CN106255642B - 用于包装套筒的热活化的方法和装置 - Google Patents

用于包装套筒的热活化的方法和装置 Download PDF

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CN106255642B
CN106255642B CN201580023081.XA CN201580023081A CN106255642B CN 106255642 B CN106255642 B CN 106255642B CN 201580023081 A CN201580023081 A CN 201580023081A CN 106255642 B CN106255642 B CN 106255642B
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tubular wrapping
wrapping sleeve
nozzle member
heating device
packaging
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CN106255642A (zh
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马丁·鲁格
丹尼尔·韦伯
霍尔格·珀尔
马尔科·普鲁斯
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SIG Combibloc Services AG
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Abstract

本发明涉及一种用于由纸板/塑料复合材料制成的、特别是用于液态食品的包装的管状包装套筒(1)的热活化的方法和装置，其中，利用加热装置将热气体施加到所述管状包装套筒(1)，以制造所述包装的基部或头部。根据本发明，为了以构造上简单的生产方式实现同时加热以活化接触表面，其中活化过程所需要的能量尽可能完全地用于加热待被活化的表面，所述加热装置放置成通过将所述加热装置在用于活化的所述管状包装套筒(1)内部移动，来与待被活化的表面有效接触。另外，所述加热装置包括至少一个带有排出开口的喷嘴元件(4)，所述喷嘴元件的外部形状对应于所述管状包装套筒(1)的待活化的端部的内部形状。

