CN104918866B - 用于粉末状材料的容器构造 - Google Patents

用于粉末状材料的容器构造 Download PDF

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CN104918866B
CN104918866B CN201380070055.3A CN201380070055A CN104918866B CN 104918866 B CN104918866 B CN 104918866B CN 201380070055 A CN201380070055 A CN 201380070055A CN 104918866 B CN104918866 B CN 104918866B
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peripheral wall
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CN104918866A (zh
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A·J·M·范普伊恩布鲁克
P·M·范巴林
S·F·克鲁修斯
P·C·罗伯茨
B·M·F·皮埃特
G·J·伯德特
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    • B65D77/00Packages formed by enclosing articles or materials in preformed containers, e.g. boxes, cartons, sacks or bags
    • B65D77/04Articles or materials enclosed in two or more containers disposed one within another
    • B65D77/0413Articles or materials enclosed in two or more containers disposed one within another the inner and outer containers being rigid or semi-rigid and the outer container being of polygonal cross-section formed by folding or erecting one or more blanks, e.g. carton
    • B65D77/0433Articles or materials enclosed in two or more containers disposed one within another the inner and outer containers being rigid or semi-rigid and the outer container being of polygonal cross-section formed by folding or erecting one or more blanks, e.g. carton the inner container being a tray or like shallow container, not formed by folding or erecting one or more blanks
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    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
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    • B65D85/00Containers, packaging elements or packages, specially adapted for particular articles or materials
