200528364 (1) 九、發明說明 【發明所屬之技術領域】 本發明是關於殺菌用包裝體。 【先前技術】 先前，當保存醫療材料、醫療器具、食品等物品時， 是在容器或薄膜、膜片等之形狀的包裝體主體；及兼有所 謂無法透過細菌等的微生物且能將殺菌用氣體透過之功能 的殺菌用膜片之間，插入、配置上述的物品，可使用將殺 菌用膜片熱封在包裝體的殺菌用包裝體。該殺菌用包裝體 ’是其後，構成藉由環氧乙院（ethylene oxide)、過氧化氫 、蒸氣等的殺菌用氣體而加以處理。 另外，從以往所通用的殺菌用包裝體，是雖然因爲熱 封性，所以在殺菌用膜片的密封面設置接著劑層的包裝體 ’但是在如此的包裝體，是爲了確保殺菌用的氣體的透過 性，有必要部分性地塗佈接著劑。另一方面，如此的包裝 體，是因爲從接著劑的塗佈及殺菌氣體的透過之面來的限 制多，所以也具有實用上的問題，冀望加以改良。 相對於此，透過加熱接著性的接著劑層而熱封殺菌用 膜片於設置在包裝體主體的杯型容器之主體部的周緣的突 緣部，並在開封的情況，該接著劑，是提議有使用殘留在 殺菌用膜片及包裝體主體的雙方之性質的接著劑之包裝構 造（例如，日本特開2 0 0 1 - 3 1 1 4 6號公報）。如此的包裝構 造’在具體上，是相對於將接著劑作爲最內層的容器而熱 -4- 200528364 (2) 封殺菌用膜片者。 第1 〇圖是說明在上述的先前例的包裝構造1 ο 〇之開封 時的狀態的剖面圖。如第1 〇圖所示，形成在由最內層2 0 1 、下一層202、下下層20 3所組成的容器200的最內層201之 中，接著劑層2 0 1 a是在殺菌用膜片3 0 0側，另外，接著劑 層201b是製作成構成在容器200側，並藉由接著劑層201 的層內剝離而開封。爲此，作爲接著劑，是構成限定在層 內剝離的樹脂。然後，一般性，層內剝離的樹脂是製作成 藉由含有強度性弱的樹脂、或耐熱性低的樹脂來維持其特 性。 然而，在如上述之先前的包裝構造，形成在容器側的 接著劑層，是因爲在剝離時有必要使接著劑層本身內聚破 壞，所以作爲接著劑而必須要有強度、耐熱性之低的樹脂 ’而有所謂可使用的接著劑的種類被大幅的限制之問題點 〇 另外，在近年，除了常溫氣體殺菌之形態的殺菌處理 之外，也施行使用高溫的蒸氣之高壓滅菌器（a u t 〇 c 1 a v e)的 殺菌處理。上述之先前的包裝構造，是使用環氧乙烷或過 氧化氫的殺菌用氣體等，而在殺菌處理被常溫下施行的情 況雖然特別的問題少，但是在使用高溫的蒸氣之高壓滅菌 器的殺菌處理的情況，也具有所謂無法從耐熱性之點適用 的問題點。 然後，在以往的包裝構造，因爲將接著劑層作爲必須 的構成，所以施行殺菌處理時，即使所包裝的被處理物之 -5- 200528364 (3) 殺菌處理被加以處理，也具有被處理物附著在包裝體主體 、或由於接著劑而導致污染的情況。 另外，關於在使用時的開封性，也有所謂開封感不良 的問題，實際狀況下有所謂不能得到令人滿足的滅菌用包 裝體。 【發明內容】 、 因此，本發明的目的是對形成多層包裝體主體的最內 鲁 層之熱可塑性樹脂的選擇並不特別限制，而重視與殺菌用 膜片的熱封性且可選定的殺菌用包裝體之中，另外，關於 殺菌處理，特別地，即使如蒸氣處理的高溫處理也可充分 地加以應付，並且提供在高溫處理時也不必擔心對被處理 物的包裝體主體的附著、或接著劑的污染之殺菌用包裝體 〇 爲了解決上述的課題，本發明的殺菌用包裝體是熱封 有由熱可塑性樹脂所組成的多層包裝體主體及殺菌用膜片 · 而構成的包裝體，其特徵爲：在從多層包裝體主體剝離上 述殺菌用膜片而開封的情況，包含上述多層包裝體主體之 至少其中最內層的層可移動剝離至殺菌用膜片側。 如此，本發明的殺菌用包裝體是將多層包裝體主體作 爲多層構造，將被包裝物插入、配置在該多層的包裝體主 體與殺菌用膜片間，將外周部熱封成周狀（與熱接著同意 。以下同）而作成殺菌用包裝體。 然後，在將該包裝體開封的情況，多層包裝體主體之 -6- 200528364 (4) 至少其中最內層的熱接著部是構成可移動並容易地剝離開 封至殺菌用膜片側，並且提供可強固的熱封殺菌用膜片之 殺菌用包裝體。 此處，所謂在多層包裝體主體的「最內層」，就是位 在於多層包裝體主體的最內面的層，也可說成可與殺菌用 膜片熱封的層，在本發明中，如果多層包裝體主體之至少 其中最內層與殺菌用膜片的熱封部分也一倂在開封時構成 、 一體並移動至殺菌用膜片側，剝離的形態並不特別限制。 φ 因此，例如，作爲剝離的形態是可列舉在多層包裝體 主體的最內層和該最內層相接的下一層的層間的剝離、或 在下一層的層內的剝離、或下一層和該下一層相接的下下 層的層間、或是此等的幾個貼合而發生的剝離。也就是說 ，內層和下一層的層間之外，亦可製作成將下一層或下下 層作爲多層構成，而在其層之間發生層間剝離。亦即，如 果能剝離包含可與殺菌用膜片熱封的最內層之層而形成構 成一體並移動至殺菌用膜片側就沒有問題。 · 另外，作爲多層包裝體主體的形狀，是不特別限制， 例如，雖然可作成膜片狀、薄膜狀，但是特別是製作成在 開口部的周緣形成突緣部的容器狀之形狀較佳。 根據如此的構成之本發明的殺菌用包裝體，因爲包含 多層包裝體主體之至少其中最內層的層可移動剝離至殺菌 用膜片側，所以形成多層包裝體主體的最內層之熱可塑性 樹脂的選擇並不特別限制，而可考慮並選定與殺菌用膜片 的熱封性（熱接著性）。然後，不管殺菌用氣體的種類，而 200528364 (5) 可殺菌處理，特別是即使如蒸氣處理之高溫處理也能充分 地加以應付。 另外，因爲在多層包裝體主體與殺菌用膜片的接著時 ，不必使用接著劑，所以在如蒸氣處理之高溫處理也不用 擔心接著劑的附著或污染。 再加上，即使將多層包裝體主體和殺菌用膜片的熱封 以夠高的密封強度來接著’也可給予易開封性。另外，對 多層包裝體主體的最內層之熱可塑性樹脂並不加以限制， 而可任意地控制殺菌用包裝體的開封強度。 本發明的殺菌用包裝體，上述的剝離是發生在多層包 裝體主體的最內層和下一層的層間、下一層的層內、下一 層和下下層的層間之任一處較佳。 根據該本發明，殺菌用膜片和多層包裝體主體的剝離 ，是因爲構成在特定的位置可進行如包含多層包裝體主體 之至少其中最內層的層可移動剝離至殺菌用膜片側，所以 能越發作爲良好包裝體的易開封性，並且藉由構成材料或 厚度等、籌畫各層的構成，而構成能任意地選擇剝離的位 置。 本發明的殺菌用包裝體是上述包裝體主體的最內層藉 由熔點1 1 Ot以上的聚烯烴系樹脂而構成較佳。 根據該本發明，多層包裝體主體的最內層是因爲藉由 特定範圍的熔點之聚烯烴系樹脂而構成，所以構成對耐熱 性、耐藥品性優異的殺菌用包裝體，構成即使高溫的蒸氣 處理也可充分應付。 -8- 200528364 (6) 本發明的殺菌用包裝體是上述的殺菌用膜片從熔I占 1 1 〇 °c以上的熱可塑性樹脂所組成的不織布所構成較佳。 根據該本發明，殺菌用膜片因爲由熔點11 0 t以上的 熱可塑性樹脂所構成，所以構成對耐熱性、耐藥品性優異 的殺菌用包裝體。 特別是，上述的最內層是藉由與利用熔點1 1 〇 t：以上 的聚烯烴系樹脂而構成的多層包裝體主體組合，而構成即 、 使利用高溫的蒸氣處理也可更加適合地應付。 · 本發明的殺菌用包裝體是上述多層包裝體主體的形狀 爲容器形狀較佳。 根據該本發明，由於多層包裝體主體的形狀爲容器形 狀，所以對使用性或收納性優異，並且例如，爲了容易收 納注射器等的被包裝物品，因此可將多層包裝體主體製作 成相對於底面部並配合該被包裝物品的形狀且任意地形成 一個乃至複數個凹部等的容器形狀等，也具有所謂能對包 裝的物品之形狀簡便地應付之優點。 ® 本發明的殺菌用包裝體是相對於上述多層包裝體主體 的熱封部的內側而形成有周狀的切入部較佳。 根據該本發明，因爲作爲在多層包裝體主體的熱接著 部的內側具有周狀的切入部之構成，所以在剝離最內層而 移動至殺菌用膜片時的熱封部中’因爲最內層的切斷確實 且容易地構成，所以構成可適合進行開封，構成可擴大多 層包裝體主體及殺菌用膜片之組合的範圍。 200528364 (7) 【實施方式】 本發明是藉由在由熱可塑性樹脂所構成的多層包裝體 主體的外周部熱封殺菌用膜片而得到的殺菌用包裝體。另 外’構成本發明的殺菌用包裝體之多層包裝體主體，是在 開封剝離時，有必要作成包含至少其中其最內層之層可朝 殺菌用膜片側移動。 因此，爲此，例如亦可多層包裝體主體的最內層和下 一層的層間剝離、藉由下一層內的內聚剝離，而最內層與 下一層的其中一部份一起移動的情況、藉由下一層和下下 層之層間剝離，而下一層與最內層一起一體性地移動的情 況、或7E此等的複合剝離。藉由如此的剝離，即使多層包 裝體主體的最內層與殺菌用膜片的密封強度高，也可確保 良好的易開封性。 此處，以多層包裝體主體的層構成作爲最內層/下一 層/下下層的層疊體的情況，最內層是因爲可和後述的殺 菌用膜片熱封之層，所以具有熱封性的材料較佳，（聚）烯 系樹脂，例如，使用同元聚丙烯（homo polypropylene(HPP))、不規則聚丙烯（random polypropylene(RPP))、團聯式聚丙烯（block polypropylene)等的聚丙烯系樹脂；或高密度聚乙烯 (HDPE)、低密度聚乙嫌（LDPE)等的聚乙烯系樹脂或直鏈 狀乙嫌- α -嫌異分子聚合物等較佳。 另外，作爲下一層或下下層，例如，使用聚丙烯（ΡΡ) 系樹脂、聚乙烯（ΡΕ)系樹脂等的聚烯烴系樹脂較佳，例如 -10- 200528364 (8) ’可適用同兀聚丙嫌（HPP)、不規則聚丙燒（Rpp)、團聯式 聚丙^寺的聚丙細系樹脂，或筒密度聚乙燒（hdpe)、低 密度聚乙烯（LDPE)等的聚乙烯系樹脂。而且，根據使用形 態’可使用配合有聚苯乙烯系樹脂、強化用的橡膠成分的 聚苯乙稀系樹脂等。另外’相對於此等的材料，而亦可添 加滑石粉等的無機塡充劑。 作爲作成上述的最內層/下一層/下下層的層疊體的情 況之具體例，而製作成在最內層和下一層間發生層間剝離 的情況時’可列舉有聚丙儲/局密度聚乙嫌（H D P E)/聚嫌烴 系樹脂的層構成、或與筒密度聚乙嫌（HDPE)/聚丙嫌+低 密度聚乙烯（LDPE)的混合物/聚烯烴系樹脂的層構成。此 處’最內層和下一層之間的剝離強度，是製作成較下一層 和下下層的剝離強度還小。 另外，爲了製作成在下一層內發生內聚剝離，所以列 舉有聚丙烯/聚丙烯+乙烯-丙烯酸酯-無水順丁烯二酸 異分子聚合物/聚烯烴系樹脂的層構成、或高密度聚乙烯 (HDPE)/聚丙烯+乙烯—丙烯酸酯—無水順丁烯二酸異分 子聚合物/聚烯烴系樹脂的層構成等。 多層包裝體主體的形狀是依據所收納的被包裝物品的 形狀、種類、尺寸等而可選定最適合的形狀，例如，可將 多層包裝體主體的形狀作成膜片狀、薄膜狀、容器狀等的 形狀。構成本發明的殺菌用包裝體的多層包裝體主體，是 爲了在即使此等之中的容器狀者，也可從多層膜片藉由熱 成形來形成對照被包裝物的形狀之凹部等的收納部較佳。 -11 - 200528364 (9) 另外，從被包裝物的種類或形態，該斗 複數個。 另外，作爲多層包裝體主體，是不 須要使細菌不侵入。作爲其形態，是如 薄膜狀、膜片狀、容器狀，但是當考慮 途的情況等時，從其形狀、或被包裝物 ’作成附有突緣部的容器形狀較佳。 接著，構成本發明的殺菌用包裝體 對於上述的多層包裝體主體而被熱封者 的微生物，且一倂具有所謂可透過殺菌 功能的膜片。 作爲該殺菌用膜片是具有微細孔， 氣度（Gurley type densometer)較佳爲 0· 更佳爲〇·5〜1 000秒/10〇cc左右者。而 如，亦可依據於JI S P 8 1 1 7而測定。 作爲殺菌用膜片的材質是可使用由 所組成的微多孔薄膜、不織布等，另外 的組合所組成的多層構成的膜片。另外 可採用杜邦公司製的商品名「Tyvek⑧ 知的高密度聚乙烯的膜片材。作爲構成 裝體的殺菌用膜片，是在此等之中，使 用由熱可塑性樹脂所構成的不織布特佳 作爲在採用作爲殺菌用膜片而由熱 的不織布之情況的該熱可塑性樹脂，是 欠納部亦可從1個到 必要有透氣性，必 上述，雖然可考慮 例如使用於醫療用 的配置性等之觀點 的殺菌用膜片是相 · ，無法透過細菌等 用氣體等的氣體之 如果採用格利式透 1〜2000秒/l〇〇cc ， 且，該透氣度是例 殺菌紙、合成樹脂 φ ，亦可作成由此等 ’作爲巾售品’而 1 073 B」來作爲已 本發明的殺菌用包 用不織布較佳，使 〇 可塑性樹脂所構成 可使用高密度聚乙 -12- 200528364 (10) 烯（HDPE)、低密度聚乙烯（LDPE)、直鏈狀低密度乙烯—α -烯異分子聚合物（LLD PE)、同元聚丙烯、乙烯等之不規 則共重合聚丙烯等的聚烯烴系樹脂；聚對苯二甲酸乙二醇 酯（PET)等的聚酯系樹脂；聚醯胺（尼龍）系樹脂；或此等 的組合樹脂材料等。 而且’作爲不織布，亦可在構成中心層等的芯之層使 用耐熱性樹脂，在表面層使用熱接著性之良好的樹脂之多 層不織布。 _ 另外’亦可使用從此等的熱可塑性樹脂所組成的纖維 、及人造絲纖維所組成的複合不織布。 另外’由熱可塑性樹脂所組成的不織布是熔點爲1 1 〇 °C以上，特別是120 °C以上的不織布較佳，特別是，採用 從此等的熔點所組成的聚烯烴系樹脂所構成的不織布較佳 。藉由作成如此構成的不織布，而構成對耐熱性、耐藥品 性優異的殺菌用膜片，可給予殺菌用包裝體該功能。 而且，在將殺菌用膜片作爲不織布的情況，是具有上 · 述的透氣度特性，作爲度量，可使用以20〜2 00g/m2左右 者較佳，30〜150g/m2左右左右者更佳。 然後，作爲殺菌用膜片所使用的不織布，是爲了防止 使用高溫的蒸氣氣體之高壓滅菌器殺菌處理的情況之水卞商 的網孔阻塞、或對包裝體內部之水分的殘留，所以製作成 具有親水性較佳。 因此，例如，在使用聚烯烴系樹脂的不織布的情況， 是相對於不織布而施加電暈處理、電漿處理、擴酸系或^ -13- 200528364 (11) 酸系親水基的導入處理、周知的山梨聚糖系等各種親水化 處理劑等的導入處理等爲有效。 此等的多層包裝體主體及殺菌用膜片是包裝被包裝物 品後，藉由熱封於周狀而加以密封，並形成殺菌用包裝體 〇 此處，在熱封多層包裝體及殺菌用膜片時，在多層包 裝體主體爲薄膜狀乃至膜片狀的情況，使多層包裝體主體 及殺菌用膜片疊合，亦可以周知的熱封機等來熱封周緣部 鲁 〇 另一方面，多層包裝體主體爲容器形狀的情況是亦可 相對於該容器的開口部的周緣並相對於所形成的突緣部的 上面而載置殺菌用膜片，且亦可以周知的熱封機等來熱封 突緣部上面的表面及殺菌用膜片。 作成如此而得到的殺菌用包裝體，是藉由殺菌用氣體 的處理，來加以進行殺菌用包裝體內的被包裝物品的殺菌 處理。殺菌用氣體是例如，列舉有環氧乙烷氣體、過氧化 · 氫氣體、高溫蒸氣氣體等。此等的殺菌用氣體是構成除了 殺菌用膜片之被熱封的部分以外，全面通過包裝體內部。 接著，關於在作爲多層包裝體主體而使用多層容器的 情況之殺菌用包裝體的實施形態，使用圖面說明。 第1圖是顯示本發明的殺菌用包裝體1的實施形態之一 例，作爲多層包裝體主體而使用多層容器2之例的立體圖 。第1圖中，1是殺菌用包裝體，2是多層容器，3是殺菌用 膜片。 -14- 200528364 (12) 殺菌用膜片3是相對於形成在多層容器2的開口部2 1之 周緣的突緣部22，而設置並熱封周狀的熱封部23。 然後，如第1圖所示，例如，在殺菌用包裝體1的角落 藉由拉上殺菌用膜片3，藉由多層容器2的最內層25之中熱 封部23發生切邊，而包含該最內層25的層可移動剝離至殺 菌用膜片3，可加以開封。 另外，在本實施形態的多層容器2是具有預定的深度 之大致長方形狀的托盤形狀的容器，如上述，具有大致長 方形狀的開口部2 1，在該開口部2 1的周緣，如伸出於外側 而形成有突緣部2 2。 該形狀的多層容器2是藉由熱成形從後述的層構成所 組成的預定之多層膜片而得到者。作爲形成多層容器2的 熱成形方法，是例如，以模塞（plug)來使多層膜片預先伸 張在形成爲多層容器2的外形形狀的模具空穴內，其後， 可採用藉由空壓成形或真空成形而形成容器的形狀之助壓 模塞（plug assist)成形法等的各種熱成形方法。 第2圖是第1圖的殺菌用包裝體1之開封前的Π — I[剖 面圖。如第2圖所示，多層容器2是由最內層25、下一層26 、下下層（基層）27所構成。 在本實施形態中，作爲構成最內層25的樹脂材料，是 例如，可例示同元聚丙烯（HPP)、不規則聚丙烯（RPP)、團 聯式聚丙烯、高密度聚乙烯（HDPE)、直鏈狀乙烯-α -烯 異分子聚合物等的烯系樹脂。 另外，在本實施形態中，和最內層2 5相接的層之下一 (13) 200528364 層26、及和下一層26相接的層之下下層27(基層），是例如 ，可使用聚丙烯（PP)系樹脂、聚乙烯（PE)系樹脂等的聚烯 烴系樹脂；或使該聚烯烴系樹脂混合的樹脂材料，亦可將 此等的樹脂材料，對應於開封狀態的形態而適宜選定。 然後，在本實施形態中，可和多層容器2的突緣部2 2 熱封的殺菌用膜片3，是例如，可使用由殺菌紙、合成樹 脂所組成的微多孔薄膜；不織布等，特別是，使用由熱可 塑性樹脂所構成的不織布較佳。另外，該不織布是從1 1 〇 °C以上，特別是1 2 0 °C以上的熔點所組成的聚烯烴系樹脂 所構成較佳，施有電暈處理等的親水性處理特佳。 以下，使用第3圖〜第6圖說明本發明的殺菌用包裝體 1的開封狀態。 第3圖是在本實施形態的殺菌用包裝體1中，顯示將多 層容器2的最內層2 5、及殺菌用膜片3熱封後的狀態（開封 前的狀態）的部分剖面圖。如第3圖所示，熱封部2 3是被形 成在位於形成爲多層容器2的突緣部22之上面的最內層25 # 及殺菌用膜片3之間，構成該熱封部23被遍及設置在形成 於多層容器2的開口部2 1周緣之突緣部2 2的全周。 形成在該多層容器2的開口部2 1的周緣之突緣部2 2、 及殺菌用膜片3的熱封，是相對於位在該突緣部22的上面 之最內層2 5而載置殺菌用膜片3後’依據必要而具備鴨嘴 形狀的突出部，可使用並進行環狀的熱封環。熱封溫度是 雖然可藉由多層容器2的最內層2 5和殺菌用膜片3的材料構 成等而適宜決定，但是亦可設定成170〜23〇 °C左右，設定 -16- 200528364 (14) 成1 8 0〜2 1 0 °C左右較佳。 然後，在開封第3圖所示的本實施形態的殺菌用包裝 體1的情況，如第4圖〜第6圖所示，包含殺菌用包裝體1之 至少其中最內層25的層，是不須要在該最內層25內的層內 剝離’另外，和殺菌用膜片3的熱封部2 3及最內層2 5是構 成一體性地往殺菌用膜片3側移動。 首先，第4圖是顯示藉由最內層25和下一層26的層間 剝離’而最內層25移動至殺菌用膜片3側並加以開封的形 · 態之部分剖面圖。