CN105034502A - 用于生产标签的多层吹塑薄膜 - Google Patents

用于生产标签的多层吹塑薄膜 Download PDF

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CN105034502A
CN105034502A CN201510248955.3A CN201510248955A CN105034502A CN 105034502 A CN105034502 A CN 105034502A CN 201510248955 A CN201510248955 A CN 201510248955A CN 105034502 A CN105034502 A CN 105034502A
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polyethylene
inflation film
polypropylene
film
layer
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诺贝特·丹尼斯
克里斯蒂安·库克茨
拉尔夫·尼佩尔特
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Nitto Advanced Film Gronau GmbH
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Abstract

本发明涉及用于生产标签的多层吹塑薄膜，所述吹塑薄膜具有通过共挤出形成的层结构。根据本发明，层结构包括聚乙烯构成的两个外层(1)、聚乙烯构成的芯层(2)、以及芯层(2)两侧由熔体流动指数大于4.0g/10min(根据ISO？1133，在230℃、2.16kg测量)的聚丙烯构成的中间层(3)。

Description

用于生产标签的多层吹塑薄膜
技术领域
本发明涉及用于制备标签的多层吹塑薄膜，所述吹塑薄膜具有通过共挤出形成的层结构。
背景技术
DE102007045117A1已知一种用于制备标签的多层吹塑薄膜。该薄膜的层结构包括聚乙烯构成的两个外层和聚丙烯混合物构成的芯层。聚丙烯混合物由5～25重量％的聚丙烯均聚物(PP-H)、5～35重量％的聚丙烯无规共聚物(PP-RC)和40～80重量％的聚丙烯嵌段共聚物(PP-BC)。芯混合物的特征是可以促进材料弯曲刚度和冲压性能的低份额聚丙烯均聚物，混合高份额的PP嵌段共聚物，可以由此制造具有高弹性模量和低浊度的吹塑薄膜。已知的吹塑薄膜是柔性的，并且是针对大幅度弯曲表面开发的。对于很多应用而言，希望标签薄膜有更高的弯曲刚度。也需要改善已知薄膜的冲压性能。
EP1919706B1已知一种用于包装的多层薄膜，该多层薄膜具有聚乙烯构成的两个外层以及芯层。芯层由聚丙烯和茂金属催化的线性聚乙烯(mLLDPE)的混合物构成。丙烯优选是均聚物，并且具有最大4g/10min的熔体流动指数(根据ISO1133，在230℃、2.16kg测量)。
由实践已知，在常见的吹塑薄膜设备上无法可靠加工熔体流动指数高于4.0g/10min的聚丙烯，因为随着熔体流动指数增大不再确保稳定的吹塑薄膜挤出。
发明内容
在此背景下，本发明的任务在于，提供一种用于制备标签的多层吹塑薄膜，所述吹塑薄膜具有很大的弯曲刚度、良好的冲压性能并且可良好印刷。除了这些特性之外，也力求实现高撕裂抗力以及在不同方向(生产方向MD和横向CD)均衡的撕裂扩展抗力。
该任务的主题和解决方案是根据权利要求1的多层吹塑薄膜。
