CN101052514A - 生产包装层压材料坯料的方法及由此制造的坯料和包装容器 - Google Patents

生产包装层压材料坯料的方法及由此制造的坯料和包装容器 Download PDF

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Publication number
CN101052514A
CN101052514A CNA2005800376428A CN200580037642A CN101052514A CN 101052514 A CN101052514 A CN 101052514A CN A2005800376428 A CNA2005800376428 A CN A2005800376428A CN 200580037642 A CN200580037642 A CN 200580037642A CN 101052514 A CN101052514 A CN 101052514A
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band
blank
laminated material
described band
packing container
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CN100542794C (zh
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本特·安德松
汤姆·凯尔高
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Tetra Laval Holdings and Finance SA
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Tetra Laval Holdings and Finance SA
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    • B31B50/00—Making rigid or semi-rigid containers, e.g. boxes or cartons
    • B31B50/74—Auxiliary operations
    • B31B50/81—Forming or attaching accessories, e.g. opening devices, closures or tear strings
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Abstract

本发明涉及一种生产微波适用的包装容器的热密封折叠包装层压材料的坯料(50a、50b)的方法，包括以下步骤：(a)在包装层压材料的改装线上，推进基体层压材料(10)的连续片(1)，使得连续坯料被定向为其的由顶部到底部方向横穿于改装线的加工方向，且被定向为从顶部到顶部/底部交接面(51)，(b)设置带有折痕的基体层压材料(10)，并切割成包装层压材料的坯料(50a、50b)，对于步骤(a)，在顶部到顶部/底部交接面(51)上方的区域沿加工方向放置由导热导电材料组成的连续条带(2)；以及在放置条带(2)之前或之后设置开口标识(53)，以使开口标识位于条带的区域内。本发明还涉及由此生产的坯料，以及基于这种坯料形成的包装容器。

Description

生产包装层压材料坯料的方法及由此制造的坯料和包装容器
技术领域
本发明涉及一种生产用于微波适用(microwave-friendly)的包装容器的可热密封(thermosealable)和折叠的包装层压材料的坯料(blank)方法，包括以下步骤：
