200920596 九、發明說明： 【發明所屬之技術領域】 本發明係與多層片材'使用此多層片材而成形之容器 及使用此容器而成之包裝體有關。 【先前技術】 先前’在處理水產加卫品或設計等之填充•鎖售礙商方 面，作為容器係多使用金屬罐。 就金屬罐之長處而言，可舉出：⑴液體、氣體、光線 之截斷性大，可作長期保存(1年以上)；(2)熱與電傳導性 佳’加熱•冷卻效率良好；（3)由於堅固且具有剛性，因此 可進行大量裝載與大量輸送；⑷可以常溫進行高溫且高精 度之成形加工等。 另一方面，就金屬罐之短處而言’可舉出：〇)由於比 重大且重’因此輸送•操作困難；⑺由於金屬與内容物及 外部濕氣產生反應，因此需要防蝕對策；⑺容器形狀為一 定（譬如，圓柱型），令消費者厭煩；（4)内容完全看不見， 有引發消費者不安的可能性等。 再者’除了此類問題之外，並因近年來之對環保議題的 重視，故注重脫金屬化的廠商不斷增多。 譬如，在文獻1(曰本特開2000_2573 1號公報）中揭示如下 技術.在由樹脂所構成之疊層體設氣體阻隔層，藉由包覆 氣體阻1¾層之端部而使密封性提昇。 然而，在前述文獻1中，密封性雖有若干提昇，但並未 實現足以達成金屬罐之替代程度的氧阻隔性。 132349.doc 200920596 因此，本發明之目的在於，提供—種多層片材、容器及 包裝體’其係具有等同金屬罐之氧阻隔性，與具備易開封 性、密封性及耐熱性者。 【發明内容】 本發明之多層片材的特徵為：其係包含基材層、及疊層 於此基材層之一方之面側的最外層而構成者；前述最外層 • 係以至少3層所形成，包含：水分吸收接著劑層，設於與 , 前述基材層接觸之側；阻隔層，設於此水分吸收接著劑層 之與前述基材層的相反側；及聚烯烴層，設於此阻隔層之 與前述水分吸收接著劑層的相反側。 本發明之多層片材係以基材層與最外層所形成，在使此 多層片材成為容器之情形，基材層係以位於内容物側之方 式成形。又，最外層係以至少3層所形成，以在接觸於基 材層之側為水分吸收接著劑層、在比水分吸收接著劑層更 外側為阻隔層、在比阻隔層更外側為聚烯烴層之方式形 V 成。此外’在此等層之間如設具有其他功能之層，譬如， 設具有保香性、耐藥性、遮光性、UV隔離性等之層亦 0 根據本發明，由於在最外層之接觸於基材層之側設有水 分吸收接著劑層，因此，在煮沸•殺菌熱處理上，以水分 吸收接著劑層進行吸收從外部侵入之水分，可防止到達基 材層。 又’阻隔層在煮沸.殺菌熱處理上，在吸濕後藉由時間 經過，釋出水分而恢復阻隔性能。因此，藉由將阻隔層設 132349.doc 200920596 於比水分吸收接著劑層更外側，而使阻隔層之阻隔性能恢 復得快。 精由以上，可提供—種氧阻隔性優良之多層片材。 本發明之多層片材之特徵為：其係包含基材層、及疊層 於此基材層之-方之面側的最外層而構成者；前述基材層 及前述最外層係分別以包含阻隔層之至少2層所形成。 阻隔層係以作為基材層及最外層之中間層而設為佳，在 使此多層片材成為容器之情形，係以設於比基材層之中央 更外側為佳。藉由此方式’在對容器進行凹痕（切痕）的加 工之際，可防止阻隔層之斷裂。 «本發明’由於在基材層與最外層分別設有阻隔層， 因此可發揮高氧阻隔性。 在本發明之多層片姑φ200920596 IX. Description of the Invention: [Technical Field of the Invention] The present invention relates to a multilayer sheet 'a container formed by using the multilayer sheet and a package body using the container. [Prior Art] Previously, metal cans were used as containers in the handling of fillings and locks for aquatic products or designs. As far as the advantages of the metal cans are concerned, (1) the liquid, gas, and light are highly cut off and can be stored for a long period of time (more than one year); (2) good thermal and electrical conductivity is good; heating and cooling efficiency is good; 3) Since it is strong and rigid, it can be loaded in a large amount and in a large amount; (4) It can perform high-temperature and high-precision forming processing at room temperature. On the other hand, in terms of the shortcomings of the metal cans, it can be mentioned that: because of the large weight and heavy weight, it is difficult to transport and operate; (7) since the metal reacts with the contents and external moisture, countermeasures against corrosion are required; (7) Containers The shape is certain (for example, cylindrical), which makes consumers bored; (4) the content is completely invisible, and there is the possibility of causing consumer anxiety. Furthermore, in addition to such problems, and due to the emphasis on environmental issues in recent years, there has been an increase in the number of manufacturers focusing on demetallization. For example, the following technique is disclosed in the document 1 (Japanese Unexamined Patent Publication No. Publication No. Publication No. 2000- No. No. No. No. No. No. No. No. No. No. No. No. No. No. No. No. No. No. No. No. No. No. No. No . However, in the aforementioned Document 1, although the sealing property is somewhat improved, the oxygen barrier property sufficient to achieve the substitution degree of the metal can is not achieved. Accordingly, it is an object of the present invention to provide a multilayer sheet, a container, and a package which have an oxygen barrier property equivalent to that of a metal can, and which have an easy-opening property, a sealing property, and heat resistance. SUMMARY OF THE INVENTION The multilayer sheet of the present invention is characterized in that it comprises a base material layer and an outermost layer laminated on one side of the base material layer; the outermost layer is at least three layers Formed to include: a moisture absorption adhesive layer disposed on a side in contact with the substrate layer; a barrier layer disposed on an opposite side of the moisture absorption adhesive layer from the substrate layer; and a polyolefin layer The barrier layer is on the opposite side of the moisture absorbing adhesive layer as described above. The multilayer sheet of the present invention is formed by a base material layer and an outermost layer, and in the case where the multilayer sheet is a container, the base material layer is formed on the side of the contents. Further, the outermost layer is formed of at least three layers so as to be a moisture absorbing adhesive layer on the side in contact with the substrate layer, a barrier layer on the outer side than the moisture absorbing adhesive layer, and a polyolefin on the outer side of the barrier layer. The shape of the layer is V. In addition, if a layer having other functions is provided between the layers, for example, a layer having a fragrance retention property, a drug resistance, a light shielding property, a UV isolation property, and the like is also provided. According to the present invention, since the outermost layer is in contact with Since the water absorbing adhesive layer is provided on the side of the base material layer, the water absorbing adhesive layer absorbs moisture intruding from the outside in the boiling/sterilization heat treatment, and can prevent the substrate layer from reaching. Further, the barrier layer is boiled and sterilized by heat treatment, and after the moisture absorption, the water is released to restore the barrier property. Therefore, the barrier property of the barrier layer is restored quickly by placing the barrier layer on the outer side of the moisture absorbing adhesive layer. From the above, a multilayer sheet excellent in oxygen barrier properties can be provided. The multilayer sheet of the present invention is characterized in that it comprises a base material layer and an outermost layer laminated on the side of the base material layer; the base material layer and the outermost layer are respectively included At least two layers of the barrier layer are formed. The barrier layer is preferably used as the intermediate layer of the base material layer and the outermost layer, and in the case where the multilayer sheet is a container, it is preferably provided outside the center of the base material layer. In this way, the breakage of the barrier layer can be prevented when the container is subjected to the process of dent (cutting). Since the present invention has a barrier layer provided on the base material layer and the outermost layer, it is possible to exhibit high oxygen barrier properties. In the multilayer film of the present invention