該情況，根本上是最內層2 5和下一層2 6 構成基礎。另外，在3層構成的情況，不特別限制下一層 26的厚度，例如，可設定成5〜200 μιη左右，該下一層26 是構成調整和最內層2 5的剝離強度之層。 接著，第5圖是顯示藉由下一層26和下下層27的層間 之層間剝離，而最內層2 5移動至殺菌用膜片3側並加以開 封的形態之部分剖面圖。該情況，是藉由最內層2 5和下一 層26構成一體並移動至殺菌用膜片3側，而開封有殺菌用 鲁 包裝體1。下一層26的厚度是不太厚者較佳，例如，設定 成5〜30μπι左右較佳。 然後，第6圖是顯示下一層26藉由在該下一層26內的 內聚破壞而剝離，且最內層25和下一層26的其中一部分 2 6a構成一體而移動至殺菌用膜片3側並加以開封的形態 之部分剖面圖。因此，下一層的另一部分26b是殘留在多 層容器2的突緣部22。而且，作爲進行有層內內聚破壞而 剝離的下一層26之厚度，是雖然不特別地限制，但是可設 -17- 200528364 (15) 定成5〜ΙΟΟμηι左右。 此處，作爲在上述的形態之最內層2 5的厚度’是雖然 可藉由開封的形態或種類而適宜決定，但是例如’可設定 成3〜ΙΟΟμηι左右。 而且，在本實施形態中，雖然顯示製作成在熱封的最 內層2 5之熱封部2 3的產生切邊的形態，例如，如後述’在 多層容器2的最內層25，亦可製作成相對於熱封部23的內 側而形成切入部，另外，對應於其他的開封之形態’最內 ® 層25的厚度是可適宜決定。因此，最內層25的厚度是在熱 封時的最內層25之切邊的情況，如果考慮最內層25之樹脂 的種類、多層容器2的尺寸等，一般設定成5〜40 μπι，較 佳亦可設定成5〜20μιη。 另外，爲了製作成可將最內層25和下一層26、下一層 26和下下層27之層間剝離，但是亦可製作成如各個的層間 之層間剝離強度構成在2〜20Ν/15 mm左右，將構成各層 的樹脂材料、或樹脂組成物組合。 · 如此之樹脂材料的組合，雖然已經有許多的提議，但 是例如，可在最內層25/下一層26、或下一層26/下下層27 ，分別例示聚丙烯/聚丙烯內包含聚乙烯10〜50質量％、 聚丙烯/高密度聚乙烯（HDPE)等。 接著’作爲將下一層2 6製作成可層內內聚破壞而給予 易剝離性的手段，已知有許多的周知手段。例如，列舉有 在聚丙烯內由含有5〜50質量％低密度聚乙烯、乙燒—（甲 基）丙燒酸異分子聚合物、乙條-（甲基）丙嫌酸酯異分子 -18- (16) (16)200528364 聚合物、乙烯-（甲基）丙烯酸-無水順丁烯二酸異分子聚 合物、乙烯-酢酸乙烯異分子聚合物、熱可塑性彈性體的 樹脂組成物所組成的層。在該情況，層內剝離強度如構成 2〜20N/15mm左右的樹脂之選擇較佳。 根據上述的形態之本發明的殺菌用包裝體1，可發揮 如下所示的效果。 (1) 在殺菌用包裝體1中，包含多層包裝體的多層容器 2之至少其中最內層25的層，因爲製作成移動剝離至殺菌 鲁 用膜片3側，所以並不限制對形成多層容器2的最內層25之 熱可塑性樹脂的選擇，而重視與殺菌用膜片的熱封性且可 選定。另外，不管殺菌用氣體的種類，而可殺菌處理，特 別是，即使如蒸氣處理的高溫處理也可充分地應付。 另外，因爲在多層容器2與殺菌用膜片3的接著時不使 用接著劑，所以也不必擔心在如蒸氣處理的高溫處理之接 著劑的附著、污染。 而且，即使以夠高的接著強度來接著多層容器2與殺 鲁 菌用膜片3的熱封，也可給予易開封性。另外’並不被限 制對構成多層容器2的最內層2 5之熱可塑性樹脂而可任意 地控制殺菌用包裝體1的開封強度。 (2) 另外，上述的剝離如果發生在多層容器2的最內層 25和下一層26的層間、下一層26的層內、下一層26和下下 層2 7的層間之任一處，可使殺菌用包裝體1的易開封性更 良好，並且藉由構成材料或厚度等、籌畫各層的構成，而 構成能任意地選擇在多層容器2的剝離位置。 -19- 200528364 (17) (3) 上述的多層容器2的最內層25如果藉由熔點1 l〇°C 以上的聚烯烴系樹脂而構成，構成對耐熱性、耐藥品性優 異的殺菌用包裝體1，構成即使高溫的蒸氣處理也可充分 應付。 而且，該最內層2 5如果組合藉由熔點1 1 0 °C以上的聚 烯烴系樹脂而構成的多層容器2、及由熔點1 1 0°C以上的熱 可塑性樹脂所構成的殺菌用膜片3，除了對耐熱性、耐藥 品性優異之外，構成可提供即使高溫的蒸氣處理也可更適 # 當地加以應付的殺菌用包裝體1。 (4) 爲了將多層包裝體主體的形狀作成容器形狀，所 以可對使用性或收納性優異，並且對包裝的物品之形狀簡 便地應付。 例如，在被包裝物品爲注射器等的情況，將該多層容 器2可做成爲了容易收納該注射器等的被包裝物品，所以 可相對於底面部而配合該被包裝物品的形狀且任意地形成 1個乃至複數個凹部等。 Φ 而且，本發明是不限定於上述的形態，在達成本發明 的目的之範圍內的變形、改良等是包含在本發明。 例如，在上述的實施形態，雖然顯示僅熱封部23的內 側切邊的形態，但是不限定於此，在熱封部23未達到突緣 部22之端的情況，是如第7圖所示，亦可製作成熱封部23 之靠近該內側和外側的位置都加以切邊。 在上述的形態，是關於開封時之剝離的形態，雖然具 體性地列舉3例而說明，但是本發明的殺菌用包裝體1，是 -20- 200528364 (18) 在該包裝體1的使用開封時，亦可包含和多層容器2的殺菌 用膜片3之熱封部23之至少其中最內層25移動到殺菌用膜 片3側。因此，亦可藉由構成多層容器2的樹脂之選定、層 厚度’而即使使此等的剝離形態複合之剝離形態亦可。 另外’在上述的實施形態，是雖然製作成多層容器2 的最內層25之中，熱封部23發生切邊，而包含該最內層25 的層移動剝離至殺菌用膜片3，顯示被加以開封的形態， 但是並不限定於此，例如，如第8圖及第9圖所示，在多層 · 容器2的最內層25是亦可製作成相對於熱封部23的內側而 形成周狀的切入部3 0。 而且，在以下的說明，關於和已說明的部分或構件等 之同樣的部分或構件等，添附同樣符號而省略其說明。 第8圖是顯示本發明的殺菌用包裝體1之其他的實施形 態圖’關於作爲構成該殺菌用包裝體1的多層包裝體主體 的多層容器2，顯示相對於最內層2 5的熱封部2 3的內側而 形成周狀的切入部3 0之形態的立體圖。 鲁 而且，本形態是在最內層2 5和下一層2 6的層間發生剝 離’將該最內層25移動至殺菌用膜片3側而被加以開封的 形態作爲例示。 另外，第9圖是顯示在第8圖的IX — IX剖面圖，分別 顯示有（A)是開封前的狀態之剖面圖、（B)是開封後的狀態 之剖面圖。 在本實施形態，切入部30是形成有將剖面形狀作成V 字狀。切入部3 0是可作成其他、U字狀、矩形狀等之任意 -21 - 200528364 (19) 的各種形狀。另外，切入部3 0的深度’是在第9圖，雖然 顯示未達下一層2 6且至最內層2 5的形態’但是例如’如果 達到下一層2 6，就可確實地進行剝離。 然後，在開封之際，當拉上殺菌用膜片3時，構成在 多層容器2的最內層25和下一層26之層間發生剝離’並且 在該剝離達到該切入部3 0的時點，包含該最內層2 5之層移 動到殺菌用膜片3，而被開封。 製作成如此，在本發明的殺菌用包裝體1中，如果在 馨 多層容器2的熱封部23的內側構成具有周狀的切入部30 ’ 除了上述的（1)〜（4)的效果之外，在最內層25剝離並移動 到殺菌用膜片3時，構成可適於在熱封部23中藉由切斷的 開封，可發揮所謂能擴大多層包裝體主體的多層容器2和 殺菌用膜片3之更寬廣的組合之範圍的效果。 而且，第9圖，是在最內層25和下一層26的層間發生 剝離，雖然顯示該最內層25移動到殺菌用膜片3側並被加 以開封的形態，但是剝離，是例如在下一層26的層內之剝 · 離 '或下一層26和該下一層26相接的下下層27的層間之剝 離等’也可發揮同樣的效果。 其他，在本發明之實施的具體性的構造及形狀等，在 W達成本發明之目的的範圍內亦可作爲其他的構造。 接著，雖然列舉實施例及比較例而更詳細說明本發明 ’但是本發明是不被限於任何此等的實施例等之記載內容 〔實施例1〕 -22- (20) 200528364 藉由混合擠壓成形法，而成形了由接著的最內層（A)/ 下一層（B)/下下層（C)所組成的層疊體（多層膜片）。 而且，在本說明書中，分別依據於密度是JIS K6 92 2 ，MFR是JIS K7210，熔點是JIS K7122而測定之値。 最內層（A):丙烯-乙烯不規則異分子聚合物〔品名 :IDEMITSU PP F744NP(出光石油化學（股份有限公司）製） ，熔點135t，MFR(熔體流體速率（melt flow rate)之略稱 ，以下同）6.4g/10分〕層厚度ΙΟμπι， φ 下一層（Β):由將同元聚丙烯〔品名：IDEMITSU PP E3 04GP(出光石油化學（股份有限公司）製），熔點=162°C ，MFR: 3.0g/10分〕以50質量％、及將低密度聚乙烯〔品 名：NOVATECHHE30(日本聚乙烯（股份有限公司）製），熔 點：108°C，MFR : 0.3g/10分〕以50質量％所組成的樹脂 組成物層厚度1〇〇μπι， 下下層（C):由將同元聚丙烯〔品名：IDEMITSU PP E3 04GP(出光石油化學（股份有限公司）製），熔點：162°C φ 〕以90質量％、及將低密度聚乙烯〔品名：NOVATECH LD HE30(日本聚乙烯（股份有限公司）製），熔點：108°C， MFR : 0.3 g/10分〕以10質量％所組成的樹脂組成物層厚 度 240 μπι，200528364 (1) IX. Description of the invention [Technical field to which the invention belongs] The present invention relates to a sterilization package. [Prior art] In the past, when storing medical materials, medical devices, food, and other items, they were package bodies in the shape of containers, films, or membranes; and microorganisms that were impermeable to bacteria and the like and could be used for sterilization The above-mentioned articles are inserted and arranged between the sterilizing films having a gas permeation function, and a sterilizing package in which the sterilizing film is heat-sealed in a package can be used. The sterilization package ′ is thereafter configured to be treated with a sterilization gas such as ethylene oxide, hydrogen peroxide, or steam. In addition, the conventionally used sterilization package is a package provided with an adhesive layer on the sealing surface of the sterilization film because of heat-sealing property. However, in such a package, a sterilization gas is ensured. Permeability, it is necessary to partially apply the adhesive. On the other hand, such a package has many restrictions in terms of the application of the adhesive and the permeation of the sterilizing gas, so it has practical problems, and it is expected to be improved. On the other hand, the heat-sealing adhesive sheet heat-seals the sterilizing film on the flange portion of the peripheral portion of the main body of the cup-shaped container provided in the package body, and when opened, the adhesive is It is proposed to use a packaging structure that uses an adhesive that remains on both the sterilizing film and the main body of the package (for example, Japanese Patent Laid-Open Nos. 2 0 1-3 1 1 4 6). Such a packaging structure 'is, in particular, hot compared to the case where the adhesive is used as the innermost container -4- 200528364 (2) Sealing the sterilizing film. FIG. 10 is a cross-sectional view illustrating a state when the packaging structure 1 ο 〇 of the above-mentioned previous example is opened. As shown in FIG. 10, it is formed in the innermost layer 201 of the container 200 composed of the innermost layer 201, the lower layer 202, and the lower layer 203, and the adhesive layer 2 0a is used for sterilization. The film sheet is on the 300 side, and the adhesive layer 201b is fabricated on the container 200 side, and is unsealed by peeling in the layer of the adhesive layer 201. For this reason, as the adhesive, it is a resin constituting peeling which is limited in the layer. Then, generally, the resin to be peeled off in the layer is produced by containing a resin having weak strength or a resin having low heat resistance to maintain its characteristics. However, in the previous packaging structure as described above, the adhesive layer formed on the container side is necessary to cohesively destroy the adhesive layer itself when peeling, so it must have low strength and heat resistance as an adhesive. There is a problem that the types of so-called adhesives that can be used are greatly limited. In addition, in recent years, in addition to the sterilization treatment in the form of room temperature gas sterilization, high-temperature steam autoclaves (aut 〇c 1 ave). The previous packaging structure described above uses ethylene oxide or hydrogen peroxide as a sterilizing gas. Although the sterilization process is performed at normal temperature, although there are few special problems, it is used in a high-temperature steam autoclave. In the case of sterilization, there is a problem that it is not applicable from the point of heat resistance. Then, in the conventional packaging structure, since the adhesive layer was a necessary structure, when the sterilization treatment was performed, even