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CN103079967B - 层积体、包装容器及包装体 - Google Patents

层积体、包装容器及包装体 Download PDF

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Publication number
CN103079967B
CN103079967B CN201180042073.1A CN201180042073A CN103079967B CN 103079967 B CN103079967 B CN 103079967B CN 201180042073 A CN201180042073 A CN 201180042073A CN 103079967 B CN103079967 B CN 103079967B
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CN
China
Prior art keywords
layer
enhancement layer
thickness
laminate
packing container
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
CN201180042073.1A
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English (en)
Other versions
CN103079967A (zh
Inventor
小泉真一
山本光
小川达也
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Kyodo Printing Co Ltd
Original Assignee
Kyodo Printing Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
Application filed by Kyodo Printing Co Ltd filed Critical Kyodo Printing Co Ltd
Publication of CN103079967A publication Critical patent/CN103079967A/zh
Application granted granted Critical
Publication of CN103079967B publication Critical patent/CN103079967B/zh
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Abstract

包装容器(40)具备：吸收液体及气体中至少一者的吸收膜(50)、隔着粘接层(60)层积在吸收膜(50)上的增强层(70)、隔着粘接层(60)层积在增强层(70)上的铝层(80)以及隔着粘接层(60)层积在铝层(80)上并抑制液体及气体中至少一者进入的屏障层(90)。在该包装容器(40)中，利用吸收膜(50)保持吸收性并利用屏障层(90)及铝层(80)确保屏障性，同时利用在吸收膜(50)与铝层(80)之间形成的增强层(70)提高包装容器(40)的整体强度。

Description

层积体、包装容器及包装体
技术领域
本发明涉及层积有多个层的层积体、使用该层积体的包装容器及包装体。
背景技术
以往将这种层积体用于例如药的包装容器(袋材料、盖等)。
药是为了治病、疗伤或者为了保持、增进健康而饮用、涂抹的医药品。
这里，粉状的药是封入薄纸袋或薄膜等的药，但粒状或者胶囊状的药是作为称为PTP(挤压包装)的泡罩包装体而被成品化的药。
