CN102144011B - 特别用于可重复使用容器的标签 - Google Patents

特别用于可重复使用容器的标签 Download PDF

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Publication number
CN102144011B
CN102144011B CN200980134300.6A CN200980134300A CN102144011B CN 102144011 B CN102144011 B CN 102144011B CN 200980134300 A CN200980134300 A CN 200980134300A CN 102144011 B CN102144011 B CN 102144011B
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maximum
label
polymer film
film layer
shrink
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CN102144011A (zh
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S·施奈德
H·约尔克
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Steinbeis IBL GmbH
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Steinbeis IBL GmbH
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Abstract

提出了一种标签(1)，所述标签适用于粘着到尤其是饮料瓶的物品(5)，并且适用于在至少50℃的洗涤温度下在洗涤液中剥离，所述标签为叠层形式，包括下述层：在洗涤温度下收缩的双轴向拉伸聚合物薄膜层(9)、印刷装饰层(11)、以及尤其是压敏粘着层的粘着层(13)，用于将所述标签(1)粘着到所述物品(5)。所述双轴向拉伸聚合物薄膜层(9)设计成使得叠层在所述洗涤温度下，在尤其小于3分钟的小于5分钟的最大时间段内获得彼此差异小于50％并且小于50％的在两个拉伸方向上的最大收缩度。因此，当标签(1)和物品(5)之间的粘着力高时，可从物品(5)中洗掉标签(1)而不撕裂标签。

Description

特别用于可重复使用容器的标签
技术领域
本发明涉及一种适用于粘着到尤其是饮料瓶的物品的标签，该标签适用于在至少50℃的洗涤温度下的洗涤液中剥离。
背景技术
特别是在饮料工业中，例如瓶子的容器被不止一次地使用。每次再回收时，在再充灌之前都要清洗这些可重复使用容器，在容器再充灌和再贴上标签之前甚至要洗掉粘着到容器的标签。
适用于可贴于尤其是饮料瓶的可重复使用容器的标签从EP0951004B1中已知。标签为叠层形式，该叠层包括：在洗涤温度下收缩的双轴向拉伸聚合物薄膜层、印刷装饰层和用于将标签粘着到容器的压敏粘着层。在热洗涤液中，聚合物薄膜层收缩，即缩紧，以克服粘着到容器的粘着层的保持力，从而使标签脱离容器。粘合剂是可再分散的粘合剂，其与洗涤液接触就会中和(即失去粘着力)，从而防止标签再附着于容器。
在EP0951004B1已知种类的标签中，拉伸聚合物薄膜层仅在达到一定的初始温度才开始收缩。随着温度的增加，由于拉伸操作，储存在拉伸聚合物薄膜中的能量被部分或全部释放。由于标签通过压敏粘合剂的粘着力固定在容器上，因而有必要保证在暴露于热洗涤液的聚合物薄膜中产生的收缩力大于将标签保留在容器上的粘着层的粘着力。