if -5-200528364 (3) the sterilization treatment was processed, the object was treated. Adhesion to the main body of the package or contamination caused by the adhesive. In addition, the openability at the time of use also has a problem of a so-called bad opening feeling. In actual conditions, there is a problem that a satisfactory sterilization package cannot be obtained. [Summary of the Invention] Therefore, the object of the present invention is not to limit the selection of the thermoplastic resin forming the innermost layer of the multilayer package body, but to attach importance to the heat-sealability of the film for sterilization and to select sterilization. Among the packages, the sterilization treatment, in particular, can be adequately dealt with even at a high temperature treatment such as steam treatment, and there is no need to worry about the adherence to the package body at the time of the high temperature treatment, or A sterilization packaging body contaminated with an adhesive agent. In order to solve the above-mentioned problems, the sterilization packaging body of the present invention is a packaging body constructed by heat-sealing a multilayer packaging body composed of a thermoplastic resin and a sterilization film. It is characterized in that when the sterilizing film is peeled from the multilayer package main body and opened, the layer including at least the innermost layer of the multilayer package main body can be removed and moved to the sterilizing film side. As described above, the sterilization package of the present invention has a multilayer package body as a multilayer structure, and the packaged object is inserted and arranged between the multilayer package body and the sterilization membrane, and the outer peripheral portion is heat-sealed into a circumferential shape (and Heat agrees. The same applies hereinafter) to produce a sterilization package. Then, when the package is unsealed, at least 6-200528364 of the main body of the multilayer package (4) At least the innermost heat-adhesive portion is configured to be removable and easily peeled and unsealed to the side of the sterilizing film, and provides A sterilization package for a strong heat-sealing sterilization film. Here, the "innermost layer" in the multilayer package body is the layer located on the innermost surface of the multilayer package body. It can also be said to be a layer that can be heat-sealed with the sterilizing film. In the present invention, If at least the innermost layer of the multilayer package main body and the heat-sealed portion of the sterilizing film are also formed, integrated and moved to the sterilizing film side at the time of opening, the form of peeling is not particularly limited. φ Therefore, for example, as the form of peeling, peeling between the innermost layer of the multilayered package body and the next layer in contact with the innermost layer, peeling in the layer of the next layer, or peeling of the next layer and the layer Peeling occurs between layers of the next lower layer that are next to each other, or these several bonds. That is, in addition to the interlayer between the inner layer and the next layer, the next layer or the lower layer can be made as a multilayer structure, and interlayer peeling occurs between the layers. In other words, if the layer including the innermost layer which can be heat-sealed with the sterilizing film can be peeled off to form a unitary structure and move to the sterilizing film side, there is no problem. In addition, the shape of the main body of the multilayer package is not particularly limited. For example, although it can be formed into a film shape or a film shape, it is particularly preferable to form a container shape in which a flange portion is formed on the peripheral edge of the opening portion. According to the sterilization package of the present invention having such a configuration, since the innermost layer including at least one of the multilayer package main bodies can be removed and moved to the sterilization film side, the thermoplastic resin forming the innermost layer of the multilayer package main body The choice of is not particularly limited, and the heat-sealability (heat-adhesiveness) with the sterilizing film can be considered and selected. However, irrespective of the type of sterilizing gas, 200528364 (5) can be sterilized, and in particular, it can sufficiently cope with even high-temperature processing such as steam treatment. In addition, since it is not necessary to use an adhesive during the bonding of the multilayer package body and the sterilizing film, there is no need to worry about adhesion or contamination of the adhesive even at high temperature processing such as steam treatment. In addition, even if the heat-sealing of the multilayer package body and the sterilizing film is adhered with a sufficiently high sealing strength, the easy-opening property can be imparted. In addition, the thermoplastic resin in the innermost layer of the multilayer packaging body is not limited, and the unsealing strength of the sterilization packaging body can be arbitrarily controlled. In the sterilization package of the present invention, it is preferable that the above-mentioned peeling occurs between the innermost layer and the next layer of the multilayer package body, the next layer, the next layer and the lower and lower layer. According to the present invention, the peeling of the sterilizing film and the multilayer package body is carried out at a specific position so that, for example, at least the innermost layer including the multilayer package body can be removed and moved to the sterilizing film side. The ease of opening as a good package can be increased, and the position of peeling can be arbitrarily selected by constructing the structure of each layer by constituting materials, thickness, and the like. The sterilization package of the present invention is preferably the innermost layer of the package body, which is composed of a polyolefin resin having a melting point of 1 1 Ot or more. According to the present invention, since the innermost layer of the multilayer package body is made of a polyolefin resin having a melting point in a specific range, a sterilization package excellent in heat resistance and chemical resistance is formed, and even a high-temperature vapor is formed. Treatment can also be fully coped with. -8- 200528364 (6) The sterilization package of the present invention is preferably a non-woven fabric composed of the above-mentioned sterilization film made of a thermoplastic resin having a melt I of 110 ° C or higher. According to the present invention, since the sterilizing film is made of a thermoplastic resin having a melting point of 110 t or more, a sterilizing package having excellent heat resistance and chemical resistance is formed. In particular, the above-mentioned innermost layer is combined with a multilayer package main body composed of a polyolefin resin having a melting point of 110 °: or more, and the structure can be more appropriately handled even by high-temperature steam treatment. . The sterilization package of the present invention is preferably a container having the shape of the main body of the multilayer package. According to the present invention, since the shape of the multilayer package body is a container shape, it is excellent in usability and storage properties. For example, in order to easily store a packaged article such as a syringe, the multilayer package body can be made to face the bottom surface. It also has the advantage of being able to easily handle the shape of the packaged article in accordance with the shape of the packaged article and arbitrarily forming a container shape such as a plurality of recesses. ® The sterilization package of