泡罩(blister)包装体在其内部收纳粒状或者胶囊状的药并能够隔着透明的包装容器视觉辨认内部的药。而且，对于泡罩包装体，通过用指头等按压每个透明的包装容器中的药，使作为盖材料的铝基体材料破裂，从而能够取出内部的药。
这里，药有很多种，其中有耐湿性弱的药、也有臭气强的药。因此，已知有通过在包装容器(层积体)的内部配置具有吸附剂的吸附层，从而使该包装容器带有吸附功能的技术(国际公开WO2006/115264号公报：参照专利文献1)。
根据该技术，可以认为通过使泡罩包装体的包装容器带有吸附功能，即使不在泡罩包装体的内部配套干燥剂等，也能够维持干燥状态、防止氧化、高效地吸收臭气等。
另外，药中还存在易受来自外部的湿气、紫外线影响的药。在这样的情况下，包装容器为透明时，药本来的作用、效力有可能变差。因此，已知有在包装容器的内部形成铝层的技术(日本专利第3983131号公报：参照专利文献2)。
根据该技术，在包装容器的内部形成铝层，因而包装容器自身变得不透明，其内部的药不能够视觉辨认，但取而代之，可认为能够提高屏障(barrier)性(气密性)。
发明人等着眼于这一点，即如例如国际公开WO2006/115264号的说明书所记载的那样，通过使包装容器带有吸附功能，从而能够维持干燥状态、防止氧化、高效地吸收臭气。
另外，另一方面，发明人等着眼于这一点，即如日本国专利第3983131号公报所记载的那样，通过在包装容器形成铝层，从而能够提高屏障性。
然而，在简单地组合上述2个技术的方式即按从上向下依次层积屏障层/粘接层/铝层/粘接层/吸附层的方式中，在将层积体形成圆顶(形成凹坑、凹陷)时，面临包装容器的顶部被戳破、或者包装容器的下端、袋的肩部(凸状部的角部分)破裂这类问题。
从以上的背景考虑，期望有如下的技术：保持吸收性的同时能够发挥屏障性，且不存在成形时包装容器(层积体)的一部分被戳破、或者包装容器(层积体)的端部破裂的情况。
专利文献1：国际公开WO2006/115264号公报
专利文献2：日本专利第3983131号公报
发明内容
在此公开的第1发明是层积体，具备：吸收液体及气体中至少一者的吸收层；隔着粘接层层积在所述吸收层上的增强层；隔着粘接层层积在所述增强层上的铝层；以及隔着粘接层层积在所述铝层上并抑制液体及气体中至少一者进入的屏障层。
因此，第1发明的层积体从下向上依次层积吸收层、粘接层、增强层、粘接层、铝层、粘接层、屏障层。
将该层积体从吸收层侧向屏障层侧按压而成形时，制成以屏障层为最外层、吸收层为最内层的圆顶形的包装容器(层积体)。
在该情况下，最内层的吸收层发挥吸收液体、气体的功能，且最外层的屏障层与铝层这2层的屏障性(气密性)得到提高。
而且，在本申请发明中，在吸收层与铝层之间形成增强层，因而利用该增强层来提高层积体的整体强度，能够消除在成形时层积体的顶部被戳破、下端的端部或袋的肩部破裂之类的问题。
作为层积体的结构，优选增强层通过选自由双轴拉伸聚酰胺、聚对苯二甲酸乙二醇酯及聚氯乙烯组成的组中的任一个来形成。
这样，通过适当选择增强层的材料，能够提供强度高、易于成形的层积体。
作为层积体的结构，优选增强层及屏障层通过双轴拉伸聚酰胺来形成。
这样，通过利用双轴拉伸聚酰胺一起形成增强层、屏障层，能够提供强度高、且易于成形的层积体。
作为层积体的结构，优选增强层通过聚对苯二甲酸乙二醇酯或聚氯乙烯来形成，屏障层通过双轴拉伸聚酰胺来形成。
这样，通过利用聚对苯二甲酸乙二醇酯形成增强层，利用双轴拉伸聚酰胺形成屏障层，能够提供强度高且易于成形的层积体。
作为层积体的结构，优选增强层通过双轴拉伸聚酰胺来形成，屏障层通过聚对苯二甲酸乙二醇酯来形成。
这样，通过利用双轴拉伸聚酰胺形成增强层，利用聚对苯二甲酸乙二醇酯形成屏障层，能够提供强度高且易于成形的层积体。
作为层积体的结构，优选增强层及屏障层通过聚对苯二甲酸乙二醇酯来形成。
这样，通过利用聚对苯二甲酸乙二醇酯一起形成增强层、屏障层，能够提供强度高且易于成形的层积体。
