CN116922912A - 一种抗静电涂层转移消光膜及其制备方法 - Google Patents
一种抗静电涂层转移消光膜及其制备方法 Download PDFInfo
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Abstract
本发明公开了一种抗静电涂层转移消光膜,依次由下表层、次下表层、芯层、上表层组成,下表层、次下表层为抗静电消光转移层,上表层为抗粘层;抗粘层包括下述原料:抗粘母料、均聚聚丙烯;芯层包括下述原料:均聚聚丙烯、抗静电母料;抗静电消光转移层包括下述原料:消光转移料、抗静电母料、爽滑母料;抗静电母料包括下述原料:共聚聚丙烯、抗静电剂;抗静电母料在230℃/2.16KG标准测试下的熔融指数为60.0~70.0g/10min。本发明的抗静电涂层转移消光膜具有静电低、厚度均匀、消光效果稳定、转移效果好的优点,可用于皮革、纺织、板材、电器外壳等家居办公用品的涂层转移。
Description
技术领域
本发明涉及功能薄膜技术领域,尤其涉及一种抗静电涂层转移消光膜及其制备方法。
背景技术
BOPP消光转移膜是一种可用于纺织印刷转移、印花加工的功能薄膜。产品具有高雾度、低光泽度、漫反射状消光效果好、吸墨性能好、转移效果优异等特点。与传统薄膜加工方式不同,产品膜面无需上离型层,直接上油墨或进行烫金加工,通过加热、加压将图案、花纹等完全转印到布匹、皮革等材料上,提高成品外观效果。产品广泛用于纺织布匹、皮革、仿皮革、弹力布、箱包等转印、烫金加工行业,具有广阔市场潜力。
现有的BOPP消光转移膜生产过程中存在因摩擦等原因产生的静电大,导致薄膜表面能降低,进而出现转移后涂层转移不良、剥离不净问题。
发明内容
基于背景技术存在的技术问题,本发明提出了一种抗静电涂层转移消光膜及其制备方法,解决目前存在因静电大等原因导致的转移不良、剥离不净问题。
本发明提出的一种抗静电涂层转移消光膜,依次由下表层、次下表层、芯层、上表层组成,所述下表层、次下表层为抗静电消光转移层,上表层为抗粘层;
所述抗粘层包括下述原料:抗粘母料、均聚聚丙烯;
所述芯层包括下述原料:均聚聚丙烯、抗静电母料;
所述抗静电消光转移层包括下述原料:消光转移料、抗静电母料、爽滑母料;
所述抗静电母料包括下述原料:共聚聚丙烯、抗静电剂;所述抗静电母料在230℃/2.16KG标准测试下的熔融指数为60.0~70.0g/10min。
优选地,所述抗静电剂由非离子型甘油脂肪酸酯、酸胺及其衍生物按质量比为1:(0.8~2)组成。
优选地,所述抗静电母料包括下述质量百分比的原料:共聚聚丙烯55~65%、抗静电剂35~45%。
优选地,所述抗粘层包括下述质量百分比的原料:抗粘母料2~5%、均聚聚丙烯95~98%;所述芯层包括下述质量百分比的原料:均聚聚丙烯97~99%、抗静电母料1~3%;所述抗静电消光转移层包括下述质量百分比的原料:抗静电母料0.1~0.5%、爽滑母料0.5~2%、余量为消光转移料。
优选地,所述消光转移料包括下述质量百分比的原料:消光剂20~30%、增容剂6~10%、抗氧剂0.1~0.3%、余量为二元共聚物聚丙烯;所述消光转移料在230℃/2.16KG标准测试下的熔融指数为3.0~5.0g/10min。
其中,二元共聚物聚丙烯是由乙烯和丙烯共聚而成。
优选地,所述抗氧剂为受阻酚类抗氧剂、亚磷酸酯类抗氧剂或其组合。优选地,所述抗氧剂为抗氧剂1010、抗氧剂1076、抗氧剂168中的至少一种。
优选地,所述增容剂为线性低密度聚乙烯(LLDPE)。