实践中已经表明，由于不同的侵蚀或腐蚀条件，可重复使用容器具有变化的表面特性，在某些情况下，尤其是在可重复使用容器被镀膜以遮蔽现存磨损或减小未来磨损的情况下变化很大。另一个因素是：标签旨在在例如2℃和55℃之间的温度和不同的湿度水平(例如10％和100％的相对湿度之间)的不同储存条件下，或在预贴有标签的瓶子或回收过程中的瓶子，甚至在结霜或强烈太阳辐射的条件下牢固地粘着到变化表面。为了实现该目的，压敏粘合剂必须获得相对较高水平的粘着力。然而，希望能在工业条件下尽可能不通过机械剥离的辅助(如刷洗)而可靠地使标签剥离。
发明内容
本发明的目的是提供一种标签，该标签能粘着到尤其是饮料瓶的物品，而且，即使有必要解决标有标签的物品的表面处标签粘着力的较大变动的问题，该标签也能在从约50℃和约95℃的范围中选择的洗涤温度下、在洗涤液中可靠地剥离，以便防止标签从物品中不期望地剥离。
为了实现该目的，本发明是基于一种标签，该标签适用于粘着到尤其是饮料瓶的物品，并且适用于在从约50℃至约95℃的温度范围中选择的规定洗涤温度下、在洗涤液中剥离。标签为叠层形式，该叠层具有至少以下层：
-在洗涤温度下收缩(缩紧)的双轴向拉伸聚合物薄膜层，
-印刷装饰层，以及
-粘着层，尤其是用于将标签粘着到物品的压敏粘着层。
上述目的的实现方式为，聚合物薄膜层设计成使得叠层在规定洗涤温度下以及在尤其小于3分钟的小于5分钟的最大时间段内以及在允许聚合物薄膜层在其两个拉伸方向自由收缩的情况下获得彼此差异小于50％的最大收缩度；以及拉伸聚合物膜层被进一步以这样的方式设计成使得叠层在聚合物薄膜层的两个拉伸方向、在规定的洗涤温度下以及在最大时间段内获得至少0.6N/mm2的收缩张力和至少0.5％的收缩度。
本发明是基于以下结论：重要的是不仅将拉伸聚合物薄膜层的收缩力增加至足够克服粘着层的粘着力的水平，还要遵从聚合物薄膜层以及叠层在热洗涤液中收缩，即缩紧的时间进程。
重要的是，如果允许自由收缩，则叠层中的聚合物薄膜层以大致均匀的方式在其两个拉伸方向缩紧，即，收缩度的差异小于50％(基于更高的收缩度)。在由工业洗涤去除技术所规定的尤其小于3分钟的小于5分钟的最大时间段内，两个拉伸方向的收缩度有利地保持小于65％，尤其是小于50％(基于拉伸初始状态)。可以理解，分别在此处和下面提到的收缩度和收缩张力的值是在规定的最大洗涤去除时间段内获得的值，如果洗涤去除时间段延长，也可超过这些值。在此处和下面讨论的收缩度的值总是那些在叠层自由收缩，即在叠层不粘着到物品的状态下的值。
传统收缩标签在机器方向(即在用于标签制作的拉伸薄膜的长度方向)的收缩可忽略，并在短时间(即在例如3分钟的预定最大时间段的一段内)产生较大收缩度。例如，在聚合物薄膜的横断方向产生70％的收缩度，这在叠层中允许较高的张力。这能导致标签的层结构中的撕裂。就本发明的标签而言，在两个拉伸方向的收缩度的差异被限制为小于50％。在两个拉伸方向的收缩度的大小也被限制为小于65％，特列是小于50％。因此，这保证了标签的叠层中的应力不会突然产生，而是在5或3分钟的洗涤去除时间段上逐渐产生和分布。该洗涤去除时间段有利地为至少2分钟。这样就避免了在叠层，例如装饰层的油墨层中的应力撕裂，该撕裂导致标签被剥离之后油墨和压敏粘合剂在物品上的残留。
在两个拉伸方向均匀地产生收缩力(收缩张力)是导致以下现象的因素之一：尽管与传统标签相比减小了收缩度，标签也能在例如3分钟的工业洗涤装置的洗涤去除时间段内、在两个拉伸方向剥离而不撕裂标签组件。由于在聚合物薄膜层的两个拉伸方向的收缩度彼此至少大致上一致，因而与基本上单轴向拉伸聚合物薄膜层相比，装饰层的油墨材料在收缩时被压缩得较轻，这提高了油墨材料的粘着力并防止撕裂。