Description

用于包装套筒的热活化的方法和装置
技术领域
本发明涉及一种用于由纸板/塑料复合材料制成的、特别是用于液态食品的包装的管状包装套筒的热活化的方法，其中，通过加热装置将热气体施加到所述管状包装套筒，以制造所述包装的基部或头部，其中，将所述加热装置放置成通过将所述加热装置在用于活化的所述管状包装套筒内部移动，来与待活化的表面有效接触，并且其中所述管状包装套筒被布置在芯轴轮的芯轴上。另外，本发明涉及一种用于由纸板/塑料复合材料制成的、特别是用于液态食品的包装的管状包装套筒的热活化的装置，其中，通过加热装置将热气体施加到所述管状包装套筒以制造所述包装的基部或头部，并且其中，所述加热装置具有至少一个带有排出开口的喷嘴元件，所述喷嘴元件的外部形状对应于所述管状包装套筒的待活化的端部的内部形状。
背景技术
由纸板/塑料复合材料制成的、特别是用于液态食品的矩形包装的制造已经长期为公众所知。该包装在整个高度上通常具有长方形或正方形横截面，但是近来还可在市面购买到这种在其整个高度上不必有恒定横截面的包装。在其整个表面上彼此附接的材料(层压制品)用作这种类型的包装的包装材料，其中纸板层作为承载材料，而层压的塑料层用来保护承载材料以免水分渗透到承载材料层中。取决于包装的类型和待包装的产品，层压制品也可以包括另外的层，例如作为氧气和光的屏障的薄的铝箔层或者另外的塑料层(诸如EVOH)以及因此而必需的粘合剂层。
在大多数的情况下，特别是在饮料领域，已知的复合包装包括组合的打开元件和倾倒元件，其以液密方式附接到各自的复合包装。这种类型的复合包装从EP 0 907 576 A1已知，该包装包含在其头部侧上的由塑料材料制成的倾倒元件，倾倒元件包含在填充机中的复合包装中。为了这样做，首先从通过PE层中的纵向接缝的切口预制管状包装套筒。然后在芯轴轮上进行进一步处理，其中管状包装套筒在具有正方形的横截面的芯轴上滑动，以首先形成后续的复合包装的突出的自由端部并将其密封。如同所示出的，当复合包装设置有倾倒元件时，该复合包装的头部侧首先被完成，其中倾倒元件通过芯轴来供给并且管状包装套筒在该芯轴上滑动。头部的折叠通过以前引入的折痕线来执行，其中利用冲压工具将待移位的山形墙表面移位到芯轴的前面上。为了永久且液密的连接，复合材料的相关接触表面利用热气体来加热，例如利用无菌的热空气来加热，从而外PE表面局部融化并由此而被活化。然后活化的PE表面通过冲压工具而被加压一段足够长的时期，以使所完成的山形墙表面以液密方式冷却。
从DE 10 2010 050 502 A1已知了一种用于制造其中使倾倒元件包含在山形墙表面中的包装的装置和方法，该倾倒元件并未布置在平坦的山形墙表面中，而是布置在以截棱锥形式的山形墙中。除了四个山形墙表面，以这种方式制造的包装还在山形墙区域中具有四个耳部，其从山形墙区域突出并由过多的包装材料形成，这些耳部被移位到山形墙表面上并被附接在那儿。在此基本的制造是相同，也就是通过无菌的热空气对待密封的接触表面进行活化，其中管状的包装还在芯轴轮的芯轴上滑动。
因此，已知的制造过程中的活化处理通过添加用于活化的热气体的加热装置来进行。这样做，活化的持续时间和温度必须被最佳调整以适应复合材料，以实现所期望的山形墙区域的液密连接。这同样也适用于其中首先执行基部区域的折叠和密封的包装，该包装并未从底部来填充，而是以“经典的方式”从顶部来填充。一些已知的加热装置具有复杂的结构并且从而对于制造和维护密集型是昂贵的。
发明内容
因此，本发明的目的是设计并进一步发展在开头所提到的方法和对应的用于管状包装套筒的热活化的装置，从而所使用的加热装置可以利用简单的构造来制造并且实现均匀的加热来活化接触表面。此外，存在以下需求：活化过程所需要的能量尽可能完全地用于加热待活化的表面。
根据该方法，本发明的目的得以实现在于：在引入加热装置之前，管状包装套筒的自由端部从长方形或正方形的横截面变形到圆形横截面。通过该类型的内部接触，活化过程所需要的能量被直接且均匀地置于待加热的表面中。尽管芯轴具有对应于包装的后续形状的长方形或正方形的横截面，但本发明已经认为将自由端部临时成形成圆形的横截面对于活化过程是极其有利的。以这样的方式，有特别均匀的加热，这是由于没有热气体在其中可累积的边缘或拐角区域。这导致了改进的密封过程以及最佳的能源效率，且没有过热的风险。
根据对应的装置，本发明的目的得以实现在于：喷嘴元件的自由端部为圆柱形形状，并且提供了用于使管状包装套筒的自由端部变形的装置。根据本发明，这确保了所有的热空气直接到达复合材料的待活化的塑料表面并确保所使用的能源的最佳利用。从构造观点来看，假设圆柱形的喷嘴元件的外部形状的直径几乎对应于管状包装套筒的内径，此时的管状包装套筒在活化区域中具有圆形的横截面，这是特别实用的。通过协调喷嘴元件和包装套筒的构造，所使用的能量可被直接用来活化塑料表面，而没有任何损失发生。
本发明的另一教导提供了在活化过程期间加热装置相对于管状包装套筒移动。通过这样做，待活化的表面可通过用于热气体的排出开口的运动来增加。然而，还可以没有相对运动而执行该活化过程。
本发明的另一实施方式提供了喷嘴元件的排出开口为狭缝状的或穿孔的。根据本发明的另一实施方式，特别有利的是，假设喷嘴元件的排出开口被设计为周向环形间隙。一方面，这允许喷嘴元件的特别有利的制造，并且在另一方面，它使得极其均匀地加热待活化的表面。
