JPWO2014109288A1 - 断熱シート、断熱材、断熱シートの製造方法、および断熱材の製造方法 - Google Patents
断熱シート、断熱材、断熱シートの製造方法、および断熱材の製造方法 Download PDFInfo
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Abstract
Description
特許文献1 特開昭58−78751号公報
(1)温度条件:77K(低温側)/300K(高温側)
(2)真空度:1×10−3Pa〜1×10−5Pa
(3)計測時間:断熱材の中間層温度が飽和(Δ1℃/1h)状態に達し、且つ、蒸発窒素ガス量の1時間当たり平均が飽和(Δ10cc/1h)状態に達してから24h
(4)計測間隔:20sec
(5)窒素ガスの流量測定に用いた機器:堀場エスペック製マスフローメーターSEF−405(標準流量レンジ500SCCM、流量精度±1%)
(6)窒素ガスの温度計測に用いた機器:チノー製 JIS1級 シース型K熱電対
(7)データロガー:KEYENCE製NR−1000
102 樹脂層
104,106 金属層
200 不織布シート
300 断熱シート
302 貫通孔
303 開口
304 突出部
305 突出部
306 延長部
307 他の貫通孔
400 断熱材
H1 貫通孔の長軸の長さ
H2 貫通孔の短軸の長さ
Claims (25)
- 熱伝導を抑制する第1熱伝導抑制層と、
前記第1熱伝導抑制層の一方の面側に配置され、輻射熱を反射する第1輻射熱反射層と、
前記第1輻射熱反射層の前記第1熱伝導抑制層が積層される面と反対の面より突出している、少なくとも表面に樹脂を含む突出部と
を備える断熱シート。 - 前記第1熱伝導抑制層は、前記樹脂を含む、請求項1に記載の断熱シート。
- 前記断熱シートは、前記第1輻射熱反射層の前記第1熱伝導抑制層が積層される面と反対の面上に開口を有し、
前記突出部は、前記開口の縁に沿って形成されている、請求項1または請求項2に記載の断熱シート。 - 前記開口は、前記第1輻射熱反射層および前記第1熱伝導抑制層を貫通する貫通孔である、請求項3に記載の断熱シート。
- 前記断熱シートは、前記第1輻射熱反射層の前記第1熱伝導抑制層が積層される面と反対の面上の前記開口とは異なる位置に、前記第1輻射熱反射層、および前記第1熱伝導抑制層を貫通する他の貫通孔をさらに有する、請求項3または請求項4に記載の断熱シート。
- 熱伝導を抑制する第1熱伝導抑制層と、
前記第1熱伝導抑制層の一方の面側に配置され、輻射熱を反射する第1輻射熱反射層と、
前記第1熱伝導抑制層の他方の面側に配置された第2熱伝導抑制層と、
前記第1輻射熱反射層の前記第1熱伝導抑制層が積層される面と反対の面より突出している、少なくとも表面に樹脂を含む突出部と
を備え、
前記第1輻射熱反射層は、前記第1熱伝導抑制層が積層される面と反対の面上に開口を有し、
前記突出部は、前記開口の縁に沿って形成されている、断熱シート。 - 熱伝導を抑制する第1熱伝導抑制層と、
前記第1熱伝導抑制層の一方の面側に配置され、輻射熱を反射する第1輻射熱反射層と、
前記第1熱伝導抑制層の他方の面側に配置された第2輻射熱反射層と、
前記第2輻射熱反射層の前記第1熱伝導抑制層が積層される面と反対の面側に配置された第2熱伝導抑制層と、
前記第1輻射熱反射層の前記第1熱伝導抑制層が積層される面と反対の面より突出している、少なくとも表面に樹脂を含む突出部と
を備え、
前記第1輻射熱反射層は、前記第1熱伝導抑制層が積層される面と反対の面上に開口を有し、
前記突出部は、前記開口の縁に沿って形成されている、断熱シート。 - 前記開口は、前記第1輻射熱反射層、前記第1熱伝導抑制層、第2輻射熱反射層および前記第2熱伝導抑制層を貫通する貫通孔である、請求項7に記載の断熱シート。
- 前記突出部は、前記貫通孔の内壁に沿って延長し、前記第1熱伝導抑制層と前記第2熱伝導抑制層とを接合する接合部を有する、請求項8に記載の断熱シート。
- 前記断熱シートは、前記第1輻射熱反射層の前記第1熱伝導抑制層が積層される面と反対の面上の前記開口とは異なる位置に、前記第1輻射熱反射層、前記第1熱伝導抑制層、第2輻射熱反射層および前記第2熱伝導抑制層を貫通する他の貫通孔をさらに有する、請求項8または請求項9に記載の断熱シート。
- 前記第1熱伝導抑制層は、樹脂層を有し、
前記第2熱伝導抑制層は、樹脂繊維を含む不織布層を有する、請求項7から請求項10のいずれか1つに記載の断熱シート。 - 前記突出部は、前記樹脂層および前記不織布層のそれぞれの材料の混合物で形成されている、請求項11に記載の断熱シート。