已经表明，如果同时获得至少0.6N/mm2的收缩张力，则0.5％的聚合物薄膜层的收缩度的最小阈值已足够在热洗涤液中使标签从容器剥离。然而，讨论中的这些值是阈值，在洗涤去除操作中可以超过这些阈值。然而，对标签的非撕裂性剥离而言，聚合物薄膜层以可控方式渐进收缩也是关键。已经表明，有利地，如果拉伸聚合物薄膜层被设计成在聚合物薄膜层的两个拉伸方向且在最大时间段内，则叠层：
a)在60℃的洗涤温度下获得不超过最大3.5N/mm2的收缩张力，以及最大20％、尤其是最大13％的收缩度，
和/或
b)在70℃的洗涤温度下获得不超过最大15N/mm2、尤其是12N/mm2的收缩张力，以及最大55％、尤其是最大36％的收缩度，
和/或
c)在80℃的洗涤温度下获得不超过最大18N/mm2的收缩张力，以及最大60％、尤其是最大46％的收缩度，
和/或
d)在90℃的洗涤温度下获得不超过最大20N/mm2的收缩张力，以及最大65％(尤其是最大50％)的收缩度，
所述的收缩张力和收缩度的最大值定义为适用于本发明文本中的聚合物薄膜的极限曲线的洗涤温度下的函数。
对于物品的非常宽泛的不同表面性质的广泛应用而言，拉伸聚合物薄膜层优选地设计成使得叠层在其两个拉伸方向在至少70℃的洗涤温度下以及在最大时间段内获得至少4％的收缩度和至少1.5N/mm2的收缩张力。已经证明，如果叠层在拉伸聚合物薄膜层的两个拉伸方向以及在至少80℃的洗涤温度下、在最大时间段内获得至少2％的收缩度和至少0.8N/mm2的收缩张力，则在本文中尤为有利。在本文中，有可能利用这一事实，即在80℃下的粘合剂的粘着力将小于在70℃下的粘合剂的粘着力。
聚合物薄膜层应在两个拉伸方向具有在两个拉伸方向都尽可能均匀增长的收缩度，并且应在洗涤温度下获得相对较高的收缩张力。已经证明，基于聚对苯二甲酸乙二醇酯(PET)的塑料材料制成的拉伸聚合物薄膜层尤其适用于该目的。其它聚合物也适合，例如，聚氯乙烯(PVC)、聚苯乙烯(PS)、聚丙烯(PP)、聚乙烯(PE)、聚乳酸(PLA)或环烯共聚物(COC)。
为了允许以特定精确度印刷装饰层并随后将标签精确地且高速地分配到容器上，拉伸聚合物薄膜层应由相对较硬的材料构成。有利地，聚合物薄膜层尤其在薄膜片的机器方向上具有至少2500MPa的弹性模量，该弹性模量尤其使用PET薄膜可以获得。
可以使用传统方式制造标签的层结构，例如，通过使拉伸聚合物薄膜层成为薄膜复合层的一层组成组分，并且与至少另一聚合物薄膜层结合以形成薄膜复合层，以便最优化剥离时标签中的收缩力。为此目的，该另一聚合物薄膜层可以是遇热收缩的不拉伸或单轴向拉伸聚合物薄膜层，但是在本文中，另一聚合物薄膜层优选为被双轴向拉伸。在薄膜复合层中，聚合物薄膜层可以以叠层的方式结合，例如，通过叠层粘合剂等；替代地，它们可以被共同挤出。
在一个可以与除上述标签以外的标签一起使用的优选实施例中，如果粘着层尤其由压敏粘着材料构成，则能增加洗涤去除过程中防止标签撕裂的安全性，其中压敏粘着材料通过交联聚合物形成，通过用作增粘剂并且由交联的叠层粘合剂组成的中间层结合到叠层。在本文中，叠层粘合剂和粘着层交联，这增加了防撕裂性能。中间层优选包括作为其基底材料的双组分的聚氨酯粘合剂。粘着层有利地包括可通过辐射(例如电子束，尤其是紫外光)激发而交联的粘合剂，尤其是压敏粘合剂作为其基底材料。
聚合物薄膜层有利地由透明塑料材料构成，印刷装饰层设置在聚合物薄膜层和粘着层之间的叠层中，有利地该粘着层设计成压敏层，以保护装饰层免于机械破坏。替代地，装饰层和粘着层或压敏粘着层可设置在拉伸聚合物薄膜层的相对侧上，在这种情况下，装饰层有利地设置在拉伸聚合物薄膜层和保护层之间，该保护层将标签向外切断。保护层可以是聚合物薄膜层，尤其可以是遇热能单轴向或双轴向缩紧的聚合物薄膜层。替代地，保护层可以是漆层，尤其是包括交联材料，且优选为包括双组分材料。