Aa 材中以在削述最外層之接觸於前述 土材.之側設有水分吸收接著劑層者為佳。 八：：本發明’由於在最外層之接觸於基材層之側設有水 接著劑層’因此，在煮滞·殺菌熱處理上，以水分 吸收接著劑層進行吸收從外 ^ 入之水分，可預防到達基 材層之阻隔層。基於此因’可防止藉 阻隔性之減低β κ及濕的氧 此可更知;幵多層片材之氧阻隔性。 在本發明之多層片材中，Λ 声之η以在别述聚烯烴層與前述阻隔 層之間设有水分吸收接著劑層者為佳。 之發明中，阻隔層係成為被以水分吸收接著劑層爽住 構成。如為如此般構成的話1以水分吸收接著劑層進 132349.doc 200920596 行吸收從外部侵入之水分，可防止水分到達阻隔層。亦 即’可更提昇阻隔層之氧阻隔性。 在本發明之多層片材中，前述阻隔層係以間茬二胺 (MXD)尼龍或乙烯.乙烯醇共聚合體(ev〇h)所形成為佳。 根據本發明，由於使用MXD尼龍或EV〇H作為阻隔層， 因此可提供一種氧阻隔性優良之多層片材。 - 在本發明之多層片材中，以在前述基材層之另一方之面 f·' 側疊層著剝離層者為佳。 剝離層與基材層之接著強度，係設為比藉由容器與蓋材 之熱密封的接著強度為小，而該容器係將此多層片材成形 而構成者。II由此方S，在將蓋材開封之時，可在剝離層 與基材層之間作層間剝離。因此，在易開封性優良的同 時’可使剝離表面變得美觀。 又，由於可使容器與蓋材之熱密封部分堅固接著，所以 密封性亦優良。 t 在本發明之多層片材中，在前述基材層，係以添加滑石 為佳。 π石係發揮將氧分子或氫分子之侵入作物理性封鎖的功 此因此，藉由在基材層添加滑石，而在提昇氧阻隔性的 同時並可防止水分侵入基材層。 又，可提高多層片材之剛性，可形成相較於金屬罐不遜 色的容器。 在本發明之多層片材中’前述最外層係以層壓用薄膜為 佳0 132349.doc 200920596 由於最外層可作為層壓 序省略化。 用溥臈而另仃製造，故可製造程 本發明之容器的特徵A，甘#H + h& 依為其係具有與蓋材接著用之凸緣 者；並將前述本發明之多層片材成形而成。 根據本發明，由於使用前述多層片材，故可提供一種發 揮同樣之效果的容器。 本：明之包裝體的特徵為，具備前述本發明之容器、及 '住刖述谷态之開口部的蓋材者；且於前述容器之凸緣部 接著有前述蓋材。 根據本發明，由於使用前述多層片材及容器，故可提供 一種發揮同樣之效果的包裝體。 【實施方式】 以下，根據圖式，對本發明之實施型態作說明。 首先，根據圖1、圖2及圖3 ,對本發明之第1實施型態作 說明。 [第1實施型態] (1)多層片材1Α之構成： 圖1係顯示與本發明之第1實施型態有關的多層片材丨八之 剖面圖。 多層片材1A具備：最外層u，其係具有聚烯烴層m、 阻隔層Π2、及水分吸收接著劑層U3者；基材層12，其係 由第1聚烯烴層121、阻隔層122、及第2聚烯烴層123所構 成者；及剝離層1 3。 (丁-1)最外層11之構成： 132349.doc 10· 200920596 最外層⑽使用層壓用薄膜而構成之層m備㈣ 烴層111、阻隔層112、及水分吸收接著劑層113之3層構 成。 聚丙烯、聚乙 可使用於聚烯烴層1 11之樹脂，可舉出 烯等。 阻隔層112係具有氣體阻隔性之層，作為原料，譬如， 可舉出：乙烯.乙烯醇共聚合體（EV〇H)、間茬二胺(°mxd) 尼龍等。作為阻隔層112而使用EV0H之情形，係以對多層 片材1A之總厚度，以4%以上20%以下之厚度形成為佳。更 理想狀態係，對多層片材1A之總厚度為8%以上15%以下之 厚度。此一情形，如阻隔層112之厚度為對總厚度小於 4%，則因阻隔性能不足，而成為無法長期保存。又，如 阻隔層112之厚度為對總厚度大於2〇%，則容器成形時成為 延伸不良，因此並不理想。It is preferable that the Aa material is provided with a moisture absorbing adhesive layer on the side of the outermost layer which is in contact with the soil material. Eight: In the present invention, "the water-adhesive layer is provided on the side of the outermost layer which is in contact with the substrate layer". Therefore, in the squeezing and sterilizing heat treatment, the moisture absorbing adhesive layer is used to absorb the moisture from the outside. A barrier layer that reaches the substrate layer can be prevented. Based on this reason, it is possible to prevent the reduction of β κ and wet oxygen by the barrier property. This is better known as the oxygen barrier property of the multilayer sheet. In the multilayer sheet of the present invention, it is preferred that the enthalpy η is provided with a moisture absorbing adhesive layer between the polyolefin layer and the barrier layer. In the invention, the barrier layer is formed by being cooled by a moisture absorbing adhesive layer. If it is configured as such, it absorbs the moisture intruded from the outside by the moisture absorbing adhesive layer. This prevents moisture from reaching the barrier layer. That is, the oxygen barrier property of the barrier layer can be further improved. In the multilayer sheet of the present invention, the barrier layer is preferably formed of meta-diamine (MXD) nylon or ethylene. vinyl alcohol copolymer (ev〇h). According to the present invention, since MXD nylon or EV〇H is used as the barrier layer, a multilayer sheet excellent in oxygen barrier properties can be provided. - In the multilayer sheet of the present invention, it is preferred that a release layer is laminated on the other side of the base material layer. The adhesion strength between the release layer and the substrate layer is set to be smaller than the heat resistance of the container and the lid member, and the container is formed by molding the multilayer sheet. II, in this way, when the cover material is unsealed, interlayer peeling can be performed between the release layer and the substrate layer. Therefore, the peeling surface can be made beautiful at the same time as the easy-opening property is excellent. Further, since the heat-sealed portion of the container and the lid member can be firmly adhered, the sealing property is also excellent. t In the multilayer sheet of the present invention, it is preferred to add talc to the substrate layer. The π-stone system functions to block the intrusion of oxygen molecules or hydrogen molecules into the crop rationally. Therefore, by adding talc to the base material layer, oxygen barrier properties can be enhanced and moisture can be prevented from intruding into the substrate layer. Further, the rigidity of the multilayer sheet can be improved, and a container which is not inferior to the metal can can be formed. In the multilayer sheet of the present invention, the aforementioned outermost layer is preferably a film for lamination. 0 132349.doc 200920596 Since the outermost layer can be omitted as a laminate. Manufactured separately from the crucible, it is possible to manufacture the feature A of the container of the present invention, Gan #H + h& according to the flange which is used with the cover material; and the above-mentioned multilayer sheet of the present invention Formed. According to the present invention, since the above-mentioned multilayer sheet is used, a container which exerts the same effect can be provided. The package of the present invention is characterized in that the container of the present invention and the lid member of the opening portion of the valley state are provided; and the lid member is attached to the flange portion of the container. According to the present invention, since the above-mentioned multilayer sheet and container are used, a package body which exhibits the same effect can be provided. [Embodiment] Hereinafter, embodiments of the present invention will be described based on the drawings. First, a first embodiment of the present invention will be described with reference to Figs. 1, 2 and 3. [First Embodiment] (1) Configuration of multilayer sheet 1 : Fig. 1 is a cross-sectional view showing a multilayer sheet according to a first embodiment of the present invention. The multilayer sheet 1A includes an outermost layer u having a polyolefin layer m, a barrier layer 2, and a moisture absorbing adhesive layer U3, and a base layer 12 composed of a first polyolefin layer 121 and a barrier layer 122. And the second polyolefin layer 123; and the release layer 13; (D-1) The composition of the outermost layer 11: 132349.doc 10· 200920596 The outermost layer (10) is composed of a film for lamination, and the fourth layer of the hydrocarbon layer 111, the barrier layer 112, and the moisture absorbing adhesive layer 113 Composition. Polypropylene or Polyethylene The resin used for the polyolefin layer 11 can be exemplified by an olefin or the like. The barrier layer 112 is a gas barrier layer, and examples of the material include, for example, an ethylene-vinyl alcohol copolymer (EV〇H) and an m-diamine (°mxd) nylon. In the case where EV0H is used as the barrier layer 112, it is preferable to form the thickness of the multilayer sheet 1A by 4% or more and 20% or less. More preferably, the total thickness of the multilayer sheet 1A is 8% or more and 15% or less. In this case, if the thickness of the barrier layer 112 is less than 4% of the total thickness, the barrier property is insufficient and it is impossible to store for a long period of time. Further, if the thickness of the barrier layer 112 is greater than 2% by weight based on the total thickness, the container becomes poor in elongation during molding, which is not preferable.