the present invention preferably has a cut-in portion formed in a peripheral shape with respect to the inner side of the heat-sealed portion of the above-mentioned multilayer package body. According to this invention, since it has a peripheral cut-in part inside the heat-adhesion part of a multilayer package main body, when the innermost layer is peeled and moved to the sterilizing film sheet, it is because the innermost part The cut of the layer is surely and easily constituted, so the constitution can be suitably opened, and the constitution can expand the range of the combination of the multilayer package body and the sterilizing film. 200528364 (7) [Embodiment] The present invention is a sterilization package obtained by heat-sealing a sterilization film on the outer peripheral portion of a multilayer package body made of a thermoplastic resin. In addition, when the multilayer packaging body constituting the sterilization packaging body of the present invention is to be unsealed and peeled, it is necessary to make a layer including at least its innermost layer movable toward the sterilization film side. Therefore, for this reason, for example, the innermost layer of the multilayer package body and the next layer may be peeled off, and the innermost layer may be moved together with a part of the next layer by cohesive peeling in the next layer. When the next layer and the lower layer are peeled off, and the next layer moves integrally with the innermost layer, or a composite peel such as 7E. By such peeling, even if the innermost layer of the multilayer package body and the sealing strength of the sterilizing membrane are high, good easy-opening properties can be ensured. Here, when the multilayer body of the multilayer package is used as the innermost layer / lower layer / lower layer of the laminated body, the innermost layer is a layer that can be heat-sealed with a sterilizing film to be described later, so it has heat-sealability (Poly) ene-based resins, such as homo polypropylene (HPP), random polypropylene (RPP), block polypropylene, etc. Polypropylene resins; polyethylene resins such as high-density polyethylene (HDPE) and low-density polyethylene (LDPE); or linear ethylene-α-distant molecular polymers are preferred. In addition, as the lower layer or lower layer, for example, a polyolefin resin such as a polypropylene (PP) resin, a polyethylene (PE) resin, or the like is preferred. For example, -10- 200528364 (8) 'Applicable to polypropylene Polypropylene fine resins such as HPP, irregular polypropylene (Rpp), group-linked polypropylene, or polyethylene resins such as tube density polyethylene (hdpe) and low density polyethylene (LDPE). In addition, depending on the use state, a polystyrene resin or the like containing a polystyrene resin and a rubber component for reinforcement can be used. In addition to these materials, inorganic fillers such as talc may be added. As a specific example of the case where the above-mentioned innermost layer / lower layer / lower layer is formed, when the interlayer peeling occurs between the innermost layer and the next layer, polypropylene storage / local density polyethylene can be cited. Layer composition of HDPE / polycarbonate resin, or layer composition of mixture with barrel density polyethylene (HDPE) / polypropylene + low density polyethylene (LDPE) / polyolefin resin. Here, the peel strength between the innermost layer and the lower layer is made smaller than the peel strength of the lower layer and the lower layer. In addition, in order to produce cohesive peeling in the next layer, a layer structure of polypropylene / polypropylene + ethylene-acrylate-anhydrous maleic acid heteropolymer / polyolefin resin, or high-density polyethylene is listed. (HDPE) / polypropylene + ethylene-acrylate-anhydrous maleic acid heteropolymer / polyolefin resin layer structure and the like. The shape of the main body of the multilayer packaging body can be selected according to the shape, type, size, etc. of the packaged article to be stored. For example, the shape of the main body of the multilayer packaging body can be formed into a film shape, a film shape, a container shape, etc. shape. The multilayer package main body constituting the sterilization package of the present invention is for storing even a container-shaped one in such a manner that a recessed portion or the like corresponding to the shape of the packaged object can be formed from the multilayer film by thermoforming. Department is better. -11-200528364 (9) In addition, according to the type or shape of the packaged object, there are several such buckets. In addition, as the main body of the multilayer package, it is not necessary to prevent bacteria from entering. The shape is, for example, a film shape, a film shape, or a container shape. However, when considering the situation, etc., it is preferable to form the shape of the container with the flange portion from the shape or the packaged object. Next, the sterilizing package of the present invention constitutes a microorganism having been heat-sealed with respect to the main body of the multilayer package as described above, and has a membrane having a so-called sterilizing function. The sterilizing membrane has fine pores, and the gaseousness (Gurley type densometer) is preferably 0. More preferably, it is about 0.5 to 1 000 seconds per 100 cc. For example, it can be measured based on JI S P 8 1 1 7. As the material of the sterilizing membrane, a membrane composed of a plurality of layers composed of a microporous film, a non-woven fabric, or the like may be used. In addition, a high-density polyethylene film sheet known by Tyvek under the trade name of DuPont can be used. Among the sterilizing film constituting the body, among these, a non-woven fabric made of a thermoplastic resin is particularly preferred. When the thermoplastic resin is used as a sterilizing film and is made of heat-resistant non-woven fabric, it can be provided from one to the undercharged part, and it is necessary to have air permeability. Although it must be mentioned above, it can be used for medical use. The membrane for sterilization is based on the viewpoint that the sterilization membrane can not pass gas such as bacteria and other gases. If the Gurley type is used for 1 to 2000 seconds per 100 cc, the air permeability is an example of sterilization paper and synthetic resin. φ can also be made as the "sale of towels" and 1 073 B "as the non-woven cloth for sterilization bags of the present invention, so that high-density polyethylene-12-200528364 (made of plastic resin) can be used. 10) Polymerization of irregular polyethylene (HDPE), low-density polyethylene (LDPE), linear low-density ethylene-α-ene heteropolymer (LLD PE), homopolypropylene, ethylene, etc. Olefin Fats; polyethylene terephthalate (PET) and other polyester resins; polyamide (nylon) resins; or a combination of such resin material. In addition, as the non-woven fabric, a heat-resistant resin may be used for a core layer such as a core layer, and a multi-layer non-woven fabric may be used for the surface layer. _ In addition, a composite nonwoven fabric composed of fibers composed of such thermoplastic resins and rayon fibers may also be used. In addition, a non-woven fabric composed of a thermoplastic resin is preferably a non-woven fabric having a melting point of 110 ° C or higher, particularly 120 ° C or higher. In particular, a non-woven fabric composed of a polyolefin resin composed of such a melting point is used. Better. The non-woven fabric having such a structure is used to form a sterilizing film excellent in heat resistance and chemical resistance, and this function can be imparted to a sterilizing package. In addition, when the sterilizing membrane is used as a non-woven fabric, it has the