    • B65D85/70Containers, packaging elements or packages, specially adapted for particular articles or materials for materials not otherwise provided for
    • AHUMAN NECESSITIES
    • A23FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
    • A23VINDEXING SCHEME RELATING TO FOODS, FOODSTUFFS OR NON-ALCOHOLIC BEVERAGES AND LACTIC OR PROPIONIC ACID BACTERIA USED IN FOODSTUFFS OR FOOD PREPARATION
    • A23V2002/00Food compositions, function of food ingredients or processes for food or foodstuffs
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
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Abstract

本发明涉及用于粉末状材料的包装(1),包括:接收材料的桶(17),桶具有底座(5)和带顶部边缘(6)的周界壁(7);外套筒(18),围绕桶的至少周界壁,从而支撑桶;能移除的膜(11),将桶中的粉末状材料与环境分离;和盖组件(9),包括连接在桶的周界壁的顶部边缘(6)上方且限定宽进入口(8)的周界边沿(3),和铰链地附接至边沿(3)以重复闭合进入口的盖(4)。此外,本发明涉及制造这样一种用于粉末状材料的包装的方法,包括:将桶滑动到套筒中,使得桶的至少周界壁被套筒包围,从而套筒支撑桶并且桶和套筒形成用于粉末状材料的容器。

Description

用于粉末状材料的容器构造
发明背景
技术领域
本发明涉及用于包装粉末产品的容器,具体而言,涉及用于婴儿营养品例如粉末状或颗粒状奶配方(milk formula)的容器。本发明还涉及一种包装,所述包装包括容器与一定量产品的组合。
背景技术
多年来,粉末状材料例如婴儿奶配方以各种形式的包装被销售。金属罐最初是优选的容器,因为生产它们相对容易且便宜,并且可以被密封用于长期贮存。密封件包括在第一次使用时被移除的横跨容器嘴的铝箔。因为单个容器将被使用较长时间,所以容器设有夹持在罐的外边沿上方的能重复密封的塑料盖。计量勺通常被包括在容器中,被分立地包装或者被包装在罐本身内。与现代材料相比,这样的罐现在被认为相对重且昂贵。
最近,在现有罐上改善的替代包装形式已变得可用。这些包装形式包括塑料和箔层压的容器主体以及铰接的盖组件,所述盖组件具有用于接收和保持量勺的设施。一种这样的包装在US 2008041861中被描述,所述专利的内容以整体引用的方式被纳入本文。所述包装具有用于初始地闭合包装的密封件,以及具有在所述密封件和容器的上部边缘之间的空间,用于在使用之前部分地接收勺。所述容器部件可由纸(板)、金属箔以及塑料材料的层压件组成。
另一类似的包装在WO2010071424中示出,所述专利的内容以整体引用的方式被纳入本文。上述包装包括一个大体上竖立的容器,即具有高度大于宽度或幅宽(breadth)的容器。盖设计已尝试提供至容器内部的相对大的进入口(access opening),使得用户可很容易地用所提供的勺移除所有的内容物。所述容器包括用一个或多个密封层覆盖或涂覆的卡板(cardboard)壁,用于将容器的内容物与环境密封阻隔。
这样材料的使用对于容器的可回收性是不利的,因为对于使用者,分离层压件的层是困难且乏味的工作。因此将期望提供一种替代的容器构造,所述容器构造缓解现有技术的至少一些所被感知到的不便。
发明内容
根据本发明,提供了一种用于粉末状材料的包装,所述包装包括:桶,用于接收所述材料,所述桶具有底座且具有带顶部边缘的周界壁;外套筒,围绕所述桶的至少所述周界壁,从而支撑所述桶;能移除的膜,用于将所述桶中的所述粉末状材料与环境分离;以及盖组件,包括周界边沿和盖,所述周界边沿用于连接在所述桶的所述周界壁的所述顶部边缘的上方并且限定一个宽进入口,所述盖铰接地附接至所述边沿用于重复闭合所述进入口。