又，作為阻隔層112而使用MXD尼龍之情形，係以對多 層片材1A之層厚度’以4%以上1〇%以下之厚度形成為佳。 更理想狀悲係，對多層片材1A之厚度為5%以上9%以下之 厚度《此一情形，如阻隔層112之厚度為對總厚度小於 4%，則因阻隔性能不足，而成為無法長期保存。又如 阻隔層112之厚度為對總厚度大於1〇%，則容器成形時成為 延伸不良，因此並不理想。 在本實施型態方面，係將MXD尼龍使用於最外層u之阻 隔層112。 水分吸收接著劑層113係形成與基材層12接觸之面，在 132349.doc • 11 - 200920596 吸收水分的同時，並具有作為接著劑而發揮功能之層，譬 如可使用二井化學公司製「水蒸氣阻隔膜ADMERR」 等°水分吸收接著劑層113係以厚度5 μπι以上3〇〇 μπι以下 為佳’更理想狀態為’ 1 〇 pm以上1 2 0 μηι以下。 如此之3層構造的最外層11係進行層壓加工。具體而 S ’可使用乾式層壓、熱層壓、押出層壓等公知的方法。 (1-2)基材層12之構成： 基材層12係成為具備第1聚烯烴層121、阻隔層122、及 第2聚烯烴層123之3層構成。 就構成第1聚烯烴層121及第2聚烯烴層123之樹脂而言， 譬如，可舉出：HDPE(高密度聚乙烯）、L-LDPE(低密度聚 乙烯）、LDPE(低密度聚乙烯）、HPP(單聚丙烯）、Bpp(嵌段 聚丙烯）、RPP(無規聚丙烯）、PET(聚對笨二甲酸乙二醇 S旨）、PBT(聚對苯二曱酸丁二酯）、順丁烯二酸變性pp、苯 乙烯-異戊二浠共聚合體、變性聚酯系熱可塑性彈性體、 EVA(乙烯-乙酸乙稀共聚合體）、乙稀_丙稀共聚合體等、 及此等之混合體。使用於第1聚烯烴層121與第2聚烯烴層 123之樹脂，如為同種之樹脂亦可、如為異種之樹脂亦 可。 此外，在使用於第1聚烯烴層1 21或第2聚烯烴層1 23之樹 脂，如添加滑石亦可。滑石係指，含水矽酸鎂之母料原 料，具體而言’可使用信和塑膠股份有限公司製「s_ U3」、CALP工業股份有限公司製「MP465-2」等。 阻隔層122係與如述阻隔層π 2同樣，具有氣體阻隔性之 132349.doc -12- 200920596 層’作為原料，譬如，可舉出EVOH、MXD尼龍等，阻隔 層122之厚度亦與前述阻隔層112同樣。此外，在本實施型 態方面’作為基材層12之阻隔層m係使用Ev〇h。 如將阻隔層122、第1聚烯烴層ι21及第2聚烯烴層123之 原料设為同系統之樹脂，由於阻隔層122與第1聚烯烴層 121、及阻隔層122與第2聚烯烴層^之接著強度優良，因 此很理想。 (1-3)剝離層13之構成： 剝離層13係對基材層12疊層為可剝離。或是，剝離層13 本身為可凝聚破壞者亦可。無論為何種情形，在將其他薄 臈牛固接著於剝離層丨3後，進行剝離試驗之情形，係以剝 離強度為25 N/15 mm以下（JIS κ 6854)為佳。如為如此低 之剝離強度，則作為用於將後述包裝體用容器成形的多層 片材1Α’可適合使用。 就構成如此之剝離層13的樹脂而言，譬如，可舉出： HDPE、L-LDPE、LDPE、ΗΡΡ、ΒΡΡ、RPP、ΡΕΤ、ΡΒΤ ' 乙烯順丁烯二酐甲基丙烯酸酯共聚物、及此共聚物與聚烯 烴之混合物等。又，作為剝離機構’在利用剝離層構成樹 脂之凝聚破壞的情形時，係以使用彈性率2〇〇 Mpa以下、 尤其150 MPa以下之軟質樹脂或彈性體為佳。就軟質樹脂 而《，·!如，可舉出乙稀_極性乙烯化合物系共聚合體。 又，就彈性體而言，可例示烯烴系彈性體、苯乙烯系彈性 體、此等之水添物等。在本實施型態中，係使用HDpE ^ 就剝離層13之厚度而言，在將後述環狀之切痕設於凸緣 132349.doc 13 200920596 部之外表面的情形時，係以30〜12G㈣為適合，不設切痕 之情形，則以5〜4〇 μιη為適合。 没有切痕之情形，如使剝離層13之厚度未達3〇 ，則 將刀痕之深度留於剝離層i 3内的加工，係變得困難。如剝 離層13之厚度超過12〇 μηι，則在容器形成後之厚度，尤其 凸緣部之厚度成為過厚，難以作為薄形容器進行應用。 又，未設切痕之情形，如使剝離層13之厚度未達5 ，則 在以蓋材將容器密封後，則有耐内壓性惡化之虞。如剝離 们3之厚度超過3G μηι，則有損未設切痕之情形的優點之 -(在達成容器之薄肉化的同時並具有易開封性)之虞。 在作為剝離機構，而利用基材層12與剝離層13之剝離的 清形時，藉由將各自之構成樹脂的種類作適宜選擇，則可 控制基材層12與剝離層13之接著強度（剝離強度）。譬如， 後述之蓋材的密封膠為聚丙豨的情形，係以將剝離層13之 原料設為無規聚丙稀，將基材層12之原料設為聚丙稀與聚 乙烯之混合物(使聚乙烯之比率較多)為佳。又，如蓋材的 密封膠為直鏈狀低密度聚乙稀（LLDpE)般的聚乙婦之情 形二係以將剝離層13之原料設為聚乙稀，將基材層12之原 料叹為聚丙烯與$乙婦之混合物（使聚丙稀之比率較多）為 佳。欲使剝離層13及基材層12之内部產生凝聚破壞之情 形二作為欲產生凝聚破壞之層的原料，係以使用已適宜混 合前述彈性體的組成物為佳。 (工_4)多層片材1A之製造方法： 首先，將上述藉由共押出成形法所製造之薄膜狀的最外 132349.doc 200920596 層〗〗，縱切為特定之嘗疮 ^, 义，並先捲繞為捲筒狀。接著，藉 由如下方式製後者精 定之順庠p p a " a片材1A •從押出機將依特 興序已作$層的基材層12及剝離層 嘘進行疊層於從摇ηMk h 此M 薄膜狀的最外層H。又，除 此之外，亦可以共押出、埶 矛、 扣…層壓、乾式層壓等進行，再 者以此荨之階段性組合來進行亦可。 接:’在以接觸捲筒或氣動到刀方式使其冷卻固化的同 夺，並進行增減取用逮度而調整片材厚度。其後，在取用 =在捲筒固化的片材的同時，進行縱切（寬度縮減），並使 …通過連續厚度計、異物檢測器後，以大型捲繞機將片材 捲繞為捲筒狀。最後’將已成為規定之長度的多層片材之 捲筒，以！呂薄膜（防濕）及牛皮紙（防止異物附著）進行捆 包’使其成為最終製品。 (II)包裝體2之構成： 使用圖2及圖3’針對包裝體2作說明。圖2係與本發明之 第1實施型態有關的包裝體之立體圖，圖3係與本發明之第 1實施型態有關的包裝體之要部剖面圖。 圖2所示包裝體2係具備如下者而構成：容器3，其係使 用前述多層片材1Α而作熱成形者；及蓋材4,其係覆蓋容 器3之開口者。 (Π-1)容器3之構成： 容器3係具備被包裝物取納用之凹部3丨、及形成於此凹 部3 1之開口周緣的凸緣部3 2。凹部3 1係有底之圓筒狀；凸 緣部3 2係從凹部3 1之開口在水平方向往外側延伸之扁平凸 132349.doc •15- 200920596 緣。在凸緣部32，於容器3本體之開口部附近，係設有環 狀之切痕部33。此切痕部33係貫穿剝離層13而達基材層 12 ° (II-2)蓋材4之構成： 蓋材4具有比容器3之凸緣部32之外徑更大的外徑。此蓋 材4係由如下多層構造所構成，將凸緣部32之外表面（剝離 層13之表面）且位於比環狀之切痕部33更外周之部分牢固 進灯熱密封’而該多層構造係：作為表基材，具有氧阻隔 1·生之透明蒸鍍PET薄膜41及二軸延伸尼龍薄膜（〇Ny薄 膜）42 ’作為密封膠具有L_LDpE薄膜43。此外，此熱密封 之接著強度係以比剝離層丨3與基材層丨2之接著強度更大為 佳。 ’、’、 如將以此方式般安裝於容器3之蓋材4的端部以手拉起， 由於凸緣部32之剝離層13與蓋材4呈牢固接著，因此，在 相較接著強度小之剝離層13與基材層12之界面開始剝離， 當到達切痕部33，則蓋材4係從容器3分離。此外，如構成 為在剝離層13内產生凝聚破壞亦可。 在此在構成包裝體2之際，在蓋材4方面，亦以具備與 多層片材1A同程度之氧阻隔性為佳。譬如，除使用如透明 洛鍍PET薄膜般之具有氧阻隔性二氧化⑪皮膜的表基材之 外，採取將EVOH層或鋁箔設為中間層之構成亦可。 (π_3)包裝體2之製造方法： 針對本實施型態的包裝體2之製造方法作說明。 首先，就容器3之成形方法而言，可考慮塞柱輔助成 I32349.doc 16 200920596 形其係將多層片材1A以塞柱在已形成為容器外形狀之腔 室内進行預備伸張，其後，進行壓空成形或真空成形等 者。 _具體而f ’將以前述方法所製造之多層片材^送進未圖 不之凹狀模、凸緣固定具、及塞柱之間，纟此狀態下，藉 使凸緣固疋具及塞柱往模側移動，而製造容器3，而其 係已形成收納内容物p之凹部31及凸緣部32者。 其後，將切痕刀（未圖示）抵住容器3之凸緣部32，而將 切痕部33形成環狀。 接著’將蓋材4置於已收納内容物p之容器3的凸緣部 32將切痕部33之外周側進行熱密封。在凸緣部32與蓋材 ^係形成％狀之密封部（未圖示）。熱密封係由未圖示 之密封棒從蓋材4之上抵住凸緣部32而進行。 (III)第1實施型態之效果 因此，根據本實施型態，可發揮以下之效果。 _⑴在多層>{材1A之最外層u設有由Εν〇Η所構成之阻 &層U2，在基材層12設有由mxd尼龍所構成之阻隔層 在夕層片材1A之由於設有阻隔層112與阻隔層⑵之2層 的阻隔層’因此氧阻隔性優良。因此，可提供氧阻隔性優 良之容器3及包裝體2。亦即， 1 了以長期保存食品等内容 物。 (2)又’在本實施型態中， 側設有水分吸收接著劑層U3 由於在最外層U之基材層12 ，再者，在水分吸收接著劑 132349.doc 17 200920596 層U3之外側設有阻隔層丨12，因此，可使氧阻隔性更提 昇。 ’而在將由此多層 ，可將到達阻隔層 ’使其成為时水性 又’藉由設有水分吸收接著劑層〗j 3 片材所構成之容器作殺菌處理之情形時 之水分予以吸收、封鎖，抑制殺菌衝擊 優良的容器。 (3) 再者，在本實施型態中，由於使基材層12之第匕聚 烯炫層121及第2聚烯烴層123含有滑石，因此可提供剛性 優良之容器。 (4) 此外，在本實施型態中，在多層片材1A設有剝離層 U，使剝離層13與基材層12之接著強度比剝離層13與蓋材 4的接著強度為小，因此，在將包裝體2開封之時，在剝離 層13與基材層12之間進行層間剝離。 因此，由於剝離層13與蓋材4之間係呈牢固熱密封，故 密封性優良。 (5) 又，由於在容器3之凸緣部32係形成環狀之切痕部 33，因此，在將熱密封於此容器3之蓋材4開封時，當剝離 層13之剝離到達切痕部33，則蓋材4與容器3係可簡單分 離。亦即，易開封性優良。 [第2實施型態] 接著，根據圖4，針對本發明之第2實施型態作說明。 此外，在本實施型態中，除多層片材之層構成不同以 外，係與前述第1實施型態為相同構成，因此省略說明。 (I)多層片材1B之構成： 132349.doc -18 · 200920596 圖4係顯示與本發明之第2實施型態有關的多層片材a之 剖面圖。 多層片材1B具備：最外層U，其係具有聚烯烴層 阻隔層112及水分吸收接著劑層n3者；基材層12;及剥離 層1 3。 最外層11及剝離層13由於與前述第丨實施型態為相同構 成，因此省略說明。 基材層1 2係以單層構成，以聚烯烴等樹脂形成。可使用 與在前述第1實施型態之第1聚烯烴層121及第2聚烯烴層 1 23所使用者同樣之樹脂。 (II)第2實施型態之效果： 因此’根據本實施型態，可發揮與前述第1實施型態同 樣之效果。 [第3實施型態] 接著’根據圖5 ’針對本發明之第3實施型態作說明。 此外’在本實施型態中，除多層片材之層構成及製造方 法不同以外’係與前述第1實施型態為相同構成，因此省 略說明。 (I)多層片材ic之構成： 圖5係顯示與本發明之第3實施型態有關的多層片材1C之 剖面圖。 多層片材1C具備：最外層14，其係具有聚烯烴層141、 第1水分吸收接著劑層142、阻隔層143及第2水分吸收接著 劑層144者；基材層12 ;及剝離層13。 132349.doc •19- 200920596 基材層12及剝離層13由於與前述第i實施型態為相同構 成，因此省略說明。此外，可將基材層12作適宜設計，譬 如設為與前述第2實施型態為同樣之構成等。 最外層14係除了在阻隔層143與聚烯烴層141之間設有第 1水分吸收接著劑層142之外，料述第4施型態之最外 層11為相同。 在第1水分吸收接著劑層！ 4 2與第2水分吸收接著劑層 144,係可使用：使用於與前述第！實施型態之水分吸收接 著劑層113者為同樣者。 (II)多層片材1C之製造方法： 在本實施型態中，並不將最外層M作為層壓用薄膜使 用而與基材層12及剝離層13同樣，藉由使用押出機之押 出成形而製造。除此之外，亦可以熱層壓、乾式層壓等進 行’再者’以此等之階段性組合來進行亦可。 押出後之處理係以與前述第]實施型態同樣方式實施， 成為最終製品。 (HI)第3實施型態之效果： 因此’根據本實施型態’可發揮與前述第1實施型態同 樣之效果，且由於在阻隔層丨43之兩面，設有水分吸收接 著劑層（第1水分吸收接著劑層142、第2水分吸收接著劑層 144) ’因此，可確實防止往阻隔層143之來自外部之水分 的侵入’可使藉由阻隔層143之氧阻隔性更加提昇。 [變形例] 此外’以上所說明之樣態係顯示本發明之一樣態者，本 132349.doc -20- 200920596 發明並不受限於前述實施型態，在可達成本發明之目的及 效果之範圍内的變形或改良’亦包含於本發明之内容，此 點毋庸資s。又’在實施本發明之際的具體構造及形狀 等，在可達成本發明之目的及效果之範圍内，設為其他構 造或形狀等亦可。 譬如，在則述第1實施型態中，雖在最外層丨丨之基材層 12側設有水分吸收接著劑層113，但如設為未設有水分吸 收接著劑層11 3之構成亦可。此一情形，係在最外層丨丨之 基材層12側設聚烯烴層為佳。 又，在前述第1實施型態中，雖在最外層丨〗之阻隔層112 使用MXD尼龍，在基材層12之阻隔層122使用EV〇H，但 如在最外層11之阻隔層112使用EV〇H，在基材層12之阻隔 層122使用MXD尼龍亦可。又，如在兩方之阻隔層使用 EVOH亦可’在兩方之阻隔層使用MXD尼龍亦可。 再者，在前述第1實施型態中，雖將最外層丨丨設為3層構 成，但如為由阻隔層與聚烯烴層所構成之2層構成亦可。 此外，在前述實施型態中，雖使形成聚烯烴層之樹脂含 有滑石，但如設為未含有滑石之構成亦可，而該聚烯烴層 係構成基材層12者。 又’如在阻隔層122之正反面設水分吸收接著劑層亦 可。藉由此方式，則可實現進一步之氧阻隔性的提昇。 再者’在前述實施型態中，如在各層之間，設接著劑層 亦可。藉由此方式，則可更提昇各層間之接著強度。 此外，在前述實施型態中，雖在容器3設有1處切痕部 132349.doc -21 · 200920596 33，但如在切痕部33之 #戸收★够， 卜周側的與切痕部33分離的位置， 5又壤狀之第2切痕部亦可 ^ . +71 ^ Β 。此一情形，藉由將切痕部33與 第2切痕部之間進行埶 、在封’而更提昇包裝體2之易開封 性0 又，將前述實施型態之多 之方式予以成形亦可。如根 蓋材被熱密封’在開封之際 [實施例] 層片材以最外層成為容器内面 據此，最外層之聚烯烴層係與 ’此聚烯烴層進行凝聚剝離。 接著舉出實施例與比較例，將本發明作更詳細說_， 但本發明絲毫不受限於此等實施例等之記載内容。 [實施例1〜15、比較例i〜5] 以後述表1所示層構成及材料’分別製作實施例丨〜15及Further, in the case where MXD nylon is used as the barrier layer 112, it is preferable to form the thickness of the layer thickness of the multi-layer sheet 1A to 4% or more and 1% or less. More desirably, the thickness of the multilayer sheet 1A is 5% or more and 9% or less. In this case, if the thickness of the barrier layer 112 is less than 4% of the total thickness, the barrier property is insufficient and becomes impossible. Long-term preservation. Further, if the thickness of the barrier layer 112 is greater than 1% by weight of the total thickness, the container becomes poor in elongation during molding, which is not preferable. In this embodiment, MXD nylon is used for the barrier layer 112 of the outermost layer u. The water absorbing adhesive layer 113 forms a layer which is in contact with the base material layer 12, and absorbs moisture at 132349.doc • 11 - 200920596, and has a layer functioning as an adhesive. For example, water can be used by Mitsui Chemicals Co., Ltd. The vapor-barrier film ADMERR" or the like moisture-absorbing adhesive layer 113 is preferably 5 μπι or more and 3 μm μm or less, and more preferably '1 〇 pm or more and 1 2 0 μηι or less. The outermost layer 11 of such a three-layer structure is subjected to lamination processing. Specifically, a known method such as dry lamination, thermal lamination, or extrusion lamination can be used. (1-2) Configuration of Base Material Layer 12: The base material layer 12 has a three-layer structure including the first polyolefin layer 121, the barrier layer 122, and the second polyolefin layer 123. Examples of the resin constituting the first polyolefin layer 121 and the second polyolefin layer 123 include HDPE (high density polyethylene), L-LDPE (low density polyethylene), and LDPE (low density polyethylene). ), HPP (single polypropylene), Bpp (block polypropylene), RPP (random polypropylene), PET (poly(p-polyethylene glycol), PBT (polybutylene terephthalate) ), maleic acid modified pp, styrene-isoprene dimer copolymer, denatured polyester thermoplastic elastomer, EVA (ethylene-ethylene acetate copolymer), ethylene-propylene copolymer, and the like, and A mixture of these. The resin used in the first polyolefin layer 121 and the second polyolefin layer 123 may be a resin of the same kind or a resin of a different type. Further, the resin used in the first polyolefin layer 121 or the second polyolefin layer 213 may be added with talc. The talc is a masterbatch of a water-containing magnesium silicate, and specifically, "s_U3" manufactured by Shinwa Plastic Co., Ltd., "MP465-2" manufactured by CALP Industrial Co., Ltd., etc. can be used. The barrier layer 122 is the same as the barrier layer π 2 and has a gas barrier property of 132349.doc -12- 200920596 layer as a raw material, for example, EVOH, MXD nylon, etc., and the thickness of the barrier layer 122 is also blocked from the foregoing. Layer 112 is the same. Further, in the present embodiment, Ev〇h is used as the barrier layer m of the base material layer 12. When the materials of the barrier layer 122, the first polyolefin layer ι21, and the second polyolefin layer 123 are made of the same system resin, the barrier layer 122 and the first polyolefin layer 121, and the barrier layer 122 and the second polyolefin layer are used. ^The subsequent strength is excellent, so it is ideal. (1-3) Configuration of Release Layer 13: The release layer 13 is laminated to the base material layer 12 so as to be peelable. Alternatively, the peeling layer 13 itself may be a cohesive breaker. In any case, after the other thin yak is adhered to the peeling layer 丨3, the peeling test is carried out, and the peeling strength is preferably 25 N/15 mm or less (JIS κ 6854). In the case of such a low peeling strength, the multilayer sheet 1Α' for molding a container for a package to be described later can be suitably used. Examples of the resin constituting the release layer 13 include: HDPE, L-LDPE, LDPE, ruthenium, osmium, RPP, ruthenium, osmium ethylene methacrylate copolymer, and A mixture of the copolymer and a polyolefin, and the like. Further, in the case where the peeling means "cracks the resin by the peeling layer, it is preferable to use a soft resin or an elastomer having an elastic modulus of 2 〇〇 Mpa or less, particularly 150 MPa or less. The soft resin is, for example, a vinyl-polar ethylene compound-based copolymer. Further, the elastomer may, for example, be an olefin-based elastomer, a styrene-based elastomer, or the like. In the present embodiment, HDpE ^ is used in the case of the thickness of the peeling layer 13, and in the case where the ring-shaped slit described later is provided on the outer surface of the flange 132349.doc 13 200920596, it is 30 to 12G (four). In order to be suitable, if there is no cut, it is suitable for 5 to 4 〇 μιη. In the case where there is no cut, if the thickness of the peeling layer 13 is less than 3 Å, it is difficult to leave the depth of the cut mark in the peeling layer i 3 . If the thickness of the peeling layer 13 exceeds 12 〇 μηι, the thickness after the formation of the container, in particular, the thickness of the flange portion becomes too thick, and it is difficult to apply it as a thin container. Further, in the case where the cut is not provided, if the thickness of the peeling layer 13 is less than 5, the internal pressure resistance is deteriorated after the container is sealed with the lid member. If the thickness of the peeling member 3 exceeds 3 G μηι, the advantage of the case where no cut is not provided is degraded (when the thinness of the container is achieved and the easy-opening property is obtained). When the peeling of the base material layer 12 and the peeling layer 13 is performed as the peeling mechanism, the bonding strength of the base material layer 12 and the peeling layer 13 can be controlled by appropriately selecting the type of the respective constituent resin ( Peel strength). For example, in the case where the sealant of the cover material described later is polypropylene, the raw material of the release layer 13 is made of random polypropylene, and the raw material of the base material layer 12 is made of a mixture of polypropylene and polyethylene (for polyethylene). The ratio is more). Moreover, if the sealant of the cover material is a linear low-density polyethylene (LLDpE)-like polyether, the raw material of the peeling layer 13 is made of polyethylene, and the raw material of the base material layer 12 is sighed. It is better to use a mixture of polypropylene and a woman (the ratio of polypropylene is more). In order to cause agglomeration damage to the inside of the peeling layer 13 and the base material layer 12, it is preferable to use a composition which is suitable for mixing the above-mentioned elastomer as a raw material for the layer to be agglomerated. (Working_4) Manufacturing method of the multilayer sheet 1A: First, the film-like outermost 132349.doc 200920596 layer produced by the co-extrusion molding method described above is cut into a specific taste sore, meaning, And first wound into a roll shape. Next, the latter is spliced by the following method: pPa " a sheet 1A • The substrate layer 12 and the peeling layer which have been layered as a layer are laminated on the ηMk h from the extruder M The outermost layer H of the film. Further, in addition to this, it is also possible to carry out co-extrusion, spear, buckle, lamination, dry lamination, etc., and it is also possible to carry out this stepwise combination. Connect: 'In the same way, use the contact reel or pneumatic to knife to cool and solidify, and increase or decrease