above-mentioned air permeability characteristics. As a measurement, it is preferably about 20 to 200 g / m2, and more preferably about 30 to 150 g / m2. . Then, the non-woven fabric used as the sterilizing film is made to prevent the mesh of the water supplier from clogging or the residual moisture in the package when the autoclave is sterilized by using high-temperature steam gas. It is more hydrophilic. Therefore, for example, in the case of a nonwoven fabric using a polyolefin-based resin, a corona treatment, a plasma treatment, an acid expansion system, or ^ -13-200528364 is applied to the nonwoven fabric. It is effective to introduce various hydrophilic treatment agents such as sorbitan and the like. These multilayer packaging bodies and sterilizing films are used for packaging articles to be packaged, and then sealed by heat-sealing them to form a sterilizing package. Here, the multilayer packaging and the sterilizing film are heat-sealed. In the case of a sheet, when the main body of the multilayer packaging body is in a film shape or a film shape, the multi-layer packaging body and the sterilizing film are superposed, and the peripheral portion can also be heat-sealed by a known heat sealing machine or the like. In the case where the main body of the multilayer package is a container shape, a sterilizing film may be placed on the peripheral edge of the opening portion of the container and on the upper surface of the formed flange portion, and may also be a known heat sealer or the like. Heat-seal the upper surface of the flange and the sterilizing membrane. The sterilization package thus obtained is sterilized by treating the packaged articles in the sterilization package with the sterilization gas. Examples of the sterilizing gas include ethylene oxide gas, hydrogen peroxide gas, and high-temperature vapor gas. These sterilizing gases pass through the inside of the package except the heat-sealed portion of the sterilizing film. Next, an embodiment of a sterilization package in the case where a multilayer container is used as the main body of the multilayer package will be described with reference to the drawings. Fig. 1 is a perspective view showing an example of an embodiment of a sterilization package 1 according to the present invention, and an example in which a multilayer container 2 is used as a multilayer package body. In the first figure, 1 is a sterilization package, 2 is a multilayer container, and 3 is a sterilization film. -14- 200528364 (12) The sterilizing film 3 is provided with a peripheral heat-sealing portion 23 provided to the flange portion 22 formed on the periphery of the opening portion 21 of the multilayer container 2 and heat-sealing it. Then, as shown in FIG. 1, for example, by pulling the sterilizing film 3 at the corner of the sterilizing package 1, the heat-sealed portion 23 is trimmed in the innermost layer 25 of the multilayer container 2, and The layer including the innermost layer 25 is removable to the sterilizing film 3 and can be opened. In addition, the multilayer container 2 in the present embodiment is a substantially rectangular tray-shaped container having a predetermined depth. As described above, the multilayer container 2 has a substantially rectangular opening 21, and the periphery of the opening 21 extends as described above. A flange portion 22 is formed on the outside. The multilayer container 2 of this shape is obtained by thermoforming a predetermined multilayer film composed of a layer structure described later. As a thermoforming method for forming the multilayer container 2, for example, a multilayer plug is stretched in advance into a mold cavity formed into the outer shape of the multilayer container 2 with a plug, and thereafter, air pressure can be used. Various thermoforming methods such as a plug assist forming method such as forming or vacuum forming the shape of a container. Fig. 2 is a cross-sectional view taken along the line II-I [of the sterilization package 1 of Fig. 1 before unsealing. As shown in FIG. 2, the multilayer container 2 is composed of an innermost layer 25, a lower layer 26, and a lower lower layer (base layer) 27. In this embodiment, examples of the resin material constituting the innermost layer 25 include homopolypropylene (HPP), irregular polypropylene (RPP), group-linked polypropylene, and high-density polyethylene (HDPE). Ethylene resins such as linear ethylene-α-ene isomeric polymers. In addition, in this embodiment, (13) 200528364 layer 26 below the layer in contact with the innermost layer 25 and lower layer 27 (base layer) below the layer in contact with the next layer 26 are, for example, usable Polyolefin resins such as polypropylene (PP) resins and polyethylene (PE) resins; or resin materials in which the polyolefin resins are mixed, and these resin materials may correspond to the unsealed state. Suitable for selection. Then, in this embodiment, the sterilizing film 3 that can be heat-sealed with the flange portion 2 2 of the multilayer container 2 is, for example, a microporous film composed of sterilizing paper and synthetic resin; a nonwoven fabric, etc. Yes, it is preferable to use a non-woven fabric made of a thermoplastic resin. In addition, the nonwoven fabric is preferably composed of a polyolefin resin having a melting point of 110 ° C or higher, particularly 120 ° C or higher, and is particularly preferably subjected to a hydrophilic treatment such as a corona treatment. Hereinafter, the unsealed state of the sterilization package 1 of the present invention will be described with reference to Figs. 3 to 6. Fig. 3 is a partial cross-sectional view of the sterilization package 1 according to this embodiment, showing a state (state before opening) after heat-sealing the innermost layer 25 of the multilayer container 2 and the sterilization film 3. As shown in FIG. 3, the heat-sealed portion 23 is formed between the innermost layer 25 # located above the flange portion 22 formed as the multilayer container 2 and the sterilizing membrane 3 to constitute the heat-sealed portion 23. The entire periphery of the flange portion 22 provided on the peripheral edge of the opening portion 21 formed in the multilayer container 2 is covered. The heat-sealing of the flange portion 2 2 and the sterilization diaphragm 3 formed on the periphery of the opening portion 21 of the multilayer container 2 is carried with respect to the innermost layer 25 located on the upper surface of the flange portion 22. After the sterilizing film 3 is placed, it can be provided with a duckbill-shaped protrusion as necessary, and a ring-shaped heat-sealing ring can be used. Although the heat-sealing temperature can be appropriately determined by the material configuration of the innermost layer 25 of the multilayer container 2 and the sterilizing diaphragm 3, etc., it can also be set to about 170 ~ 23 ° C, and -16-200528364 ( 14) It is better to be in the range of 1 80 to 2 0 ° C. Then, when the sterilization package 1 of the present embodiment shown in FIG. 3 is opened, as shown in FIGS. 4 to 6, the layer including at least the innermost layer 25 of the sterilization package 1 is It is not necessary to peel in the layer in the innermost layer 25. In addition, the heat-sealing portion 23 and the innermost layer 25 of the sterilizing film 3 are integrally moved to the sterilizing film 3 side. First, FIG. 4 is a partial cross-sectional view showing a state in which the innermost layer 25 is moved to the side of the sterilizing film 3 and opened by the interlayer peeling of the innermost layer 25 and the next layer 26 '. In this case, the innermost layer 2 5 and the next layer 2 6 form the basis. In the case of a three-layer structure, the thickness of the next layer 26 is not particularly limited. For example, it can be set to about 5 to 200 μm. The