在一个优选实施方案中,通过套筒围绕桶的周界壁的完整周界将所述桶的周界壁包围,从而套筒支撑所述桶,且所述桶和套筒一起形成用于粉末状材料的复合材料容器。由于外套筒向包含粉末状材料的桶提供支撑,所以用于桶的材料的量可以减少。此外,在外套筒和桶由不同材料制成的情况下,这些部件可以分离,从而促进包装的回收。
所述膜优选地连接至周界壁,从而将桶的开放的顶部侧闭合。连接的位置可以是周界壁的、距顶部边缘一段距离处的内侧,或者是桶本身的顶部边缘处。然而,应理解,所述膜还可以设置在盖组件上,在使用之前闭合边沿中的宽进入口。在本发明的一个优选实施方案中,膜是可破裂的或易碎的,且可包括限定开口区域的弱化的撕裂线以及拉片。以这种方式,所述膜可被打开,而不需要破坏膜与顶部边缘之间的连接或者膜与周界壁之间的连接(如果这种连接存在的话)。在这种情形中,膜的周界区域保持永久地连接在周界壁的顶部边缘处。
在第一次使用之后,一旦膜已被打开,则盖旨在重复闭合进入口以防止产品逸出(escape)。盖还应防止水分、灰尘和其他异物的进入。特别地,盖和边沿应该充分闭合,以防止小昆虫等进入。在闭合状态时最大70微米的开口通常被认为足以实现这一点。应理解,通过将膜用作盖和周界壁之间的密封件,容器和边沿之间的连接件也将以至少相同的公差闭合。还应注意,尽管所述包装被描述为适合用于粉末状材料产品,但它也可被用于其他产品,不限于液体、凝胶和糊状或粘性产品。
优选地,所述桶包括单个的隔间,所述隔间保存粉末状产品。为了达到包装的满内容物且允许使用过程中产品的移除,至所述桶的进入口应尽可能得大。优选地,宽进入口是矩形形状,基本上占据桶的最大面积。此外,矩形形状可以与圆角组合。另外,椭圆形状的进入口也是可能的。
根据一个实施方案,桶包括朝外延伸的凸缘,所述朝外延伸的凸缘在所述顶部边缘处,所述膜被连接至所述凸缘。通过沿着桶的周界壁的顶部边缘设置朝外延伸的凸缘,可以实现用于所述膜的相对大的连接区域。此外,所述朝外延伸的凸缘可被用作用于包装的盖部件的连接元件。
根据本发明的一个重要方面,桶和套筒彼此支撑,从而提供一种比每个元件被单独采用时的情形更强的壁结构。在一个优选实施方案中,这可以通过在桶的周界壁和外套筒之间提供过盈配合来实现。这种过盈配合可防止它们在正常使用过程中滑离彼此,并且还可以确保桶的周界壁被足够地支撑。应理解,粉末内容物的重量可以辅助将周界壁压至与外套筒相接触。在一个实施方案中,可在没有附加的粘合剂等的情况下提供过盈配合。这使得在处置时容易将容器的这两个部件分离,并且减少用于制造的时间量,因为可以省略添加粘合剂的工艺步骤。然而,应领会,在其他实施方案中,尤其当不存在过盈配合的实施方案中,可期望某种形式的粘合剂,例如用于增加包装的复合材料强度。也可在桶和套筒之间提供其他机械连接。
过盈配合可以各种方式实现。在一个优选实施方案中,桶和外套筒按照高公差制造,保证了所要求的配合。这可以在如下情形中实现:当套筒具有一个套筒底座且周界壁和外套筒有微小锥度时,由此在桶的一个深度处使得在桶的底座接合套筒底座之前实现过盈配合。应理解,套筒底座可以是开放的或者至少部分闭合的。具体而言,可能期望的是,套筒底座支撑桶的底座的底侧。
替代地,可通过使桶相对于套筒略微超尺寸,即桶比套筒大,实现过盈配合。一旦***桶,桶的竖立周界壁就将会变形以配合在套筒中,且一旦释放,桶的壁就将在套筒的周界壁上施加力,引起过盈配合。
附加地,所述配合还可要求外套筒的顶部边缘与桶的顶部边缘处于一个不同的距离处。为了使外套筒足以支撑内桶,套筒的顶部边缘未必需要与桶的顶部边缘叠合。当在顶部边缘之间保持相对小的距离时,桶和套筒的各自高度的公差可被接纳,使得套筒对桶的支撑可以被优化。此相对小的距离可为最多5.0mm,优选地为2mm,更优选地为1mm,从而周界壁直至其顶部边缘都被支撑,而非桶实际上被悬挂在其顶部边缘上。优选地,外套筒和/或桶的锥度将在1°和7°之间。
实现或改善过盈配合的其他方式可涉及使用用于套筒的冷缩配合材料、用于桶的形状记忆材料,或者可要求桶的周界壁由将会朝外挠曲至与外套筒接合的材料形成。