根据这些解决方案，通过适当变更屏障层与增强层的组合，能够提供富有变化的更实用的层积体。
作为层积体的结构，优选针对与拉伸方向垂直的方向，增强层的拉伸断裂强度PTD在55MPa≤PTD＜360MPa的范围内，增强层的拉伸断裂伸长率LTD在45％＜LTD＜430％的范围内。
通过将增强层的拉伸断裂强度PTD及拉伸断裂伸长率LTD设定为这样的范围内，能够良好地进行成形，而没有在成形时层积体的顶部被戳破、或者下端的端部、袋的肩部破裂的情况。
在这一点，在上述以外的范围即全部满足以下的条件的情况下，在成形时层积体的顶部被戳破、或者下端的端部、袋的肩部破裂，是不可能成形的范围：
(1)拉伸断裂强度PTD在PTD＜55MPa或360MPa≤PTD的范围内的情况，
(2)拉伸断裂伸长率LTD在LTD≤45％或430％≤LTD的范围内的情况。
根据这些结构，通过将增强层所用的材料的拉伸断裂强度与拉伸断裂伸长率规定在适当的范围内，能够稳固增强层的效果。
第2发明的包装容器使用上述的层积体。另外，第2发明的包装容器是一种包装容器，其具备：吸收液体及气体中至少一者的吸收层、隔着粘接层层积在所述吸收层上的增强层、隔着粘接层层积在所述增强层上的铝层以及隔着粘接层层积在所述铝层上并抑制液体及气体中至少一者进入的屏障层。
依据第2发明的包装容器，能够在包装容器实现上述层积体的作用及效果。
第3发明的包装体是收纳固体制剂(其中，含有琥珀酸索非那新或1-{[(α-异丁酰氧基乙氧基)羰基]氨甲基}-1-环己基乙酸的情况除外)的包装体，其特征在于，该包装体具备：形成有收纳所述固体制剂的凹状的收纳部的包装容器；以及具有密封所述固体制剂的气密性的盖材料，包装容器包含层积体，层积体层积有：吸收液体及气体中至少一者的吸收层；隔着粘接层层积在吸收层上的增强层；隔着粘接层层积在增强层上的铝层；以及隔着粘接层层积在铝层上并抑制液体及气体中至少一者进入的屏障层，吸收层与所述增强层层积并配设于收纳固体制剂的一侧。
根据第3发明的包装体，能够在包装体实现上述层积体的作用及效果。
以上公开的发明能够使利用吸收层保持吸收性、利用屏障层及铝层确保屏障性、并且利用在吸收层与铝层之间形成的增强层提高包装容器(层积体)的整体强度从而实现可成形。
附图说明
图1是示出1个实施方式的泡罩包装体的概略截面图，
图2是对包装容器40的层积构造进行说明的图，
图3是示出实施例及比较例的各材料所使用的膜的列表的图，
图4是示出实施例的各材料及厚度的值的图，
图5是示出比较例的各材料及厚度的值的图，以及
图6是示出图3所示的各膜的TD方向的物性值的图，是示出与各膜的拉伸方向垂直的方向(TD)的物性值的图。
具体实施方式
以下，对层积体、包装容器及包装体的实施方式进行说明。
图1是示出1个实施方式的泡罩包装体的概略截面图。
泡罩包装体10是作为包装体的一个例子而列举的，是将粒状或胶囊状的药等固体制剂20收纳在内部的容器。
固体制剂20是粒状或胶囊状的药等内容物。关于固体制剂20，能够适用期望的材料或适当组合期望的材料而得的材料，但含有琥珀酸索非那新或1-{[(α-异丁酰氧基乙氧基)羰基]氨甲基}-1-环己基乙酸的材料除外。
泡罩包装体10具备成为基底的盖材料30。盖材料30是具备密封固体制剂20的气密性的部件。盖材料30能够使用PVC(Poly Vinyl Chloride：聚氯乙烯)或EVA(Ethylene Vinyl Acetate：乙烯醋酸乙烯基共聚物树脂)覆层Al(铝)等。
另外，泡罩包装体10具备包装容器40。包装容器40是用成形机等将层积有多层的层积体成形为圆顶形而成。包装容器40将内部的固体制剂20包在其中以进行保护。包装容器40形成有收纳固体制剂20的凹状的收纳部。作为将包装容器40成形圆顶形时的成形方法(形成凹状收纳部的方法)，可举出平板式压空成形法、塞头辅助压空成形法、圆顶式真空成形法、塞头成形方法等PTP成形方法。盖材料30与包装容器40能够通过叠合彼此的内面来进行热密封从而粘接。在按照原样时粘接性低的情况下，盖材料30或包装容器40的任一方也可进一步形成粘接剂层或热密封性树脂层。而且，泡罩包装体10中，通过用指头等从包装容器40侧按压固体制剂20，盖材料30破裂，从而能够取出固体制剂20。
