A7 B7 五、發明説明（I ) 發明領城 本發明是有關於一種氣囊糸統用來保護乘客免於受到 衝擊，且特別是一種氣囊用氣體産生器，其有效地防止 氣體産生作用劑吸收大氣中之水份或水蒸氣，且具有一 穩定的操作能力。 習知抟術説明： 當類如汽車的動力車輔於高速下與某物相撞擊時，由 於慣性，車輛内的乘客可能擠入車内堅硬或危險的零件 中，如方向盤或前擋風玻璃。為了防止乘客免於如此撞 擊而受傷或致死，已發展出汽車用氣囊糸統，其中一氣 囊由一氣體産生作用劑所産生之氣體快速充氣》此適合 於汽車氣囊条統之氣體産生作用劑是必須滿足數個非常 嚴苛的條件。首先，此氣囊必須在一相當短的時間内充氣 ，正常在0.04至0.05秒間。目前一般所使用之氣體産生 作用劑，其含有氳壘氮酸的鹼金屬鹽鹼土金屬鹽如昼氮 化鈉作為基本底，而可滿足這些條件且發揮優良的特性。 經濟部中央標準局員工消費合作社印製 (請先閲讀背面之注意事項异填寫本頁) 亦發展出非璺氤化物氣體産生作用劑，其能夠取代含有 疊氮化鈉作為基本之作用劑，例如，日本特許公開公告第 3- 2 0 8 8 7 8號中所掲示之混合物，其包含四唑，三唑或它 們的金屬鹽類，及含有鹼金屬硝酸鹽如疊氮化鈉的含氧氣 化劑以作為主要成分。在另一方面，日本特許第64-6156 及64-6157號掲示一具有無氫的雙四唑（bitetrazole)化 合物的金屬鹽作為主要成分。又，日本特許公開公告第 3-208878號亦掲示一具有胺基四唑的過渡金颶化合物作 本紙張尺度適用中國國家標準（CNS〉A4規格（210X297公釐） A7 B7 五、發明説明（义） 經濟部中央標準局員工消費合作社印製 (請先閱讀背面之注意事項再填寫本頁) 為主成分。然而，許多上述作為氣體產生作用劑之混合 物含有氧化劑或其他表現出相當高程度的吸濕特性或潮 解性。因為含於氣體產生作用劑中之水含量在它的燃燒 特性上具有很大的影響，習用氣體產生器運用不同的方 法K防止貯存在其中之氣體產生作用劑免於吸收濕氣或 水蒸氣。例如，氣體產生作用劑是容納於一薄鋁容器中 ，其藉由一蓋子Μ密封劑來氣密地閉合，而此容器是安 裝於氣體產生器內。然而，此方法導致成本提高，且使 減小此充氣容器的尺寸成為困難。在此情況，最近已日 益増加使用一氣體產生器，其具有一密封帶化固著在它 的氣體排出口，Μ便防止濕氣進入此產生器。此密封帶 是藉由被覆一層具宥膠黏劑的防濕膜而形成，如熱固膠 黏劑或壓成膠黏劑。使用此種的密封帶使得實質降低成 本及減小氣體產生器的尺寸成為可能。然而，比較起前 述之濕氣防止方法，此密封帶在水蒸氣滲透性方面不是 那麼優良。也就是，此密封帶所固著之氣體產生器具有 一部份(此帶的側面），在那裡此氣體產生器的內部僅由此 密封帶的膠黏劑隔離外部。然而，通常這些膠黏劑含有 化學物質，諸如橡膠，丙烯，矽酮，或聚乙烯醚，Μ作 為主成分，用來增強黏合強度或剪切力黏度，且這些化 學物質具有相當高的水溶性或水分散性，因之允許或多 或少的水蒸氣通過經由僅有膠黏劑存在之密封帶部份而 進人內部。所以，此種已知之密封帶未能完全地防止濕 氣進入此產生器，而存在一可能性，就是當濕度達到某 -4- 本紙張尺度適用中國國家標準（CNS ) Α4Μ ( 210X297公釐） 經濟部中央標準局員工消費合作社印製 A7 _B7_ 五、發明説明（4 ) 一程度時，水蒸氣將滲透過密封帶。 如前所述，通常所使的密封帶中膠黏劑之主成分含有 橡膠，丙烯，矽_，或聚乙烯醚，其具有相當高的水溶 性或水分散性，Μ便増強黏合強度或剪切力黏度。當將 密封帶固著在氣體產生器的外殼壁上以封閉所形成之氣 體排出口時，使得例如在正常的環境下，大氣中的水蒸 氣是或多或少滲透過僅有膠黏劑用來胆絕水蒸氣之部份 ，而進入氣體產生器的內部。當密封帶是用來阻絕水蒸 氣的進人時，因之需要使用一種具有優良防濕特性之材 料，同時確保此密封帶的黏合與保持效用。 發明槪沭： 本發明的一目的是提供一種氣囊用氣體產生器，其使 用一密封帶Μ防止水蒸氣進入內部，而免於遭遇習知技 術中的上述問題。 經過費盡心力的研究Μ企圖去解決上述的問題之结果 ，本發明人發現，假如氣體產生器與大氣相通的開口， 藉由一密封帶來密封，在此產生器放置於潮濕環境下一 段時間之後，由於氣體產生作用劑吸收濕氣此密封帶提 供對氣體產生器的重量不超過2.0¾的重量增加，故此密 封帶能夠達成氣體產生作用劑之防濕作用，且對此氣囊 用氣體產生器之性能有甚為微小之影響。本發明人根據 此發明已經完成本發明。 也就是，本發明有關於一種氣囊用氣體產生器，其特 徵為一形成Μ通過氣體產生器與大氣相通之開口是以一 -5- 本紙張尺度適用中國國家標準（CNS ) A4規格（210X297公釐） ^14 訂 ~ (請先閱讀背面之注意事項再填寫本頁) A7 B7 五、發明説明（4 ) 含有底層與黏箸劑之防濕密封帶來密封。此密封帶具有 水蒸氣滲透性當此氣體産生器是放置於一保持在一溫度 80 °C與濕度90%之恆溫恆濕室中經過20天後，由於貯存 於氣體産生器中之氣體産生作用劑吸收濕氣，其重量增 加率不會超過2 . 0 %。 在氣體産生器中，密封帶是緊密地用手壓合而固箸在 其内圓筒形部份或外殼，以便完全封閉數傾對大氣開放 的連通孔，如形成在内圓筒形部份中的通孔及形成通過 外殼的氣體排出口 〇前述之重量増加率取得如下，在將 此氣體産生器放置於一保持在溫度80°C與濕度9QX之恆 溫恆濕室中經過2 0天後量測其重量，而計算此所量測得重 量與放入恆溫恒濕室前所量得重量之差異，因此獲得一 相對於氣體産生作用劑的重量之差異百分比。特別地， 在此情況下，此重量增加率是當作此氣體産生器之水蒸 氣吸收率。 經濟部中央標準局負工消費合作社印製 (請先閱讀背面之注意事項再填寫本頁) 在本發明的氣體産生器經歷前述的留置試驗之前與後 ，執行此氣體産生器的燃燒評估。結果是，在潮濕情況 的留置試驗之前與後，並未觀察出此氣體産生器的性能 有明顯的差異。因此，在此氣體産生器中，本發明的密 封帶防止濕氣進入外殼，展現了穩定的作用能力或性能 而未被大氣中的水蒸氣所影響。 待別地，本發明所使用之密封帶較佳地具有水蒸氣滲 透性，以將於下文敘述之。 換句話説，防止濕氣進入氣體産生器之密封帶具有一 本紙張尺度適用中國國家標準（CNS ) A4規格（210X297公釐） A7 B7 五、發明説明（r ) 水蒸氣滲透性。而由於氣體產生作用劑吸收濕氣當以下 列的條件來量測時，隨著此滲透性每天重量的增加率等 於或小於0 . 0 5 0 %。 用來量測此密封帶的水蒸氣滲透性之條件如下。 只要符合下列的條件任何容器皆可用於此實驗： 1. 容器是Μ —具有100¾防濕特性之材料形成，而且在不 超過溫度ιοου與濕度loo%下，不會產生化學變化及明 顯的膨脹。此容器至少包含一蓋，一容器體，及一確 保此容器氣密性之構件。 2. 此容器能夠氣密地封閉，且具有一直徑3mm的圓孔，貫 穿此蓋。 3. 此容器之容積是不小於lcc。 經濟部中央標準局員工消費合作社印聚 (請先閲讀背面之注意事項再填寫本頁) 使用符合Μ上條件之容器時，此容器充填以至少〇 . &〇g 的氣體產生作用劑，而此充氣器的防濕密封帶是以10 mm X 10mm正方的形式固著於此蓋上的孔，同時一至少5 kg/ cm2的壓力是均勻地施加在此密封帶的表面上，使得此 密封帶的中央與此孔的中央相重合。然後，在預先量取 此氣體產生作用劑的重量後，迅速地將氣體產生作用劑 充填於容器中，安裝並固定蓋子K便確保氣密性。在此 氣密的容器保持於溫度8〇υ與濕度90%經過5至25天後， 拆開此容器，量取氣體產生作用劑之重量，而取得相對 於氣體產生作用劑之每天重量增加率。 在Μ上條件下此密封帶限制了由於氣體產生作用劑吸 收濕氣之每天重量增加率小於0.050¾，當此密封帶是使 -7- 本紙張尺度適用中國國家標準（CNS ) A4規格（210X297公釐） 經濟部中央標準局員工消費合作社印製 A7 B7 五、發明説明（) 用於氣體產生器K便防止氣體產生作用劑吸收濕氣時， 此氣體產生器的作用能力是較少可能為來自大氣中的水 蒸氣所影響。 使用於本發明之密封帶是Μ通孔直徑的2至3.5倍之 寬度為宜，此通孔如充氣器的氣體排出口，其為此密封 帶所固著而封閉。每一個位於通孔上端部與密封帶上緣 間及位於通孔下端部與密封帶下緣間之空隙是大約為通 孔直徑的0.5至1.25倍，是期望者。此密封帶期望地具有 一鋁箔形成之底曆。假如此鋁箔具有25/im或更大的厚 度，水蒸氣滲透度正常是零，而在此情況下能夠形成一 所需要形狀之密封帶，並具有增加之固著方便性，Μ確 保對環境之高抵抗性。例如，此密封帶可Μ具有50 Min 或更大厚度之鋁箔及具有30w m或更大厚度之膠黏劑來 形成。在鋁箔的厚度是200wm或更大的地方，鋁箔未必 會破裂，即使當氣體產生作用劑燃燒而產生氣體時，且 充氣器容器內部的壓力可能急速地增加，導致此容器在 其接合處裂開。在如此的情況下，氣體產生器可能無法 執行正常的作用，因之此容器可能破裂，而其組件與未 冷卻之氣體可能猝發爆裂，更可能地傷害到乘客。然而 ，當鋁箔是用作為密封帶的底層時，此帶的厚度是適合 地控制在50至150wm的範圍。 再者，一保護膜，如同一由氟化樹脂製成之樹脂膜， 能夠配置在鋁箔的底層上，Μ便增進此密封帶之防蝕性。 此密封帶的底層能夠藉由使用不同種類的膠黏劑，如 -8 - 本紙張尺度適用中國國家榇準（CNS)A4規格（2丨0X29?公釐） --------- (請先閲讀背面之注意事項再填寫本頁) 了 '—^m· flm flu^— mu ^-ί· '-^y ——^1« tm fn m kl B7 經濟部中央標準局員工消費合作社印製 五、發明説明（ 9 ) ί 1 壓 合 膠 黏 劑 或 熱 熔 膠 黏 劑 » 而 固 著 在 一 確 定 的 位 置 〇 此 1 熱 熔 膠 黏 劑 是 藉 由 熱 的 m VUu\ 用 而 熔 解 9 其 是 較 合 宜 地 使 用 1 | 來 將 此 底 層 確 實 地 黏 合 至 確 定 的 位 置 0 膠 黏 劑 的 厚 度 對 請 1 I 密 封 帶 底 層 的 厚 度 之 fcb 例 是 適 合 地 在 0 . 2至5 • 0的 範 圍 〇 閲 1 I 讀 1 I 壓 合 膠 黏 劑 是 適 合 地 作 此 膠 黏 劑 〇 含 有 丙 烯 或 矽 酮 之 膠 背 面 1 I 之 1 黏 劑 —* 般 是 作 為 壓 合 膠 黏 劑 其 能 夠 表 現 高 耐 用 度 在 ‘ 注 意 1 I 長 時 間 内 〇 此 丙 烯 膠 黏 劑 可 含 有 丙 烯 酯 作 為 主 要 組 成 物 事 項 1 I 再 1 | 9 其 含 量 是 4 0 %或更多， 其中藉由與酯中的乙醇發生反 填 寫 m ,/UA 而 結 合 之 碩 氫 基 中 所 含 磺 原 子 的 數 量 是 適 合 地 為 了 或 本 頁 '—- 1 | 更 大 9 因 為 如 此 的 膠 黏 劑 之 特 性 是 不 改 變 的 9 即 使 在 I 1 冰 點 以 下 的 溫 度 9 這 在 大 氣 中 是 可 能 的 〇 含 有 矽 酮 膠 黏 1 I 劑 適 合 地 包 含 矽 _ 橡 膠 及 砂 酮 樹 脂 作 為 主 要 組 成 物 〇 膠 1 訂 黏 劑 的 附 著 強 度 或 支 撐 力 (切面黏度） 通 常 是 根 據 J I S 1 0 2 37來 量 取 當 量 取 在 具 有 2 0 m m 寬 度 之 密 封 帶 上 ·*=£» 兀 成 時 1 I 此 m 黏 劑 適 合 地 具 有 1 k g f 或 更 大 的 附 箸 強 度 當 以 18 0 °c; 1 1 的 角 度 剝 下 此 密 封 帶 〇 至 於 切 面 黏 合 ，此密封帶在- -小 1 1 時 後 並 未 剝 離 9 且 移 動 距 離 亦 未 超 過 1 m m , 這是值得的。 Ο Ι 在 充 氣 器 中 9 其 使 用 氣 體 産 生 器 用 之 上 述 防 濕 密 封 帶 I 1 9 田 査 覺 出 撞 擊 時 啓 動 點 火 裝 置 9 氣 體 産 生 裝 置 包 含 燃 1 1 燒 以 産 生 氣 體 之 氣 體 産 生 作 用 劑 9 及 用 來 冷 卻 所 産 生 氣 1 I 體 之 過 濾 器 » 其 容 納 於 氣 囊 用 氣 體 産 生 器 中 9 而 如 氣 體 1 1 排 出 Π 之 通 孔 是 由 密 封 帶 封 閉 以 防 止 水 蒸 氣 進 入 氣 體 産 1 | 生 器 〇 1 本 發 明 的 氣 體 産 生 器 之 外 殼 9- 9 m 由 將 具 有 氣 體 排 出 1 1 1 1 1 1 本紙張尺度適用中國國家標準（CNS ) A4規格（210X 297公釐） 五、發明説明（2?) A7 B7 經濟部中央標準局負工消費合作社印掣 形 適啟點δ濾並 火應 作可，的含機，來屬， 燒 而 要所之 過， 點感 夠劑納同些有胍氮金上 燃 殻 需擊爆 /物 此之 能用化不那氮基或土面 之 密 所撞引J,劑餘 為針 都作氮有如含胺料鹼方 劑 靜 封 器由或 卻殘 作撞 物生疊經，之三燃或他。用 之 生一燃¥冷燒 夠出 合產是已劑物酸為屬其劑作 口 產有點φί及燃 能推 組體別。用似硝作金及用生 開 體具而¾.，之 都而 之氣特合作類有物鹼點作產 存 氣，動 體體 器擊。物之，混生或含 Μ 者觀生體 貯 用置啟 氣氣 火撞成化物物之產鹽些類或的產氣 器 囊裝的 燒燒 點出而氮化化銅體鼷那或，全體由 火 氣火器);燃燃 之測合疊氮氮化氣金或胺鹽安氣除 點 構點火ge生的 火偵組有疊疊氧物有，醯酸在之去 有 架：點ar產生 點一所含有機與化含物二氯。物來 具 有含此chM 產 械由蓋未含無納氮些成基，劑化用 一 ，包由r爆所 機是爆或。之化疊那組氰鹽化氮作 至 中 ，一fe引自 或器引有劑用氮非或要二酸氧#器 接 殻件及ns所來。火火或含用使疊為，主，硝為含漶 焊 外構 ，ra劑除體點點器的作泛的作唑為胍用作未過 設 之之器(t強去氣能槭爆知生廣量議三作硝使鹽用 / 散 述納火劑增來卻電機引熟產經等提 ·，，及酸使劑 擴 上容點強火用冷何 。一些體已有物唑物肼M氯地卻 .之。在地之增點，時任置及那氣自含合四合醯，過利冷 口成 當動火此器同 裝器 為選其混有化碳源的有 --------------訂------ (請先聞讀背面之注意事項再填寫本頁) 本紙張尺度適用中國國家標準（CNS ) A4規格（210X297公釐） A7 B7 五、發明説明（9 ) 而產生之燃燒殘餘物，且作用來冷卻燃燒氣體。例如， 以不锈鋼製成之金龎絲網篩或網孔薄板，如SUS304，SUS 310S,SUS316(根據日本工業標準），作成環形叠層體，然 後壓成所需之形狀，K作為冷卻劑/過濾器。