(a)在包装层压材料的改装线(conversion line)中持续地推进一片(web)基体(base)层压材料，从而使得用于包装容器的连续的坯料被定向为它们的由顶部到底部方向横穿于所述改装线的加工方向，以及具有从顶部到顶部/底部交接面。
(b)设置带有折痕的所述基础层压材料，并切割成所述包装层压材料的坯料。
本发明也涉及一种由此制造的坯料，还涉及一种包装容器，该包装容器从这样的坯料上分离，成形，以内容物填充，密封并优选地蒸馏(retort)或可选地热灌装(hot fill)。
背景技术
先前从，例如，公布号为WO97/02140国际专利申请，得知一种包装层压材料。该现有技术包装层压材料示出了一种刚性的、但可折叠的纸或纸板的芯层或大块(bulk)层以及在所述芯层两侧的外部、水分的不漏液(liquid tight)涂层以及抗热的热塑性材料。为了使现有技术包装层压材料也具有耐气体的密封性质，特别是氧气，所述包装层压材料进一步示出了一种气体屏障，例如，一种铝箔，位于芯层与外部涂层之间。
例如，从一种平折(flat-folded)管状的包装坯料，可蒸馏的包装容器这样生产：首先将所述包装坯料升高至一个开放的管状包装纸箱，该纸箱通过其持续可折叠的端面的成形和封装，在它的一端被密封，以形成充分平的底部密封。提供有所述底的所述包装纸箱通过它的开口端，以相关的内容物填充，例如，一种食物，该开口端随后由附加的包装纸箱的相对应的端面的折叠成形且密封以形成充分平的顶部密封。自然地，可以代之以首先形成所述包装纸板箱的顶部密封，在该情况下通过底部进行填充。所述被填充以及被密封的包装容器(通常为平行六面体)随后准备进行加热处理，以使所述包装食物延长在所述未打开的包装容器中的保存限期，例如至少6个月的保存限期，通常更长些，例如至少12或18个月。
通过该方法以及在公布号为WO98/16431的国际专利申请(其结合于此作为参考)中更详细地描述的条件下，期望延长其保存限期的所述包装食物的加热处理可以适宜地实现。所述包装容器被置于蒸馏器中并于此在第一循环气体介质(例如热蒸汽)的辅助下加热到通常位于70到130℃之间的范围内的温度。在选择的温度下保持一段预定时间后，停止供应所述第一气体介质。随后，所述包装容器通过第二循环气体介质(例如冷空气)冷却，并最后通过循环液体介质(例如冷水)冷却。随后从蒸馏器上移除冷却后的包装容器，以进一步地传送和处理。
此类的蒸馏的一种变形是特别地用于酸性产品的所谓热灌装。在此类例子中，产品的无菌填充在至少80℃但低于100℃发生，而之后不需蒸馏。
因此，例如，汤、调味料以及其他即食菜可以被包装在此类包装容器中，在本技术领域中存在一个显然的需要，以使得当它仍然在所述打开的包装容器中时，所述内容物能够在微波炉里加热。自然地，要达到该目的，问题是铝的气体阻挡层堵塞微波辐射，因此带有该气体阻挡层的包装容器不能在微波炉里使用。被认可地，在该技术领域中已知可以使用其它气体阻挡层，如基于聚合物的层，其满足了屏障属性的一般要求。然而，这种基于聚合物的气体阻挡层的主要缺点是它们不允许通过感应进行热密封，其由铝的气体阻挡层或其它导电材料提供。感应热密封是一种经过检验的功能良好的方法，其给予非常紧密的密封。在该密封里获得的优越的粘着更有利于如撕开穿孔形式的开口标识的非常好的开启性，也就是说不需要剪刀。进一步地，如果这样的穿孔能在所完成的层压材料上用激光穿孔方法实现并且部分地穿过它的厚度，那么所述铝层几乎是一个必需物，在该情况下，激光穿孔光束被铝层阻挡，使得这层和位于该铝层内部的一层或几层不能被穿孔。
综上所述，期望仍然能够使用铝，而它与微波适用的包装材料的需要的作用相反。此外，从环境的观点出发，期望能够在包装材料里减少铝的使用。