- 前記突出部は、前記不織布層に形成された空隙に入り込まない形状または大きさである、請求項11または請求項12に記載の断熱シート。
- 熱伝導を抑制する第1熱伝導抑制層と、
前記第1熱伝導抑制層の一方の面側に配置され、輻射熱を反射する第1輻射熱反射層と、
前記第1熱伝導抑制層に含まれる樹脂が融解して、前記第1熱伝導抑制層の他方の面、または前記第1輻射熱反射層の前記第1熱伝導抑制層が積層される面と反対の面上に、堆積することで形成された、少なくとも表面に前記樹脂を含む突出部と
を備える断熱シート。 - 前記第1熱伝導抑制層の他方の面側に配置された第2輻射熱反射層と、
前記第2輻射熱反射層の前記第1熱伝導抑制層が積層される面と反対の面側に配置され、樹脂繊維を含む不織布層を有する第2熱伝導抑制層と
をさらに備え、
前記突出部は、前記樹脂に加えて前記樹脂繊維が融解して、前記第1輻射熱反射層の前記第1熱伝導抑制層が積層される面と反対の面上に、堆積することで形成されている、請求項14に記載の断熱シート。 - 前記第1輻射熱反射層は、前記第1熱伝導抑制層が積層される面と反対の面上に開口を有し、
前記突出部は、前記開口の縁に沿って形成されている、請求項15に記載の断熱シート。 - 前記開口は、前記第1輻射熱反射層、前記第1熱伝導抑制層、第2輻射熱反射層および前記第2熱伝導抑制層を貫通する貫通孔である、請求項16に記載の断熱シート。
- 前記突出部は、前記樹脂および前記樹脂繊維が融解することで形成され、前記貫通孔の内壁に沿って延長し、前記第1熱伝導抑制層と前記第2熱伝導抑制層とを接合する接合部を有する、請求項17に記載の断熱シート。
- 前記突出部は、前記不織布層に形成された空隙に入り込まない形状または大きさである、請求項15から請求項18のいずれか1つに記載の断熱シート。
- 請求項1から請求項19のいずれか1つに記載の断熱シートを、前記突出部を挟んで複数積層することにより形成された断熱材。
- 複数の前記断熱シートは、第1貫通孔を有する第1断熱シートと、前記第1断熱シートに対向して配置され、第2貫通孔を有する第2断熱シートとを含み、
前記第1貫通孔と前記第2貫通孔とは、前記複数の断熱シートの積層方向において、重ならない位置に設けられている、請求項20に記載の断熱材。 - 熱伝導を抑制する第1熱伝導抑制層と、前記第1熱伝導抑制層の一方の面側に配置され、輻射熱を反射する第1輻射熱反射層とを有する積層シートを備える断熱シートの製造方法であって、
前記第1熱伝導抑制層に含まれる樹脂を融解させることで前記積層シートの少なくとも一方の面上に前記樹脂を堆積させることにより、前記少なくとも一方の面より突出した、少なくとも表面に前記樹脂を含む突出部を形成する工程を含む、断熱シートの製造方法。 - 前記工程において、前記積層シートの前記少なくとも一方の面に開口を形成し、かつ前記突出部を前記開口の縁に沿って形成する、請求項22に記載の断熱シートの製造方法。
- 前記積層シートは、前記第1熱伝導抑制層の他方の面側に配置された第2輻射熱反射層と、前記第2輻射熱反射層の前記第1熱伝導抑制層が積層される面と反対の面側に配置された第2熱伝導抑制層とをさらに有し、
前記第2熱伝導抑制層は、樹脂層を有し、
前記工程において、前記第1輻射熱反射層、前記第1熱伝導抑制層、および前記第2輻射熱反射層が積層された第1シートと前記第2熱伝導抑制層を含む第2シートとを重ねた状態で、前記第1シートの前記第2シートが積層される面と反対の面側、または前記第2シートの前記第1シートが積層される面と反対の面から熱針を刺し込んだ後、抜き出すことにより前記開口として前記第1シートおよび前記第2シートを貫通する貫通孔を形成し、前記熱針の刺し抜きにより溶融した前記第1熱伝導抑制層の前記樹脂層の前記樹脂および前記第2熱伝導抑制層の前記樹脂層の前記樹脂の少なくとも一方の一部により前記第1シートと前記第2シートとを接合し、前記熱針の刺し抜きにより溶融した前記第1熱伝導抑制層の前記樹脂層の前記樹脂および前記第2熱伝導抑制層の前記樹脂層の前記樹脂の少なくとも一方の一部により前記貫通孔の縁に沿った前記突出部を形成する、請求項23に記載の断熱シートの製造方法。 - 請求項22から請求項24のいずれか1つに記載の断熱シートの製造方法により製造された複数の断熱シートを、前記突出部を挟んで積層することにより、断熱材を製造する工程を含む断熱材の製造方法。
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