此冷卻劑 /過濾器亦可由過滤器與冷卻劑組合而成，其已經為一 般所廣泛使用。 附圃簡要說明： 第1圖為根據本發明一實施例之氣體產生器的垂直截 面画； 第2圖為根據本發明另一實施例之氣體產生器的垂直 截面圖； 第3圖為一氣囊系統之结構圖；及 第4圖為充氣器之燃燒評估結果曲線圖。 中要元伴說明： 1 .擴散骰 2 .封密殻 3 .外殻 4 .點火器 經濟部中央標準局員工消費合作社印製 (請先閲讀背面之注意事項再填寫本頁) 5 .點火增強劑 6 .氣體產生作用劑 7.冷卻劑/過滤器 1 1 .氣體排出口 13 .密封帶 14 .通孔 -11 - 本紙張尺度適用中國國家標準（CNS ) A4規格（210X297公釐） A7 _B7_ 五、發明説明（v。） 龄住啻脶例詳細說明： 第1圖顯示根據本發明所架構之氣體產生器。此氣體 產生器包括：外殼3,由一擴散殼1及一封閉殼2所組成 . ;中央圓筒形構件8,配置在外殻3内K提供一分隔壁； 點火裝置，含有一點火器4與一點火增強劑5,配置在此 中央圓筒形構件8的中空部份，也就是在點火裝置貯存 室12;及氣體產生作用劑6的數個固體塊，由點火裝置 所點燃Μ產生燃燒氣體。此氣體產生器另包含一冷卻劑 /過濾器7,其配置在氣體產生作用劑6固體塊之周圍， 用來冷卻且淨化所產生之氣體，而支撐構件Μ板形構件 9 , 1 0的.形式配置在此冷卻劑/過濾器7的上端與下端部 份。在此氣體產生器或充氣器中，一密封帶13是固著在 外殼3中央圓筒形構件8之一部份的外表面，Μ便封閉 形成在此部份的通孔14,而一密封帶13是固著在外殼3 之一部份的內表面，Κ便封閉排出所產生氣體所經過之 氣體排出口 11。此容封帶用來防止濕氣進入外殻3與中 央圓筒形構件8之內部。 經濟部中央標準局員工消費合作社印製 (請先閱讀背面之注意事項再填寫本頁) 當感應器偵測出撞擊而其信號傳送至此氣體產生器之 點火器4時，啟動此點火器4 Μ引爆點火裝置貯存室16 中之點火増加劑5,因此產生一高溫火焰。此火焰經由通 孔14噴出Μ點燃通孔14附近之氣體產生作用劑6的數個 固體塊，然後藉由板形構件9的周圍壁部份15向下導引以 便點燃此氣體產生作用劑貯存室的下部中之氣體產生作 用劑6之數個固體塊。結果是，此氣體產生作用劑固體 -1 2 - 本紙張尺度適用中國國家標準（CNS ) Α4規格（210Χ297公釐） A7 B7 經濟部中央標準局員工消資合作社印掣 五、發明説明 卜丨) 1 1 塊 6 是 燃 燒 Μ 產 生 高 溫 高 壓 之 氣 體 » 而 所 產 生 的 燃 燒 氣 1 1 體 通 過 經 由 冷 卻 劑 / 過 m 器 7 的 整 個 1居 域 ， 所 Μ 有 效 地 1 冷 卻 此 氣 體 並 將 燃 燒 殘 餘 物 排 出 或 去 除 於 通 道 中 〇 因 此 請 1 先 1 ♦ 此 燃 燒 氣 體 是 冷 卻 且 淨 化 t 然 後 通 過 氣 體 通 道 > 爆 裂 閲 1 1 此 密 封 帶 13 並 經 由 氣 體 排 出 □ 1 1 噴 出 而 流 入 氣 囊 中 0 面 I 之 1 第 2 圖 是 根 據 本 發 明 的 另 —. 實 施 例 所 架 構 之 氣 囊 用 氣 注 意 1 I 事 1 體 產 生 器 的 截 面 圖 Ό 此 氣 體 產 生 器 包 含 —- 外 殻 21 9 由 項 再 1 ——* 擴 散 殼 19 與 —* 封 閉 殼 20所 組 成 $ 過 濾 器 裝 置 Μ 一 冷 填 寫 本 I 卻 劑 /過濾器的形式在此外殼21中用來界定- -燃燒室2 2 ; % 1 1 -- 點 火 器 18 9 配 置 於 此 燃 m n7C 室 22 中 > 及 數 個 氣 體 產 生 作 1 1 1 用 劑 6 的 固 體 塊 9 配 置 在 此 點 火 器 1 8 的 周 圍 〇 此 氣 體 產 1 1 生 劑 固 體 塊 6 是 藉 由 點 火 器 18 的 啟 動 而 引 燃 Μ 便 產 生 燃 1 訂 燒 氣 體 0 1 擴 散 殼 19 與 封 閉 殼 20 是 以 不 m 鋼 薄 板 壓 模 而 成 型 〇 數 1 1 個 氣 體 排 出 11 是 形 成 在 提 供 外 圓 周 壁 之 外 殼 的 整 個 外 1 I 圍 部 份 * 使 得 數 個 排 出 □ 11 是 Μ 相 等 間 隔 互 相 隔 開 在 圓 Λ 周 方 向 上 〇 如 上 述 之 密 封 帶 13 是 固 著 在 外 殼 21上 Μ 封 閉 1 氣 體 排 出 口 11 9 Η 便 防 止 濕 氣 白 外 側 空 間 進 入 此 氣 體 產 1 I 生 器 〇 板 形 構 件 17 用 來 限 制 充 填 在 燃 燒 室 22 中 氣 體 產 生 1 1 作 用 劑 6 固 體 塊 之 移 動 〇 此 板 構 件 17 具 有 一 外 圓 周 部 份 1 I t 其 鄰 接 冷 卻 劑 / 過 滹 器 7 之 一 端 部 的 內 圓 周 表 面 覆 1 I 蓋 此 內 圓 周 表 面 > 因 此 防 止 燃 燒 氣 體 經 由 一 此 冷 卻 劑 / 1 1 過 m 器 的 此 一 端 部 與 擴 散 設 的 内 壁 間 之 間 隙 而 短 路 t 而 1 1 未 通 過 此 過 m 器 〇 1 1 13 1 1 1 1 本紙張尺度適用中國國家標準（CNS > A4規格（210X297公釐> A7 B7 五、發明説明（a ) 第3圖顯示一氣囊糸統之架構。此氣囊糸統包括上述 之本發明的氣體產生器，一氣囊（囊體）1〇〇,及一模殼 101。自此氣體產生器的數個氣體排出口 11排出之數種 氣體是噴人氣囊100,其中此氣囊100打破模蓋102並充 氣或膨脹出此蓋102, Μ使形成一媛衝墊用來吸收方向盤 與駕駛者間的撞擊。 一根據第1-3圖所述之氣體產生器是用來作為此氣體 產生器。 此模殼，例如是Μ聚胺酯（PU)製成，包含一模蓋102。 氣囊100與氣體產生器是裝置在此模殼101內而形成一墊 模。此墊模是固定在方向盤上。 此氣囊100是Μ尼龍（例如nylon66)或聚酯製成，當其 折起時是固定在一形成在氣體產生器外圍上之凸緣，並 Μ其開口圍繞在此氣體產生器的氣體排出口 11。 經濟部中央標準局員工消費合作社印聚 (請先閱讀背面之注意事項再填寫本頁) 當用來封閉氣體噴出孔或排出口而固著在分隔壁或外 設之密封帶，其具有一低於經由實驗结果所得的參考值 之水蒸氣滲透性時，本發明的氣體產生器並不會遭遇在 燃燒能力上有明顯的降低。於一需要惡劣環境中長期抗 爭之氣囊用氣體產生器，使用上述之密封帶Μ遊免因氣 體產生作用劑吸收水蒸氣而造成燃燒速度降低，以確保 增進當撞擊發生時之氣囊作用可靠性。如上述的氣囊用 氣體產生器可用來提供一具有增強安全性之氣囊系統。 官例如下： 當本發明的一些實例及比較例現將揭示Κ便更詳细地 一 1 4 _ 本紙張尺度適用中國國家標準（CNS ) Α4規格（210Χ297公釐） 經濟部中央標準局員工消費合作社印製 A7 B7 五、發明説明（4 ) 來說明本發明時，這些實例的內容是無法來限制本發明 的° 實例1 . (密封帶的小蒸氣滲透性之評估） 準備一以SUS304製成而具35mm直徑與17mm高度之圓茼 ，其具有一 l〇mm直徑與13mm深度之凹面及一有3mm寬度 與1.5mm深度的凹槽形成於其中之端面，Μ便容納一防 濕包裝。準備一同樣KSUS 304製成而具碟彤之蓋，此蓋 具有3 5tnm直徑與lmm高度，並有一 3ntm直徑的孔形成在其 中央。一評估用之容器，可Μ螺絲自此蓋上的四個位置 ，將此蓋固定至上述之圓筒而獲得，並將此防濕包裝夾 在此蓋與此圓筒之間。一形狀為正方形lOmmX 10 mm的密 封帶是固著在此容器之蓋的中央部份，並有一 Skg/cra2 的力量均勻地施加在此密封帶上。此容器是填充Μ 0.8000g精確量之氣體產生作用劑，而為此密封帶所固 著之蓋是緊密地Μ螺絲固定在此圓筒上，使得此寬度為 2mm的密封帶是配置在此蓋的内側上，而矽包裝是夾在 此蓋與此圓筒之間。 此這樣密封的容器留置在一溫度8〇υ或更高與濕度90% 或更高之環境經過24天。然後，拆開此容器，並高精確 地量取氣體產生作用劑的重量，Μ便計算相對於此0.8000 g的氣體產生作用劑之每天重量增加率。 (氣囊用氣體產生器） 於如第1麵中所架構之氣囊用氣體產生器中，外設的 -1 5 - 本紙張尺度適用中國國家標準（CNS ) A4規格（210X297公釐） (請先閲讀背面之注意事項再填寫本頁)A7 B7 V. Description of the invention (I) The invention of the invention The invention relates to a system of airbags used to protect passengers from impacts, and in particular to a gas generator for airbags, which effectively prevents gas-generating agents from absorbing the atmosphere Water or water vapor, and has a stable operating ability. Description of conventional techniques: When a power vehicle such as a car is assisted with a collision with something at high speed, due to inertia, passengers in the vehicle may be squeezed into hard or dangerous parts such as the steering wheel or front windshield. In order to prevent passengers from being injured or killed by such impacts, automobile airbag systems have been developed. One of the airbags is rapidly inflated by a gas generated by a gas generating agent. The gas generating agent suitable for automotive airbag systems is Several very strict conditions must be met. First, the airbag must be inflated for a relatively short period of time, normally between 0.04 and 0.05 seconds. The gas generating agent currently used generally contains an alkali metal salt of alkaline nitrogen acid such as alkaline earth metal salt such as sodium nitrate as a basic base, and satisfies these conditions and exhibits excellent characteristics. Printed by the Consumer Cooperatives of the Central Bureau of Standards of the Ministry of Economic Affairs (please read the notes on the back and fill in this page). Non-halide gas generating agents have also been developed, which can replace sodium azide as a basic agent. , A mixture shown in Japanese Patent Laid-Open Publication No. 3- 2 0 8 8 7 8, which contains tetrazole, triazole or their metal salts, and oxygenation containing alkali metal nitrates such as sodium azide. Agent as the main ingredient. On the other hand, Japanese Patent Nos. 64-6156 and 64-6157 show a metal salt having a hydrogen-free bistetrazole compound as a main component. In addition, Japanese Patent Laid-Open Publication No. 3-208878 also shows that a transitional gold hurricane compound with aminetetrazole is used as the paper standard in accordance with Chinese national standards (CNS> A4 specification (210X297 mm) A7 B7 V. Description of the invention (meaning ) Printed by the Consumer Cooperatives of the Central Standards Bureau of the Ministry of Economic Affairs (please read the notes on the back before filling out this page) as the main component. However, many of the above-mentioned mixtures as gas-generating agents contain oxidants or other substances that exhibit a relatively high degree of absorption. Wet