优选地,所述消光剂为高密度聚乙烯(HDPE)。
优选地,所述爽滑母料包括下述质量百分比的原料:均聚聚丙烯80~90%、爽滑剂10~20%;所述爽滑母料在230℃/2.16KG标准测试下的熔融指数为15~20.0g/10min。
优选地,所述抗粘母料包括下述质量百分比的原料:均聚聚丙烯94~96%、合成类二氧化硅4~6%;所述抗粘母料在230℃/2.16KG标准测试下的熔融指数为4.0~9.0g/10min。
优选地,所述合成类二氧化硅为不规则边角球形,粒径为4~6μm。
优选地,所述下表层、次下表层的厚度之和为2.0~2.5μm,芯层的厚度为18~19.5μm,上表层的厚度为0.8~1.5μm。
优选地,所述下表层、次下表层的厚度之和为2.0~2.3μm,芯层的厚度为18.5~19.1μm,上表层的厚度为0.8~1.1μm。
一种所述的抗静电涂层转移消光膜的制备方法,包括下述步骤:分别将下表层、次下表层和上表层的原料加入三台辅挤出机中,将芯层的原料加入主挤出机中,进行加热熔融,然后经过模头复合共挤出,经过急冷辊冷却,形成铸片,将铸片经过纵向拉伸后,再经过预热、横向拉伸、定型,冷却后即得。
优选地,下表层、次下表层的加热熔融温度为220~225℃,芯层的加热熔融温度为250~260℃,上表层的加热熔融温度为235~245℃。
优选地,所述纵向拉伸的拉伸比为4.8~5.1,温度为110~125℃。
优选地,所述横向拉伸的温度为155~180℃。
本发明的有益效果如下:
消光转移薄膜在拉伸收卷过程中产生的母卷静电使得薄膜表面能降低,容易造成转移不良问题。本发明在芯层和消光转移层加入高效能、高流动性的抗静电母料,高效能高流动性使得抗静电剂在熔融流动过程分散更加均匀,更好地分散积聚的电荷,可以更快消除在薄膜拉伸牵引收卷过程中产生的静电,并防止由静电产生的静电斑纹,从而获得更好的涂层转移效果。
本发明还选用了合理的抗粘母料,上表层原料中的抗粘母料使用不规则边角略圆形的合成二氧化硅,即防止了薄膜的粘连同时也避免划伤薄膜从而导致的转移层损伤。
本发明的抗静电涂层转移消光膜还具有消光转移层厚度合理、均匀,消光效果好的优点,既具有良好的消光效果也具有良好的转移效果。
综上所述,本发明的抗静电涂层转移消光膜具有静电低、厚度均匀、消光效果稳定、转移效果好的优点,可用于皮革、纺织、板材、电器外壳等家居办公用品的涂层转移。
具体实施方式
下面,通过具体实施例对本发明的技术方案进行详细说明。
实施例1
一种抗静电涂层转移消光膜,依次由下表层、次下表层、芯层、上表层组成,所述下表层、次下表层为抗静电消光转移层,上表层为抗粘层;
抗粘层包括下述质量百分比的原料:抗粘母料2.5%、均聚聚丙烯97.5%;
芯层包括下述原料:均聚聚丙烯99%、抗静电母料1%;
次下表层为抗静电消光转移层,包括下述原料:抗静电母料0.1%、爽滑母料0.5%、余量为消光转移料。下表层的原料同次下表层。
抗静电母料包括下述质量百分比的原料:共聚聚丙烯55%、抗静电剂45%;抗静电母料在230℃/2.16KG标准测试下的熔融指数为65.04g/10min;抗静电剂由单甘油脂肪酸脂、油酸酰胺按质量比为1:1组成。
消光转移料包括下述质量百分比的原料:消光剂25%、增容剂9.8%、抗氧剂0.2%、余量为二元共聚物聚丙烯;二元共聚物聚丙烯是由乙烯和丙烯共聚而成,抗氧剂为抗氧剂168,增容剂为线性低密度聚乙烯,消光剂为高密度聚乙烯;消光转移料在230℃/2.16KG标准测试下的熔融指数为3.64g/10min。