在第二方面，本发明涉及将本发明的标签粘着到其上的容器。在第三方面，本发明也涉及将本发明的标签粘着到一物品(尤其是饮料瓶)的方法。
以下参考图详细说明本发明示例性的实施例。
附图说明
图1示出在洗涤液中开始剥离时的容器，根据本发明的标签粘着到该容器的外表面；
图2示出沿图1中的线II-II穿过容器和标签的截面图；
图3示出在开始剥离时穿过图1的标签的一个变型的截面图；
图4示出在开始剥离时穿过图1的标签的另一变型的截面图。
具体实施方式
图1和图2示出了一种标签，通常由1表示，该标签粘着到诸如多用途饮料瓶的容器5的基本上圆柱形的外表面3，标签1在热洗涤液(未示出)中几乎同时从所有四个边缘7开始剥离。在标签1剥离之前，标签向上粘着在边缘7，粘着在容器5的表面3上。
标签1设计成使得叠层，并且具有双轴向拉伸的聚合物薄膜层9，该薄膜层在例如约80℃的洗涤液的洗涤温度下、在两个拉伸方向收缩，即缩紧。层9由透明塑料材料构成，并且在其面向容器5的一侧具有印刷装饰层11，可以从外面通过聚合物薄膜层9看见该装饰层。装饰层11涂覆有由压敏性粘着材料构成的粘着层13，该粘着层将标签1和容器5粘结。
聚合物薄膜层9优选由聚对苯二甲酸乙二醇酯(PET)塑料材料构成，该聚对苯二甲酸乙二醇酯(PET)塑料材料是双轴向拉伸，并且当在洗涤液中加热聚合物薄膜材料而允许叠层自由收缩时，该PET塑料材料在两个拉伸方向的最大收缩度的差小于50％(基于更高的收缩度)。在两个拉伸方向的每一个方向中的收缩度都小于65％，尤其是小于50％(基于初始拉伸状态)。聚合物薄膜层9被构造为使得在大约5分钟，优选为约3分钟的洗涤时间内达到前述值，这是工业洗涤设备中可重复使用容器遵循的惯例。
由于在整个洗涤时间段上收缩张力的增长被分配在聚合物薄膜层9的两个拉伸方向上，并且由于在两个拉伸方向大约均匀产生的收缩受到限制，因此防止了收缩过程产生可能导致将剥离标签撕裂为剥离部分和保留在容器上的余留部分的应力。因为剥离过程在两个拉伸方向都以可控的方式进行，因而即使粘着层13被设计成具有相对较高的粘着力，也能使标签剥离而不被撕裂，这是为了防止标签1从具有不同的表面性质的瓶子上不期望地剥离。
聚合物薄膜层9的收缩参数设定为使得叠层在聚合物薄膜层9的两个拉伸方向、在洗涤时间段中以及在至少50℃的洗涤温度下获得具有至少0.5％的收缩度的至少0.6N/mm2的收缩张力。已经发现，如果满足这些参数，则能在聚合物薄膜材料的双轴向拉伸的基础上洗掉标签。
可以理解，在实践应用中，为了增加剥离的可靠性，选择的收缩张力和收缩度的值也可以更高一些。此外，在很多情况下，洗涤温度下可选择为高于50℃。然而，为了能够使标签在不撕裂的情况下剥离，不应超过收缩张力和收缩度的最大值。已经表明，如果聚合物薄膜层9设计成使得叠层在聚合物薄膜层的两个拉伸方向、在规定(例如3分钟)的洗涤去除时间段内、在60℃的洗涤温度下获得不超过最大值为3.5N/mm2的收缩张力，以及不超过最大值为20％，尤其最大值为13％的收缩度是适合的。在70℃的洗涤温度下，收缩张力应小于15N/mm2的最大值，尤其小于12N/mm2的最大值，而收缩度应该最大为55％，尤其最大为36％。在80℃的洗涤温度下，收缩张力不应该超过18N/mm2的最大值，并且收缩度不应该超过60％的最大值，尤其是46％的最大值。在90℃的洗涤温度的情况下，收缩张力不应该超过20N/mm2的最大值，收缩度不应该超过最大65％的最大值，尤其是50％的最大值。
为提高作为洗涤温度的函数的剥离的可靠性，收缩张力还应该有特定最小阈值。例如，在70℃的洗涤温度下，聚合物薄膜层9在3分钟的洗涤时间段中、对于至少1.5N/mm2的收缩张力，在其两个拉伸方向应该达到至少4％的收缩度。在80℃的洗涤温度下，在3分钟的洗涤时间段中，在两个拉伸方向所获得的收缩度应该至少是2％，在相同条件下所获得的收缩张力应该是至少0.8N/mm2。