根据本发明的吹塑薄膜的层结构包括聚乙烯构成的两个外层、聚乙烯构成的芯层、以及芯层两侧由熔体流动指数大于4.0g/10min(根据ISO1133，在230℃和2.16kg测量)的聚丙烯构成的中间层。优选使用具有5.0～15g/10min的熔体流动指数(ISO1133，230℃，2.16kg测量)的聚丙烯均聚物作为芯层两侧的中间层。现有技术中主要将熔体流动指数如此高的聚丙烯加工成流延薄膜。令人惊奇的是，通过聚丙烯层与聚乙烯构成的芯层的根据本发明的组合，可以在吹塑薄膜挤出时将膜泡稳定化。已发现，稳定化很显著，使得也可使用通常由于大于4.0g/10min的高熔体流动指数而不能吹塑的聚丙烯均聚物作为中间层。通过使用具有高熔体流动指数的聚丙烯均聚物显著改善机械特性，这对于用作标签薄膜而言很重要。由于熔体流动指数大，因此聚丙烯可更好冲压。此外，根据本发明的吹塑薄膜特点还有在生产方向(MD)和横向(CD)上均衡的机械特性。
芯层优选由双峰聚乙烯构成，或者由密度介于0.925g/cm3和0.94g/cm3之间的双峰聚乙烯混合物构成。优选将双峰LLDPE、双峰LMDPE或者其混合物用于芯层。双峰聚乙烯具有至少两种聚乙烯成分，这些聚乙烯成分的平均分子量和分子量分布由于不同的聚合反应条件而有所区别。双峰聚合物的分子量分布的特征在于分布曲线具有两个最大值。根据分子量分布，双峰聚乙烯具有例如关于机械强度和刚度的最佳值。在吹塑薄膜挤出时，可以利用由聚乙烯尤其是双峰聚乙烯构成的芯层对共挤薄膜的韧性及其加工性能施加有利影响，而基本不降低吹塑薄膜的刚度。使用双峰LMDPE特别有利，因为可以将有利的刚度值、韧性值和加工性能值相互组合。
还令人惊奇地发现，双峰聚乙烯(LLDPE/LMDPE)具有直接在聚丙烯上的出色的层附着。因此，在芯层和由聚丙烯构成的中间层之间不需要增附剂层。
由聚乙烯构成的外层起到改善光泽的作用，并且用来将对于其它步骤如粘合剂涂覆和印刷所必需的外侧预处理更好地固定。外层优选由单峰聚乙烯或者单峰聚乙烯的混合物构成。优选密度介于0.925～0.94g/cm3之间的聚乙烯。外层优选由线性聚乙烯LLDPE、LMDPE或者由LLDPE和LMDPE的混合物构成，其中还可以含有一定份额的LDPE。
适宜在聚乙烯构成的外层和聚丙烯构成的中间层之间布置增附剂层。由丙烯和乙烯构成的共聚物适合于增进附着。
外层适宜具有小于6μm的层厚。外层优选具有1μm～4μm之间的层厚。由于低的外层层厚，由聚丙烯，优选聚丙烯均聚物构成的中间层的刚性材料向外拓展很远，并且使得弯曲刚度明显改善。
聚丙烯中间层对吹塑薄膜的机械特性有着决定性影响。由聚丙烯构成的中间层以及由聚乙烯构成的芯层优选各自具有10μm和30μm之间的层厚。
吹塑薄膜可以具有介于40μm和100μm之间的总厚度。优选介于50μm和80μm之间的总厚度，尤其是介于50μm和70μm之间的总厚度。
吹塑薄膜的各个层通常可以含有添加剂和填料。属于此的尤其是防粘连剂、加工助剂、着色剂等等。可以将根据本发明的标签薄膜制成透明或者着色的薄膜，其中由聚乙烯构成的外层对于薄膜的光泽是决定性的。由聚乙烯构成的芯层和PP中间层可以含有色料。如果使用紫外稳定剂作为添加剂，则优选将其引入所有层中。
附图1以放大描述的方式图解展示了根据本发明的多层标签薄膜的剖面。
以下将根据仅一个描述实施例的附图，对本发明进行阐释。唯一的附图以放大描述的方式图解展示了多层标签薄膜的剖面。
附图所示的根据本发明的标签薄膜是一种多层吹塑薄膜，其具有通过共挤出形成的层结构。层结构包括聚乙烯构成的两个外层1、聚乙烯构成的芯层2、以及芯层两侧由熔体流动指数MFI大于4.0g/10min(根据ISO1133，在230℃、2.16kg测量)的聚丙烯构成的中间层3。中间层优选由熔体流动指数介于5.0～15g/10min(根据ISO1133，在230℃、2.16kg测量)之间的聚丙烯均聚物(PP-H)构成。