根据本发明的另一教导，喷嘴元件具有圆柱形的外部件和能够连接到所述外部件的内部件，除此之外还有在所述外部件与所述内部件之间的作为用于供给所述热气体的环形通道的环形域。从构造的观点来看，圆柱形的喷嘴极易制造为旋转部件，方便地具有外径，该外径基本上对应于临时再成形的管状包装套筒的自由端部的内径。
本发明的另一优选的实施方式提供了排出开口终止于周向凹槽中。这样，不需要额外的通道、孔等等来将热气体供给到周向凹槽中。这不仅意味着特别简单的制造类型，而且意味着特别均匀的加热并从而意味着改善的密封过程。
本发明的另一教导提供了所述外部件与所述内部件能够在轴向方向上相对于彼此移动以调节所述间隙的尺寸。这样，可以限定并设置用于各自的活化过程的必要的热气体的最佳设置，并且如果必要的话，也可毫不费力地将最佳设置调节至改变的条件，诸如另一包装套筒。
在本发明的另一实施方式中，提供了所述内部件能够在保持元件的螺纹中调节，所述保持元件牢固地固定到所述外部件。该类型的构造是特别有利的，这是由于其意味着非常精确的调节是可能的。优选地，通过六角扳手从外侧进行调节，其中所述内部件具有对应的居中布置的六角承窝。
本发明的另一实施方式提供了所述内部件通过螺钉和/或反向元件固定在所述保持元件中。这意味着该内部件以确保调节的方式固定。
本发明的另一教导提出了上文提到的用于使所述管状包装套筒的自由端部变形的装置具有在径向方向上从外侧作用于所述包装套筒且其啮合位置一起形成环状内部形状的数个工具。这样做，特别有利的是，假设提供半中空的圆柱形成形鄂作为工具，其被彼此径向相反地布置并且通过朝向彼此移动而将管状包装套筒的自由端部从其长方形或正方形的横截面临时地改变成所期望的圆形形状。
用于使管状包装套筒的自由端部变形的装置的替选实施方式提供了能够在轴向方向上滑动到待设置的包装套筒上的模，该模可在轴向方向上在围绕芯轴的外侧上移动并移向芯轴轮，其中模的自由端部从芯轴的横截面形状穿过到具有圆形的横截面的区域中。然而，制造该类型的模显著地比优选的钳元件成本更高。
附图说明
以下利用仅仅示出一个优选的示例性实施方式的附图来更详细地描述本发明。
在附图中：
图1示出管状包装套筒的透视图；
图2示出根据本发明的装置的喷嘴元件的透视图；
图3示出来自图2的喷嘴元件的轴向截面；
图3a示出喷嘴元件的外部件和内部件的局部打开视图；以及
图4利用穿过包装套筒以提供更好的视图的截面来示出处于活化位置中的喷嘴元件的透视图。
具体实施方式
图1示出了作为用于未来的饮料包装的包装材料的管状包装套筒1。该类型的包装套筒1通过来自切口的纵向接缝来制成，其中该纵向接缝并未示出。其可以处于任何位置中，例如处于中心区域或在其中一个边缘2上。此外，折痕线3可被认为是用来折叠未来的包装的基部和山形墙区域(头部区域)。
图2示出了理想地用于根据本发明的装置的喷嘴元件4，其首先且基本上包括中空圆柱形的外部件5，以及圆锥形的分配部6和布置在外部件5中的内部件7，其中内部件7几乎完全密封中空圆柱形的外部件5的开口侧。在内部件7的前面上，凹槽8可被认为是用来容纳将外部件5附接至内部件7的螺钉9的头部。
为了提供更好的视图，在图3中以轴向截面示出了喷嘴元件4。在此显然的是，内部件7具有中心孔10，该中心孔10在凹槽8中终止并在端部区域中具有六角承窝11。外部件5和内部件7的固定通过上面所提到的穿过该孔10的螺纹连接来执行。此处，螺钉9穿过凹槽8和孔10与保持元件12螺接，其中，螺钉头部保持在凹槽8中。保持元件12耦合地连接到外元件5并且具有内螺纹(未示出)，内部件7的内端部的外螺纹螺接到保持元件12的内螺纹中从而可以在轴向方向上调节。
在根据图3a的打开视图中，可以确定孔10在其邻近于凹槽8的端部区域中具有六角承窝11。该六角承窝11用于在轴向方向上外部件5和内部件7的相对调节，如在下面更详细解释。螺钉9的端部啮合反向元件13的内螺纹，创建外部件5与内部件7精确地间隔开的固定，如可从图3中所清楚看到的。
保持元件12具有足够数目的用于使热气体穿过的通道14。通道14通向内部件7与外部件5之间的环形域15。对于活化所必需的热气体(例如无菌的热空气)的供给优选在图3中所示出的实施方式中执行，其中狭窄的环形间隙16仍然为内部件7的前面的外边缘与中空的圆柱形外部件5之间的排出开口，从而在喷嘴元件4的整个长度上，以周向方式发生热气体的均匀排出。紧靠在喷嘴排出开口后方，在所示的本实施方式中且在这方面优选的是有周向凹槽17，如可在图2、图3和图3a中清楚看到。从流体技术观点看，这能够特别均匀地供给气体。
最后，图4示出了在活化过程期间的上文更详细描述的喷嘴元件4。将喷嘴元件4引入到包装套筒的开口端部中，该包装套筒的另一端部在芯轴轮的芯轴(未示出)上滑动。可以认识到，喷嘴元件4的圆柱形的外部件5的外径近似对应于所形成的管状包装套筒1的内径，这利用穿过中间的截面来示出以提供更好的视图。
现在，为了可以将管状包装套筒1的自由端部改变成所期望的圆形形状，根据本发明，两个半中空的圆柱形的成形鄂18确保了该对应的成形。在此，为了简洁起见，也仅仅示出了两个成形鄂18中的一个。为了执行该变形，两个成形鄂18朝向彼此移动，其中管状包装套筒1的自由端部被以简单且简洁的方式“自动地”改变成所期望的圆形形状。
通过根据本发明的解决方案，在活化过程中实现了最佳的能量利用，其中通过热气体在喷嘴元件的整个圆周上的均匀应用而可靠地实现了最佳均匀的活化。

