JP2008045569A - 水道配管およびその製造方法 - Google Patents
水道配管およびその製造方法 Download PDFInfo
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- JP2008045569A JP2008045569A JP2006218705A JP2006218705A JP2008045569A JP 2008045569 A JP2008045569 A JP 2008045569A JP 2006218705 A JP2006218705 A JP 2006218705A JP 2006218705 A JP2006218705 A JP 2006218705A JP 2008045569 A JP2008045569 A JP 2008045569A
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- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 claims description 12
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Abstract
【解決手段】同軸状に積層された内面ゴム層3と外面ゴム層5との間に補強層4を介装し、水道水の流通する面となる最内周面にナイロン樹脂層2を設け、このナイロン樹脂層2を形成するナイロン樹脂を無可塑配合とし、かつオリゴマー成分の含有率を1.0wt%以下にする。
【選択図】 図1
Description
JIS S 3200−7−2004「水道用器具−浸出性能試験方法」の附属書16(味の分析方法)および附属書17(臭いの分析方法)に準拠して評価を行ない、各試験体に95℃の温水(水道水)を封入して16時間、そのまま放置した後、温水を取り出し、取り出した温水を40℃に加熱して評価した。味については、評価者が無味であると感じた場合を○印で示し、水以外の味をやや感じた場合を△印で示し、水以外の味をはっきりと感じた場合を×印で示した。臭いについては、評価者が無臭であると感じた場合を○印で示し、水以外の臭いをやや感じた場合を△印で示し、水以外の臭いをはっきりと感じた場合を×印で示した。総合評価として味および臭いの両方について○印の評価の場合を○印で示し、それ以外の場合を×印で示した。
2 ナイロン樹脂層
3 内面ゴム層
4 補強層 4a 補強糸
5 外面ゴム層
6 カバー樹脂層
Claims (7)
- 同軸状に積層された内面ゴム層と外面ゴム層との間に補強層を介装し、最内周面をナイロン樹脂層とした水道配管であって、前記ナイロン樹脂層を形成するナイロン樹脂を無可塑配合とし、かつオリゴマー成分の含有率を1.0wt%以下とした水道配管。
- 前記ナイロン樹脂層の層厚を0.05mm以上1.0mm以下とした請求項1に記載の水道配管。
- 前記外面ゴム層の外周面にカバー樹脂層を設け、該カバー樹脂層の層厚を0.5mm以上3.0mm以下とした請求項1または2に記載の水道配管。
- 前記内面ゴム層のゴムを無可塑配合とした請求項1〜3のいずれかに記載の水道配管。
- 前記補強層を破断伸び15%以下の補強糸を編組角度49.4°以上52.2°以下の範囲で編組して形成し、かつ前記内面ゴム層を構成するゴム組成物の100%モジュラスを4.0MPa以上10.0MPa以下とした請求項1〜4のいずれかに記載の水道配管。
- 同軸状に積層された内面ゴム層と外面ゴム層との間に補強層を介装し、最内周面をナイロン樹脂層とした水道配管の製造方法であって、無可塑配合のナイロン樹脂を所定温度以上に加熱したメタノールに所定時間浸漬することによりオリゴマー成分を強制的に抽出して含有率を1.0wt%以下にし、このナイロン樹脂により前記ナイロン樹脂層を形成して、順次、該ナイロン樹脂層の外周面上に前記水道配管を構成する部材層を積層して成形品を成形した後、該成形品を加硫する水道配管の製造方法。
- 前記ナイロン樹脂層の外周面に前記内面ゴム層を積層する際に、濃度9.0〜17.0%のフェノール樹脂系接着剤で接着させる請求項6に記載の水道配管の製造方法。
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Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5779384A (en) * | 1980-11-05 | 1982-05-18 | Yazaki Corp | High pressure rubber hose for liquefied petroleum gas |
JP2002048273A (ja) * | 2000-08-01 | 2002-02-15 | Togawa Rubber Co Ltd | 高圧洗浄用ホース |
JP2002370273A (ja) * | 2001-05-30 | 2002-12-24 | Goodyear Tire & Rubber Co:The | 冷媒ホース |
JP2003154586A (ja) * | 2001-10-12 | 2003-05-27 | Atofina Chemicals Inc | 低沈殿ポリアミドを基材とするチューブ |
-
2006
- 2006-08-10 JP JP2006218705A patent/JP4697089B2/ja active Active
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5779384A (en) * | 1980-11-05 | 1982-05-18 | Yazaki Corp | High pressure rubber hose for liquefied petroleum gas |
JP2002048273A (ja) * | 2000-08-01 | 2002-02-15 | Togawa Rubber Co Ltd | 高圧洗浄用ホース |
JP2002370273A (ja) * | 2001-05-30 | 2002-12-24 | Goodyear Tire & Rubber Co:The | 冷媒ホース |
JP2003154586A (ja) * | 2001-10-12 | 2003-05-27 | Atofina Chemicals Inc | 低沈殿ポリアミドを基材とするチューブ |
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