取决于洗涤温度，与通过洗涤去除的传统标签的聚合物薄膜层的收缩度相比，聚合物薄膜层9的收缩度较少依赖于方向，且明显地小，如下面对于PET薄膜的表1中所示。
表1：
Figure BDA0000048634490000081
通过在相应的温度下将薄膜浸泡在水中3分钟，确定薄膜的自由收缩。
纵向收缩度是薄膜制造机器的纵向薄膜织网方向的收缩度。横向收缩度表示与纵向机器方向横向的收缩度。
表2示出根据本发明使用的、大约50μm厚的PET薄膜的最大收缩张力(与现有技术的PET薄膜相比较)。根据本发明的PET薄膜在两个拉伸方向产生的最大收缩张力大于传统薄膜的最大收缩张力。表2示出最大的收缩张力的比较。根据DIN 53369测定收缩张力。温度在测量腔室中从30到105℃以20°K/h，而不是50或120°K/h的DIN变化速度线性变化。在20°K/h的变化速度下，停留时间在一个代表洗涤温度的温度下为大约3分钟。
表2：
Figure BDA0000048634490000091
上述表1中的测量显示本发明的本文中使用的聚合物薄膜层的收缩开始温度高于传统的、拉伸的、可收缩的聚合物薄膜层，在该情况下，收缩开始温度与传统薄膜相比为约65℃，其中，传统薄膜在仅55至60℃时开始收缩。
在图1和图2中所示的标签1中，从外面看，印刷装饰层11被保护在聚合物薄膜层9的下面，该聚合物薄膜层在合适的时候也可用作标签的产品载体。粘着层13可直接涂覆至油墨层11。然而，优选地，在装饰层11和粘着层13之间设置作为增粘剂的中间层15。中间层15可以是传统的基底层。优选地，中间层15可以是双组分的聚氨酯叠层粘合剂的反应层，该反应层不仅能和装饰层11交联，也能和粘着层13交联。优选地，粘着层13同样由交联聚合物，尤其是由能够通过辐射激发的交联系统，例如UV激发粘合材料构成。中间层15提高标签1的抗撕裂性能。
在以下内容中，示出图1和图2的标签的变型。具有相同效果的部件标以图1和图2中的参考数字，并且用字母来区别它们。为清除地说明构造、工作方式和变型，参考图1和图2的说明。
图3示出开始剥离时粘着到容器5a的外表面3a的标签1a。与图1和图2的标签1相比，装饰层11a通过基底层17印刷在双轴向拉伸薄膜层9a上。在本示例中，装饰层11a也设置在粘着层13a和聚合物薄膜层9a之间。双轴向拉伸聚合物薄膜层9a是叠层复合层19的组成组分，在该叠层复合层中，双轴向拉伸聚合物薄膜层9a通过例如叠层粘合剂的粘着层21和另一聚合物薄膜层23二维结合。总的叠层复合层19是透明的，因而从外面仍可看见装饰层11a。如果聚合物薄膜层23是单轴向拉伸薄膜，或者也是双轴拉伸薄膜(由于被优选为减小材料组件中的应力)，可以通过层9a和层23的叠层来增加标签1a的收缩力。可以理解，聚合物薄膜层23也可以设计成不收缩。在该情形下，标签1a的收缩力将被减小。如果将收缩方式不同的层9a和23进行叠层，可能会影响标签收缩时剥离运动的方向，这可能会改进剥离性能。
上面所说明的标签中，叠层中的装饰层位于双轴向拉伸聚合物薄膜层和粘着层之间。在图4的标签1b中，粘着层13b在适当时候通过增粘剂层直接附着于双轴向拉伸聚合物薄膜层9b，而装饰层11b印刷在聚合物薄膜层9b的相对侧上，在该相对侧，聚合物薄膜层也用作标签产品载体。保护层27通过诸如叠层粘着层的增粘剂层25附着于装饰层11b。保护层27可以是一层保护漆，或者是另一层拉伸或不拉伸聚合物薄膜层。在本文中，聚合物薄膜层也可以是双轴向或单轴向拉伸。当保护层27被构造为一层保护漆时，没有必要设置增粘剂层25(例如保护层27和装饰层11b之间的一层叠层粘合剂)。可选择地，在聚合物薄膜层9b上使用基底形式的增粘剂层。在该情况下，装饰层11b和增粘剂层25在图4中彼此交换位置。