接着，对包装容器40(层积体)的层积构造进行说明。
图2是对包装容器40的层积构造进行说明的图。
包装容器40在最下层具备吸收膜(吸收层)50。
吸收膜50是3层构造的膜，具有主要承担水分、臭气的吸收的主吸收层51以及保护主吸收层51的表层(skin layer)52。此外，也可使表层52带有吸收功能。
吸收膜50与后述的增强层70层积并且配设于收纳固体制剂20(参照图1)一侧。
在本实施方式中，主吸收层51使用向LDPE(低密度聚乙烯)添加作为吸收剂的沸石后的层。另外，对表层52使用LLDPE(直链状低密度聚乙烯)。吸收膜50的厚度为例如30～200μm左右。此外，吸收膜50也可以不是3层构造，而是1层、2层或4层以上的层结构，使用材料也不限于这些。
吸收膜50能够适当地使用利用膨胀法、T模法、共压出等将树脂与吸收剂形成为膜状或片状而得的膜。
作为构成主吸收层51及表层52的树脂的材料，可以使用选自由LDPE(低密度聚乙烯)、LLDPE(直链状低密度聚乙烯)、PP(聚丙烯)、氯化聚丙烯、饱和聚酯、EAA(乙烯-丙烯酸共聚体)、EMAA(乙烯-甲基丙烯酸共聚体)、EEA(乙烯-丙烯酸乙酯共聚体)、EMA(乙烯-丙烯酸甲酯共聚体)、离聚物、羧酸改性聚乙烯、羧酸改性聚丙烯、羧酸改性EVA、PVC(聚氯乙烯)、聚苯乙烯等组成的组中的至少1种或这些的混合物。构成主吸收层51的树脂与构成表层52的树脂可以是相同树脂，也可以是不同树脂。
另外，作为构成吸收膜50的吸收剂的材料，可以使用沸石(天然沸石、人工沸石、合成沸石)、氧化钙或硫酸镁等化学吸收剂、有氧损失的氧化铈等脱氧剂等。沸石含有分子筛，优选分子筛的有效细孔径为左右。分子筛按照吸收的对象物的大小来选择其有效细孔径。
另外，所述沸石的有效细孔径为以上时是合适的。
沸石吸收速度快，所以能够很快吸收水分。作为沸石的一个例子的分子筛是用于根据分子的大小的不同而分离物质的多孔的粒状物质，是具有均匀细孔的构造，吸收细孔空洞中的小分子从而具有一种筛子的作用。
另外，包装容器40具备隔着粘接层60层积在吸收膜50上的增强层70。
增强层70是用于提高包装容器40整体强度的层，例如可以使用双轴拉伸聚酰胺或PET(聚对苯二甲酸乙二醇酯)、PVC。增强层70的厚度例如为15～60μm左右。此外，只要在厚度容许的范围内，增强层70可以设置多个层。
另外，包装容器40具备隔着粘接层60层积在增强层70上的铝层80。
铝层80是用于提高药等固体制剂20的屏障性的层，例如可以使用合金铝箔。铝层80的厚度例如为16～60μm左右。
另外，包装容器40具备隔着粘接层60层积在铝层80上的屏障层90。
屏障层90与下层的铝层80都是用于提高屏障性的层，例如可以使用双轴拉伸聚酰胺、PET(聚对苯二甲酸乙二醇酯)。屏障层90是起到抑制液体、气体进入的作用的层。屏障层90的厚度例如为5～30μm左右。
粘接层60承担粘接各层的任务，例如能够使用聚氨酯类粘接剂等。
然后，固定该包装容器40的两端部并从吸收膜50侧向屏障层90侧按压包装容器40的中央部分而进行成形时，得到以屏障层90为最外层、吸收膜50为最内层的圆顶形的包装容器40(参照图1)。
接着，举出具体的实施例进行说明。此外，公开的发明并不限于这些实施例。
图3是示出实施例及比较例的各材料所使用的膜的列表的图。
各膜的详细情况如下。
〔第1膜〕
(1)膜种类：OPP(双轴拉伸聚丙烯)
(2)厚度：40μm
(3)品名：PYLEN-OT P2002(东洋纺织株式会社制；注册商标)
(4)拉伸断裂强度PMD：140MPa
