JP2014184418A - 防水通気構造、防水通気部材及び防水通気膜 - Google Patents
防水通気構造、防水通気部材及び防水通気膜 Download PDFInfo
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Abstract
【解決手段】 内部空間22と、内部空間22と外部空間とを連通する開口部21とを備えた筐体20と、開口部21を塞ぐように配置された防水通気膜11とを備え、防水通気膜11が、フィラーを含有する第1延伸PTFE多孔質膜1と、フィラーを含有しない第2延伸PTFE多孔質膜2とを含む積層体であり、第1延伸PTFE多孔質膜1よりも内部空間22側に第2延伸PTFE多孔質膜2が位置するように防水通気膜11が配置されている、防水通気構造100、を提供する。
【選択図】図1
Description
内部空間と、前記内部空間と外部空間とを連通する開口部とを備えた筐体と、
前記開口部を塞ぐように配置された防水通気膜と、を備え、
前記防水通気膜が、フィラーを含有する第1延伸PTFE多孔質膜と、フィラーを含有しない第2延伸PTFE多孔質膜とを含む積層体であり、
前記第1延伸PTFE多孔質膜よりも前記内部空間側に前記第2延伸PTFE多孔質膜が位置するように前記防水通気膜が配置されている、防水通気構造、を提供する。
防水通気膜と、
前記防水通気膜の周縁部に接合された固定用部材と、を備え、
前記防水通気膜が、フィラーを含有する第1延伸PTFE多孔質膜と、フィラーを含有しない第2延伸PTFE多孔質膜とを含む積層体である、防水通気部材、を提供する。
フィラーを含有する第1延伸PTFE多孔質膜と、フィラーを含有しない第2延伸PTFE多孔質膜とを含む積層体である、防水通気膜、を提供する。
PTFEファインパウダー(ダイキン工業製F104)100重量部に液状潤滑剤(ノルマルデカン)20重量部及びカーボンブラック(東海カーボン製#4500)2重量部を加えたペースト状の混和物を作製し、ペースト押出により丸棒状に成形し、引き続き厚み0.2mmになるように圧延してPTFEシートを得た。次いで、150℃の乾燥炉内でPTFEシートから液状潤滑剤を取り除いた。さらに、PTFEシートをその長さ方向に280℃で5倍に延伸して1軸延伸フィラー含有PTFE膜を得た。また、カーボンブラックを配合しなかったことを除いては上記と同様にして、1軸延伸フィラー非含有PTFE膜を得た。
実施例と同様にして得た1軸延伸フィラー含有PTFE膜を1軸延伸フィラー非含有PTFE膜と積層および圧着する工程を省いたことを除いては、実施例と同様にしてフィラーを含有する延伸PTFE多孔質膜を得た。この単層の延伸PTFE多孔質膜の厚みは20μmであった。また、JIS L1092高水圧法により積層した延伸PTFE多孔質膜の耐水圧は10kPaであった。PTFE多孔質膜積層体に代えて上記から得た単層の延伸PTFE多孔質膜を用いたことを除いては実施例と同様にして、カーボンブラックの脱落試験を実施したところ、カーボンブラックの容器内部への脱落が確認された。
3 通気性支持材
11、12 防水通気膜
20 筐体
21 開口部
22 内部空間
30 固定用部材
31、32 両面粘着テープ
40 電子部品
50、51 防水通気部材
60 支持体(固定用部材)
61 支持部
64 挿入部
70 カバー
80 Oリング
100、110 防水通気構造
Claims (9)
- 内部空間と、前記内部空間と外部空間とを連通する開口部とを備えた筐体と、
前記開口部を塞ぐように配置された防水通気膜と、を備え、
前記防水通気膜が、フィラーを含有する第1延伸ポリテトラフルオロエチレン多孔質膜と、フィラーを含有しない第2延伸ポリテトラフルオロエチレン多孔質膜とを含む積層体であり、
前記第1延伸ポリテトラフルオロエチレン多孔質膜よりも前記内部空間側に前記第2延伸ポリテトラフルオロエチレン多孔質膜が位置するように前記防水通気膜が配置されている、防水通気構造。 - 前記積層体が、前記第1延伸ポリテトラフルオロエチレン多孔質膜と前記第2延伸ポリテトラフルオロエチレン多孔質膜とが直接積層されてなる2層膜を含む、請求項1に記載の防水通気構造。
- 前記積層体が、前記第1延伸ポリテトラフルオロエチレン多孔質膜と前記第2延伸ポリテトラフルオロエチレン多孔質膜とが直接積層されてなる2層膜のみからなる、請求項2に記載の防水通気構造。
- 防水通気膜と、
前記防水通気膜の周縁部に接合された固定用部材と、を備え、
前記防水通気膜が、フィラーを含有する第1延伸ポリテトラフルオロエチレン多孔質膜と、フィラーを含有しない第2延伸ポリテトラフルオロエチレン多孔質膜とを含む積層体である、防水通気部材。 - 前記積層体が、前記第1延伸ポリテトラフルオロエチレン多孔質膜と前記第2延伸ポリテトラフルオロエチレン多孔質膜とが直接積層されてなる2層膜を含む、請求項4に記載の防水通気部材。
- 前記積層体が、前記第1延伸ポリテトラフルオロエチレン多孔質膜と前記第2延伸ポリテトラフルオロエチレン多孔質膜とが直接積層されてなる2層膜のみからなる、請求項5に記載の防水通気部材。
- フィラーを含有する第1延伸ポリテトラフルオロエチレン多孔質膜と、フィラーを含有しない第2延伸ポリテトラフルオロエチレン多孔質膜とを含む積層体である、防水通気膜。
- 前記積層体が、前記第1延伸ポリテトラフルオロエチレン多孔質膜と前記第2延伸ポリテトラフルオロエチレン多孔質膜とが直接積層されてなる2層膜を含む、請求項7に記載の防水通気膜。
- 前記積層体が、前記第1延伸ポリテトラフルオロエチレン多孔質膜と前記第2延伸ポリテトラフルオロエチレン多孔質膜とが直接積層されてなる2層膜のみからなる、請求項8に記載の防水通気膜。
Priority Applications (6)
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JP2013062294A JP2014184418A (ja) | 2013-03-25 | 2013-03-25 | 防水通気構造、防水通気部材及び防水通気膜 |
US14/224,729 US20140283691A1 (en) | 2013-03-25 | 2014-03-25 | Waterproof ventilation structure, waterproof ventilation member, and waterproof air-permeable membrane |
KR1020140034498A KR20140116823A (ko) | 2013-03-25 | 2014-03-25 | 방수 통기 구조, 방수 통기 부재 및 방수 통기막 |
CN201410113802.3A CN104080305B (zh) | 2013-03-25 | 2014-03-25 | 防水通气结构、防水通气构件及防水通气膜 |
TW103111004A TW201501780A (zh) | 2013-03-25 | 2014-03-25 | 防水透氣構造、防水透氣構件及防水透氣膜 |
EP20140161531 EP2783844A1 (en) | 2013-03-25 | 2014-03-25 | Waterproof ventilation structure, waterproof ventilation member, and waterproof air-permeable membrane |
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EP (1) | EP2783844A1 (ja) |
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TW201501780A (zh) | 2015-01-16 |
KR20140116823A (ko) | 2014-10-06 |
CN104080305A (zh) | 2014-10-01 |
EP2783844A1 (en) | 2014-10-01 |
US20140283691A1 (en) | 2014-09-25 |
CN104080305B (zh) | 2020-11-06 |
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