property or deliquescent. Because the water content contained in the gas generating agent has a great influence on its combustion characteristics, the conventional gas generator uses different methods to prevent the gas generating agent stored therein from being absorbed. Moisture or water vapor. For example, the gas generating agent is contained in a thin aluminum container which is hermetically closed by a lid M sealant, and the container is installed in the gas generator. However, this method This leads to an increase in cost and makes it difficult to reduce the size of the inflatable container. In this case, the use of a gas generation has recently been increasing The device has a sealing tape fixed to its gas exhaust port, and M prevents moisture from entering the generator. The sealing tape is formed by coating a moisture-proof film with an adhesive, such as thermosetting. Adhesive or pressed adhesive. The use of this type of sealing tape makes it possible to substantially reduce costs and reduce the size of the gas generator. However, compared to the aforementioned moisture prevention methods, this sealing tape is water vapor permeable The aspect is not so good. That is, the gas generator to which the sealing tape is fixed has a part (side of the belt), where the inside of the gas generator is only isolated from the outside by the adhesive of the sealing tape. However, Usually these adhesives contain chemicals, such as rubber, acrylic, silicone, or polyvinyl ether. M is used as the main component to enhance the adhesion strength or shear viscosity, and these chemicals have relatively high water solubility or water Dispersibility because it allows more or less water vapor to enter the interior through the portion of the sealing tape where only the adhesive is present. Therefore, this known sealing tape does not completely prevent moisture from entering Into this generator, there is a possibility that when the humidity reaches a certain -4- This paper size is applicable to the Chinese National Standard (CNS) Α4M (210X297 mm) Printed by the Consumer Cooperative of the Central Standard Bureau of the Ministry of Economic Affairs A7 _B7_ V. Invention Explanation (4) At a certain level, water vapor will penetrate the sealing tape. As mentioned earlier, the main component of the adhesive in the sealing tape usually contains rubber, acrylic, silicon, or polyvinyl ether, which has a considerable High water-solubility or water-dispersibility, M will strengthen the adhesive strength or shear viscosity. When the sealing tape is fixed on the shell wall of the gas generator to close the gas outlet formed, for example, in a normal environment At present, the water vapor in the atmosphere penetrates more or less through only the adhesive used to insulate the water vapor, and enters the interior of the gas generator. When the sealing tape is used to prevent water vapor from entering the person Therefore, it is necessary to use a material with excellent moisture-proof properties, and at the same time to ensure the adhesion and retention of the sealing tape. Invention 槪 沭: An object of the present invention is to provide a gas generator for an airbag, which uses a sealing tape M to prevent water vapor from entering the interior, and avoids the above-mentioned problems in the conventional technology. As a result of painstaking research and attempts to solve the above problems, the inventors have found that if the gas generator is open to the atmosphere, it is sealed by a sealing band, and the generator is placed in a humid environment for a period of time. Thereafter, since the gas generating agent absorbs moisture, the sealing tape provides a weight increase of the gas generator not exceeding 2.0¾, so the sealing tape can achieve the moisture-proof effect of the gas generating agent, and the gas generator for the airbag The performance has little effect. The present inventors have completed the present invention based on the present invention. That is, the present invention relates to a gas generator for an airbag, which is characterized in that an opening through which the gas generator communicates with the atmosphere is formed by a -5- paper size applicable to the Chinese National Standard (CNS) A4 specification (210X297). ^) ^ 14 Order ~ (Please read the precautions on the back before filling this page) A7 B7 5. Description of the invention (4) The moisture-proof seal containing the bottom layer and the adhesive seals. The sealing tape has water vapor permeability. When the gas generator is placed in a constant temperature and humidity room maintained at a temperature of 80 ° C and a humidity of 90%, the gas stored in the gas generator generates an effect after 20 days. The agent absorbs moisture and its weight increase rate does not exceed 2.0%. In the gas generator, the sealing band is tightly pressed by hand and fixed inside the cylindrical part or the outer shell, so as to completely close the communication hole opened to the atmosphere by the number of tilts, such as forming the inner cylindrical part. The through hole and the gas exhaust port formed through the shell. The aforementioned weight increase rate was obtained as follows. After the gas generator was placed in a constant temperature and humidity room maintained at a temperature of 80 ° C and a humidity of 9QX, 20 days passed. Measure its weight, and calculate the difference between the measured weight and the weight measured before putting it into the constant temperature and humidity chamber, so as to obtain a percentage difference with respect to the weight of the gas generating agent. Specifically, in this case, the weight increase rate is taken as the water vapor absorption rate of the gas generator. Printed by the Central Standards Bureau of the Ministry of Economic Affairs and Consumer Cooperatives (please read the precautions on the back before filling this page). Before and after the gas generator of the present invention has undergone the aforementioned indwelling test, perform a combustion evaluation of the gas generator. As a result, no significant difference was observed in the performance of this gas generator before and after the