已经知道，EP 0 378 880 B1提供了一种基于纸的带有铝条的包装层压材料，它的目的是通过在其中区域里的感应允许热密封。然而，该公布没有记载对于微波适用的层压材料来说铝的数量是否足够地微小或者所述层压材料能否给出允许蒸馏或热灌装的包装材料。也没有获得任何关于任何开放设置或在由此生产的所述包装层压材料或包装容器上的标识的披露。在层压材料上使用铝条的方法存在很多缺点。因为它是一种间歇的方法，在该方法中穿过层压材料片的宽度使用短条，该层压材料片具有对应于横向密封并随后在同一条线上制造的位置的均匀空间，在不断地形成管的层压材料的基础上的持续的成形-填充-密封的过程里，填充所需的内容物，通过内容物横向密封以及随后切割成垫形容器，该包装最后折叠成形为，例如，砖形。这是间歇方法的问题，在于其自身具有缺点，例如，设备、调节和操作。更进一步地，即使所述铝条按照规定在两侧由聚合物覆盖，但是条的边缘将向储存在包装容器里的所述产品露出所述铝，而且这对食物产品是不能接受的。
发明内容
因此，本发明的一个目的是排除上面所述的缺点，提供了一种用于包装容器的由通过介绍所描述的类型的包装层压材料生产坯料的方法，该包装容器可以在微波炉里与它的内容物一起加热，而且可以优选地连同它的填充物在蒸馏器里热处理或者进行热灌装。
本发明的又一目的是提供一种由包装层压材料生产此种坯料的方法，其由于是导热和导电的材料(诸如铝)，其可以以非常强的、紧密并且持久的方式横向密封。此外，所述包装层压材料的坯料在坯料将被顶部密封的区域里以例如穿孔的形式设置有开口标识，这个开口标识为由坯料形成的包装容器提供了较好的开启性能。
本发明的更进一步目的是提供这样一种包装层压材料的坯料以及一种由此生产的包装容器，该包装容器允许在微波炉里加热，而且也优选地蒸馏或热灌装，并且其呈现出非常强、持久和紧致的横向密封以及一种表现出更好开启性能的开口标识。
这些和其它的目的以及优点将根据本发明如在附属权利要求中披露的和定义的那样而获得。
因此，根据本发明，通过以下介绍中的描述，提出了一种方法，该方法由热密封和折叠包装层压材料生产一种用于微波适用包装容器的坯料，导热并导电材料的连续条带(strip)沿加工方向、在所述顶部到顶部/底部交接面之上的区域且在步骤(a)中放置，以及，在该条带的施用之前或之后，设置细长的开口标识，使得所述开口标识定位于所述条带的区域里。
术语“微波适用”用于表示所述包装容器，一旦它被打开，可在微波炉里连同它的内容物加热，而不产生由于阻隔(screening-off)或微波辐射的堵塞或者击穿(sparking)问题。
在推进的基体层压材料的片上可以持续设置所述条带的事实具有在加工方面的主要优点。坯料的定位使该优点变为可能，从而，该坯料在步骤(a)中彼此连续并平放着“横向地”穿过所述片，使得该坯料的所述顶在此处称作“顶部到顶部/底部的交接面”的地方接触另一坯料的顶部或底部。优选地，所述坯料被设置为它们在“顶部到顶部交接面”里顶部到顶部的接触。这也意味着所述条带可能有双倍的宽度，在该情况下，在步骤(b)中层压材料被切割成坯料的情况下，其被切割成期望的宽度。设置有由导热且导电材料组成的条带的所述坯料的顶部将随后(与填充和密封有关)通过感应的方式被密封，以形成强的，持久的和紧密的顶部横向(top-transverse)密封。
更进一步地，由于在坯料顶端的条带的区域里的细长的开口设置或标识，也使这个开口设置便于生产，并且由于该条带而获得了较好的特性，当为以后放在微波炉里而打开包装容器时，该条带一大部分，优选地主要部分以及在那附近的金属材料将从包装容器中移除。结果，微量的金属材料残存在包装容器里，使得在微波炉里的加热没有因被阻隔或微波辐射的堵塞而阻止，而剩余的足够多的金属材料会使得击穿不会发生。