next layer 26 is a layer that adjusts and peels the innermost layer 25. Next, Fig. 5 is a partial cross-sectional view showing a state in which the innermost layer 25 is moved to the side of the sterilizing film 3 and opened by the interlayer peeling between the layers of the lower layer 26 and the lower layer 27. In this case, the innermost layer 25 and the next layer 26 are integrated and moved to the side of the sterilizing film 3, and the sterilizing package 1 is opened. The thickness of the next layer 26 is not too thick, for example, it is preferably set to about 5 to 30 m. Then, FIG. 6 shows that the next layer 26 is peeled off by cohesive failure in the next layer 26, and the innermost layer 25 and a part 2 6a of the next layer 26 are integrated to move to the side of the sterilizing membrane 3 And a partial cross-sectional view of the unsealed form. Therefore, the other portion 26b of the next layer is the flange portion 22 remaining in the multilayer container 2. In addition, although the thickness of the next layer 26 to be peeled off by cohesive destruction of the layer is not particularly limited, it can be set to -17-200528364 (15) to be about 5 to 100 μm. Here, although the thickness' of the innermost layer 25 in the above-mentioned form can be appropriately determined depending on the type or type of unsealing, for example, it can be set to about 3 to 100 μm. Moreover, in this embodiment, although the shape which produced the trimming edge in the heat-sealed part 23 of the innermost layer 25 of heat-sealing is shown, for example, as described later, 'in the innermost layer 25 of the multilayer container 2, The cut-in portion may be formed with respect to the inner side of the heat-sealed portion 23, and the thickness of the innermost layer 25 corresponding to other unsealed forms may be appropriately determined. Therefore, the thickness of the innermost layer 25 is the edge of the innermost layer 25 during heat sealing. If the type of the resin of the innermost layer 25 and the size of the multilayer container 2 are considered, it is generally set to 5 to 40 μm. It is also preferably set to 5 to 20 μm. In addition, in order to make the innermost layer 25 and the lower layer 26, the lower layer 26 and the lower lower layer 27 can be peeled between layers, but it can also be made such that the peel strength between layers is about 2 ~ 20N / 15 mm. The resin material or resin composition constituting each layer is combined. · Although there have been many proposals for such a resin material combination, for example, the innermost layer 25 / lower layer 26 or the lower layer 26 / lower layer 27 may be exemplified by polypropylene / polypropylene containing polyethylene 10 ~ 50% by mass, polypropylene / high density polyethylene (HDPE), etc. Next, as a means for making the next layer 2 6 cohesive and cohesive to destroy the layer, and giving easy peelability, many well-known means are known. For example, polypropylene containing 5 to 50% by mass of low-density polyethylene, ethylene- (meth) propionic acid heteromolecular polymer, and ethyl- (meth) propionic acid isomeric molecule-18- ( 16) (16) 200528364 A layer composed of a polymer, an ethylene- (meth) acrylic acid-anhydrous maleic acid hetero-molecular polymer, an ethylene-galvanic acid hetero-molecular polymer, and a resin composition of a thermoplastic elastomer. In this case, it is preferable to select a resin having a peel strength within a layer of about 2 to 20 N / 15 mm. According to the sterilization package 1 of the present invention of the above-mentioned aspect, the following effects can be exhibited. (1) In the sterilization package 1, the layer of at least the innermost layer 25 of the multilayer container 2 including the multilayer package is made to move and peel to the side of the sterilization film 3, so it is not limited to the formation of multiple layers. The thermoplastic resin of the innermost layer 25 of the container 2 is selected, and the heat-sealability of the film for sterilization is important and can be selected. In addition, regardless of the type of the sterilizing gas, the sterilizing treatment can be performed, and in particular, a high-temperature treatment such as a steaming treatment can sufficiently cope with it. In addition, since the adhesive is not used when adhering the multilayer container 2 and the sterilizing film 3, there is no need to worry about adhesion or contamination of the adhesive at a high temperature treatment such as steam treatment. Moreover, even if the heat-sealing of the multilayer container 2 and the bactericidal film 3 is performed with a sufficiently high bonding strength, easy-opening properties can be imparted. In addition, 'the opening strength of the sterilization package 1 is not limited to the thermoplastic resin constituting the innermost layer 25 of the multilayer container 2 and is not limited. (2) In addition, if the above-mentioned peeling occurs between the innermost layer 25 and the next layer 26 of the multilayer container 2, the next layer 26, the next layer 26, and the lower layer 27 between the layers, The sterilization package 1 has better easy-opening properties, and the structure can be arbitrarily selected at the peeling position of the multilayer container 2 by structuring the structure of each layer by the constituent material, thickness, and the like. -19- 200528364 (17) (3) If the innermost layer 25 of the above-mentioned multilayer container 2 is composed of a polyolefin resin having a melting point of 110 ° C or higher, it will be used for sterilization with excellent heat resistance and chemical resistance. The package 1 is configured to be able to sufficiently cope with steam treatment even at a high temperature. In addition, if the innermost layer 2 5 is composed of a multilayer container 2 composed of a polyolefin resin having a melting point of 110 ° C or higher, and a sterilization film composed of a thermoplastic resin having a melting point of 110 ° C or higher In addition to being excellent in heat resistance and chemical resistance, the sheet 3 constitutes a sterilization package 1 capable of providing more suitable treatment even with high-temperature steam treatment. (4) In order to make the shape of the main body of the multilayer package into a container shape, it is excellent in usability and storage properties, and it is easy to handle the shape of the packaged article. For example, when the packaged article is a syringe or the like, the multilayer container 2 can be made to easily accommodate the packaged article such as the syringe, so it can be arbitrarily formed to fit the shape of the packaged article with respect to the bottom surface. And even a plurality of recesses. Φ The present invention is not limited to the above-mentioned forms, and modifications, improvements, and the like within the scope of achieving the object of the present invention are included in the present invention. For example, in the above-mentioned embodiment, although the shape of only the inner side of the heat-sealed portion 23 is shown, it is not limited to this. The case where the heat-sealed portion 23 does not reach the end of the flange portion 22 is shown in FIG. 7. It is also possible to make the heat-sealed portion 23 near the inner and outer sides and trim the edges. The above-mentioned form relates to the form of peeling at the time of opening. Although three examples are specifically described, the sterilization package 1 of the present invention is -20-200528364. (18) Use of the package 1 is opened. In this case, at least the innermost layer 25 of the heat-sealed portion 23 including the sterilizing film 3 of the multilayer container 2 may be moved to the sterilizing film 3 side. Therefore, it is also possible to select a resin constituting the multilayer