(5)拉伸断裂强度PTD：360MPa
(6)拉伸断裂伸长率LMD：220％
(7)拉伸断裂伸长率LTD：40％
这里，MD是指拉伸方向的量，TD是指与拉伸方向垂直的方向的量。
〔第2膜〕
(1)膜种类：PET
(2)厚度：25μm
(3)品名：TEFLEX FT3PE(帝人杜邦膜株式会社；注册商标)
(4)拉伸断裂强度PMD：160MPa
(5)拉伸断裂强度PTD：170MPa
(6)拉伸断裂伸长率LMD：220％
(7)拉伸断裂伸长率LTD：210％
〔第3膜〕
(1)膜种类：PET
(2)厚度：12μm或25μm
(3)品名：E5100(东洋纺织株式会社制；东洋纺酯膜E5100类型；注册商标)
(4)拉伸断裂强度PMD：230MPa
(5)拉伸断裂强度PTD：240MPa
(6)拉伸断裂伸长率LMD：100％
(7)拉伸断裂伸长率LTD：90％
〔第4膜〕
(1)膜种类：无拉伸聚酰胺
(2)厚度：25μm
(3)品名：DIAMIRON C-Z(三菱树脂株式会社制；注册商标)
(4)拉伸断裂强度PMD：150MPa
(5)拉伸断裂强度PTD：140MPa
(6)拉伸断裂伸长率LMD：410％
(7)拉伸断裂伸长率LTD：430％
〔第5膜〕
(1)膜种类：双轴拉伸聚酰胺
(2)厚度：15μm或25μm
(3)品名：BONYL W(株式会社兴人；注册商标)
(4)拉伸断裂强度PMD：260MPa
(5)拉伸断裂强度PTD：270MPa
(6)拉伸断裂伸长率LMD：120％
(7)拉伸断裂伸长率LTD：110％
〔第6膜〕
(1)膜种类：双轴拉伸聚酰胺
(2)厚度：15μm
(3)品名：HARDEN N2102(东洋纺织株式会社制；注册商标)(4)拉伸断裂强度PMD：220MPa
(5)拉伸断裂强度PTD：290MPa
(6)拉伸断裂伸长率LMD：110％
(7)拉伸断裂伸长率LTD：65％
〔第7膜〕
(1)膜种类：PVC
(2)厚度：60μm
(3)品名：VINYFOIL C-455(三菱树脂株式会社制；注册商标)(4)拉伸断裂强度PMD：85MPa
(5)拉伸断裂强度PTD：55MPa
(6)拉伸断裂伸长率LMD：140％
(7)拉伸断裂伸长率LTD：170％
〔第8膜〕
(1)膜种类：OPP
(2)厚度：20μm
(3)品名：U-1(三井化学Tohcello株式会社制)
(4)拉伸断裂强度PMD：130MPa
(5)拉伸断裂强度PTD：265MPa
(6)拉伸断裂伸长率LMD：160％
(7)拉伸断裂伸长率LTD：45％
〔第9膜〕
(1)膜种类：CPP(无拉伸聚丙烯)
(2)厚度：25μm
(3)品名：PYLEN-CT P1128(东洋纺织株式会社制；注册商标)
(4)拉伸断裂强度PMD：54MPa
(5)拉伸断裂强度PTD：34MPa
(6)拉伸断裂伸长率LMD：390％
(7)拉伸断裂伸长率LTD：560％
接着，举出组合这些片材而形成层积体(包装容器)时的具体实施例进行说明。
图4是示出实施例的各层的材料及厚度的值的图。
〔实施例1〕
(1)屏障层：厚度15μm的双轴拉伸聚酰胺(图3中；使用第5膜)
(2)铝层：厚度40μm的铝(Al)
(3)增强层：厚度15μm的双轴拉伸聚酰胺(图3中；使用第5膜)
(4)吸收层：厚度50μm的吸湿膜(是上述吸收膜50，层结构为LLDPE(厚度：10μm)/向LDPE添加沸石4A后的层(厚度：30μm)/LLDPE(厚度：10μm))
〔实施例2〕
(1)屏障层：厚度15μm的双轴拉伸聚酰胺(图3中；使用第5膜)
(2)铝层：厚度40μm的铝(Al)
(3)增强层：厚度25μm的双轴拉伸聚酰胺(图3中；使用第5膜)
(4)吸收层：厚度50μm的吸湿膜(是上述吸收膜50，层结构为LLDPE(厚度：10μm)/向LDPE添加沸石4A后的层(厚度：30μm)/LLDPE(厚度：10μm))