the catch to adjust the thickness of the sheet. Thereafter, while taking the sheet which is solidified by the reel, slitting (width reduction) is performed, and after passing through the continuous thickness gauge and the foreign matter detector, the sheet is wound into a roll by a large winder. Cylindrical. Finally, the reel of the multi-layer sheet that has become the prescribed length! Lv film (moisture proof) and kraft paper (to prevent foreign matter from sticking) are bundled to make it the final product. (II) Configuration of Package 2: The package 2 will be described with reference to Figs. 2 and 3'. Fig. 2 is a perspective view of a package body according to a first embodiment of the present invention, and Fig. 3 is a cross-sectional view of a main part of the package body according to the first embodiment of the present invention. The package 2 shown in Fig. 2 is composed of a container 3 which is formed by thermoforming using the multilayer sheet 1A, and a cover member 4 which covers the opening of the container 3. (Π-1) Configuration of the container 3: The container 3 is provided with a recessed portion 3丨 for receiving the packaged object, and a flange portion 3 2 formed on the peripheral edge of the opening of the recessed portion 31. The concave portion 3 1 has a cylindrical shape with a bottom; the convex portion 3 2 is a flat convex portion extending from the opening of the concave portion 31 to the outside in the horizontal direction 132349.doc • 15 - 200920596. In the flange portion 32, a ring-shaped cutout portion 33 is provided in the vicinity of the opening of the main body of the container 3. The incision portion 33 penetrates the peeling layer 13 to reach the base material layer 12 (II-2) of the lid member 4: The lid member 4 has an outer diameter larger than the outer diameter of the flange portion 32 of the container 3. The cover member 4 is composed of a multilayer structure in which the outer surface of the flange portion 32 (the surface of the peeling layer 13) and the outer peripheral portion of the annular notch portion 33 are firmly sealed into the lamp heat seal 'the multilayer Structure: As the surface substrate, the transparent vapor-deposited PET film 41 and the biaxially stretched nylon film (〇Ny film) 42' having an oxygen barrier 1·s have a L_LDpE film 43 as a sealant. Further, the adhesive strength of the heat seal is preferably greater than the strength of the peeling layer 3 and the substrate layer 丨2. ', ', as in this way, the end portion of the lid member 4 of the container 3 is pulled up by hand, since the peeling layer 13 of the flange portion 32 and the lid member 4 are firmly adhered to each other, The interface between the small peeling layer 13 and the base material layer 12 starts to peel off, and when reaching the cut portion 33, the lid member 4 is separated from the container 3. Further, it may be configured such that cohesive failure occurs in the peeling layer 13. Here, in the case of constituting the package 2, it is preferable that the cover member 4 has oxygen barrier properties similar to those of the multilayer sheet 1A. For example, a EVOH layer or an aluminum foil may be used as an intermediate layer in addition to a surface substrate having an oxygen barrier 11, which is a transparent film of a PET film. (π_3) Manufacturing Method of Package 2: A method of manufacturing the package 2 of the present embodiment will be described. First, in terms of the forming method of the container 3, it can be considered that the plug column is assisted to form the multilayer sheet 1A by the plug column in the chamber which has been formed into the outer shape of the container, and thereafter, Perform vacuum forming or vacuum forming. _specifically, f', the multi-layer sheet manufactured by the above method is fed between a concave mold, a flange fixture, and a plug, which are not shown, in this state, by the flange fixing fixture and The plug is moved to the mold side to manufacture the container 3, and the recess 31 and the flange portion 32 for accommodating the contents p are formed. Thereafter, a notch knife (not shown) is placed against the flange portion 32 of the container 3, and the notch portion 33 is formed into a ring shape. Then, the lid member 4 is placed on the flange portion 32 of the container 3 in which the contents p are stored, and the outer peripheral side of the incision portion 33 is heat-sealed. A seal portion (not shown) having a % shape is formed in the flange portion 32 and the lid member. The heat seal is performed by a sealing rod (not shown) from the lid member 4 against the flange portion 32. (III) Effect of the first embodiment Therefore, according to the present embodiment, the following effects can be exhibited. _(1) In the multilayered layer {the outermost layer u of the material 1A is provided with a barrier layer & U2 composed of Εν〇Η, and the base layer 12 is provided with a barrier layer composed of mxd nylon in the layer 1A. The barrier layer of the two layers of the barrier layer 112 and the barrier layer (2) is provided, so that the oxygen barrier property is excellent. Therefore, the container 3 and the package 2 excellent in oxygen barrier properties can be provided. That is, 1 to preserve food and other contents for a long time. (2) In the present embodiment, the side is provided with a moisture absorbing adhesive layer U3. The base layer 12 at the outermost layer U is further provided on the outer side of the moisture absorbing adhesive 132349.doc 17 200920596 layer U3. There is a barrier layer 丨12, so that oxygen barrier properties can be improved. 'When the layer is thus multi-layered, it can absorb and block the moisture when it reaches the barrier layer and makes it water-soluble and sterilized by the container provided with the moisture absorbing adhesive layer j 3 sheet. A container that inhibits bactericidal impact. (3) In the present embodiment, since the second polymer layer 121 and the second polyolefin layer 123 of the base material layer 12 contain talc, it is possible to provide a container excellent in rigidity. (4) Further, in the present embodiment, the peeling layer U is provided on the multilayer sheet 1A, and the adhesion strength between the peeling layer 13 and the base material layer 12 is made smaller than the adhesion strength between the peeling layer 13 and the lid member 4, so When the package 2 is unsealed, interlayer peeling is performed between the peeling layer 13 and the base material layer 12. Therefore, since the peeling layer 13 and the lid member 4 are strongly heat-sealed, the sealing property is excellent. (5) Further, since the annular cut portion 33 is formed in the flange portion 32 of the container 3, when the cover member 4 thermally sealed to the container 3 is opened, the peeling of the peeling layer 13 reaches the cut mark. In the portion 33, the lid member 4 and the container 3 can be easily separated. That is, the easy opening property is excellent. [Second Embodiment] Next, a second embodiment of the