container 2 and the thickness of the layer to form a peeling form in which these peeling forms are combined. In addition, in the above-mentioned embodiment, although the innermost layer 25 of the multilayer container 2 is manufactured, the heat-sealed portion 23 is trimmed, and the layer including the innermost layer 25 is moved and peeled off to the sterilizing film 3, showing The unsealed form is not limited to this. For example, as shown in FIG. 8 and FIG. 9, the innermost layer 25 of the multilayer container 2 can be made to the inside of the heat-sealed portion 23. A peripheral cut 30 is formed. In the following description, the same reference numerals are attached to the same parts or members as the already explained parts or members, etc., and the description thereof is omitted. Fig. 8 is a view showing another embodiment of the sterilization package 1 of the present invention. "The multilayer container 2 as the main body of the multi-layer package constituting the sterilization package 1 is shown with heat-sealing to the innermost layer 25. A perspective view of the form of the peripheral cut-in portion 30 inside the portion 23. Further, this embodiment is an example in which peeling occurs between the innermost layer 25 and the next layer 26, and the innermost layer 25 is moved to the side of the sterilizing film 3 and opened. Fig. 9 is a cross-sectional view taken along the line IX-IX in Fig. 8 and shows (A) a cross-sectional view of the state before opening and (B) a cross-sectional view of the state after opening. In this embodiment, the cut-in portion 30 is formed with a V-shaped cross-sectional shape. The cut-in portion 30 is various shapes that can be made into other shapes such as U-shape, rectangular shape, etc.-21-200528364 (19). In addition, the depth 'of the cut-in portion 30 is shown in FIG. 9. Although it shows a state where it does not reach the next layer 26 and reaches the innermost layer 25, for example, if it reaches the next layer 26, it can be reliably peeled. Then, when the sterilizing film 3 is pulled up during opening, peeling occurs between the innermost layer 25 and the next layer 26 of the multilayer container 2 and when the peeling reaches the cut-in portion 30, it includes The innermost layer 25 is moved to the sterilizing film 3 and is opened. In this way, in the sterilization package 1 of the present invention, if a cut-in portion 30 having a peripheral shape is formed inside the heat-sealing portion 23 of the multi-layered container 2, in addition to the effects (1) to (4) described above, In addition, when the innermost layer 25 is peeled off and moved to the sterilizing film 3, the multilayer container 2 and sterilization capable of enlarging the main body of the multilayer package can be made suitable for the unsealing by cutting in the heat-sealing portion 23 The effect of a wider range of combinations with the diaphragm 3. In addition, FIG. 9 shows a state in which the innermost layer 25 and the lower layer 26 are peeled off. Although the innermost layer 25 is moved to the side of the sterilizing film 3 and opened, it is peeled off, for example, on the next layer. The same effect can be exhibited by peeling and separation within 26 layers, or peeling between layers of the lower layer 27 where the next layer 26 is in contact with the next layer 26. In addition, the specific structure and shape of the implementation of the present invention can also be used as other structures within the scope of achieving the object of the present invention. Next, although the present invention will be described in more detail by citing examples and comparative examples, the present invention is not limited to the description of any of these examples and the like [Example 1] -22- (20) 200528364 by mixing extrusion The molding method forms a laminated body (multilayer film) composed of the innermost layer (A) / lower layer (B) / lower layer (C). In addition, in this specification, it is measured based on the density being JIS K6 92 2, the MFR being JIS K7210, and the melting point being JIS K7122. The innermost layer (A): propylene-ethylene irregular heteropolymer [Product name: IDEMITSU PP F744NP (Idemitsu Petrochemical (Co., Ltd.)), melting point 135t, MFR (melt flow rate) , The same below) 6. 4g / 10min] layer thickness 10μm, φ next layer (B): made of homopolypropylene [product name: IDEMITSU PP E3 04GP (manufactured by Idemitsu Petrochemical (Co., Ltd.)), melting point = 162 ° C, MFR: 3 . 0g / 10 minutes] 50% by mass and low density polyethylene [product name: NOVATECHHE30 (manufactured by Japan Polyethylene Co., Ltd.), melting point: 108 ° C, MFR: 0. 3g / 10 minutes] The thickness of the resin composition layer composed of 50% by mass is 100 μm, and the lower layer (C): made of homopolypropylene [product name: IDEMITSU PP E3 04GP (Idemitsu Petrochemical (Co., Ltd.) System), melting point: 162 ° C φ] 90% by mass, and low density polyethylene [product name: NOVATECH LD HE30 (manufactured by Japan Polyethylene Co., Ltd.), melting point: 108 ° C, MFR: 0. 3 g / 10 minutes] The thickness of the resin composition layer composed of 10% by mass is 240 μm,
然後’使用該多層膜片’而以1⑽mmx2〇〇mmx20mmH ，來將具有寬幅8mm的突緣部之附有突緣部多層容器採 用熱成形法而獲得。 相對於該附有突緣部多層容器的突緣部’而配列配置 -23- (21) 200528364 玻璃製注射器後’使用下述的熱封條件而熱封殺菌用膜片 的聚丙嫌不織布（親水性處理後）〔度量1 〇 〇 g / ηι2，格利式 透氣度1 5秒/1〇〇cc〕，並獲得本發明的殺菌用包裝體。 (熱封條件） 1 70°C 40kg/cm2 3 · 5秒 2次 密封溫度 密封壓力 時間 熱封的次數 〔實施例2〕 藉由混合擠壓成形而成形，除了使用由下述構成的最 內層（A)/下一層（B)/下下層（C)所組成的層疊體（多層膜片） 之外，是藉由與實施例1同樣的方法，而獲得本發明的殺 菌用包裝體。 最內層（A):丙烯-乙烯不規則異分子聚合物〔品名 鲁 :IDEMITSU PP F744NP(出光石油化學（股份有限公司）製） ，熔點 135°C，MFR6.4g/10分〕層厚度 ΐ〇μΐη， 下一層（Β):同元聚丙烯〔品名：IDEMITSU ΡΡ E3 04 GP(出光石油化學（股份有限公司）製），熔點162°C， MFR3.0g/10分〕70質量％、及乙烯—丙烯酸酯一無水順丁 烯二酸異分子聚合物〔品名：RECSPARL ET182(日本聚乙 烯（股份有限公司）製），密度937kg/m3，熔點·· 99°C，MFR :8g/l〇分〕30質量％的混合物層厚度30μιη， -24- 200528364 (22) 下下層（C):同元聚丙烯〔品名：IDEMITSU PP E 3 0 4 G P (出光石油化學（股份有限公司）製），熔點：1 6 2 °C ，MFR: 3.〇g/l〇 分〕層厚度 3 60μπι， 〔比較例1〕 藉由混合擠壓成形而成形，除了使用由下述構成的最 內層（Α)/下一層（Β)/下下層（C)所組成的層疊體（多層膜片） 之外，是藉由與實施例1同樣的方法，而獲得殺菌用包裝 鲁Then, using this multilayer film, a multilayer container with a flange portion having a flange portion having a width of 8 mm was obtained by thermoforming at 1 mm x 2000 mm x 20 mmH. Polypropylene non-woven cloth (hydrophilic) for heat-sealing sterilizing membranes using the following heat-sealing conditions (arranged with the flange portion of the multilayer container with flange portion -23- (21) 200528364) After the sexual treatment) [Measurement of 100 g / η2, Gurley-type air permeability of 15 seconds / 100 cc], and the sterilization package of the present invention was obtained. (Heat-sealing conditions) 1 70 ° C 40kg / cm2 3 · 5 seconds 2 times of sealing temperature Sealing pressure time Number of times of heat sealing [Example 2] Formed by mixing extrusion molding, except that the innermost portion having the following constitution is used A sterilization package of the present invention was obtained in the same manner as in Example 1 except that the laminate (multilayer film) composed of layer (A) / lower layer (B) / lower layer (C) was composed. Inner layer (A): propylene-ethylene irregular heteropolymer [Product name Lu: IDEMITSU PP F744NP (Idemitsu Petrochemical (Co., Ltd.)), melting point 135 ° C, MFR6.4g / 10 minutes] Layer thickness 层 〇 μΐη, next layer (B): homopolypropylene [product name: IDEMITSU PP E3 04 GP (manufactured by Idemitsu Petrochemical Co., Ltd.), melting point 162 ° C, MFR 3.0g / 10 minutes] 70% by mass, and ethylene —Acrylic ester anhydrous maleic acid heteromolecular polymer [Product name: RECSPARL ET182 (manufactured by Japan Polyethylene Co., Ltd.), density 937kg / m3, melting point · 99 ° C, MFR: 8g / 10 minutes] 30% by mass of the mixture layer thickness is 30μm, -24-200528364 (22) Lower and lower layer (C): homopolypropylene [product name: IDEMITSU PP E 3 0 4 GP (manufactured by Idemitsu Petrochemical Co., Ltd.), melting point: 1 6 2 ° C, MFR: 3.0 g / l0 minutes] Layer thickness 3 60 μm, [Comparative Example 1] Formed by mixing extrusion molding, except that the innermost layer (A) / The lower layer (B) / lower layer (C) is composed of a multilayer body (multilayer diaphragm), and In the same manner as in Example 1, a sterilization package was obtained.
