JPWO2020054050A1 - 自動車用吸音材 - Google Patents
自動車用吸音材 Download PDFInfo
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- JPWO2020054050A1 JPWO2020054050A1 JP2020546649A JP2020546649A JPWO2020054050A1 JP WO2020054050 A1 JPWO2020054050 A1 JP WO2020054050A1 JP 2020546649 A JP2020546649 A JP 2020546649A JP 2020546649 A JP2020546649 A JP 2020546649A JP WO2020054050 A1 JPWO2020054050 A1 JP WO2020054050A1
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- resin film
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- film layer
- core layer
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- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
- G10K11/00—Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
- G10K11/16—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
- G10K11/172—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using resonance effects
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R13/00—Elements for body-finishing, identifying, or decorating; Arrangements or adaptations for advertising purposes
- B60R13/08—Insulating elements, e.g. for sound insulation
- B60R13/0815—Acoustic or thermal insulation of passenger compartments
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
- B29D24/00—Producing articles with hollow walls
- B29D24/002—Producing articles with hollow walls formed with structures, e.g. cores placed between two plates or sheets, e.g. partially filled
- B29D24/005—Producing articles with hollow walls formed with structures, e.g. cores placed between two plates or sheets, e.g. partially filled the structure having joined ribs, e.g. honeycomb
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
- B29D99/00—Subject matter not provided for in other groups of this subclass
- B29D99/0089—Producing honeycomb structures
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- B32B15/04—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material
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- G—PHYSICS
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- G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
- G10K11/00—Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
- G10K11/16—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
- G10K11/162—Selection of materials
- G10K11/168—Plural layers of different materials, e.g. sandwiches
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Abstract
Description
第1の実施形態の自動車用吸音材は、図4及び図5に示すように、上述したコア層10と、その一方の面に設けられた非通気性の樹脂フィルム層40と、更にその外側に設けられた内表面層となる不織布層30とを備える。
第2の実施形態の自動車用吸音材は、図6に示すように、上述したコア層10と、その一方の面に設けられた第1の非通気性の樹脂フィルム層40aと、その他方の面に設けられた第2の非通気性の樹脂フィルム層40bと、更にこれらの外側にそれぞれ設けられた内表面層及び外表面層となる第1及び第2の不織布層30a、30bとを備える。なお、第1の実施形態と同様の構成については同様の符号を付し、ここでの詳細な説明は省略する。
第3の実施形態の自動車用吸音材は、図7に示すように、上述したコア層10と、その一方の面に設けられた非通気性の樹脂フィルム層40と、コア層10の非通気性の樹脂フィルム層40とは反対側の面に、複数の開孔を有する樹脂フィルム層50と、更にこれらの外側にそれぞれ設けられた内表面層及び外表面層となる第1及び第2の不織布層30a、30bとを備える。なお、第1及び第2の実施形態と同様の構成については同様の符号を付し、ここでの詳細な説明は省略する。
10 コア層
11 山部
12 谷部
13 側面部
14 底面部
15 山部接続面
16 谷部接続面
17 頂面
18 コア材料裏面
19 貫通孔
20 セル
21 閉鎖面
22 解放端
30 不織布層
40 非通気性の樹脂フィルム層
50 複数の開孔を有する樹脂フィルム層
55 孔
10 コア層
11 山部
12 谷部
13 側面部
14 底面部
15 山部接続面
16 谷部接続面
17 頂面
18 コア材料裏面
19 貫通孔
20 セル
21 閉鎖面
22 開放端
30 不織布層
40 非通気性の樹脂フィルム層
50 複数の開孔を有する樹脂フィルム層
55 孔
Claims (6)
- 筒状のセルが複数の列をなして配置されているコア層と、前記コア層の一方の面に接着された第1の非通気性の樹脂フィルム層とを備える複層構造の自動車用吸音材であって、前記第1の非通気性の樹脂フィルム層のヤング率E1(MPa)と、前記コア層よりも前記第1の非通気性の樹脂フィルム層側の層構造の面密度M1(g/m2)との関係が、0.5<E1/M1<21である自動車用吸音材。
- 前記第1の非通気性の樹脂フィルム層が、複数の異なるヤング率を有する材料で積層された構造を有する請求項1に記載の自動車用吸音材。
- 前記コア層の前記第1の非通気性の樹脂フィルム層が接着された面とは反対側の面に接着された第2の非通気性の樹脂フィルム層を更に備える請求項1又は2に記載の自動車用吸音材。
- 前記第2の非通気性の樹脂フィルム層のヤング率E2(MPa)と、前記コア層よりも前記第2の非通気性の樹脂フィルム層側の層構造の面密度M2(g/m2)との関係が、0.5<E2/M2<21であり、且つ、E1/M1とE2/M2との差の絶対値が0.8以上である請求項3に記載の自動車用吸音材。
- 前記コア層の前記第1の非通気性の樹脂フィルム層が接着された面とは反対側の面に接着された複数の開孔を有する樹脂フィルム層を更に備える請求項1又は2に記載の自動車用吸音材。
- 前記コア層の前記セルの各々が、一方の端に閉鎖面、他方の端に開放端を有し、前記セルの前記解放端によって前記セルの内部空間が外部と連通しており、前記セルの前記解放端が、前記コア層の両面において、隣接したセルの列が一列おきに配置されている請求項1〜5のいずれか一項に記載の自動車用吸音材。
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PCT/JP2018/034144 WO2020054050A1 (ja) | 2018-09-14 | 2018-09-14 | 自動車用吸音材 |
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JPWO2020054050A1 true JPWO2020054050A1 (ja) | 2021-08-30 |
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US (1) | US11872945B2 (ja) |
EP (1) | EP3852097A4 (ja) |
JP (1) | JP6925082B2 (ja) |
CN (1) | CN112639960A (ja) |
MX (1) | MX2021001715A (ja) |
WO (1) | WO2020054050A1 (ja) |
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JP6636471B2 (ja) * | 2017-02-16 | 2020-01-29 | 株式会社ニフコ | 吸音体、および、吸音構造 |
JP7235278B2 (ja) * | 2018-10-15 | 2023-03-08 | 岐阜プラスチック工業株式会社 | 吸音構造体及びその製造方法 |
JP7371600B2 (ja) * | 2020-10-05 | 2023-10-31 | トヨタ自動車株式会社 | ハニカムコアの製造方法 |
KR102463526B1 (ko) * | 2022-06-23 | 2023-01-18 | 주식회사 신양테크 | 조립식 매트블록 |
Citations (3)
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JPH10205352A (ja) * | 1997-01-24 | 1998-08-04 | Nissan Motor Co Ltd | エンジンカバー |
JP2013174849A (ja) * | 2012-01-23 | 2013-09-05 | Inoac Corp | 不燃性吸音パネル |
JP2016207989A (ja) * | 2015-04-28 | 2016-12-08 | 加川 清二 | 電磁波吸収吸音パネル |
Family Cites Families (27)
Publication number | Priority date | Publication date | Assignee | Title |
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JPS62225641A (ja) | 1986-03-25 | 1987-10-03 | 松下電工株式会社 | 吸音装置 |
JPH04303637A (ja) | 1991-03-30 | 1992-10-27 | Nippon Tokushu Toryo Co Ltd | 成形天井材 |
DE4408782A1 (de) | 1994-03-15 | 1995-09-21 | Fraunhofer Ges Forschung | Folien-Schallabsorber |
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JP6925082B2 (ja) | 2021-08-25 |
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MX2021001715A (es) | 2021-04-19 |
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US20210309164A1 (en) | 2021-10-07 |
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