present invention will be described with reference to Fig. 4 . In the present embodiment, the layer configuration of the multilayer sheet is the same as that of the first embodiment described above, and thus the description thereof is omitted. (I) Composition of the multilayer sheet 1B: 132349.doc -18 - 200920596 Fig. 4 is a cross-sectional view showing the multilayer sheet a according to the second embodiment of the present invention. The multilayer sheet 1B includes an outermost layer U having a polyolefin layer barrier layer 112 and a moisture absorbing adhesive layer n3, a base material layer 12, and a release layer 13 . Since the outermost layer 11 and the peeling layer 13 are configured in the same manner as the above-described third embodiment, the description thereof will be omitted. The base material layer 12 is composed of a single layer and is formed of a resin such as polyolefin. The same resin as that of the first polyolefin layer 121 and the second polyolefin layer 213 of the first embodiment described above can be used. (II) Effects of the second embodiment: Therefore, according to the present embodiment, the same effects as those of the first embodiment described above can be exerted. [Third embodiment] Next, a third embodiment of the present invention will be described with reference to Fig. 5 . Further, in the present embodiment, the layer configuration and the manufacturing method of the multilayer sheet are different from each other in the first embodiment, and therefore the description thereof will be omitted. (I) Configuration of multilayer sheet ic: Fig. 5 is a cross-sectional view showing a multilayer sheet 1C according to a third embodiment of the present invention. The multilayer sheet 1C includes an outermost layer 14 having a polyolefin layer 141, a first moisture absorbing adhesive layer 142, a barrier layer 143, and a second moisture absorbing adhesive layer 144; a base material layer 12; and a peeling layer 13 . 132349.doc • 19-200920596 Since the base material layer 12 and the peeling layer 13 are configured in the same manner as the above-described first embodiment, the description thereof is omitted. Further, the base material layer 12 can be suitably designed, for example, in the same configuration as the second embodiment described above. The outermost layer 14 is the same as the outermost layer 11 of the fourth embodiment except that the first moisture absorbing adhesive layer 142 is provided between the barrier layer 143 and the polyolefin layer 141. In the first moisture absorption adhesive layer! 4 2 and the second moisture absorbing adhesive layer 144 can be used: used in the above! The same applies to the embodiment of the moisture absorbing adhesive layer 113. (II) Method for Producing Multilayer Sheet 1C: In the present embodiment, the outermost layer M is not used as a film for lamination, and similarly to the base material layer 12 and the peeling layer 13, the extrusion molding is performed by using an extruder. And manufacturing. Alternatively, it may be carried out by a combination of heat lamination, dry lamination, or the like. The treatment after the extrusion is carried out in the same manner as in the above-described embodiment, and becomes a final product. (HI) Effect of the third embodiment: Therefore, the same effect as the first embodiment described above can be exerted, and a moisture absorbing adhesive layer is provided on both surfaces of the barrier layer 43 ( The first moisture absorbing adhesive layer 142 and the second moisture absorbing adhesive layer 144 ′′ “thereby surely prevent the intrusion of moisture from the outside of the barrier layer 143 to improve the oxygen barrier property of the barrier layer 143. [Modifications] Further, the above-described aspects show the same state of the present invention, and the invention of the present invention is not limited to the foregoing embodiment, and it is possible to achieve the object and effect of the invention. Variations or improvements within the scope are also included in the content of the present invention, and this is not a problem. Further, the specific structure and shape of the present invention may be made into other configurations, shapes, and the like within the scope of the object and effect of the invention. For example, in the first embodiment, the moisture absorbing adhesive layer 113 is provided on the side of the base layer 12 of the outermost layer, but the composition is not provided with the moisture absorbing adhesive layer 11 3 . can. In this case, it is preferred to provide a polyolefin layer on the side of the base material layer 12 of the outermost layer. Further, in the first embodiment, MXD nylon is used for the barrier layer 112 of the outermost layer, and EV〇H is used for the barrier layer 122 of the substrate layer 12, but is used as the barrier layer 112 of the outermost layer 11. EV〇H may be MXD nylon used as the barrier layer 122 of the base material layer 12. Further, if EVOH is used in the barrier layers of both sides, MXD nylon may be used in the barrier layers of both sides. Further, in the first embodiment, the outermost layer is formed into a three-layer structure, but it may be composed of two layers of a barrier layer and a polyolefin layer. Further, in the above embodiment, the resin forming the polyolefin layer contains talc, but it may be a structure which does not contain talc, and the polyolefin layer constitutes the base material layer 12. Further, a moisture absorbing adhesive layer may be provided on the front and back surfaces of the barrier layer 122. In this way, further improvement in oxygen barrier properties can be achieved. Further, in the above embodiment, an adhesive layer may be provided between the respective layers. In this way, the adhesion strength between the layers can be further improved. Further, in the above embodiment, although the container 3 is provided with one incision portion 132349.doc -21 · 200920596 33, as in the incision portion 33, it is sufficient, and the circumference and the incision are The position where the part 33 is separated, and the second incision of the 5th shape can also be ^71^ Β . In this case, by eminating the incision portion 33 and the second incision portion and further improving the easy-opening property of the package 2 by sealing, the manner of forming the above-described embodiment is also formed. can. If the root cover material is heat-sealed at the time of opening [Example] The outermost layer of the layered sheet becomes the inner surface of the container. Accordingly, the outermost polyolefin layer is agglomerated and peeled off from the polyolefin layer. Hereinafter, the present invention will be described in more detail with reference to examples and comparative examples, but the present invention is not limited by the description of the examples and the like. [Examples 1 to 15 and Comparative Examples i to 5] Examples 丨 15 and 15 were respectively prepared as the layer constitution and material shown in Table 1 below.