〔实施例3〕
(1)屏障层：厚度15μm的双轴拉伸聚酰胺(图3中；使用第5膜)
(2)铝层：厚度40μm的铝(Al)
(3)增强层：厚度25μm的PET(图3中；使用第2膜)
(4)吸收层：厚度50μm的吸湿膜(是上述吸收膜50，层结构为LLDPE(厚度：10μm)/向LDPE添加沸石4A后的层(厚度：30μm)/LLDPE(厚度：10μm))
〔实施例4〕
(1)屏障层：厚度15μm的双轴拉伸聚酰胺(图3中；使用第5膜)
(2)铝层：厚度40μm的铝(Al)
(3)增强层：厚度60μm的PVC(图3中；使用第7膜)
(4)吸收层：厚度50μm的吸湿膜(是上述吸收膜50，层结构为LLDPE(厚度：10μm)/向LDPE添加沸石4A后的层(厚度：30μm)/LLDPE(厚度：10μm))
〔实施例5〕
(1)屏障层：厚度25μm的双轴拉伸聚酰胺(图3中；使用第5膜)
(2)铝层：厚度40μm的铝(Al)
(3)增强层：厚度25μm的双轴拉伸聚酰胺(图3中；使用第5膜)
(4)吸收层：厚度50μm的吸湿膜(是上述吸收膜50，层结构为LLDPE(厚度：10μm)/向LDPE添加沸石4A后的层(厚度：30μm)/LLDPE(厚度：10μm))
〔实施例6〕
(1)屏障层：厚度12μm的PET(图3中；使用第3膜)
(2)铝层：厚度40μm的铝(Al)
(3)增强层：厚度15μm的双轴拉伸聚酰胺(图3中；使用第5膜)
(4)吸收层：厚度50μm的吸湿膜(是上述吸收膜50，层结构为LLDPE(厚度：10μm)/向LDPE添加沸石4A后的层(厚度：30μm)/LLDPE(厚度：10μm))
〔实施例7〕
(1)屏障层：厚度15μm的双轴拉伸聚酰胺(图3中；使用第6膜)
(2)铝层：厚度40μm的铝(Al)
(3)增强层：厚度15μm的双轴拉伸聚酰胺(图3中；使用第6膜)
(4)吸收层：厚度50μm的吸湿膜(是上述吸收膜50，层结构为LLDPE(厚度：10μm)/向LDPE添加沸石4A后的层(厚度：30μm)/LLDPE(厚度：10μm))
〔实施例8〕
(1)屏障层：厚度25μm的PET(图3中；使用第2膜)
(2)铝层：厚度40μm的铝(Al)
(3)增强层：厚度25μm的PET(图3中；使用第2膜)
(4)吸收层：厚度50μm的吸湿膜(是上述吸收膜50，层结构为LLDPE(厚度：10μm)/向LDPE添加沸石4A后的层(厚度：30μm)/LLDPE(厚度：10μm))
图5是示出比较例的各层的材料及厚度的值的图。
以下是比较例的详细情况。在比较例中，代替增强层而使用替代层。这里，替代层是与本申请发明的增强层为不同概念的层，是代替本申请发明的层、至少是为了与上述各实施例进行比较而代替增强层所使用的层。
〔比较例1〕
(1)屏障层：厚度15μm的双轴拉伸聚酰胺(图3中；使用第5膜)
(2)铝层：厚度40μm的铝(Al)
(3)替代层：厚度40μm的OPP(图3中；使用第1膜)
(4)吸收层：厚度50μm的吸湿膜(是上述吸收膜50，层结构为LLDPE(厚度：10μm)/向LDPE添加沸石4A后的层(厚度：30μm)/LLDPE(厚度：10μm))
〔比较例2〕
(1)屏障层：厚度25μm的无拉伸聚酰胺(图3中；使用第4膜)
(2)铝层：厚度40μm的铝(Al)
(3)替代层：厚度25μm的无拉伸聚酰胺(图3中；使用第4膜)
(4)吸收层：厚度50μm的吸湿膜(是上述吸收膜50，层结构为LLDPE(厚度：10μm)/向LDPE添加沸石4A后的层(厚度：30μm)/LLDPE(厚度：10μm))
〔比较例3〕
(1)屏障层：厚度15μm的双轴拉伸聚酰胺(图3中；使用第5膜)
(2)铝层：厚度40μm的铝(Al)
(3)替代层：厚度20μm的OPP(图3中；使用第8膜)
(4)吸收层：厚度50μm的吸湿膜(是上述吸收膜50，层结构为LLDPE(厚度：10μm)/向LDPE添加沸石4A后的层(厚度：30μm)/LLDPE(厚度：10μm))