芯层2由双峰聚乙烯尤其是双峰LMDPE和/或者双峰LLDPE构成。LMDPE可以具有介于0.927～0.946g/cm3之间的密度，并且LLDPE可以具有介于0.917g/cm3和0.926g/cm3之间的密度。芯层优选具有介于0.925g/cm3和0.94g/cm3之间的密度。通过使用双峰LMDPE/LLDPE可以使得在吹塑薄膜挤出时产生的膜泡稳定化，并且能够对因为高于4.0g/10min的高丙烯熔体流动指数而不能吹塑的聚丙烯层进行处理。
外层1由单峰聚乙烯构成，其中优选线性聚乙烯、尤其是LLDPE和/或LMDPE构成的外层。除了LLDPE和LMDPE之外，外层1还可以含有附加份额的LDPE。还可以在外层1和中间层3之间设置增附剂层4。乙烯和丙烯的共聚物适合作为增附剂。
外层1具有小于6μm的层厚。外层的层厚优选为1μm至4μm。
由聚丙烯构成的中间层3和由聚乙烯构成的芯层2各自具有介于10μm和30μm之间的层厚。通过确定层厚及其相互间的比例，可以改变吹塑薄膜的机械特性。
吹塑薄膜可以具有40μm～100μm的总厚度。吹塑薄膜优选具有介于50μm和70μm之间的总厚度。
薄膜的层可以含有常见添加剂，如防粘连剂、加工助剂和着色剂。
本发明的实施例：
生产具有通过共挤出形成的层结构的66μm厚的吹塑薄膜，所述层结构包括单峰LMDPE构成的3μm厚的外层、熔体流动指数(MFI)为6.5(根据ISO1133，在230℃、2.16kg测量)的PP-H构成的10μm厚的中间层、以及双峰LMDPE构成的24μm厚的芯层。
对比实施例1：
对比实施例1涉及根据现有技术DE102007045117A1所述具有层结构的三层吹塑薄膜，其具有聚乙烯构成的6μm厚的外层以及由具有一定份额的聚丙烯均聚物(PP-H)、聚丙烯无规共聚物(PP-RC)和聚丙烯嵌段共聚物(PP-BC)的聚丙烯混合物构成的48μm厚的芯层。
对比实施例2：
对比实施例2涉及一种具有由LDPE和HDPE构成的层的三层聚乙烯薄膜，芯层中的PE-HD的份额大于外层中的PE-HD的份额。
表1中列出了上述薄膜的机械特性。根据测量结果，根据本发明的吹塑薄膜不仅在生产方向(MD)、而且也在横向(CD)具有均衡的机械特性。根据本发明的吹塑薄膜尤其具有高弯曲刚度的特点。尽管根据本发明的吹塑薄膜的薄膜厚度明显小于用于对比的聚乙烯薄膜(对比实施例VB2)的厚度，仍然可实现类似的弯曲刚度值。关于对比实施例VB1，根据本发明的吹塑薄膜的弯曲刚度值也较优越。
良好的弯曲刚度有利于根据本发明用作标签薄膜。对于用作薄膜标签，对吹塑薄膜进行印刷，并且利用粘合剂施涂在载体上，例如硅化纸或者塑料薄膜上。在进一步的加工过程中对由标签薄膜和载体构成的层合物进行冲压，其中将边角料作为冲裁网格从载体揭除，在载体上留下单独的标签部分。在施用(Spenden)时，即在将标签施加在待施加的物品上时，以很小的弯曲半径使得载体以很大的角度翻起，其中标签部分从载体剥脱。标签部分的弯曲刚度必须足够大，因此能够将已经从离型膜或载体上脱离的标签部分的部分自由悬空移动到待贴标的物品上的放置点，而不会弯曲离开预定的轨迹。
此外，根据本发明的吹塑薄膜的特征还在于良好的冲压性能。与聚乙烯薄膜相比(对比实施例VB2)，根据本发明的吹塑薄膜可明显更好的冲压。
表1
术语
弹性模量：根据DINENISO527(版次2013-07)确定弹性模量。
弯曲刚度：使用预选的测量长度L[mm]和均匀的角速度将薄膜试样一直弯曲到所设置的弯曲角度α[度]，测量此时产生的变形力F[mN]。根据DIN53121进行测量。表1中提供的值是针对弯曲角度30°和测量长度10mm确定的。
抗拉强度：抗拉强度是拉伸试验过程中由所达到的最大拉力基于样品的原始横断面算出的应力。根据DINENISO527(版次2003-07)确定抗拉强度。