爽滑母料包括下述质量百分比的原料:均聚聚丙烯80%、爽滑剂20%;爽滑剂为芥酸酰胺;爽滑母料在230℃/2.16KG标准测试下的熔融指数为18.65g/10min。
抗粘母料包括下述质量百分比的原料:均聚聚丙烯96%、合成类二氧化硅4%;合成类二氧化硅为不规则边角球形,粒径为5μm;抗粘母料在230℃/2.16KG标准测试下的熔融指数为6.48g/10min。
下表层的厚度为1μm,下表层的厚度为1μm,芯层的厚度为18μm,上表层的厚度为1μm。
制备抗静电涂层转移消光膜:分别将下表层、次下表层和上表层的原料加入三台辅挤出机中,将芯层的原料加入主挤出机中,进行加热熔融,然后经过模头复合共挤出,经过急冷辊冷却,形成铸片,将铸片经过纵向拉伸后,再经过预热、横向拉伸、定型,冷却后即得;下表层、次下表层的加热熔融温度为220~225℃,芯层的加热熔融温度为250~260℃,上表层的加热熔融温度为235~245℃;纵向拉伸的拉伸比为4.8~5.1,温度为110~125℃;横向拉伸的温度为155~180℃。
实施例2
一种抗静电涂层转移消光膜,依次由下表层、次下表层、芯层、上表层组成,所述下表层、次下表层为抗静电消光转移层,上表层为抗粘层;
抗粘层包括下述质量百分比的原料:抗粘母料2%、均聚聚丙烯98%;
芯层包括下述原料:均聚聚丙烯98.5%、抗静电母料1.5%;
次下表层为抗静电消光转移层,包括下述原料:抗静电母料0.15%、爽滑母料0.5%、余量为消光转移料。下表层的原料同次下表层。
抗静电母料包括下述质量百分比的原料:共聚聚丙烯55%、抗静电剂45%;抗静电母料在230℃/2.16KG标准测试下的熔融指数为65.04g/10min;抗静电剂由单甘油脂肪酸脂、油酸酰胺按质量比为1:0.8组成。
消光转移料包括下述质量百分比的原料:消光剂26%、增容剂9.8%、抗氧剂0.2%、余量为二元共聚物聚丙烯;二元共聚物聚丙烯是由乙烯和丙烯共聚而成,抗氧剂为抗氧剂168,增容剂为线性低密度聚乙烯,消光剂为高密度聚乙烯;消光转移料在230℃/2.16KG标准测试下的熔融指数为3.78g/10min。
爽滑母料包括下述质量百分比的原料:均聚聚丙烯80%、爽滑剂20%;爽滑剂为芥酸酰胺;爽滑母料在230℃/2.16KG标准测试下的熔融指数为18.49g/10min。
抗粘母料包括下述质量百分比的原料:均聚聚丙烯95%、合成类二氧化硅5%;合成类二氧化硅为不规则边角球形,粒径为5μm;抗粘母料在230℃/2.16KG标准测试下的熔融指数为8.01g/10min。
下表层的厚度为1μm,下表层的厚度为1μm,芯层的厚度为18.8μm,上表层的厚度为1μm。
抗静电涂层转移消光膜的制备方法同实施例1。
实施例3
一种抗静电涂层转移消光膜,依次由下表层、次下表层、芯层、上表层组成,所述下表层、次下表层为抗静电消光转移层,上表层为抗粘层;
抗粘层包括下述质量百分比的原料:抗粘母料2.5%、均聚聚丙烯97.5%;
芯层包括下述原料:均聚聚丙烯98%、抗静电母料2%;
次下表层为抗静电消光转移层,包括下述原料:抗静电母料0.2%、爽滑母料0.6%、余量为消光转移料。下表层的原料同次下表层。
抗静电母料包括下述质量百分比的原料:共聚聚丙烯55%、抗静电剂45%;抗静电母料在230℃/2.16KG标准测试下的熔融指数为65.04g/10min;抗静电剂由单甘油脂肪酸脂、油酸酰胺按质量比为1:2组成。
消光转移料包括下述质量百分比的原料:消光剂30%、增容剂9.8%、抗氧剂0.2%、余量为二元共聚物聚丙烯;二元共聚物聚丙烯是由乙烯和丙烯共聚而成,抗氧剂为抗氧剂168,增容剂为线性低密度聚乙烯,消光剂为高密度聚乙烯;消光转移料在230℃/2.16KG标准测试下的熔融指数为3.65g/10min。