〔比较例4〕
(1)屏障层：厚度15μm的双轴拉伸聚酰胺(图3中；使用第5膜)
(2)铝层：厚度40μm的铝(Al)
(3)替代层：厚度25μm的CPP(图3中；使用第9膜)
(4)吸收层：厚度50μm的吸湿膜(是上述吸收膜50，层结构为LLDPE(厚度：10μm)/向LDPE添加沸石4A后的层(厚度：30μm)/LLDPE(厚度：10μm))
〔现有例〕
(1)屏障层：厚度15μm的双轴拉伸聚酰胺(图3中；使用第5膜)
(2)铝层：厚度40μm的铝(Al)
(3)替代层：无(厚度0μm)
(4)吸收层：厚度50μm的吸湿膜(是上述吸收膜50，层结构为LLDPE(厚度：10μm)/向LDPE添加沸石4A的层(厚度：30μm)/LLDPE(厚度：10μm))
〔评价项目〕
然后，对实施例1～8、比较例1～4及现有例，在以下成形条件下评价成形时的情况。
〔成形条件〕
(1)成形机：MW-220株式会社KANAE制连续成形机
(2)塞头的材质：PTFE(PolyTetraFluoroEthylene；聚四氟乙烯)类树脂
(3)塞头的直径：10mm
(4)目标深度：3.3mm
这里，塞头是指在成形时进行挤出的棒，目标深度是指使包装容器(层积体)凹到何种程度的值(圆顶形状的深度)。
〔评价结果〕
用肉眼观察成形为圆顶形状的包装容器来进行评价。
其结果是，实施例1～8的容器不产生裂缝、裂痕等，特别能无问题地成形。因此，可知实施例1～8的基体材料的组合是能成形的组合。
另一方面，比较例1～4及现有例中，产生包装容器的顶部被戳破(袋破裂)、包装容器的下摆部分或袋的肩部破裂、包装容器产生裂缝的问题。因此，可知比较例1～4及现有例的基体材料的组合为不能成形的组合。
从这些实施例与比较例的对比可知以下事项。
(1)利用双轴拉伸聚酰胺形成增强层及屏障层时，可进行成形而在包装容器(层积体)中不产生裂缝等。
(2)利用聚对苯二甲酸乙二醇酯或聚氯乙烯形成增强层、利用双轴拉伸聚酰胺形成屏障层时，可进行成形而在包装容器(层积体)中不产生裂缝等。
(3)利用双轴拉伸聚酰胺形成增强层、利用聚对苯二甲酸乙二醇酯形成屏障层时，可进行成形而在包装容器(层积体)中不产生裂缝等。
(4)利用聚对苯二甲酸乙二醇酯形成增强层及屏障层时，可进行成形而在包装容器(层积体)中不产生裂缝等。
图6是示出图3所示的各膜的TD方向(Transverse Direction；垂直方向)的物性值的图。
在该图中，纵轴示出针对TD方向的拉伸断裂伸长率(％)，横轴示出针对TD方向的拉伸断裂强度(MPa)。
在本实施方式中，使用TD方向的物性值而不是使用各膜的MD方向(Machine Direction；流方向)来进行评价。其理由是，PTP(挤压包装)的成形性强烈依赖于TD方向的参数，与MD方向的参数关联性较小。即，增强层(增强膜)在制膜时被沿膜的MD方向拉伸且在被拉伸的同时卷绕在辊上，所以膜的MD方向与TD方向相比强度较强、容易耐受PTP(挤压包装)的成形的负荷。另一方面，TD方向在使膜拉伸、或不使膜拉伸时，产生各种主要因素，且产生的主要因素的强弱互不相同，所以强度比较弱。因此，在本实施方式中，使用容易受PTP(挤压包装)的成形性影响的TD方向的物性值进行评价。
将图3所示的各膜的拉伸断裂伸长率(TD)及拉伸断裂强度(TD)绘制于图中时，成为图6所示的状态。
然后，在绘制各膜的物性值的状态下叠合上述评价结果，则导出图6的四角形的虚线(图中参照区域A2)。
即，在上述评价结果中，图5的比较例1～4及现有例受到不可成形的评价，但它们是使用图3的第1膜、第4膜、第8膜、第9膜作为代替增强层而使用的替代层的示例。另外，现有例没有形成增强层。
因此，从上述各实施例及各比较例导出的区域用四边形的虚线包围，将其内侧的区域视为成形性良好的区域。
根据该四角形的虚线的区域可知以下事项。