如果使用聚合物薄膜作为保护层27，则也可以将装饰层11b涂覆在该聚合物薄膜上，并且可以通过增粘剂层25(尤其是一层叠层粘合剂)被固定至该聚合物薄膜层9b。

Claims (20)

1.一种标签（1），所述标签适用于粘着到物品（5），并且适用于在从50℃至95℃的温度范围中选择的规定洗涤温度下、在洗涤液中剥离，所述标签为叠层形式，所述叠层包括至少以下层：
聚合物薄膜层（9），所述聚合物薄膜层在两个拉伸方向上被双轴向拉伸，并且适用于在所述规定洗涤温度下在所述两个拉伸方向上再收缩，
印刷装饰层（11），以及
粘着层（13），用于将所述标签粘着到所述物品（5），
其特征在于，
所述聚合物薄膜层（9）设计成使得所述叠层在所述规定洗涤温度下并且在小于5分钟的最大时间段内，以及在允许所述聚合物薄膜层（9）在所述两个拉伸方向上自由收缩的情况下，在所述两个拉伸方向上获得相等的最大收缩度，或者在所述两个拉伸方向上获得彼此不同的最大收缩度，其中较小的那个最大收缩度与较大的最大收缩度的差值小于所述较大的最大收缩度的50%，以及
所述聚合物薄膜层（9）被设计成使得所述叠层在所述聚合物薄膜层（9）的两个拉伸方向、在所述规定洗涤温度下以及在所述最大时间段内获得至少0.6N/mm2的收缩张力和至少0.5%的收缩度。
2.如权利要求1所述的标签，其特征在于，
所述聚合物薄膜层（9）设计成使得所述叠层在所述规定洗涤温度下、并且在所述最大时间段内以及在自由收缩的情况下、在所述聚合物薄膜层的两个拉伸方向获得小于65%的最大收缩度。
3.如权利要求2所述的标签，其特征在于，
所述聚合物薄膜层（9）设计成在所述两个拉伸方向上获得小于50%的最大收缩度。
4.如权利要求1所述的标签，其特征在于，所述最大时间段小于3分钟。
5.如权利要求1所述的标签，其特征在于，
所述聚合物薄膜层（9）设计成使得在所述聚合物薄膜层（9）的两个拉伸方向以及在所述最大时间段内，所述叠层
a）在至少70℃的洗涤温度下获得至少1.5N/mm2的收缩张力和至少4%的收缩度，
和/或
b）在至少80℃的洗涤温度下获得至少0.8N/mm2的收缩张力和至少2%的收缩度。
6.如权利要求1－5中任一项所述的标签，其特征在于，
所述聚合物薄膜层（9）设计成使得在所述聚合物薄膜层（9）的两个拉伸方向并且在所述最大时间段内，所述叠层
a）在60℃的洗涤温度下获得不超过最大3.5N/mm2的收缩张力和最大20%的收缩度，
和/或
b）在70℃的洗涤温度下获得不超过最大15N/mm2的收缩张力和最大55%的收缩度，
和/或
c）在80℃的洗涤温度下获得不超过最大18N/mm2的收缩张力和最大60%的收缩度，
和/或
d）在90℃的洗涤温度下获得不超过最大20N/mm2的收缩张力和最大65%的收缩度。
7.如权利要求6所述的标签，其特征在于，
所述聚合物薄膜层（9）设计成使得在所述聚合物薄膜层（9）的两个拉伸方向以及在所述最大时间段内，所述叠层
a）在60℃的洗涤温度下获得不超过最大3.5N/mm2的收缩张力和最大13%的收缩度，
和/或
b）在70℃的洗涤温度下获得不超过最大12N/mm2的收缩张力和最大36%的收缩度，
和/或
c）在80℃的洗涤温度下获得不超过最大18N/mm2的收缩张力和最大46%的收缩度，
和/或
d）在90℃的洗涤温度下获得不超过最大20N/mm2的收缩张力和最大50%的收缩度。
8.如权利要求1－5中任一项所述的标签，其特征在于，
所述聚合物薄膜层（9）由基于聚对苯二甲酸乙二醇酯（PET）或聚酯或聚氯乙烯（PVC）或聚苯乙烯（PS）或聚丙烯（PP）或聚乙烯（PE）或聚乳酸（PLA）或环烯共聚物（COC）的塑料材料构成。
9.如权利要求8所述的标签，其特征在于，所述聚合物薄膜层（9）具有至少2500MPa的弹性模量。