根据本发明的一个方面，该条带由金属箔形成，优选为铝箔，优选地示出在6到20μm之间的厚度。适当地，至少在它的一侧或者优选地在两侧都用聚合物加强材料加强，该聚合物加强材料优选为聚丙烯(polypropylene)、聚酰胺或聚对苯二甲酸乙二醇酯(polyethylene terephthalate)，然而可合适地在金属箔和聚合物加强材料之间使用胶粘塑料(adhesive plastic)。例如，所述条带可以呈现在20mm到50mm之间的宽度，应用它，从而在步骤(b)中设置的顶部折片(fin crease)位于所述条带的区域之内，这将参照附图的描述更加细节地描述和解释。在这样的例子中可认识到，所述条带的宽度将依赖于由坯料形成的包装容器的尺寸。这样一个包装尺寸可以是诸如从100、125或200ml到1,000，1,500，或2,000ml中的任一个，即使它可能通常是用于不大于400ml的包装容器的微波加热。
应该理解，当在顶部到顶部交接面内将所述片切割成坯料时，所述条带的宽度将是上文披露的一半。另一方面，如果它是顶部到底部的交接面，所述条带可以设置为使得它的主要部分被定位在该坯料的顶端，该坯料的顶部面对交接面。
根据本发明的另一个方面，优选地使用激光穿孔技术或使用机械穿孔技术，将所述开口标识设置成穿孔。如果使用激光穿孔技术，在已经施用条带后实现该穿孔是特别适当的，在该情况下，所述条带作为激光束的抑制工具，使得所述穿孔仅向下部分地穿过层压材料。优选地，所述开口标识的设置需要在顶部到顶部交接面的任一侧优选地设置连续的开口标识，在该情况下，优选地，设置每一个开口标识，使其距离所述顶部到顶部交接面比其距离所述条带的一个纵向边缘更远，该纵向边缘位于所述顶部到顶部交接面的与该被讨论的开口标识相同的一侧。另一方面，如果它是一种顶部到底部的交接面方式，那么仅仅在顶部面朝向顶部到底部交接面的坯料的顶端内，以上述方式，设置所述开口标识。当将所述层压材料切割成坯料时，在所述条带的区域里，将在每一个坯料的顶端处保留开口标识。通过开口布置的定位，将确保与包装容器的开口相连接的足量的条带/金属材料被移除，从而避免了在微波加热中产生问题。
将所述条带施加到所述基体层压材料的可以有不同方法。在本发明的一个第一实施例中，这可以在诸如辊间的爪中将条带和基体层压材料相互压在一起的情况下，通过将所述聚合物加强材料(如果有的话)直接定位于基体层压材料上并加热而实现。所述加热可以，例如，通过感应加热、热空气、气体火焰、超声波等实现。
在本发明的第二实施例中，可以施用所述条带到基体层压材料上，在该情况下，在诸如辊间的爪中将条带和基体层压材料相互压在一起的情况下，将聚合物层压材料挤压成在所述条带和所述基体层压材料之间的第一伸长层。此种聚合物层压材料优选地包括一种聚烯烃，例如聚丙烯，并且，在一个优选的实施例中，可包括热融胶。在本文中，其目的在于该热融胶是“被挤压的”，即使其是被抽到喷嘴而不是通过螺杆(screw)供给到喷嘴的。
根据本发明的又一方面，所述条带贯穿它全部的表面并在它的下部的纵向边缘上(即，将在所述坯料上蔓延(run)一段距离的所述纵向边缘)覆盖有聚合物覆盖材料，例如聚丙烯、聚酰胺或最优选的热融胶。这样的聚合物覆盖材料作为在所属条带的区域密封所述顶部时的热密封层，由于覆盖所述条带的下部纵向边缘，所述金属箔将不能与由坯料形成的、且被填充的包装容器内的内容物(如食品)相接触。覆盖材料的施加也可以以不同的方式实现。根据第一实施例，在所述条带被应用于层压材料后，所述条带被覆盖，或者通过聚合物覆盖材料的第二伸长层与其连接，优选地使用所述覆盖材料从而使它也覆盖了所述条带的纵向边缘。在该情况下，聚合物层压材料可以在所述条带上方被挤压成第二伸长层，并被快速挤压到合适的位置，例如在辊的爪之间。根据第二实施例，至少在所述条带的一侧，提供上述聚合物加强材料，以使它越过所述条带的纵向边缘延伸，在所述基体层压材料上使用所述条带，以使该聚合物加强材料被定位在金属箔的相对基体层压材料的对侧，并使该聚合物加强材料覆盖所述条带的纵向边缘。