indwelling test in the wet condition. Therefore, in this gas generator, the sealing tape of the present invention prevents moisture from entering the casing and exhibits a stable ability or performance without being affected by water vapor in the atmosphere. The sealing tape used in the present invention is preferably water vapor permeable, as will be described later. In other words, the sealing tape that prevents moisture from entering the gas generator has a paper size applicable to the Chinese National Standard (CNS) A4 specification (210X297 mm) A7 B7 V. Description of the invention (r) Water vapor permeability. When the moisture absorption due to the gas generating agent is measured under the following conditions, the daily weight increase rate with this permeability is equal to or less than 0.05%. The conditions for measuring the water vapor permeability of this sealing tape are as follows. Any container can be used for this experiment as long as the following conditions are met: 1. The container is made of M—a material with 100¾ moisture resistance, and it will not produce chemical changes and significant swelling at temperatures not exceeding ιοου and humidity loo%. The container includes at least a lid, a container body, and a member to ensure the airtightness of the container. 2. The container can be hermetically closed and has a circular hole with a diameter of 3mm, which penetrates the lid. 3. The volume of this container is not less than lcc. Printed by the Consumers' Cooperative of the Central Standards Bureau of the Ministry of Economic Affairs (please read the precautions on the back before filling out this page) When using a container that meets the conditions on the M, this container is filled with at least 0. & 0g of gas generating agent, and The moisture-proof sealing tape of the inflator is fixed to the hole of the cover in the form of 10 mm X 10mm square, and a pressure of at least 5 kg / cm2 is evenly applied to the surface of the sealing tape, making the seal The center of the band coincides with the center of this hole. Then, after the weight of the gas generating agent is measured in advance, the container is quickly filled with the gas generating agent, and the lid K is attached and fixed to ensure air tightness. After the airtight container is maintained at a temperature of 80 ° and a humidity of 90% for 5 to 25 days, the container is disassembled and the weight of the gas generating agent is measured to obtain a daily weight increase rate relative to the gas generating agent. . Under the condition of M, this sealing tape limits the daily weight increase rate of moisture absorption due to the gas-generating agent to be less than 0.050¾. When this sealing tape is made -7- This paper size applies to Chinese National Standard (CNS) A4 specification (210X297 (Mm) Printed by the Consumers' Cooperative of the Central Bureau of Standards of the Ministry of Economic Affairs A7 B7 V. Description of the Invention () When used for the gas generator K to prevent the gas-generating agent from absorbing moisture, the working capacity of this gas generator is less likely to be Affected by water vapor from the atmosphere. The width of the sealing tape used in the present invention is preferably 2 to 3.5 times the diameter of the M through-hole. This through-hole, such as the gas outlet of an inflator, is fixed and closed by this sealing tape. Each of the gaps between the upper end of the through hole and the upper edge of the sealing tape and between the lower end of the through hole and the lower edge of the sealing tape is about 0.5 to 1.25 times the diameter of the through hole, which is desirable. This sealing tape desirably has a base calendar formed of aluminum foil. If the aluminum foil has a thickness of 25 / im or more, the water vapor permeability is normally zero, and in this case, it can form a desired shape of the sealing tape, and has increased convenience for fixing. High resistance. For example, the sealing tape may be formed of an aluminum foil having a thickness of 50 Min or more and an adhesive having a thickness of 30 mm or more. Where the thickness of the aluminum foil is 200wm or more, the aluminum foil does not necessarily rupture, even when the gas generating agent is burned to generate gas, and the pressure inside the aerator container may increase rapidly, causing the container to crack at its joint. . In such cases, the gas generator may fail to perform its normal function, and as a result, the container may rupture, and its components and uncooled gas may burst suddenly, which is more likely to harm passengers. However, when the aluminum foil is used as the bottom layer of the sealing tape, the thickness of the tape is suitably controlled in the range of 50 to 150 wm. Furthermore, a protective film, such as the same resin film made of fluorinated resin, can be disposed on the bottom layer of aluminum foil, and M will enhance the corrosion resistance of the sealing tape. The bottom layer of this sealing tape can use different kinds of adhesives, such as -8-This paper size is applicable to China National Standard (CNS) A4 specification (2 丨 0X29? Mm) --------- (Please read the precautions on the back before filling out this page.) '— ^ M · flm flu ^ — mu ^ -ί ·'-^ y ——1 1 tm fn m kl B7 Employee Consumer Cooperative of the Central Standards Bureau of the Ministry of Economic Affairs Printed 5. Description of the invention (9) ί 1 pressure-sensitive adhesive or hot-melt adhesive »and fixed in a certain position. This 1 hot-melt adhesive is melted by hot m VUu \ 9 It is more appropriate to use 1 | to securely adhere this bottom layer to a certain position. 0 The thickness of the adhesive to 1 I fcb of the thickness of the bottom layer of the sealing tape is suitably 0.2 to 5 • 0. Range 0 Read 1 I Read 1 I Laminated Adhesive is suitable for this adhesive. 