对于增强层，针对与拉伸方向垂直的方向(TD)，将拉伸断裂强度PTD设定在55MPa≤PTD＜360MPa的范围内，将拉伸断裂伸长率LTD设定在45％＜LTD＜430％的范围内时，能够良好地进行成形，在成形时不会有包装容器(层积体)的顶部戳破、或者下端的端部、袋的肩部破裂的情况。此外，将拉伸断裂强度PTD的下限值设定为55MPa是因为，作为包装用基体材料膜，除受用途限制的特殊情况外基本上不存在拉伸断裂强度PTD的值不足30MPa的情况，第9膜(拉伸断裂强度PTD＝34MPa)受到不可成形的评价，所以将第7膜的拉伸断裂强度PTD的值(55MPa)设定为拉伸断裂强度PTD的下限值。
另一方面，可知只要在这些的范围外(区域A2的范围外)，如比较例1～4及现有例那样，在成形时包装容器(层积体)的顶部被戳破、或者下端的端部、袋的肩部破裂，是不能成形的范围。
公开的发明并不限于上述实施方式及实施例，可以伴随各种的变形、替换来实施。另外，在上述实施方式及实施例中举出的层积体及包装容器的结构、材料全都是优选例示，当然可对这些进行适当变形而实施发明。
符号说明
10泡罩包装体(包装体)
20固体制剂
30盖材料
40包装容器(层积体)
50吸收膜(吸收层)
60粘接层
70增强层
80铝层
90屏障层

Claims (9)

1.一种层积体，其是用于具备收纳固体制剂的包装容器以及盖材料的包装体的所述包装容器的层积体，所述盖材料层积于所述包装容器，用于密封所述固体制剂，所述层积体具备：
吸收液体及气体中至少一者的吸收层；
隔着粘接层层积在所述吸收层上、用于防止成形时所述包装容器被戳破或破裂的增强层；
隔着粘接层层积在所述增强层上的铝层；以及
隔着粘接层层积在所述铝层上并抑制液体及气体中至少一者进入的屏障层，
所述增强层配置于所述吸收层和所述铝层之间。
2.根据权利要求1所述的层积体，其中，
所述增强层通过选自由双轴拉伸聚酰胺、聚对苯二甲酸乙二醇酯及聚氯乙烯组成的组中的任一个来形成。
3.根据权利要求1所述的层积体，其中，
所述增强层及所述屏障层通过双轴拉伸聚酰胺来形成。
4.根据权利要求1所述的层积体，其中，
所述增强层通过聚对苯二甲酸乙二醇酯或聚氯乙烯来形成，
所述屏障层通过双轴拉伸聚酰胺来形成。
5.根据权利要求1所述的层积体，其中，
所述增强层通过双轴拉伸聚酰胺来形成，
所述屏障层通过聚对苯二甲酸乙二醇酯来形成。
6.根据权利要求1所述的层积体，其中，
所述增强层及所述屏障层通过聚对苯二甲酸乙二醇酯来形成。
7.根据权利要求1所述的层积体，其中，
针对与拉伸方向垂直的方向，所述增强层的拉伸断裂强度PTD在55MPa≤PTD＜360MPa的范围内，所述增强层的拉伸断裂伸长率LTD在45％＜LTD＜430％的范围内。
8.一种包装容器，使用权利要求1至7中任一项所述的层积体。
9.一种包装体，是收纳除含有琥珀酸索非那新或1-{[(α-异丁酰氧基乙氧基)羰基]氨甲基}-1-环己基乙酸的固体制剂外的固体制剂的包装体，其特征在于，
该包装体具备：
形成有收纳所述固体制剂的凹状的收纳部的包装容器；以及
具有密封所述固体制剂的气密性的盖材料，
所述包装容器包含层积体，
所述层积体层积有：
吸收液体及气体中至少一者的吸收层；
隔着粘接层层积在所述吸收层上、用于防止成形时所述包装容器被戳破或破裂的增强层；
隔着粘接层层积在所述增强层上的铝层；以及
隔着粘接层层积在所述铝层上并抑制液体及气体中至少一者进入的屏障层，
所述吸收层与所述增强层层积并配设于收纳所述固体制剂的一侧，
所述增强层配置于所述吸收层和所述铝层之间。
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US20150291337A1 (en) 2015-10-15
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