在顶部到顶部的交接面之上设置首先提及的条带的实施例中，例如，所述底的横向密封的密封区域可以通过在所述坯料的底端的第二区域里，沿加工方向应用由导热且导电材料组成的第二连续的条带而实现，该第二条带优选地比所述第一条带窄，例如，大约5-10mm(每个坯料)。该第二条带的其他方面可以是那些上文所述的适用于第一个描述的条带的顶密封的那些内容。然而，以完全不同的方法实现底部密封也是可能的，例如，通过超声波、脉冲加热、热空气等。
根据本发明，提供了一种带有由导热且导电的材料组成的条带的所述层压材料，该层压材料可以具有在宽泛的限制中变化的结构。然而，基础的概念可以说成是所述基体层压材料，从层压材料的所需外部朝向它的设置有条带的内部来看，包括液密密封层、优选地为纸或纸板的芯层或大块层、气体阻挡层以及不漏液涂层，以及可能存在的中部粘结层(tie layer)。本发明的一个优点是在层压材料内部的不漏液涂层可以制造得比其它的方案薄，因为它不需要适合于横向密封，而是仅适合于要求较少的纵向密封。
根据本发明的方法的最后一方面，在步骤(b)之后，所述包装层压材料的坯料是折叠形成为填充有食物、密封并蒸馏的包装容器。在该情况下，横向密封优选地通过感应加热实现。可适用地，无需蒸馏或由热灌装代替。
本发明还涉及一种用于微波适用的包装容器的热密封和折叠的包装层压材料的坯料，所述包装层压材料的坯料具有设置有细长开口标识的顶端，在包装层压材料一侧且临近所述顶部处设置由导热且导电材料组成的连续的条带，从而使它覆盖所述开口标识。
本发明进一步涉及一种微波适用的并且优选地可蒸馏或可热灌装的包装容器，该包装容器是由这样一种坯料折叠成形、填充和密封得到的。
附图说明
现将在下文中，参考一个优选的实施例和附图，更加详细地描述本发明。在附图中：
图1是从该片的横向观看，示意性地示出了根据本发明的包装层压材料的一片连续坯料的一部分，包括应用的条带；
图2示意性地示出了在没有条带的位置处沿着图1中的片的剖面线A-A截取的横截面；
图3示意性地示出了在有条带的位置处沿着图1中的片的剖面线B-B截取的横截面；
图4是导热和导电材料组成的条带的横截面，在它的两侧都有加强材料；
图5是并从上方观看，示出了根据本发明的一片包装层压材料的连续坯料，其包括应用的条带；
图6是从侧面观看，示意性地示出了应用所述条带到所述片上的一个优选的过程；
图7是从上方观察，示出了根据图6的该过程；以及
图8示意性地示出了由图6和7里图解的过程产生的所述材料的横截面。
具体实施方式
应该理解，本发明并不局限于在图中显示的这些特定优选的实施例，而且，在不脱离所附权利要求所限定的发明思想的情况下，对于本领域技术人员来说，许多变形和更改是显而易见的。
图1是从所述片横向观察，其示出了根据本发明的包装层压材料的连续坯料的片1的一部分，包括应用的压缩的条带2’。
图2示出带有通用标号10的基体层压材料，其具有芯层或大块层11以及在芯层11两侧的外部的不漏液和热密封涂层12及13。所述基体层压材料10进一步地显示了在芯层11与不漏液涂层12之间的气体屏障14，并进一步地，可在芯层11和气体阻挡层14之间设置附加的不漏液中间层15。
可在前述层之间需要的位置设置适当的粘合剂的粘结层(tielayer)16a，16b。在图2中，此类的粘结层16a在不漏液涂层12与气体阻挡层14之间被示出，而且还在气体阻挡层14与附加的不漏液中间层15之间显示了一层粘结层16b。
在芯层11另一侧的所述外部、不漏液涂层13可示出随后由透明层17保护的以适当的印刷油墨装饰的图片，该透明层17层应用在装饰图片上并且其由相配的漆或其他介质组成，以保护装饰图片不受外部作用。仅在应用所述条带2时应用所述装饰图片和保护漆也是可行的。
芯层11可包括任何适当刚性的、但却可折叠的任何材料，优选地包括传统包装特性的纸或纸板。
外部、不漏液涂层13可以是从基本上包括任意性质的聚乙烯(PE)、聚丙烯(PP)、聚酯(PET)、或它们的混合物的组中选择的塑料。所述外部、不漏液涂层13的厚度或数量可以改变，但是通常满足25到45g/m2之间的量级要求。
