CN100384623C - 叠层材料、叠层材料的制造方法、叠层材料的热封方法和包装容器 - Google Patents

叠层材料、叠层材料的制造方法、叠层材料的热封方法和包装容器 Download PDF

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CN100384623C
CN100384623C CNB2003801100261A CN200380110026A CN100384623C CN 100384623 C CN100384623 C CN 100384623C CN B2003801100261 A CNB2003801100261 A CN B2003801100261A CN 200380110026 A CN200380110026 A CN 200380110026A CN 100384623 C CN100384623 C CN 100384623C
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layer
heat
laminated material
aforementioned
supporting layer
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CN1756653A (zh
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菊地英世
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Tetra Laval Holdings and Finance SA
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  • Chemical & Material Sciences (AREA)
  • Composite Materials (AREA)
  • Laminated Bodies (AREA)
  • Containers And Plastic Fillers For Packaging (AREA)
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  • Lining Or Joining Of Plastics Or The Like (AREA)
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Abstract

即使是无菌包装和冷冻包装不同的包装系统，也可以挪用不同的包装系统的一部分，借此实现整个包装系统的高效运行/运用/操作。有助于能量和材料的节省，制造成本的降低。叠层材料是该叠层材料有一个支撑层(1)和热塑性最内层(3)组成的包装容器的用带状叠层材料。在将被高频感应加热而热封的区域上具有叠层在支撑层(1)与热塑性最内层(3)之间的导电层(2)，以便由感应加热所生成的热量传到最内层，导电层(2)是由设在蒸镀膜(8)的基底膜(9)外表面上的金属导电材料组成的金属蒸镀层(2)。

Description

叠层材料、叠层材料的制造方法、叠层材料的热封方法和包装容器
技术领域
本发明涉及叠层材料、叠层材料的制造方法、叠层材料的热封方法和包装容器。
背景技术
在由支撑层和热塑性最内层组成的包装容器用带状叠层材料中，为了容器形成而通过高频感应加热被热封的区域上具有叠层在支撑层与热塑性最内层之间的碳黑导电性层的叠层材料，公知的有例如特公昭63-222号公报中所记载的材料。在图1中所示的叠层材料中，构成有支撑层、热塑性最内层、它们的中间层的碳黑导电性层。
此外，配置有在带状叠层材料的将被热封的部分上张贴高频感应加热用铝箔带的张贴装置，靠加热器的高频线圈对铝箔带进行高频感应加热的包装机械例如在特许第2694286号中述及。
关于液体食品的包装纸容器，分成能够常温保存的无菌包装，和向牛奶容器那样冷冻流通的冷冻包装。各自的包装叠层材料大体上分别制造成无菌包装与冷冻包装，由各自的包装填充机，以各自的封装方法填充包装液体食品。
但是，即使是无菌包装与冷冻包装的不同的包装系统，如果挪用不同的包装系统的一部分，则包装系统总体的高效的运行/运用/操作成为可能，进而，有利于能量或材料的节省、制造成本的降低。
发明内容
本发明目的在于提供一种解决上述课题的叠层材料、叠层材料的制造方法、叠层材料的热封方法和包装容器。
解决该课题的本发明的叠层材料和包装容器是由支撑层和热塑性最内层组成的包装容器用带状叠层材料，在为了容器形成通过高频感应加热被热封的区域上具有叠层在支撑层与热塑性最内层之间的导电性层，以便由感应加热发生的热量传到最内层，该导电性层是由设在叠层前述支撑层与前述热塑性最内层之间的蒸镀膜的基底膜上的金属性导电材料组成的金属蒸镀层。
借此，即使是无菌包装与冷冻包装的不同的包装系统，挪用不同的包装系统的一部分，包装系统总体的高效的运行/运用/操作成为可能，进而，有利于能量或材料的节省、制造成本的降低。
本发明技术方案1所述的叠层材料是至少由支撑层和热塑性最内层组成的包装容器用带状叠层材料，其特征在于，
在为了该容器形成而通过高频感应加热被热封的区域上具有叠层在该支撑层与该热塑性最内层之间的导电性层，以便由该感应加热发生的热量传到该最内层，
该导电性层是由设在全面叠层在前述支撑层与前述热塑性最内层之间的蒸镀膜的基底膜上的金属性导电材料组成的金属蒸镀层。
本发明技术方案2所述的叠层材料，前述导电性层是由设在全面叠层在前述支撑层与前述热塑性最内层之间的蒸镀膜的基底膜内表面上的金属性导电材料组成的金属蒸镀层。
本发明技术方案3所述的叠层材料，前述导电性层是由设在全面叠层在前述支撑层与前述热塑性最内层之间的蒸镀膜的基底膜外表面上的金属性导电材料组成的金属蒸镀层。
本发明技术方案4所述的叠层材料的制造方法是至少由支撑层和热塑性最内层组成的包装容器用带状叠层材料的制造方法，其特征在于，准备多个支撑层的原料卷；从前述原料卷依次拉出带状支撑层，在包括为了该容器形成而通过高频感应加热被热封的区域的该支撑层内表面上，全面叠层由基底膜，与设在该基底膜的内表面或外表面上的金属性导电材料的金属蒸镀层组成的蒸镀膜；在该长带状支撑层的外表面上，间接或直接地印刷容器图案，同时或依次在印刷后的该带状支撑层的外表面和内表面上形成同种或异种、单个或多个热塑性层，把上游侧的带状支撑层的前端与下游侧的带状支撑层的后端接合，形成更长的带状支撑层。
本发明技术方案5所述的叠层材料的热封方法的特征是，准备带状叠层材料，所述带状叠层材料是至少由支撑层和热塑性最内层组成的包装容器用叠层材料，在为了该容器形成而通过高频感应加热被热封的区域具有叠层在该支撑层与该热塑性最内层之间的导电性层，以便由该感应加热发生的热量传到该最内层，该导电性层是由设在全面叠层在前述支撑层与前述热塑性最内层之间的蒸镀膜的基底膜上的金属性导电材料组成的金属蒸镀层；把该带状叠层材料形成为管状，并在长度方向上进行纵封；在该叠层材料管内填充液体食品；在填充后的该管的横断方向上，每隔规定间隔通过高频感应加热形成热封区域进行横封，切断前述热封区域的中央而形成一个个的容器。
本发明技术方案6所述的包装容器是至少由支撑层和热塑性最内层组成的叠层材料所形成的包装容器，其特征在于，在为了该容器形成而通过高频感应加热被热封的区域处的，由设在全面叠层在前述支撑层与前述热塑性最内层之间的蒸镀膜的基底膜上的金属性导电材料组成的金属蒸镀的导电性层上，通过该感应加热发生的热量，最内层熔融或软化而与对置的软化或熔融的最内层形成热封区域。
具有上述构成的本发明具有以下的作用。
本发明的包装容器用带状叠层材料为可以形成多个容器的长长的带状，因此，可连续而高速地进行包装容器的填充制造。
在本发明中，支撑层赋予包装容器和叠层材料以物理的机械的强度，维持支撑它们的形状、形态等。其热塑性最内层是容器的器壁的最内层，与液体食品直接接触，防止液体向容器的支撑层的浸透/湿润。此外，该最内层被热量熔融·软化而形成热封中的热封区域。
导电性层是由设在叠层在支撑层与热塑性最内层之间的蒸镀膜的基底膜上的金属导电材料组成的金属蒸镀层。
由于导电性层具有电气传导性，所以如果高频电流流入外部线圈，则在导电性层内产生高频感应引起的感应电流，靠其电阻产生的热量使邻接的最内层的塑料(热塑性材料/树脂)熔化。也就是说，在本发明中，在容器形成时，导电性层被高频感应加热所感应加热，发生的热量传到最内层，热塑性最内层被加热，熔融·软化。在其加热区域中，形成热封区域。
在本发明的优选实施方式中，导电性层是由设在叠层在支撑层与热塑性最内层之间的蒸镀膜的基底膜上的金属性导电材料组成的金属蒸镀层。
在本方式中，可以采用在聚乙烯或聚酯等基底膜的外侧面上，通过真空蒸镀金属，例如，金属铝、铝合金等所得到的蒸镀带。金属蒸镀的方法和蒸镀层的厚度等可以通过种种的方法来进行。例如，蒸镀方法可以用真空蒸镀法、溅射法、等离子体法等。