比較例1〜5之多層只知·，#在,丨, , A a月材並製作由此多層片材所構成的容 器及包裝體。 (1)多層片材之製造In the multilayers of Comparative Examples 1 to 5, only the containers of the multilayer sheets and the packages were prepared. (1) Manufacture of multilayer sheets
在實施例1〜1 3及比較例丨〜5方面，係製作以下所示層構 成之多層片材。 (剝離層）/(基材層）（聚烯烴層A2/聚烯烴層A "接著劑層/ 阻隔層B/接著劑層/聚烯烴層C1/聚烯烴層C2)/(最外層X聚 烯烴層D/阻隔層E/聚烯烴層F) 在實施例14及15方面，係製作在上述層中由剝離層與基 材層所構成之多層片材。 首先，使用以下所示材料，將各層分別以專用之押出機 (三菱重工業股份有限公司製）進行熔融押出而成形。最外 132349.doc -22- 200920596 層係使用在Taisei Lamick股份有限公司使用以下之材料已 作實施乾式層壓加工者。 (基材層：聚烯烴層A、C) 將聚丙烯（PRIMEPOLYMER公司製「E105GM」、 「E100GV」「E154G」）、及聚乙烯（曰本聚乙烯公司製 「HE30」、DOW公司製「ENGAGE 8200」）混合，更使其 含有WHITE M/B(東京INK公司製「W190078」）。添加比 率係以質量比為 PP : PE : WHITE M/B = 80 : 16 : 4。 (\ V 在使其含有滑石之情形時，則混合「S-U3」（商品名， 信和塑膠公司製）或「MP465·2」（商品名，CALP工業社 製）等。此一情形之添加比率係以質量比為PP : PE : WHITE M/B :滑石=56 : 10 : 4 : 30。 (阻隔層B、E) 在以下所示之樹脂中可使用任何一種。 • EVOH(KURARAY公司製「SP-521B」），厚度：對總 , 厚度為12%。In the examples 1 to 13 and the comparative examples 5 to 5, a multilayer sheet composed of the layers shown below was produced. (peeling layer) / (base material layer) (polyolefin layer A2 / polyolefin layer A " adhesive layer / barrier layer B / adhesive layer / polyolefin layer C1/polyolefin layer C2) / (outermost layer X poly Olefin Layer D/Barrier Layer E/Polyolefin Layer F) In the case of Examples 14 and 15, a multilayer sheet composed of a release layer and a substrate layer in the above layer was produced. First, each layer was formed by melt-extruding each layer with a dedicated extruder (manufactured by Mitsubishi Heavy Industries Co., Ltd.) using the materials shown below. The outermost 132349.doc -22- 200920596 layer is used by Taisei Lamick Co., Ltd. to perform dry laminating processing using the following materials. (Base material layer: polyolefin layer A, C) Polypropylene ("E105GM", "E100GV", "E154G", manufactured by PRIMEPOLYMER Co., Ltd.), and polyethylene ("HE30" manufactured by Sakamoto Co., Ltd." and "ENGAGE" manufactured by DOW Co., Ltd. 8200") is mixed to include WHITE M/B ("W190078" manufactured by Tokyo Ink Corporation). The ratio of addition is in the mass ratio of PP : PE : WHITE M/B = 80 : 16 : 4. (\ V When mixing talc, mix "S-U3" (product name, Shinwa Plastics Co., Ltd.) or "MP465·2" (product name, manufactured by CALP Industrial Co., Ltd.). The ratio is based on the mass ratio of PP: PE : WHITE M/B : talc = 56 : 10 : 4 : 30. (Barrier layer B, E) Any of the resins shown below can be used. • EVOH (KURARAY company) "SP-521B"), thickness: total, thickness 12%.