Claims (9)

1.用于制备标签的多层吹塑薄膜，所述吹塑薄膜具有通过共挤出形成的层结构，所述层结构具有聚乙烯构成的两个外层、聚乙烯构成的芯层、以及芯层两侧由熔体流动指数(MFI)大于4.0g/10min(根据ISO1133，在230℃、2.16kg测量)的聚丙烯构成的中间层。
2.根据权利要求1所述的吹塑薄膜，其特征在于，中间层的聚丙烯具有介于5.0～15g/10min(根据ISO1133，在230℃、2.16kg测量)之间的熔体流动指数(MFI)。
3.根据权利要求1或2所述的吹塑薄膜，其特征在于，芯层具有密度介于0.925g/cm3和0.94g/cm3之间的双峰聚乙烯或者双峰聚乙烯混合物。
4.根据权利要求1～3中任一项所述的吹塑薄膜，其特征在于，外层由密度介于0.925g/cm3和0.94g/cm3之间的单峰聚乙烯或者单峰聚乙烯混合物构成。
5.根据权利要求4所述的吹塑薄膜，其特征在于，外层由线性聚乙烯或者由LLDPE和LMDPE的混合物构成。
6.根据权利要求1～5中任一项所述的吹塑薄膜，其特征在于，在外层和中间层之间设置增附剂层。
7.根据权利要求1～6中任一项所述的吹塑薄膜，其特征在于，外层具有小于6μm的层厚，优选具有1～4μm的层薄膜厚。
8.根据权利要求1～7中任一项所述的吹塑薄膜，其特征在于，聚丙烯中间层和由聚乙烯构成的芯层各自具有介于10μm和30μm之间的层厚。
9.根据权利要求1～8中任一项所述的吹塑薄膜，其特征在于，吹塑薄膜具有介于40μm和100μm之间的总厚度，尤其具有介于50μm和80μm之间的总厚度，并且优选具有介于50μm和70μm之间的总厚度。
CN201510248955.3A 2014-03-17 2015-03-17 用于生产标签的多层吹塑薄膜 Pending CN105034502A (zh)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109016761A (zh) * 2018-08-10 2018-12-18 顺丰速运有限公司 塑料膜及快递袋

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2860031B1 (en) * 2013-10-11 2016-03-30 Borealis AG Machine direction oriented film for labels
WO2022187118A1 (en) * 2021-03-05 2022-09-09 Avery Dennison Corporation Multilayer polyolefin films and methods for their production

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101174679A (zh) * 2006-04-07 2008-05-07 赛尔格有限责任公司 表现出改善强度和稳定性的多层隔板
CN101489787A (zh) * 2006-07-17 2009-07-22 艾利丹尼森公司 非对称多层聚合物膜和标签材料及其标签
CN101558115A (zh) * 2006-12-15 2009-10-14 弗纳技术股份有限公司 聚丙烯吹塑薄膜
US20110252746A1 (en) * 2010-04-16 2011-10-20 Liqui-Box Corporation Multi-Layer, Ethylene Polymer-Based Films with Novel Polypropylene Blend-Based Stiffening Layer
CN102369239A (zh) * 2009-03-13 2012-03-07 Upm拉弗拉塔克公司 标签用纵向取向的膜
CN102576502A (zh) * 2009-10-14 2012-07-11 优泊公司 模内成型用标签、模内成型品及其成型方法
CN102639319A (zh) * 2009-12-03 2012-08-15 埃克森美孚石油公司 多层不透明膜、包括这样的膜的制品和它们的用途
EP2578395A1 (en) * 2011-10-04 2013-04-10 Rkw Se Multilayer label film construction for pressure sensitive labels
CN103068574A (zh) * 2010-08-06 2013-04-24 北欧化工公司 多层膜

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10162974B4 (de) * 2000-12-25 2014-02-20 Sumitomo Chemical Co. Ltd. Blasfolie
EP1759833A1 (en) 2005-08-30 2007-03-07 Borealis Technology Oy Film
DE102007045117A1 (de) 2007-09-20 2009-04-09 Nordenia Deutschland Gronau Gmbh Etikettenfolie

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101174679A (zh) * 2006-04-07 2008-05-07 赛尔格有限责任公司 表现出改善强度和稳定性的多层隔板
CN101489787A (zh) * 2006-07-17 2009-07-22 艾利丹尼森公司 非对称多层聚合物膜和标签材料及其标签
CN101558115A (zh) * 2006-12-15 2009-10-14 弗纳技术股份有限公司 聚丙烯吹塑薄膜
CN102369239A (zh) * 2009-03-13 2012-03-07 Upm拉弗拉塔克公司 标签用纵向取向的膜
CN102576502A (zh) * 2009-10-14 2012-07-11 优泊公司 模内成型用标签、模内成型品及其成型方法
CN102639319A (zh) * 2009-12-03 2012-08-15 埃克森美孚石油公司 多层不透明膜、包括这样的膜的制品和它们的用途
US20110252746A1 (en) * 2010-04-16 2011-10-20 Liqui-Box Corporation Multi-Layer, Ethylene Polymer-Based Films with Novel Polypropylene Blend-Based Stiffening Layer
CN103068574A (zh) * 2010-08-06 2013-04-24 北欧化工公司 多层膜
EP2578395A1 (en) * 2011-10-04 2013-04-10 Rkw Se Multilayer label film construction for pressure sensitive labels

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109016761A (zh) * 2018-08-10 2018-12-18 顺丰速运有限公司 塑料膜及快递袋

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