对应地，所述不漏液涂层12可以由从基本上包括任意性质的聚乙烯(PE)、聚丙烯(PP)、聚酯(PET)、或它们的共聚物的组中选择的塑料组成。所述塑料涂层12的厚度或数量可以改变，但是通常满足25到35g/m2之间的量级要求。
所述气体阻挡层14由不导热也不导电的材料形成，例如聚对苯二甲酸乙二醇酯(PET)，非晶聚对苯二甲酸乙二醇酯(APET)，环状链烯烃共聚物(COC)，聚酰胺(PA)，非晶聚酰胺(APA)，液态结晶聚合体(LCP)，乙烯-乙烯醇共聚物(EVOH)以及聚乙烯醇(PVOH)乙烷基乙烯醇(ethyl vinyl alcohol)。可能地，这些材料可以与SiOx或AlOx层结合。
用在基体层压材料10里的粘结层/多个粘结层16a、16b的合适的粘合剂或粘结料本身为本技术领域所公知，但是根据本发明的特别优选的粘结料是从日本三井(Mitsui)公司获得的商品名Admer(粘着塑料)的粘结料。
在图3中，所述基体层压材料11、12、13、14、15、16a、16b、17与图2中相同，但是在它的内部(见图1)设置了被封装的(encapsulated)条带2’。所述被封装的条带2’包括专门的条带2，该条带由导热和导电材料的箔片形成，优选地为金属箔片，更加优选地为一种铝箔。所述条带2借助于聚合物材料的层18粘附于不漏液涂层12。最外面，即，在所述条带外部，设置了聚合物热密封材料层19。
图4示出被封装的条带2’的一个例子的横截面图。此处，在基体层压材料上引入所述条带之前已经应用了所述层18和19作为在条带2上的加强层。在该示例性实施例中，层18和19都在所述条带2的纵向边缘20外部延长了一小段距离，从而保护它的纵向边缘不与将填充入由带有条带的坯料形成的包装容器内的食物产品接触。在所述条带2的纵向边缘20外部，所述层18和19相互密封。然而，只有层19在所述条带2的所述纵向边缘20的外部充分延长也是可能的。
图5是从上方观察，其示出了根据本发明的一片由包装层压材料组成的连续的坯料50a、50b，包括应用条带。为了说明性的目的，该图的下部示出折叠后的片的外观，而图的上部示出折叠前的片的外观。虚线51构成坯料50的顶部到顶部交接面，即，在顶部到顶部交接面内，坯料50a(该坯料50a沿着所述片1的加工方向彼此依次排列)的顶部直接与所述坯料50b(该坯料50b也沿着所述片1的加工方向彼此依次排列)的顶部相邻。从而，所述坯料50a和50b在平行队列(file)里被定向为它们的顶部到底部方向横穿于所述加工方向，该平行队列中，所述坯料在交接面51内顶部到顶部接触。适宜地，在所述片1里的队列的数量被平均分成两队，如果多于两个队列，坯料的底部也在第二交接面52内底到底接触。所述交接面51和52也构成切割线，在该切割线处将彼此切开连续的坯料。
根据本发明，所述顶部到顶部交接面51由连续的条带2覆盖，所述条带在顶部到顶部交接面51的任一侧延伸过连续的开口标识53，该开口标识优选地为穿孔。应该理解，可以在条带2应用于片1之前或之后设置所述开口标识53。所述条带2也延伸过在坯料50a、50b中的顶部折片(fin crease)54。所述条带也由在所述条带2的纵向边缘20之上延伸出的聚合物材料保护层19覆盖。
在该示例性实施例中，在所述坯料50a、50b的底端，沿加工方向设置导热和导电材料组成的第二连续条带55。该第二条带55比所述第一个提及的条带2窄。所述第二条带55也由在所述条55的纵向边缘57之上延伸出的聚合物材料保护层56覆盖。
所述条带2及55的区域将构成所述坯料50a、50b成形、填充和密封从而形成包装容器时的横向密封的密封区域。