I .MXD尼龍（三菱氣體化學公司製「S7007」），厚度： 對總厚度為6%。 (最外層：聚烯烴層D、F) 可使用前述聚烯烴層A、B所使用之同樣的樹脂。 此外，如將聚烯烴層D設為水分吸收接著劑層之情形， 係使用水蒸氣阻隔膜ADMERR(三井化學公司製）。 (接著劑層） 作為接著劑層係使用「MODIC P604V」（商品名，三菱 132349.doc -23· 200920596 化學股份有限公司製）。 此外，在實施例14及15方面，作為接著劑層係使用水分 吸收接著劑之水蒸氣阻隔膜ADMERR(三井化學公司製）。 接著，實施多層片材之疊層。 f 在以上述順序將各層作疊層後，以丁型拉模（三菱重工業· 股份有限公司製）將其寬幅化。然後，在從τ型拉模所押出 之溶融片材的下面’將構成最外層之層壓用薄膜以平行方 式夾入，實施連續性，而使多層片材成形。 二在以接觸捲筒或氣動到刀方式使多層片材冷卻 固化的同時，並進行增減取料“㈣片材之厚度。 各層之厚度係如下所示。 [表1]I.MXD nylon ("S7007" manufactured by Mitsubishi Gas Chemical Co., Ltd.), thickness: 6% of total thickness. (Outermost layer: polyolefin layer D, F) The same resin as used in the above polyolefin layers A and B can be used. Further, in the case where the polyolefin layer D is a moisture absorbing adhesive layer, a water vapor barrier film ADMERR (manufactured by Mitsui Chemicals, Inc.) is used. (Binder layer) "MODIC P604V" (trade name, manufactured by Mitsubishi 132349.doc -23·200920596 Chemical Co., Ltd.) was used as the adhesive layer. Further, in the examples 14 and 15, a water vapor barrier film ADMERR (manufactured by Mitsui Chemicals, Inc.) using a moisture absorbing adhesive was used as the adhesive layer. Next, lamination of the multilayer sheets is carried out. f After laminating the layers in the above-described order, the layers were widened by a die-type die (manufactured by Mitsubishi Heavy Industries Co., Ltd.). Then, the laminate film constituting the outermost layer is sandwiched in parallel in the lower surface of the molten sheet extruded from the τ-type die, and the multilayer sheet is formed by performing continuity. 2. The multilayer sheet is cooled and solidified by contact roll or pneumatic to knife method, and the thickness of the (4) sheet is increased or decreased. The thickness of each layer is as follows. [Table 1]
(2)容器之製造 在將前述多層片材加熱後 成形機（住友重工製CM成形 '、人至 '，工•虔空 所製等）實施塞柱輔助真空壓^叫公司製、及朝之研究 接著，在容器之凸緣部：’將其熱成形為容器狀。 容器冲壓。 衣狀之切痕部（凹痕）後，進行 I32349.doc -24- 200920596 (3)包裝體之製造 —就盍材而言，係使用以下之多層構成者，進行熱密封於 容器之凸緣部而呈密封，製作為包裝體。 蓋材之構成：聚對苯二甲酸乙二醇酯（ρΕΤ)12 μηι/二軸 延伸尼龍薄膜（0Ny)15 p/紹（Α1)7 μιη/三井化學公司製 「OMAC CPP密封膠」7〇 _ <氧阻隔性之評價> 依以下之步驟，將容器之氧阻隔性作評價。 (1) 在除去氧之環境下，預先將還原液（沒食子酚 (pyrogallol) ·驗液）作調整準備。 (2) 將#述（1)之還原液在除去氧之環境下，進行填充. 封入於實施例1至1 5及比較例丨至5之容器，將容器整體進 行殺菌處理。 在此，作為空白（基準），而測定還原液之吸光度。 (3) 殺菌處理後，以30°Cx75% RH之促進條件保管於 恆溫恆濕槽，在經過既定之日數後，測定容器内之還原液 的吸光度’測定累積之氧穿透量。 評價之内容係如下所示。 A ： 非常優良 B ： 優良 C ： 良好 D ： 差（不可使用） (結果） 實施例1至15及比較例1至5的評價結果係如以下之表2所示。 I32349.doc -25· 200920596 [表2](2) Manufacture of the container After the above-mentioned multilayer sheet is heated, the molding machine (manufactured by Sumitomo Heavy Industries Co., Ltd., and the person to the factory) is equipped with a column-assisted vacuum pressure system, and The study was then carried out at the flange of the container: 'Ther is thermoformed into a container shape. Container stamping. After the cut-like portion (dent) of the garment, I32349.doc -24- 200920596 (3) Manufacture of the package - In the case of the enamel, the following layers are used to heat seal the flange of the container It is sealed and made into a package. The composition of the cover material: polyethylene terephthalate (ρΕΤ) 12 μηι / biaxially stretched nylon film (0Ny) 15 p / Shao (Α1) 7 μιη / Mitsui Chemical Co., Ltd. "OMAC CPP sealant" 7〇 _ <Evaluation of oxygen barrier property> The oxygen barrier property of the container was evaluated by the following procedure. (1) Prepare the reducing solution (pyrogallol • test solution) in advance in an environment where oxygen is removed. (2) The reducing solution of #1 (1) was filled in an oxygen-removing environment. The containers of Examples 1 to 15 and Comparative Examples 丨 to 5 were sealed, and the entire container was sterilized. Here, the absorbance of the reducing liquid was measured as a blank (reference). (3) After the sterilization treatment, it is stored in a constant temperature and humidity chamber under the promotion conditions of 30 ° C x 75% RH, and the absorbance of the reducing liquid in the container is measured after a predetermined number of days has passed. The content of the evaluation is as follows. A : Very good B : Excellent C : Good D : Poor (not usable) (Results) The evaluation results of Examples 1 to 15 and Comparative Examples 1 to 5 are shown in Table 2 below. I32349.doc -25· 200920596 [Table 2]
基材層 最外層 氧阻隔性 阻隔層 PP層 阻隔層 水分吸收 接著劑層 樹脂 厚度 滑石有無 樹脂 有無 實施例1 EVOH 12% 無 EVOH 無 C 實施例2 EVOH 12% 無 EVOH 有 C 實施例3 EVOH 12% 有 EVOH 無 C 實施例4 EVOH 12% 有 EVOH 有 B 實施例5 EVOH 12% 無 MXNy 有 C 實施例6 EVOH 12% 有 MXNy 無 B 實施例7 EVOH 12% 有 MXNy 有 A 實施例8 MXNy 6% 無 EVOH 無 C 實施例9 MXNy 6% 無 EVOH 有 C 實施例10 MXNy 6% 有 EVOH 無 C 實施例11 MXNy 6% 有 EVOH 有 B 實施例12 無 - 有 MXNy 有 B 實施例13 無 - 無 EVOH 有 C 實施例14 EVOH 12% 有 - - B 實施例15 MXNy 6% 有 - - B 比較例1 無 - 無 無 無 D 比較例2 EVOH 12% 無 無 無 D 比較例3 EVOH 12% 有 無 無 D 比較例4 MXNy 6% 無 無 無 D 比較例5 MXNy 6% 有 無 無 D 實施例1〜15係氧阻隔性為良好。其中，實施例7尤其氧 阻隔性良好。 另一方面，比較例1〜5係氧阻隔性不足，不具實用性。 【圖式簡單說明】 圖1係顯示與本發明之第1實施型態有關的多層片材之剖 面圖。 圖2係顯示與本發明之第1實施型態有關的包裝體之立體 圖。 圖3係顯示與本發明之第1實施型態有關的包裝體之要部 剖面圖。 圖4係顯示與本發明之第2實施型態有關的多層片材之剖 面圖。 -26- 132349.doc 200920596 圖5係顯示與本發明之第3實施型態有關的多層片材之剖 面圖。 【主要元件符號說明】 f 1A、1 B、1C 多層片材 2 包裝體 3 容器 4 蓋材 11、14 最外層 12 基材層 13 剝離層 31 凹部 32 凸緣部 33 切痕部 41 透明蒸鍍PET薄膜 42 二軸延伸尼龍薄膜（ONy薄膜） 43 L-LDPE薄膜 111 、 141 聚稀烴層 112 、 122 、 143 阻隔層 113 水分吸收接著劑層 121 第1聚烯烴層 123 第2聚烯烴層 142 第1水分吸收接著劑層 144 第2水分吸收接著劑層 P 内容物 132349.doc -27-Substrate layer Outer layer Oxygen barrier barrier layer PP layer Barrier layer Moisture absorption adhesive layer Resin thickness Talc with or without resin Example 1 EVOH 12% No EVOH No C Example 2 EVOH 12% No EVOH There is C Example 3 EVOH 12 % EVOH No C Example 4 EVOH 12% EVOH Yes B Example 5 EVOH 12% No MXNy Yes C Example 6 EVOH 12% MXNy No B Example 7 EVOH 12% MXNy Yes A Example 8 MXNy 6 % No EVOH No C Example 9 MXNy 6% No EVOH Yes C Example 10 MXNy 6% EVOH No C Example 11 MXNy 6% EVOH Yes B Example 12 None - Yes MXNy Yes B Example 13 None - None EVOH has C Example 14 EVOH 12% Yes - - B Example 15 MXNy 6% Yes - - B Comparative Example 1 None - No or no D Comparative Example 2 EVOH 12% No or no D Comparative Example 3 EVOH 12% with or without D Comparative Example 4 MXNy 6% No or no D Comparative Example 5 MXNy 6% With or without D Examples 1 to 15 were excellent in oxygen barrier properties. Among them, Example 7 is particularly excellent in oxygen barrier properties. On the other hand, Comparative Examples 1 to 5 were insufficient in oxygen barrier properties and were not practical. BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a cross-sectional view showing a multilayer sheet according to a first embodiment of the present invention. Fig. 2 is a perspective view showing a package body according to a first embodiment of the present invention. Fig. 3 is a cross-sectional view showing the main part of a package according to a first embodiment of the present invention. Fig. 4 is a cross-sectional view showing a multilayer sheet relating to a second embodiment of the present invention. -26- 132349.doc 200920596 Fig. 5 is a cross-sectional view showing a multilayer sheet relating to a third embodiment of the present invention. [Description of main components] f 1A, 1 B, 1C Multi-layer sheet 2 Package 3 Container 4 Cover material 11, 14 Outer layer 12 Base material layer 13 Release layer 31 Concave portion 32 Flange portion 33 Notch portion 41 Transparent vapor deposition PET film 42 biaxially stretched nylon film (ONy film) 43 L-LDPE film 111, 141 polycarbon layer 112, 122, 143 barrier layer 113 moisture absorbing adhesive layer 121 first polyolefin layer 123 second polyolefin layer 142 First moisture absorption adhesive layer 144 Second moisture absorption adhesive layer P Content 132349.doc -27-