10.如权利要求1－5中任一项所述的标签，其特征在于，
所述聚合物薄膜层（9）是薄膜复合层（19）的一层组成组分，所述薄膜复合层是叠层复合层或共同挤出复合层的形式，其中，所述薄膜复合层（19）包括至少另一聚合物薄膜层（23），所述至少另一聚合物薄膜层是遇热收缩的单轴向拉伸或双轴向拉伸聚合物薄膜层的形式。
11.如权利要求1－5中任一项所述的标签，其特征在于，
所述粘着层（13）由交联聚合物构成，并且所述粘着层通过交联叠层粘合剂构成的中间层（15）和所述叠层中除了所述粘着层（13）以外的一层结合。
12.如权利要求11所述的标签，其特征在于，
所述中间层（15）包括作为其基底材料的双组分聚氨酯粘合剂。
13.如权利要求11所述的标签，其特征在于，
所述粘着层（13）包括作为其基底材料的粘合剂，所述粘合剂适用于通过辐射激发而交联。
14.如权利要求1－5中任一项所述的标签，其特征在于，
所述聚合物薄膜层（9）由透明塑料材料构成，并且所述印刷装饰层（11）设置在所述聚合物薄膜层（9）和所述粘着层（13）之间。
15.如权利要求1－5中任一项所述的标签，其特征在于，
装饰层（11b）和粘着层（13b）设置在聚合物薄膜层（9b）的相对侧上，并且装饰层（11b）设置在聚合物薄膜层（9b）和一保护层（27）之间。
16.如权利要求15所述的标签，其特征在于，
保护层（27）设计成保护漆层或聚合物薄膜层。
17.如权利要求16所述的标签，其特征在于，保护层（27）是适于遇热收缩的单轴向拉伸或者双轴向拉伸聚合物薄膜层。
18.一种饮料瓶形式的容器，其特征在于，如权利要求1－17中任一项所述的标签（1）被粘着到所述容器。
19.一种将标签（1）粘着到物品（5）以及将所述标签（1）从所述物品（5）中剥离的方法，其中，所述标签（1）适用于粘着到所述物品（5），并且所述标签为叠层形式，所述叠层包括至少以下层：
聚合物薄膜层（9），所述聚合物薄膜层在两个拉伸方向上被双轴向拉伸，并且适于遇热在所述两个拉伸方向上再收缩，
印刷装饰层（11），以及
用于粘着到所述物品（5）的粘着层（13），
其中，所述标签（1）通过其粘着层（13）粘着到所述物品（5），并且为了剥离所述标签，所述标签使用具有从50℃和95℃的范围中选择的规定洗涤温度下的洗涤液进行处理，以使所述聚合物薄膜层（9）再收缩，从而克服所述粘着层（13）的粘着力，
其特征在于，
所述聚合物薄膜层（9）设计成使得所述叠层在所述规定洗涤温度下，在小于5分钟的最大时间段内以及在允许所述聚合物薄膜层（9）在所述两个拉伸方向自由收缩的情况下获得小于65％的最大收缩度，以及
在所述两个拉伸方向中的第一个方向上获得的最大收缩度小于在所述两个拉伸方向中的第二个方向上获得的最大收缩度，并且其差值小于在所述两个拉伸方向中的第二个方向上获得的最大收缩度的50%,以及
所述聚合物薄膜层（9）被设计成使得所述叠层在两个拉伸方向、在所述规定洗涤温度下以及在所述最大时间段内获得至少0.6N/mm2的收缩张力和至少0.5%的收缩度。
20.如权利要求19所述的方法，其特征在于，
所述聚合物薄膜层（9）设计成使得在所述聚合物薄膜层（9）的两个拉伸方向并且在所述最大时间段内，所述叠层
a）在60℃的洗涤温度下获得不超过最大3.5N/mm2的收缩张力，以及不超过最大20%收缩度，
和/或
b）在70℃的洗涤温度下获得不超过最大15N/mm2的收缩张力，以及不超过最大55%的收缩度，
和/或
c）在80℃的洗涤温度下获得不超过最大18N/mm2的收缩张力，以及不超过最大60%的收缩度，
和/或
d）在90℃的洗涤温度下获得不超过最大20N/mm2的收缩张力，以及不超过最大65%的收缩度。
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