优选地,外套筒包括纸板材料。纸板是相对便宜的材料且相对强,使得它可以支撑内桶。就桶的周界壁和外套筒的挠曲模量而言,在桶的周界壁相对较弱且外套筒相对较强从而外套筒支撑桶的情况下,纸板是甚至更优选的。出于易于制造的目的,桶由聚合材料优选地为聚丙烯(PP)制成。然而,也可以使用其他聚合材料例如聚对苯二甲酸乙二醇酯(PET)或者聚乙烯(PE)。也可使用服从回收要求的多层材料。最优选地,桶包括多层层压件,所述多层层压件包括具有减少的氧气传输的中心阻挡层,例如EVOH等。桶的周界壁优选地形成为具有的厚度和强度使得,在没有外套筒的情况下,所述周界壁将太柔性而不能正常使用和堆叠。具体而言,周界壁可具有的强度使得,在没有外套筒的情况下,所述周界壁不能足够地支撑类似的满容器,而两个另外的容器的堆叠将倒塌。一旦桶和套筒组合,过盈配合就将向所形成的容器提供刚性和强度,使得盖组件可被连接至容器,并且盖在使用之后可被重复闭合,而没有容器倒塌的风险。桶和套筒的周界壁可分别具有约0.10mm至0.50mm、优选地0.15mm和0.40mm之间的厚度。套筒可包括50g/m2至400g/m2、优选地100-300g/m2的纸板。
根据一个实施方案,可在外套筒中设置观察窗口,使得当针对桶使用透明材料时,可以看见桶的内容物。
根据一个实施方案,所述容器可具有带圆角的大体方形(square)或矩形的外轮廓。
盖和边沿还可设置有防揭起罩(tamper evident closure)标志。这些标志可以是盖与边沿之间的其他方式的常规的接合机构,其中在第一次打开容器时必须破坏所述接合机构,并且所述接合机构使这种打开和破坏成为视觉可见的。
优选地,包装具有堆叠装置,使得数个相似的包装可被堆叠在彼此上面。所述包装可被限定为具有大体上由周界边沿和盖形成的上侧,以及主要为容器底座的下侧,即桶和外套筒的组合。所述包装在上侧上或上侧处优选地包括堆叠装置,并且在包装底座处包括互补装置。这样的装置可包括凸轮(cam)、凹槽、突出部、凸缘等,用于相对于一个容器定位另一个容器,尤其通过防止相对的横向移动。
优选地,所述包装具有宽度尺寸、深度尺寸和长度尺寸,且至少长度尺寸大于深度尺寸。这样的低轮廓(low profile)容器确保使用者可以用勺很容易地达到容器的底部,以取出最后的产品。优选地,勺被设置在包装内,且在使用之前可定位于膜上方。优选地,所述容器具有带圆角的大体方形或矩形的外轮廓。进入口也可为大体上类似的形状,但可为略微地更圆或更椭圆。
根据本发明的一个优选实施方案,边沿和盖由聚合材料一起整体成型。用于盖和边沿的优选材料为聚丙烯(PP)、聚乙烯(PE)和聚对苯二甲酸乙二醇酯(PET)或其组合物,尽管技术人员将熟知能提供类似工程性能的多种替代物。铰接连接可以形成为活动铰接。也可以设想替代的两件式构造。还可构想的是,勺与盖构造整体成型,并且在第一次使用时分离。
本发明还包含如上所描述的包装,所述包装包括被密封在容器内的一定量的粉末状材料,优选地为粉末状营养产品。应理解,在此上下文中,粉末状营养产品可包括粉末、颗粒、小球等,并且所述营养产品可被赋予其最广的可能含义。然而,本发明最专门针对幼儿或婴儿营养产品例如奶配方。
由于用于粉末状营养产品以及具体地对于婴儿营养品,在加工过程中必须采取特别的防护(care)。因此包装应该在高防护区(high-care zone)中被填充和密封,并且与营养产品接触的所有元件表面应该仅暴露于高防护区。出于本发明的目的,高防护旨在表示相对于大气压力处于过压的环境,所述过压优选地为5Pa和50Pa之间的过压,更优选地为5Pa和30Pa之间的过压,最优选地为5Pa和20Pa之间的过压。高防护区中的温度优选地被保持在18℃和25℃之间,更优选地在19℃和23℃之间,且相对湿度优选地被控制在20%RH和80%RH之间,更优选地在30%RH和60%RH之间,最优选地在35%RH和50%RH之间。此外,高防护环境内的气氛(atmosphere)优选地被过滤以移除微粒物,例如通过HEPA(高效微粒吸收)过滤器,所述HEPA过滤器包括根据EN 1822:2009的H10过滤器或更高效的过滤器。优选地,与产品接触的所有部件通过无菌、电离的空气射流而被清洁,并且通过视觉***检查瑕疵或异物。此外,包装在低氧气氛中被填充。这可以包括在填充程序之前和填充程序过程中并且在应用膜前,用氮或二氧化碳冲洗。