Claims (6)

1.一种叠层材料，是至少由支撑层和热塑性最内层组成的包装容器用带状叠层材料，其特征在于，
在为了该容器形成而通过高频感应加热被热封的区域上具有叠层在该支撑层与该热塑性最内层之间的导电性层，以便由该感应加热发生的热量传到该最内层；
该导电性层是由设在全面叠层在前述支撑层与前述热塑性最内层之间的蒸镀膜的基底膜上的金属性导电材料组成的金属蒸镀层。
2.权利要求1所述的叠层材料，其特征在于，前述导电性层是由设在全面叠层在前述支撑层与前述热塑性最内层之间的蒸镀膜的基底膜内表面上的金属性导电材料组成的金属蒸镀层。
3.权利要求1所述的叠层材料，其特征在于，前述导电性层是由设在全面叠层在前述支撑层与前述热塑性最内层之间的蒸镀膜的基底膜外表面上的金属性导电材料组成的金属蒸镀层。
4.一种叠层材料的制造方法，是至少由支撑层和热塑性最内层组成的包装容器用带状叠层材料的制造方法，其特征在于，
准备多个支撑层的原料卷；
从前述原料卷依次拉出带状支撑层，在包括为了该容器形成而通过高频感应加热被热封的区域的该支撑层内表面上，全面叠层由基底膜与设在该基底膜的内表面或外表面上的金属性导电材料的金属蒸镀层组成的蒸镀膜；
在该长带状支撑层的外表面上，间接或直接地印刷容器图案，同时或依次在印刷后的该带状支撑层的外表面和内表面上形成同种或异种、单个或多个热塑性层；
把上游侧的带状支撑层的前端与下游侧的带状支撑层的后端接合，形成更长的带状支撑层。
5.一种叠层材料的热封方法，其特征是，
准备带状叠层材料，所述带状叠层材料是至少由支撑层和热塑性最内层组成的包装容器用叠层材料，在为了该容器形成而通过高频感应加热被热封的区域具有叠层在该支撑层与该热塑性最内层之间的导电性层，以便由该感应加热发生的热量传到该最内层，该导电性层是由设在全面叠层在前述支撑层与前述热塑性最内层之间的蒸镀膜的基底膜上的金属性导电材料组成的金属蒸镀层；
把该带状叠层材料形成为管状，并在长度方向上进行纵封；
在该叠层材料管内填充液体食品；
在填充后的该管的横断方向上，每隔规定间隔通过高频感应加热形成热封区域进行横封；
切断前述热封区域的中央而形成一个个的容器。
6.一种包装容器，由至少由支撑层和热塑性最内层组成的叠层材料形成，其特征在于，
在为了该容器形成而通过高频感应加热被热封的区域处的，由设在全面叠层在前述支撑层与前述热塑性最内层之间的蒸镀膜的基底膜上的金属性导电材料组成的金属蒸镀的导电性层上，通过该感应加热发生的热量，最内层熔融或软化而与对置的软化或熔融的最内层形成热封区域。
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