B〇S 體。 最內層（A):接著性聚烯烴：樹脂〔品名：CMPS V70(DU PONT-MITSUI POLYCHEMICALS 製)，密度 920kg/m3，MFR: 8g/10 分〕層厚度 60μι*η， 下一層（Β)··同元聚丙燦〔品名：IDEMITSU ΡΡ E3 0 4GP(出光石油化學（股份有限公司）製），熔點i62°C， MFR: 3.0g/10 分〕層厚度 ΙΟΟμηι， 下下層（C):同元聚丙嫌〔品名：IDEMITSU ΡΡ 9 E3 0 4GP(出光石油化學（股份有限公司）製），熔點：162°C ，MFR: 3.0g/10 分〕層厚度 240μιη 〔試驗例1〕 將在實施例1、2及比較例1所得的容器形狀的殺菌用 包裝體，加以蒸氣殺菌處理（溫度1 1 0 °C，時間3 0分）而比 較·評價後。結果如表1所示。 而且，作爲評價的內容，是以目視來確認殺菌處理後 -25- (23) 200528364 之殺菌用包裝體的狀態。另外，以室溫來冷卻該殺菌用包 裝體後’將突緣部開口成1 5 m m寬度且以下述的測定方法 來測定開封強度，並且確認了剝離形態（所剝離之層的位 置，剝離形態）及開封感。 (開封強度的測定方法） 使用市售的拉伸試驗機，而以下述的條件來測定，將 測定峰値作爲開封強度。 剝離角度：1 3 0。 剝離速度：300mm/分 (結果)表1 3式驗後的殺 菌用包裝體 的狀態 開封強度 (註1) (Ν/15 mm) 剝離形態 剝離的觸 感 實施例1 良好 (沒有問題） —___/ 8.4 層間剝離 (註3) 滑順的開 封感 實施例2 良好 7.5 第2層的內聚 滑順的開 _(沒有問題） 剝離 封感 比較例1 不良（註2) 18.2 最內層（表面 層）的內聚剝 離（層內剝離） 稍微牢固 的開封感 (註1)冷卻到室溫後測定。 (δ主2)導致殺菌膜片的一部分剝離，無法承受蒸氣殺菌。 (註3 )在最內層和下一層的層間剝離。 (24) (24)200528364 (殺菌處理後的殺菌用包裝體的狀態） 如表1所示，實施例1及2的殺菌用包裝體，關於殺菌 處理後的外觀，也看不出任何的變化且良好。另一方面， 在比較例1的殺菌用包裝體，在密封部的一部分可看見剝 離。而且，在任一個殺菌用包裝體，在內部有水的殘留是 實質上不被認可。 接著，開封強度及剝離形態，實施例1及2的殺菌用包 裝體，實施例1是8.4N/15mm(最內層和下一層的層間剝離）馨 ，實施例2是7.5N/15mm(下一層的內聚剝離）。另外，兩者 皆顯示滑順的開封性，由此等的結果，可確認作爲殺菌用 包裝體是最佳的。 相對於此，比較例1的殺菌用包裝體的開封強度是大 到1 8 · 2N/ 1 5 mm，另外，最內層的接著性樹脂，是在開封 時發生內聚破壞且位在突緣部和殺菌用膜片的兩方的剝離 形態。另外，顯不稍微牢固的開封感，從此等的結果，也 可得知作爲殺菌用包裝體是較不佳。 φ 【圖式簡單說明】 第1圖是顯示本發明的殺菌用包裝體的一實施形態的 立體圖。 第2圖是上述第1圖的Π — Π剖面圖。 第3圖是上述第1圖的重要部，且顯示熱封後（開封前） 的狀態的放大剖面圖。 第4圖是顯示開封狀態的一形態的放大剖面圖。 -27- (25) 200528364 第5圖是顯示開封狀態之其他的形態的放大剖面圖。 第6圖是顯示開封狀態之另一個形態的放大剖面圖。 第7圖是顯示殺菌用包裝體的開封狀態之其他的形態 圖，且顯示熱封部之靠近內側及外側的位置被切邊形態的 部分剖面圖。 第8圖是顯示本發明的殺菌用包裝體之其他的實施形 態圖，且在多層容器的突緣部製作周狀的切入部之形態的 立體圖。 第9A圖是上述第8圖的IX — IX剖面圖，且顯示開封 前的狀態圖。 第9B圖是上述第8圖的IX_ IX剖面圖，且顯示開封 後的狀態圖。 第1 〇圖是顯示先前例的開封狀態的放大剖面圖。 【主要元件符號說明】 1 :殺菌用包裝體 2 :多層容器 3 :殺菌用膜片 2 1 :開口部 2 2 :突緣部 2 3 :熱封部 25 :最內層 2 6 :下一層 26a :下一層的其中一部份 -28- (26) (26)200528364 26b :下一層的另一部份 27 :下下層（底層） 3 0 :切入部 1〇〇 :包裝構造 200 :容器 2 0 1 :最內層（接著劑層） 201a :接著劑層B〇S body. Inner layer (A): Adhesive polyolefin: resin [product name: CMPS V70 (manufactured by DU PONT-MITSUI POLYCHEMICALS), density 920kg / m3, MFR: 8g / 10 minutes] layer thickness 60μm * η, next layer (B) ·· Dongyuan Polypropylene [Product name: IDEMITSU PP E3 0 4GP (manufactured by Idemitsu Petrochemical (Co., Ltd.)), melting point i62 ° C, MFR: 3.0g / 10 points] Layer thickness 100 μm, the lower layer (C): the same Yuan polypropylene [Product name: IDEMITSU PP 9 E3 0 4GP (Idemitsu Petrochemical (Co., Ltd.)), melting point: 162 ° C, MFR: 3.0g / 10 points] Layer thickness 240μm [Test Example 1] The container-shaped sterilization packages obtained in 1, 2 and Comparative Example 1 were subjected to steam sterilization treatment (temperature 110 ° C, time 30 minutes), and after comparison and evaluation. The results are shown in Table 1. In addition, as a content of the evaluation, the state of the sterilization package after sterilization treatment was visually confirmed (-25) (23) 200528364. In addition, after cooling the sterilization package at room temperature, the flange portion was opened to a width of 15 mm and the unsealing strength was measured by the following measurement method, and the peeling form (position of the peeled layer, peeling form) was confirmed. ) And Kaifeng sense. (Measurement method of unsealing strength) Using a commercially available tensile tester, the measurement was performed under the following conditions, and the measured peak strength was used as the unsealing strength. Peeling angle: 1 3 0. Peeling speed: 300mm / min (Result) Table 1 Unsealing strength of the sterilization package after Type 3 inspection (Note 1) (N / 15 mm) Peeling morphology Example 1 Good (no problem) —___ / 8.4 Peeling between layers (Note 3) Smooth opening feeling Example 2 Good 7.5 Cohesive smooth opening of the second layer _ (no problem) Comparative example 1 of peeling sealing feeling Poor (Note 2) 18.2 The innermost layer (surface Layer) Cohesive peeling (in-layer peeling) A slightly firm opening feeling (Note 1) was measured after cooling to room temperature. (δ main 2) Part of the sterilization membrane is peeled off and it cannot withstand steam sterilization. (Note 3) Peel between the innermost layer and the next layer. (24) (24) 200528364 (state of sterilization package after sterilization treatment) As shown in Table 1, the sterilization package of Examples 1 and 2 did not show any change in the appearance after sterilization treatment. And good. On the other hand, in the sterilization package of Comparative Example 1, peeling was seen in a part of the sealing portion. In addition, in any sterilization package, the presence of water in the interior is not substantially accepted. Next, the unsealing strength and peeling form of the sterilization packages of Examples 1 and 2 are 8.4 N / 15 mm (peeling between the innermost layer and the next layer) of Example 1 and 7.5 N / 15 mm (lower) of Example 2 Cohesive peeling of one layer). In addition, both showed smooth openability, and from these results, it was confirmed that they are optimal as sterilization packages. In contrast, the unsealing strength of the sterilization package of Comparative Example 1 was as high as 18 · 2N / 15 mm, and the innermost adhesive resin was cohesive and broken at the time of unsealing and was located at the flange. The peeling form of both the part and the sterilizing membrane. In addition, a slightly strong unsealing feeling was not shown, and from these results, it was found that the packaging body was less suitable as a sterilization package. φ [Brief description of the drawings] Fig. 1 is a perspective view showing an embodiment of the sterilization package of the present invention. Fig. 2 is a sectional view taken along the line VII-II of the above-mentioned first view. FIG. 3 is an enlarged cross-sectional view of an important part of the above-mentioned FIG. 1 and showing a state after heat sealing (before opening). FIG. 4 is an enlarged cross-sectional view showing one form of the unsealed state. -27- (25) 200528364 Figure 5 is an enlarged cross-sectional view showing another aspect of the unsealed state. Fig. 6 is an enlarged sectional view showing another form of the unsealed state. Fig. 7 is another sectional view showing the unsealed state of the sterilization package, and is a partial cross-sectional view showing a state where the heat-sealed portion is cut near and inside. Fig. 8 is a perspective view showing another embodiment of the sterilization package according to the present invention, and a form in which a peripheral cut-in portion is formed on the flange portion of the multilayer container. Fig. 9A is a cross-sectional view taken along the line IX-IX in Fig. 8 and shows the state before opening. Fig. 9B is a sectional view taken along the line IX_IX in Fig. 8 and shows the state after opening. FIG. 10 is an enlarged cross-sectional view showing the unsealed state of the previous example. [Description of main component symbols] 1: sterilization package 2: multilayer container 3: sterilization membrane 2 1: opening 2 2: flange portion 2 3: heat-sealed portion 25: innermost layer 2 6: next layer 26a : One part of the next layer-28- (26) (26) 200528364 26b: The other part of the next layer 27: The lower layer (bottom layer) 3 0: Cut-in section 100: Packaging structure 200: Container 2 0 1: innermost layer (adhesive layer) 201a: adhesive layer
2 0 1 b :接著劑層 H 202 :下一層 2 0 3 :下下層 3 00 :殺菌用膜片2 0 1 b: Adhesive layer H 202: Next layer 2 0 3: Lower layer 3 00: Sterilizing film
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