0 Adhesive containing acrylic or silicone Back 1 I 1 Adhesive— * Generally used as laminating Adhesive which can show high durability in 'Note 1 I for a long time 〇 This propylene adhesive may contain propylene ester as the main composition matter 1 I then 1 | 9 Its content is 40% or more, where by The number of sulfonic atoms contained in the hydrogen group combined with the ethanol in the ester is reversely filled with m, / UA, which is suitable for the purpose of this page '—- 1 | larger 9 because the characteristics of such adhesives are not Change 9 Even if the temperature below the freezing point of I 1 9 This is possible in the atmosphere 〇 Contains silicone adhesive 1 I agent suitably contains silicon _ rubber and sand resin as the main composition 〇 Adhesive 1 adhesive adhesion Strength or supporting force (cutting viscosity) is usually measured in accordance with JIS 1 0 2 37 on a sealing tape with a width of 20 mm. * = £ »When it becomes 1 I This m adhesive suitably has 1 kgf Or larger attached When the strength peels off the sealing tape at an angle of 18 0 ° c; 1 1. As for the adhesive bonding on the cut surface, the sealing tape is not peeled after 9 hours and the moving distance does not exceed 1 mm. It is worth it. . Ο Ι In an inflator 9 The above-mentioned moisture-proof sealing tape for a gas generator I 1 9 When the field detects an impact, the ignition device is activated 9 The gas generating device contains a gas generating agent 9 that burns to generate gas 9 and uses Filter for cooling the gas 1 I body »It is contained in the gas generator for airbags 9 and the through hole of the gas such as gas 1 1 is closed by a sealing tape to prevent water vapor from entering the gas generator 1 | The casing of the invented gas generator is 9-9 m. The gas will be discharged. 1 1 1 1 1 1 This paper size is applicable to China National Standard (CNS) A4 specification (210X 297 mm). 5. Description of the invention (2?) A7 B7 The Central Standards Bureau of the Ministry of Economic Affairs, the Consumers' Cooperatives, printed the appropriate starting point δ filter and fire should be possible, including the machine, the genus, burn and pass, the point feel enough to contain some of the guanidine nitrogen on the fire The shell needs to be blasted. The material can be hit by the nitrogen-based or soil surface. J, I agents are needle like as a nitrogen base amine-containing side by a packer or static agent residue as it was hit by the stacked green, ter or his fuel. It can be used to produce a single product. It can be produced by cold burning. The combined production is a product of acid, which is the agent of the product. The use of nitrate as gold and the development of body tools, the capital of the special cooperation category has alkaloids as the production gas, the body strikes. Of the mixed or M-containing organisms, the salt-generating or gas-generating devices in the gas-generating device are used to burn the gas produced by the gas-fired gas-fired materials to produce salt. By fire gas firearm); combustion test combined with azide nitrogen gas or amine salt safety gas elimination point structure ignition ge fire detection group has azide, osmium acid has a shelf: point ar generation point An organic and chemical dichloride. The material has a base containing this chM. The cover does not contain some nitrogen-free bases, and it is used for chemical conversion. The explosion is caused by r explosion. The hydrogenated cyanide group of nitrogen is used as the intermediate, and one of the components is introduced from the OR device, and the nitrogen is used to connect the shell and the ns. Fire and fire or stacking is used, the main, nitrate is the outer structure containing rhenium welding, ra agent removal body point device is used as a guanidine, and guanidine is used as a non-prepared device (t strong degassing energy maple explosion It is widely known that three crops are used for nitrate to make salt use / to increase the amount of fire retardant, but the electric machine is used to induce ripening and production, etc., and the acid is used to expand the capacity of the high-temperature fire. Some substances already have azole hydrazine M. Chlorine .. The point of increase in the ground, when the home and the gas self-contained four-in-one combination, overly cold mouth as a fire, this device is equipped with a device to select the mixed carbon source-- ------------ Order ------ (Please read the precautions on the back before filling out this page) This paper size applies to China National Standard (CNS) A4 specification (210X297 mm) A7 B7 V. Combustion residue from the invention description (9), and it is used to cool the combustion gas. For example, gold-plated wire mesh screen or mesh sheet made of stainless steel, such as SUS304, SUS 310S, SUS316 (according to Japan Industry standard), made into a ring-shaped laminated body, and then pressed into the desired shape, K is used as a coolant / filter. This coolant / filter can also be composed of a filter and a coolant, which is already a It is widely used. Brief description of the attached garden: Figure 1 is a vertical cross-sectional drawing of a gas generator according to an embodiment of the present invention; Figure 2 is a vertical cross-sectional view of a gas generator according to another embodiment of the present invention; Figure 3 is a structural diagram of an airbag system; and Figure 4 is a graph of the combustion evaluation results of an inflator. The description of the key companions: 1. Diffusion dice 2. Sealed shell 3. Outer shell 4. Center of the igniter economy Printed by the Consumer Bureau of Standards Bureau (please read the precautions on the back before filling out this page) 5. Ignition enhancer 6. Gas generating agent 7. Coolant / filter 1 1. Gas exhaust port 13. Sealing band 14. Through hole-11-This paper size applies Chinese National Standard (CNS) A4 specification (210X297 mm) A7 _B7_ V. Description of the invention (v.) Detailed description of the example of age and residence: Figure 1 shows the structure of the structure according to the present invention. Gas generator. The gas generator includes: a casing 3, which is composed of a diffusion shell 1 and a closed shell 2. a central cylindrical member 8, which is arranged in the casing 3 to provide a partition wall; an ignition device containing a point Firearm 4 and an ignition enhancer 5, with It is placed in the hollow part of the central cylindrical member 8, that is, in