Claims (16)

1.一种用于由纸板和塑料的复合材料制成的管状包装套筒的热活化的方法，其中，通过加热装置将热气体施加到所述管状包装套筒，以制造包装的基部或头部，其中，所述加热装置放置成通过将所述加热装置在用于活化的所述管状包装套筒内部移动，来与待被活化的表面有效接触，并且其中，所述管状包装套筒被布置在芯轴轮的芯轴上，
其特征在于，
在引入所述加热装置之前，将所述管状包装套筒的自由端部从长方形或正方形的横截面变形成圆形横截面。
2.根据权利要求1所述的方法，其特征在于，
在所述活化过程期间，将所述加热装置相对于所述管状包装套筒移动。
3.根据权利要求1所述的方法，其特征在于，
所述管状包装套筒被用于液态食品的包装。
4.一种用于由纸板和塑料的复合材料制成的管状包装套筒(1)的热活化的装置，其中，通过加热装置将热气体施加到所述管状包装套筒(1)，以制造包装的基部或头部，并且其中，所述加热装置具有至少一个带有排出开口的喷嘴元件(4)，所述喷嘴元件的外部形状对应于所述管状包装套筒(1)的待活化的端部的内部形状，
其特征在于，
所述喷嘴元件(4)的自由端部是圆柱的形状，并且提供用于使所述管状包装套筒(1)的自由端部变形的装置。
5.根据权利要求4所述的装置，其特征在于，
所述喷嘴元件(4)的所述排出开口为狭缝状的或穿孔的。
6.根据权利要求4所述的装置，其特征在于，
所述喷嘴元件(4)的所述排出开口被设计为周向环形间隙(16)。
7.根据权利要求4至6中任一项所述的装置，其特征在于，
所述喷嘴元件(4)具有圆柱形的外部件(5)和能够连接到所述外部件的内部件(7)，并且在于，所述外部件(5)与所述内部件(7)之间的环形域被设计为用于供给所述热气体的环形通道(15)。
8.根据权利要求4至6中任一项所述的装置，其特征在于，
所述排出开口终止于周向凹槽(17)中。
9.根据权利要求7所述的装置，其特征在于，
所述喷嘴元件(4)的所述排出开口被设计为周向环形间隙(16)，所述外部件(5)与所述内部件(7)能够在轴向方向上相对于彼此移动以调节所述环形间隙(16)的尺寸。
10.根据权利要求9所述的装置，其特征在于，
所述内部件(7)能够在牢固地固定到所述外部件(5)的保持元件(12)的螺纹中调节。
11.根据权利要求10所述的装置，其特征在于，
所述内部件(7)通过螺钉(9)和/或反向元件(13)固定在所述保持元件(12)中。
12.根据权利要求10或11所述的装置，其特征在于，
所述内部件(7)具有居中布置的六角承窝(11)。
13.根据权利要求4所述的装置，其特征在于，
所述用于使所述管状包装套筒(1)的自由端部变形的装置具有在径向方向上从外侧作用于所述管状包装套筒(1)且其啮合位置一起形成环状内部形状的数个工具。
14.根据权利要求13所述的装置，其特征在于，
提供半中空的圆柱形成形鄂(18)作为工具。
15.根据权利要求4所述的装置，其特征在于，
所述用于使所述管状包装套筒的自由端部变形的装置具有能够在轴向方向上滑动到所述管状包装套筒上的模。
16.根据权利要求4所述的装置，其特征在于，
所述管状包装套筒(1)被用于液态食品的包装。
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