与高防护区相对,其他步骤(不包括用营养产品填充和密封桶)可在低防护区(low-care zone)中执行。出于本发明的目的,低防护旨在表示其中的环境被保持处于周围条件。所述周围条件包括周围压力,意味着没有产生过压情况。此外,与高防护条件相比,低防护区中的温度优选地并未被严格地控制,意味着低防护中的温度可以在12℃和30℃之间,更优选地在15℃和26℃之间。微粒过滤可被安装在低防护区域中,或被安装用于空气流动至低防护区中,但为节省费用,优选地不实施HEPA过滤。
根据本发明的另一方面,还公开了一种制造用于粉末状材料的包装的方法,包括:
-提供用于接收所述粉末状材料的桶,所述桶具有底座且具有带顶部边缘的周界壁;
-提供盖组件,所述盖组件包括周界边沿和盖,所述周界边沿限定一个宽进入口,所述盖铰接地附接至所述边沿用于重复闭合所述进入口;
-用所述粉末状材料填充所述桶;
-将所述桶滑动到套筒中,使得所述桶的至少所述周界壁被所述套筒包围,从而套筒支撑所述桶,并且所述桶和套筒形成用于所述粉末状材料的容器;
-提供用于将所述粉末状材料与环境分离的膜,所述膜具有通过一条弱化线而彼此分离的开口区域和周界区域;
-将所述膜密封至所述桶的所述周界壁;以及
-将所述盖组件的所述周界边沿连接在所述桶的所述顶部边缘上方。
容器从保存粉末状产品的内桶构造。将所述桶滑动到套筒中以形成容器,并且向相对薄的桶提供支撑。制造步骤可以是如上所描述的顺序,尽管首先将桶滑动到套筒中然后填充桶也是另一种可能。然而,在将桶滑动到套筒之前用粉末状材料填充桶是优选的,因为产品向桶的周界壁提供附加的支撑。此外,桶的内容物向套筒施加朝外的力,从而促进桶和套筒之间的过盈配合。另外,在将桶滑动到套筒之前,膜可被设置在桶的顶部边缘上方,以向桶提供额外支撑。
根据一个实施方案,所述方法包括用机械连接将盖组件的周界边沿连接在顶部边缘上方,即形成配合。
在所述方法的一个特别形式中,容器的周界壁是通过热成型或吹塑来成型的。
附图说明
参照多个示例性实施方案的以下附图将进一步领会本发明的特征和优点,在附图中:
图1以部分分解立体图示出了根据本发明的第一实施方案的包装;
图2示出了图1的实施方案的立体图。
具体实施方式
图1示出了根据本发明的第一实施方案的包装1的部分分解图,所述包装1包括容器2和盖组件9。所述盖组件9包括:周缘边沿3,用于将所述盖组件9连接至所述容器2;以及,盖4,用于在打开之后,重复闭合所述容器2。容器2包括桶17和套筒18。桶17具有底座5和周界竖立壁7,所述周界竖立壁7具有顶部边缘6。所述桶17的顶部边缘6包括从周界壁朝外延伸的凸缘23。膜11在凸缘23处被连接至桶17的顶部边缘6,用于将粉末状产品(未示出)与环境密封隔开。套筒18具有另外的底座19和另外的周界竖立壁14,所述另外的周界竖立壁14带有另外的顶部边缘15。替代地,套筒18可以包括仅另外的周界壁,使桶17的底座5未被覆盖。所述桶17仅具有一个隔间24,所述隔间保存产品(未示出)。
在此视图中,可以看见,纸板套筒18围绕聚合材料的桶17设置。套筒18向桶17提供刚性,并且按照可能的要求能够很容易地被印刷。桶17和套筒18彼此支撑,从而提供一种比每个元件被单独采用时的情形更强的壁结构。所述支撑通过过盈配合实现,所述过盈配合防止在正常使用过程中桶17和套筒18彼此滑离,并且确保桶17的周界壁7被足够地支撑。粉末内容物(未示出)的重量可以辅助将桶17的周界壁7压至与外套筒18相接触。周界边沿3配合在桶17的顶部边缘6上方。周界边沿3和顶部边缘6限定进入口8。进入口8在使用之前通过膜11密封。盖4和周界边沿3被布置为附接至凸缘23上,以完成包装1。为此,周界边沿3配合在凸缘23上方。在制造过程中,桶17可首先用奶粉(未示出)填充。然后膜11可被连接至顶部边缘6,以形成一个气密密封单元。在生产的最终阶段,外套筒18可被滑动到桶上方,所述套筒具有所期望的印刷,并且盖组件9可被应用。然而,在执行其他制造步骤之前首先将套筒18滑动到桶17上方也是可能的。然后接下来通过顶部边缘6上方的膜11密封桶17,且盖组件9接下来在凸缘23处被应用到顶部边缘6上。