图6是从侧面观察并示意性地示出将条带2使用到所述片1的优选过程。所述片1，包括基体层压材料10，被推进到在冷却辊60和按压辊61之间的爪。热融胶泵(hot melt glue pump)62将热融胶传送到第一热融胶喷嘴63和第二热融胶喷嘴64。从储料台(magazine stand)65传送所述条带2。所述第一热融胶喷嘴63在所述片1与所述片2之间使用热融胶的股(strand)，所述第二热融胶喷嘴64在所述条带2和它的横向边缘上方应用更宽的热融胶的股。在辊间的随后的爪里其整体被永久地联合起来。带有所应用的条带的片1与爪分离开并且被进一步推进到装置66以折叠并切割成单独的坯料。应该理解，附加的处理步骤可在辊的爪与用于折叠和切割的装置之间进行，例如开口标识和/或装饰图片印刷的设置以及保护漆的应用，除非这些附加步骤在另一个位置执行。然而，优选地，具有条带的所述片的材料在切割成坯料之前不需要卷起，因为，所述条带可以在卷轴上的对应位置处给出不需要增强(build-up)的材料。
图7是从上方观察，其示出根据图6的过程。这里，能够看到三个条2是如何穿过片1的宽度而应用的。
图8示意性地示出了从图6和图7的过程中产生并且包括基体层压材料10、条带2和封装条带2的聚合物材料18、19的片材料横截面图。
本发明并不局限于所描述的实施例，而是可以在不脱离所附权利要求的范围情况下可以有多种变化。特别地，应该认识到，所述基体层压材料的所述层结构可以在广泛的范围内变化，以上描述仅仅披露了构成可想得到的实施方式的例子。

Claims (23)

1.一种生产可热密封的折叠包装层压材料的坯料(50a、50b)的方法，所述热密封折叠包装层压材料用于微波适用的包装容器，所述方法包括以下步骤：
(a)在用于包装层压材料的改装线上，推进基体层压材料(10)的连续片(1)，使得用于所述包装容器的连续坯料被定向为它们的由顶部到底部的方向横穿于改装线的加工方向，且被定向为具有从顶部到顶部/底部的交接面(51)，
(b)设置带有折痕的所述基体层压材料(10)，并切割成包装层压材料的所述坯料(50a、50b)，
其特征在于，对于步骤(a)，在所述顶部到顶部/底部交接面(51)上方的区域沿加工方向放置由导热且导电材料组成的连续的条带(2)；以及在放置所述条带(2)之前或之后设置细长的开口标识(53)，从而使所述开口标识位于所述条带的区域内。
2.根据权利要求1所述的方法，其特征在于，所述条带(2)由金属箔形成，优选铝箔，并且优选地具有6到20μm之间的厚度，以及优选地至少在它的一侧通过聚合物加强材料(18、19)来加强。
3.根据权利要求1或2所述的方法，其特征在于，所述条带(2)具有20到50mm间的宽度，应用所述条带，从而使在步骤(b)中设置的顶端折叶(54)位于所述条带的区域内。
4.根据前述权利要求中任一项所述的方法，其特征在于，所述开口标识(53)设置为穿孔，优选地借助于激光穿孔技术或借助于机械穿孔技术。
5.根据前述权利要求中任一项所述的方法，其特征在于，设置所述开口标识(53)，使其距离所述顶部到顶部/底部交接面(51)比其距离所述条带(2)的纵向边缘(20)更远，所述纵向边缘(20)与正讨论的所述开口标识设置于所述顶部到顶部/底部交接面的同一侧。
6.根据权利要求2所述的方法，其特征在于，在所述基体层压材料(10)上应用所述条带，其中，所述条带和所述基体层压材料被互相压在一起的情况下，靠着所述基体层压材料直接定位并加热所述聚合物加强材料(18)。
7.根据权利要求1到5中任一项所述的方法，其特征在于，在所述基体层压材料(10)上应用所述条带(2)，其中，在所述条带和所述基体层压材料互相压在一起的情况下，将聚合物层压材料(18)挤压成在所述条带(2)与所述基体层压材料(10)之间的第一伸长层。
8.根据前述权利要求中任一项所述的方法，其特征在于，在应用所述条带(2)之后，用聚合物覆盖材料的第二伸长层(19)覆盖所述条带(2)，优选地应用所述覆盖材料，以使它也覆盖所述条带的纵向边缘(20)。
