 절반으로 접고, 다시 상기 섬유 축방향 (a)를 따라서 절반으로 접고, 상기 섬유 축방향 (a)에 직교하는 섬유 축방향 (b)를 따라서 절반으로 접어, 5㎝ 사방으로 접는다. 접힌 시험편의 전체면에 50N의 하중을 1분간 부여하고, 계속해서 20㎝ 사방으로 넓힌 상태에서 1분간 방치한다. 1회째의 접은 자국과 2회째의 접은 자국의 교점을 중심으로 하는 직경 10㎝의 원을 측정 부위로서 20kPa 차압하에서의 통기도를 측정한다. - 단면 형상이 삼각형이며, 이형도가 1.3 내지 2.2인 단사 섬유를 포함하고,
인열 강력이 120N 이상이며, 또한
20kPa 차압하에서의 통기도가 0.65L/㎠/min 이하인 것을 특징으로 하는 에어백용 직물. - 제8항에 있어서, 하기 방법에 의해 측정되는 상기 직물의 접힘 후의 20kPa 차압하에서의 통기도가 0.65L/㎠/min 이하인, 에어백용 직물.
[직물의 접힘 후의 20kPa 차압하에서의 통기도]
직물의 폭 방향 양단부로부터 30㎝의 범위를 제외한 임의의 개소로부터 20㎝ 사방의 시험편을 잘라내고, 시험편을 섬유 축방향 (a)를 따라서 절반으로 접고, 계속해서 상기 섬유 축방향 (a)에 직교하는 섬유 축방향 (b)를 따라서 절반으로 접고, 다시 상기 섬유 축방향 (a)를 따라서 절반으로 접고, 상기 섬유 축방향 (a)에 직교하는 섬유 축방향 (b)를 따라서 절반으로 접어, 5㎝ 사방으로 접는다. 접힌 시험편의 전체면에 50N의 하중을 1분간 부여하고, 계속해서 20㎝ 사방으로 넓힌 상태에서 1분간 방치한다. 1회째의 접은 자국과 2회째의 접은 자국의 교점을 중심으로 하는 직경 10㎝의 원을 측정 부위로서 20kPa 차압하에서의 통기도를 측정한다. - 제9항에 있어서, 상기 직물의 20kPa 차압하에서의 통기도에 대한 제9항에 기재된 방법에 의해 측정되는 직물의 접힘 후의 20kPa 차압하에서의 통기도의 변화율이 150% 이하인, 에어백용 직물.
- 제8항에 있어서, ASTM D 6478로 정의되는 수납성이 1200㎤ 내지 2400㎤이며, ASTM D 4032로 정의되는 강연도가 경사 방향, 위사 방향 모두 5N 내지 22N인, 에어백용 직물.
- 제8항에 있어서, 상기 직물을 구성하는 섬유의 총 섬도가 200dtex 내지 500dtex이며, 커버 팩터가 2300 이하인, 에어백용 직물.
- 제8항에 있어서, 상기 단사 섬유의 단면에 나타나는 삼각형의 정점끼리를 연결한 직선이 당해 단사 섬유 단면의 외주의 내측에 있는, 에어백용 직물.
- 제1항 내지 제13항 중 어느 한 항에 기재된 직물을 사용하는 것을 특징으로 하는 에어백.
- 제8항 내지 제13항 중 어느 한 항에 기재된 에어백용 직물의 제조 방법으로서,
멀티 필라멘트를 제직하는 공정,
제직한 생기를 자연 건조하거나, 혹은 20℃ 내지 190℃에서 열처리하는 공정을 포함하는 것을 특징으로 하는 에어백용 직물의 제조 방법. - 제8항 내지 제13항 중 어느 한 항에 기재된 에어백용 직물의 제조 방법으로서,
멀티 필라멘트를 제직하는 공정,
제직한 생기를 50℃ 내지 100℃의 물로 정련하는 공정, 및
정련 후의 생기를 100℃ 내지 150℃에서 열처리하는 공정을 포함하는 것을 특징으로 하는 에어백용 직물의 제조 방법. - 제8항 내지 제13항 중 어느 한 항에 기재된 에어백용 직물의 제조 방법으로서,
멀티 필라멘트를 제직하는 공정,
제직한 생기를 30℃ 내지 90℃의 물로 정련하는 공정, 및
정련 후의 생기를, 생기의 주행 방향의 오버피드율을 1.5% 내지 6.0%, 상기 주행 방향에 직교하는 방향의 오버피드율을 당해 직교 방향의 길이에 대하여 1.0% 내지 4.0%로 하고, 110℃ 내지 190℃에서 열처리하는 공정을 포함하는 것을 특징으로 하는 에어백용 직물의 제조 방법. - 삭제
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