the ignition device storage chamber 12; and several solid blocks of the gas generating agent 6, which are ignited by the ignition device to generate combustion gas. This gas generator is additionally Contains a coolant / filter 7 which is arranged around the solid block of the gas generating agent 6 for cooling and purifying the generated gas, and the supporting member M plate-shaped member 9, 10 is arranged here for cooling Upper and lower parts of the agent / filter 7. In this gas generator or inflator, a sealing band 13 is fixed to the outer surface of a part of the central cylindrical member 8 of the casing 3, and M is closed to form In this part of the through hole 14, and a sealing tape 13 is fixed to the inner surface of a part of the casing 3, K closes the gas discharge port 11 through which the generated gas is discharged. This containment tape serves to prevent moisture from entering the interior of the casing 3 and the central cylindrical member 8. Printed by the Consumer Cooperative of the Central Standards Bureau of the Ministry of Economic Affairs (please read the precautions on the back before filling out this page). When the sensor detects a collision and its signal is transmitted to the igniter 4 of this gas generator, start this igniter 4 Μ The ignition additive 5 in the ignition device storage chamber 16 is detonated, thus generating a high-temperature flame. This flame ejects several solid blocks of the gas-generating agent 6 near the ignition hole 14 through the through-hole 14 and is then guided downward through the peripheral wall portion 15 of the plate-shaped member 9 to ignite the gas-generating agent and store it. The gas in the lower part of the chamber produces several solid blocks of the agent 6. As a result, the gas-generating agent solid-1 2-This paper is in accordance with the Chinese National Standard (CNS) A4 specification (210 × 297 mm) A7 B7 Printed by the Consumers' Cooperatives of the Central Standards Bureau of the Ministry of Economic Affairs 5. Description of inventions 丨) 1 1 Block 6 is the combustion gas that produces high temperature and high pressure gas »and the combustion gas 1 1 body passes through the entire 1 dwelling area through the coolant / mover device 7, so M effectively 1 cools the gas and burns the residue It is discharged or removed in the channel. Therefore, please firstly 1 ♦ This combustion gas is cooled and purified t and then passes through the gas channel > burst read 1 1 This sealing band 13 and exhausted through the gas □ 1 1 spouts and flows into the airbag 0 surface I No. 1 The second figure is according to another embodiment of the present invention. The airbag used in the embodiment of the structure of the note 1 I matter 1 sectional view of the body generator Ό The body generator contains --- housing 21 9 consisting of item 1 --- * diffuser housing 19 and-* closed housing 20 $ Filter device M Fill in the form of the coolant / filter in this housing 21 Used to define--Combustion chamber 2 2;% 1 1-Ignitor 18 9 is arranged in this m7C chamber 22 > and several solid blocks 9 which are used as 1 1 1 agent 6 are arranged here for ignition Around the device 1 8 This gas produces 1 1 Biomass solid block 6 is ignited by the ignition of the igniter 18 to generate combustion 1 Ordering gas 0 1 The diffuser shell 19 and the closed shell 20 are stainless steel sheets It is formed by compression molding. The number of 1 gas discharge 11 is formed on the entire outer periphery of the outer shell that provides the outer circumferential wall. I makes a plurality of discharges □ 11 is Μ spaced at equal intervals from each other in the direction of the circle Λ. As mentioned above, the sealing tape 13 is fixed to the casing 21 上 Ｍcloses 1 the gas outlet 11 9 Η prevents the white space of moisture from entering the gas production 1 I generator 0 plate-shaped member 17 is used to limit the gas filled in the combustion chamber 22 1 1 agent 6 solid block Moving this plate member 17 has an outer circumferential portion 1 I t whose inner circumferential surface adjoins one end of the coolant / overflow device 7 covers the inner circumferential surface < thus prevents combustion gases from passing through the coolant / 1 1 There is a short-circuit between the gap between this end of the transformer and the inner wall of the diffuser, and 1 1 fails the transformer. 〇 1 1 13 1 1 1 1 This paper size applies the Chinese national standard (CNS > A4 Specifications (210X297 mm > A7 B7 V. Description of the invention (a) Figure 3 shows the architecture of an airbag system. This airbag system includes the above-mentioned gas generator of the present invention, an airbag (capsule) 100, and a mold case 101. The gases emitted from the gas outlets 11 of the gas generator are sprayed into the airbag 100, wherein the airbag 100 breaks the mold cover 102 and inflates or expands out of the cover 102, so that a single punch pad is formed to absorb The collision between the steering wheel and the driver. A gas generator according to Figs. 1-3 is used as the gas generator. The mold shell, for example, is made of M polyurethane (PU) and includes a mold cover 102. The airbag 100 and the gas generator are installed in the mold case 101 to form a cushion mold. This cushion is fixed on the steering wheel. The airbag 100 is made of nylon (e.g. nylon66) or polyester. When folded, it is fixed to a flange formed on the periphery of the gas generator, and its opening surrounds the gas outlet of the gas generator. 11. Printed by the Consumers' Cooperative of the Central Standards Bureau of the Ministry of Economic Affairs (please read the precautions on the back before filling out this page). When used to seal the gas ejection holes or exhaust ports, the sealing tape is fixed to the partition wall or peripherals. When the water vapor permeability of the reference value obtained through the experimental results, the gas generator of the present invention does not encounter a significant decrease in the combustion capacity. In a gas generator for an airbag that requires long-term resistance in a harsh environment, the use of the above-mentioned sealing tape M is used to avoid a reduction in the burning speed caused by the gas-generating agent to absorb water vapor, so as to ensure the reliability of the airbag function when an impact occurs. The gas generator for an airbag as described above can be used to provide an airbag system with enhanced safety. The official example is as follows: When some examples and comparative examples of the present invention will be revealed, K will be more detailed. 