9.根据权利要求2所述的方法，其特征在于，至少在所述条带(2)的一侧的所述聚合物加强材料(19)越过所述条带的所述纵向边缘(20)延伸出去，在所述基体层压材料上应用所述条带，以使所述聚合物加强材料(19)设置于所述条带的与所述基体层压材料相对的一侧，以及使所述聚合物加强材料覆盖所述条带的纵向边缘(20)。
10.根据前述权利要求中任一项所述的方法，其特征在于，所述顶部到顶部/底部交接面(51)是顶部到顶部交接面，在所述坯料(50a、50b)底端的第二区域中，沿加工方向放置由导热和导电材料组成的第二连续条带(55)，所述第二条带优选地比所述第一条带(2)窄。
11.根据前述权利要求中任一项所述的方法，其特征在于，在步骤(b)之后，将包装层压材料的所述坯料(50a、50b)折叠成形为包装容器，所述包装容器填充有食物、可被密封和蒸馏。
12.根据权利要求1到10中任一项所述的方法，其特征在于，在步骤(b)之后，将包装层压材料的所述坯料(50a、50b)在至少80℃但低于100℃的温度下，折叠成形为热灌装食物的包装容器，并随后密封。
13.根据前述权利要求中任一项所述的方法，其特征在于，所述基体层压材料(10)以这样的结构形式来设置，从所述层压材料的指定外部向设置有条带的它的内部看，所述结构包括不漏液密封层(13)、优选地为纸或纸板材料制成的芯层(11)、气体阻挡层(14)和不漏液涂层(12)，还包括可能存在的中部粘结层(16a、16b)。
14.一种可热密封的折叠包装层压材料的坯料，其用于微波适用包装容器，包装层压材料的所述坯料具有设置有细长的开口标识(53)的顶端，其特征在于，导热和导电材料的连续条带(2)设置在所述包装层压材料的一侧且邻近所述顶端，从而使所述条带覆盖所述开口标识。
15.根据权利要求14所述的坯料，其特征在于，所述条带(2)由金属箔形成，优选地为铝箔，优选地，所述金属箔的厚度在6μm到20μm之间，其宽度在10mm到25mm之间。
16.根据权利要求14或15所述的坯料，其特征在于，所述条带(2)也在所述顶端附近覆盖顶部折片(54)。
17.根据权利要求14到16中任一项所述的坯料，其特征在于，所述开口标识(53)包括穿孔，优选地，所述穿孔贯穿所述坯料(50a、50b)的整个宽度而延伸。
18.根据权利要求14到17中任一项所述的坯料，其特征在于，所述开口标识(53)被设置为其距离所述顶端比其距离所述条带(2)的下部纵向边缘(20)更远。
19.根据权利要求14到18中任一项所述的坯料，其特征在于，聚合物材料的第一伸长层(18)位于所述条带(2)与所述包装层压材料的剩余部分(10)之间，优选地，所述第一伸长层与所述条带一样宽并将所述条带与所述包装层压材料彼此连接。
20.根据权利要求14到19中任一项所述的坯料，其特征在于，设置有聚合物材料的第二伸长层(19)，以覆盖所述条带(2)，并且优选地，越过所述条带的下部纵向边缘(20)伸出一小段距离。
21.根据权利要求14到20中任一项所述的坯料，其特征在于，导热且导电的材料组成的第二连续条带(55)位于所述坯料(50a、50b)的底端，所述第二条带(55)优选地比所述第一条带(2)窄。
22.根据权利要求14到21中任一项所述的坯料，其特征在于，所述包装层压材料示出这样一种结构，从所述层压材料的指定外部向设置有所述条带的它的内部看，所述结构包括不漏液密封层(13)、优选地由纸或纸板组成的芯层(11)、气体阻挡层(14)以及不漏液涂层(12)，还包括有可能存在的中部粘结层(16a、16b)。
23.一种微波适用并且优选地可蒸馏或可热灌装的包装容器，其特征在于，它是由根据权利要求14到22中任一项所述的坯料(50a、50b)折叠成形、填充并密封的。
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