图2以立体图示出了图1的实施方案。容器2具有从它的底座5至它的周界壁7的顶部边缘6测得的深度尺寸d。它还具有宽度尺寸w和长度尺寸l。边沿3形成进入口8,提供至容器2的内部的进口部。在制造过程中,将内桶17滑动到套筒18中,以形成容器2。然后内桶17被外套筒18支撑。桶17的顶部边缘6和外套筒的顶部边缘15彼此相距一段距离,使得这些容器部件的高度尺寸中的公差可被接纳。膜11具有弱化线21和拉片20,所述拉片20可被抓握以便沿弱化线21移除所述拉片。如可见的,撕裂线21界定周界区域13,在通过拉拉片20已经将中心开口区域12移除时,周界区域13维持附接至周界壁7。在使用时,通过沿铰链16向后铰转盖4以显露进入口8来打开包装1。然后可抓握拉片20,以沿着弱化线21使膜11破裂。然后开口区域12可被移除,留下连接至周界壁7的周界区域13,且暴露粉末状材料(未示出)。勺(未示出)被用来执行粉末状材料的配量。产品使用后,盖4能重复闭合。
在图1和图2的实施方案中,容器2的底座具有一个轮廓(未示出),所述轮廓与盖上的凹处22互补。在贮存和展示过程中,包装1可彼此堆叠,从而一个包装1的底座5、19与下方的包装1的盖4相接合。在使用时,使用者移除膜11并使用勺分配产品。盖4随后起闭合进入口8的作用。

Claims (16)

1.用于粉末状材料的包装(1),包括:
-热成型的桶(17),用于接收所述材料,所述桶具有底座(5)且具有带顶部边缘(6)的、聚合材料的周界壁(7),且设有朝外延伸的凸缘;
-外纸板套筒(18),围绕所述桶的所述周界壁的完整周界将所述桶的所述周界壁包围,从而接合和支撑所述桶的所述周界壁;所述外纸板套筒(18)具有一个套筒底座,并且所述套筒底座支撑桶的底座的底侧;
-能移除的膜(11),用于将所述桶中的所述粉末状材料与环境分离;以及
-盖组件(9),包括周界边沿(3)和盖(4),所述周界边沿(3)用于连接至所述凸缘并且限定一个宽进入口(8),所述盖(4)铰接地附接至所述边沿用于重复闭合所述进入口。
2.根据权利要求1所述的包装,其中所述桶包括单个产品容纳隔间(24)。
3.根据权利要求1或2所述的包装,其中所述膜被连接至所述凸缘。
4.根据权利要求1或2所述的包装,其中所述外纸板套筒的另外的顶部边缘(15)处于距所述桶的顶部边缘一段距离处。
5.根据权利要求1或2所述的包装,其中所述宽进入口是矩形形状。
6.根据权利要求1或2所述的包装,其中所述桶以过盈配合方式与所述外纸板套筒接合。
7.根据权利要求1或2所述的包装,其中所述膜包括限定开口区域(12)的弱化的撕裂线(21),以及拉片(20)。
8.根据权利要求1或2所述的包装,其中所述边沿和所述盖由聚合材料整体成型。
9.根据权利要求1或2所述的包装,其中所述桶的所述周界壁的聚合材料是层压件,所述层压件包括聚丙烯且包括具有减少的氧气传输的中心阻挡层。
10.根据权利要求1或2所述的包装,其中所述桶的所述周界壁相对弱且所述外纸板套筒相对强,使得所述外纸板套筒支撑所述桶。
11.根据权利要求1或2所述的包装,其中所述盖或所述边沿设有防揭起罩标志。
12.根据权利要求1或2所述的包装,其中所述粉末状材料包括粉末状营养产品。
13.根据权利要求12所述的包装,包括密封在所述桶内的一定量的粉末状营养产品。
14.根据权利要求12所述的包装,其中所述粉末状营养产品包括婴儿奶配方。
15.一种制造用于粉末状材料的包装的方法,包括:
-提供用于接收所述粉末状材料的热成型的桶(17),所述桶具有底座(5)且具有带顶部边缘(6)的、聚合材料的周界壁(7),且设有朝外延伸的凸缘;
-提供盖组件(9),所述盖组件(9)包括周界边沿(3)和盖(4),所述周界边沿(3)限定一个宽进入口(8),所述盖(4)铰接地附接至所述边沿用于重复闭合所述进入口;
-用所述粉末状材料填充所述桶;
-将已填充的所述桶滑动到外纸板套筒(18)中,使得通过所述外纸板套筒围绕所述桶的所述周界壁的完整周界将所述桶的至少所述周界壁包围,从而外纸板套筒接合和支撑所述桶的所述周界壁,并且使得所述外纸板套筒(18)的套筒底座支撑桶的底座的底侧,并且所述桶和外纸板套筒形成用于所述粉末状材料的容器(2);
-提供用于将所述粉末状材料与环境分离的膜(11),所述膜具有通过一条弱化的撕裂线(21)而彼此分离的开口区域(12)和周界区域(13);
-将所述膜密封至所述桶的所述周界壁;以及
-将所述盖组件的所述周界边沿连接至所述凸缘。
16.根据权利要求15所述的方法,其中在将所述桶滑动到所述外纸板套筒之前,所述桶用所述粉末状材料填充。
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