1 4 _ This paper size is applicable to China National Standard (CNS) Α4 specification (210 × 297 mm) Staff consumption of the Central Standards Bureau of the Ministry of Economic Affairs Cooperative prints A7 B7 V. Description of the invention (4) When explaining the invention, the content of these examples cannot limit the invention ° Example 1. (Evaluation of the small vapor permeability of the sealing tape) Preparation 1 made of SUS304 A round cymbal with a diameter of 35mm and a height of 17mm has a concave surface with a diameter of 10mm and a depth of 13mm and a groove with a width of 3mm and a depth of 1.5mm formed on the end face, and M will contain a moisture-proof packaging. A lid made of the same KSUS 304 with a dish was prepared. The lid had a diameter of 35 nm and a height of 1 mm, and a hole having a diameter of 3 ntm was formed in the center. A container for evaluation can be obtained by fixing the cap to the above-mentioned cylinder by four screws on the cap, and sandwiching the moisture-proof packaging between the cap and the cylinder. A sealing tape with a shape of 10 mm × 10 mm is fixed to the central part of the lid of the container, and a force of Skg / cra2 is evenly applied to the sealing tape. This container is filled with M 0.8000g of a precise amount of gas generating agent, and the cap fixed to the sealing tape is tightly screwed to the cylinder so that the sealing tape with a width of 2 mm is arranged on the cap. On the inside, and the silicon package is sandwiched between this cover and this cylinder. This sealed container was left in an environment with a temperature of 80 ° or higher and a humidity of 90% or higher for 24 days. Then, the container was disassembled and the weight of the gas generating agent was measured with high accuracy, and M calculated a daily weight increase rate relative to the 0.8000 g of the gas generating agent. (Gas generator for airbags) In the gas generator for airbags as constructed in the first side, the peripherals are -1 5-This paper size applies to China National Standard (CNS) A4 (210X297 mm) (please first (Read the notes on the back and fill out this page)
經濟部中央標準局員工消費合作社印裂 A7 B7 五、發明説明（4 ) 容積及數個通孔的總面積揭示如下： 外殻的容積：103cc 外殻的數個通孔總面積：146.01ΠΙΙΠ2 數個外通孔面積：（1.5mm)2 X 3. 14X 18 = 127. 17mm2 數個內通孔面積：（1 . 0 m m ) 2 X 3 . 1 4 x 6 = 1 8 . δ 4 m ra2 (充氣器的水蒸氣吸收百分比之評估） 於如上述所架構之氣囊用氣體產生器中，一 1 0 m «1寬6 5 mm長之密封帶及一 10mm寬205mm長之密封帶是Μ手分別 緊密地壓合在外穀的內圓筒部份及外圓筒郜份上，Κ便 完全地封閉形成在內圓筒部份之數個通孔14及形在外圓 筒部份之數個氣體排出口 11。在此氣體產生器留置於一 溫度80¾濕度90%之恆溫恆濕室中經過20天後，量取此 氣體產生器的重量，並計算此重量與充氣器放入恆溫恆 濕室前的重量之差別。此相對於氣體產生作用劑的重量 之重量差百分比是取得作為充氣器之水蒸氣吸收百分比。 (充氣器燃燒之評估） 根據上述之評估方法，評估一防濕密封帶的一些特性 。用於此實例中此防濕密封帶之評估結果如下： 商品名：Nitofoil ΑΤ-SO由Nitto Denko公司所製造 結構：約5〇ί/πι厚度的鋁箔與約50Wm厚度的膠黏劑 水蒸氣滲透性（每天重量增加率）：0.030 %。 充氣器的水蒸氣吸收百分比：0.37¾ 評估了使用上述的密封帶之充氣器中的燃燒。為了評 估此燃燒性，氣體產生器的溫度是立即地控制於20t：在 -16- 本紙張尺度適用中國國家標準（CNS ) Α4規格（210Χ297公釐） (請先閱讀背面之注意事項再填寫本頁)Employees' cooperative of the Central Standards Bureau of the Ministry of Economic Affairs printed A7 B7 V. Description of the invention (4) The volume and the total area of several through-holes are disclosed as follows: The volume of the shell: 103cc The total area of several through-holes in the shell: 146.01ΠΙΙΠ2 Number Area of external through holes: (1.5mm) 2 X 3. 14X 18 = 127. 17mm2 Area of several internal through holes: (1.0 mm) 2 X 3. 1 4 x 6 = 1 8. Δ 4 m ra2 ( Evaluation of the percentage of water vapor absorption of the inflator) In the gas generator for an airbag structured as described above, a 10 m «1 width 65 mm long seal tape and a 10 mm width 205 mm long seal tape are M hands respectively. Press tightly on the inner cylinder part of the outer valley and the outer cylinder part, K will completely close the through holes 14 formed in the inner cylinder part and several gas exhausts formed in the outer cylinder part. Exit 11. After the gas generator is left in a constant temperature and humidity room with a temperature of 80¾ and humidity of 90%, the weight of the gas generator is measured after 20 days, and the weight of the gas generator and the weight of the inflator before being placed in the constant temperature and humidity room are calculated. difference. The percentage difference in weight relative to the weight of the gas generating agent is the percentage of water vapor absorption obtained as an inflator. (Evaluation of inflator combustion) According to the above evaluation method, some characteristics of a moisture-proof sealing tape are evaluated. The evaluation results of the moisture-proof sealing tape used in this example are as follows: Trade name: Nitofoil AT-SO manufactured by Nitto Denko Company Structure: aluminum foil with a thickness of about 50 〇 / πι and adhesive water vapor penetration with a thickness of about 50 Wm Sex (weight gain per day): 0.030%. Percent water vapor absorption of the inflator: 0.37¾ The combustion in the inflator using the above-mentioned sealing tape was evaluated. In order to evaluate this flammability, the temperature of the gas generator is immediately controlled at 20t: -16- This paper size applies the Chinese National Standard (CNS) A4 specification (210 × 297 mm) (Please read the precautions on the back before filling in this page)
B7 五、發明説明（^ ) 其留置於上述狀況後，而此氣體產生器是固定在一 60公 升的不可充氣的金屬箱內側，其為液密地封閉。然後， 傳送一信號至此氣體產生器Μ便啟動點火。第4圖顯示 於此箱中由一感應器所偵測出之相對於時間的壓力變化 之測量結果。在這樣取得的結果與一未留置於上述情況 的氣體產生器之燃燒評估結果（如第4圖中Μ參考符號 ” a ”標示）之間，並未觀察出明顯的差別。 實例2 根據相同於實例1之評估方法，評估一防濕密封帶之 特性。此實例與實例1相同，除了如後所指定之密封帶 是使用為充氣器之防濕密封帶。 商品名：BYTAC AF-21由Norton公司所製造 結構 ：約25m m厚度的Teflon FEP,約50w ni厚度的 的鋁箔及約3 0 w m厚度的膠黏劑 水蒸氣滲透性（每天重量增加率）：0.036¾ 充氣器的水蒸氣吸收百分比：1.59¾ 經濟部中央標準局員工消費合作社印聚 (請先閲讀背面之注意事項再填寫本頁) 第4圖所顯示的是使用先前指定的密封帶之充氣器的 燃燒評估結果。在這樣取得的结果與一未留置於上述情 況的氣體產生器之燃燒評估結果之間，並未觀察出明顯 的差別。 比較例1 根據相同於實例1之評估方法，評估一防濕密封帶之 特性。此實例與實例1相同，除了如所指定之密封帶 @使用為充氣器之防濕密封帶。 1 -17- 本紙張尺度適用中國國家標準（CNS ) A4C格（210X297公釐） A7 B7 五、發明説明（4 ) 商品名：#433L由Sumitomo3M所製造 结構 ：約50«m厚度的鋁箔及約30/um厚度的膠黏劑 水蒸氣滲透生（每天重量増加率）：0.060% 充氣器的水蒸氣吸收百分比：5.41% 第4圖所顯示的是使用先前指定的密封帶之充氣器的 燃燒評估结果。在這樣取得的結果與一未留置於上述情 況的氣體產生器之燃燒評估结果之間，觀察出一異常的 差則。 比較例2 根據相同於實例1之評估方法，評估一防濕密封帶之 特性。此實例與實例1相同，除了如後所指定之密封帶 是使用為充氣器之防濕密封帶。 商品名：tf439L由Sumitomo 3M所製造 结構 ：約50wro厚度的鋁箔及約30/iin厚度的膠黏劑 水蒸氣滲透性（每天重量增加率）：0.083¾ 充氣器的水蒸氣吸收百分比：6 . 8 1 % 經濟部中央標準局員工消費合作社印^ (請先閱讀背面之注意事項再填寫本頁) 第4圖所顯示的是使用先前所指定的密封帶之充氣器 的燃燒評估結果。在這樣取得的结果與一未留置於上述 情況的氣體產生器之燃燒評估结果之間，観察出一異常 的差別。 實例3 根據相同於實例1之評估方法，評估一防濕密封帶之 特性。此實例輿實例1相同，除了如後所指定之密封 帶是使用為充氣器之防濕密封帶。 -18- 本紙張尺度適用中國國家標準（CNS ) A4規格（210X：297公釐） Α7 Β7 五、發明説明（) 商品名：Nitofoil AT-80由Nitto Denko公司所製造 結構 ：約80wra厚度的鋁箔及約50Wm厚度的膠黏劑 水蒸氣滲透性（每天重量增加率）：0.037¾ 充氣器的水蒸氣吸收百分比：0.46¾ 第4圖所顯示的是使用先前所指定的密封帶之充氣器 的燃燒評估結果。在這樣取得的結果與一未留置於上述 情況的氣體產生器之燃燒評估結果之間，並未観察出明 顯的差別。 如此這樣地說明了本發明，同樣的可Μ用許多不同的 方法來變化。如此的變化將不會認為是在本發明的精神 與範圍之外，而對熟知此技術者為明顯之所有如此的修 改都是含蓋在Μ下申請專利範圍内。 --------^一装-- (請先閲讀背面之注意事項再填寫本頁) 、1ΤB7 V. Description of the invention (^) It is left behind after the above condition, and the gas generator is fixed inside a 60-litre non-inflatable metal box, which is liquid-tightly closed. Then, a signal is sent to the gas generator M to start ignition. Figure 4 shows the measurement results of the pressure change with time detected by a sensor in this box. No obvious difference was observed between the results obtained in this way and the combustion evaluation results of a gas generator that was not left in the above situation (as indicated by the M reference symbol "a" in Figure 4). Example 2 The characteristics of a moisture-proof sealing tape were evaluated according to the same evaluation method as in Example 1. This example is the same as Example 1, except that the sealing tape as specified later is a moisture-proof sealing tape used as an inflator. Trade name: BYTAC AF-21 manufactured by Norton Company Structure: Teflon FEP with a thickness of about 25m, aluminum foil with a thickness of about 50w ni, and water vapor permeability of the adhesive with a thickness of about 30 wm (daily weight increase rate): 0.036¾ Percent of water vapor absorption of the inflator: 1.59¾ Printed by the Consumer Cooperative of the Central Standards Bureau of the Ministry of Economic Affairs (please read the precautions on the back before filling this page) Figure 4 shows the inflation using the previously specified sealing tape Of the combustion evaluation of the device. No significant difference was observed between the results obtained in this way and the combustion evaluation results of a gas generator which was not left in the above case. Comparative Example 1 The characteristics of a moisture-proof sealing tape were evaluated according to the same evaluation method as in Example 1. This example is the same as Example 1, except that the sealing tape as specified @Use a moisture-proof sealing tape as an inflator. 1 -17- This paper size applies Chinese National Standard (CNS) A4C grid (210X297 mm) A7 B7 V. Description of the invention (4) Trade name: # 433L Manufactured by Sumitomo3M Structure: Aluminum foil with a thickness of about 50 «m and about 30 / um thickness adhesive water vapor penetration (weight increase rate per day): 0.060% water vapor absorption percentage of the inflator: 5.41% Figure 4 shows the combustion evaluation of the inflator using the previously specified sealing tape result. An abnormal difference was observed between the result obtained in this way and the combustion evaluation result of a gas generator which was not left in the above case. Comparative Example 2 The characteristics of a moisture-proof sealing tape were evaluated according to the same evaluation method as in Example 1. This example is the same as Example 1, except that the sealing tape as specified later is a moisture-proof sealing tape used as an inflator. Product name: tf439L manufactured by Sumitomo 3M Structure: Aluminum foil with a thickness of about 50wro and adhesive with a thickness of about 30 / iin Water vapor permeability (weight increase rate per day): 0.083¾ Water vapor absorption percentage of the inflator: 6.8 1% Printed by the Consumers' Cooperative of the Central Standards Bureau of the Ministry of Economic Affairs ^ (Please read the precautions on the back before filling out this page) Figure 4 shows the results of the combustion evaluation of the inflator using the previously specified sealing tape. An abnormal difference was detected between the result obtained in this way and the combustion evaluation result of a gas generator which was not left in the above case. Example 3 The characteristics of a moisture-proof sealing tape were evaluated according to the same evaluation method as in Example 1. This example is the same as Example 1, except that the sealing tape specified later is a moisture-proof sealing tape used as an inflator. -18- This paper size applies Chinese National Standard (CNS) A4 specification (210X: 297 mm) A7 B7 V. Description of the invention () Product name: Nitofoil AT-80 Structure manufactured by Nitto Denko Company: Aluminum foil with a thickness of about 80wra And about 50Wm thickness of the adhesive water vapor permeability (weight increase rate per day): 0.037¾ water vapor absorption percentage of the inflator: 0.46¾ Figure 4 shows the combustion of the inflator using the previously specified sealing tape evaluation result. No significant difference was observed between the results obtained in this way and the combustion evaluation results of a gas generator that was not left in the above situation. Having thus described the invention, the same modality can be changed in many different ways. Such changes will not be considered to be outside the spirit and scope of the present invention, but all such modifications apparent to those skilled in the art are covered by the scope of patent application under M. -------- ^ One Pack-(Please read the precautions on the back before filling this page), 1T
經濟部中央標準局員工消費合作社印聚 19- 本紙張尺度適用中國國家標準（CNS ) Α4規格（210Χ297公釐）Printed by the Consumers' Cooperative of the Central Bureau of Standards of the Ministry of Economic Affairs 19- This paper size applies to the Chinese National Standard (CNS) Α4 specification (210 × 297 mm)