爽滑母料包括下述质量百分比的原料:均聚聚丙烯80%、爽滑剂20%;爽滑剂为芥酸酰胺;爽滑母料在230℃/2.16KG标准测试下的熔融指数为18.49g/10min。
抗粘母料包括下述质量百分比的原料:均聚聚丙烯95%、合成类二氧化硅5%;合成类二氧化硅为不规则边角球形,粒径为5μm;抗粘母料在230℃/2.16KG标准测试下的熔融指数为8.01g/10min。
下表层的厚度为1.15μm,下表层的厚度为1.15μm,芯层的厚度为18.7μm,上表层的厚度为1μm。
抗静电涂层转移消光膜的制备方法同实施例1。
对比例1
对比例1为常规的转移消光膜,与实施例1的区别仅为:抗静电母料不同,且仅在芯层使用,下表层、次下表层使用普通消光料,且次表层使用硅酮爽滑剂。具体地,对比例1中的抗静电母料包括下述质量百分比的原料:共聚聚丙烯55%、抗静电剂45%;抗静电母料在230℃/2.16KG标准测试下的熔融指数为26.64g/10min;抗静电剂为油酸酰胺,次表层使用硅酮爽滑剂比例为3~6%,在230℃/2.16KG标准测试下的熔融指数为15.84g/10min。
对比例2
对比例2与实施例1的区别仅为:抗静电母料不同,抗静电母料包括下述质量百分比的原料:共聚聚丙烯55%、抗静电剂45%;抗静电母料在230℃/2.16KG标准测试下的熔融指数为26.64g/10min;抗静电剂由单甘油脂肪酸脂、油酸酰胺按质量比为1:1组成。
试验例
对实施例1~3和对比例1~2制得的薄膜的物性进行检测,测试结果如表1所述:
表1薄膜主要物性指标
由表1可知,五组抗静电涂层转移消光膜的力学性能符合国家标准,其中实施例1~3使用的高流动性抗静电母料的转移膜,与对比例1~2使用普通的抗静电母料的转移膜相比,表面电阻更低,静电衰减率更大,雾度和消光效果更好,收缩率低,在使用过程中转移涂层效果更好,未出现转移不良等情况,因此具有更好的消光转移效果。
以上所述,仅为本发明较佳的具体实施方式,但本发明的保护范围并不局限于此,任何熟悉本技术领域的技术人员在本发明揭露的技术范围内,根据本发明的技术方案及其发明构思加以等同替换或改变,都应涵盖在本发明的保护范围之内。
Claims (10)
1.一种抗静电涂层转移消光膜,其特征在于,依次由下表层、次下表层、芯层、上表层组成,所述下表层、次下表层为抗静电消光转移层,上表层为抗粘层;
所述抗粘层包括下述原料:抗粘母料、均聚聚丙烯;
所述芯层包括下述原料:均聚聚丙烯、抗静电母料;
所述抗静电消光转移层包括下述原料:消光转移料、抗静电母料、爽滑母料;
所述抗静电母料包括下述原料:共聚聚丙烯、抗静电剂;所述抗静电母料在230℃/2.16KG标准测试下的熔融指数为60.0~70.0g/10min。
2.根据权利要求1所述的抗静电涂层转移消光膜,其特征在于,所述抗静电剂由非离子型甘油脂肪酸酯、酸胺及其衍生物按质量比为1:(0.8~2)组成。
3.根据权利要求1所述的抗静电涂层转移消光膜,其特征在于,所述抗静电母料包括下述质量百分比的原料:共聚聚丙烯55~65%、抗静电剂35~45%。
4.根据权利要求1所述的抗静电涂层转移消光膜,其特征在于,所述抗粘层包括下述质量百分比的原料:抗粘母料2~5%、均聚聚丙烯95~98%;所述芯层包括下述质量百分比的原料:均聚聚丙烯97~99%、抗静电母料1~3%;所述抗静电消光转移层包括下述质量百分比的原料:抗静电母料0.1~0.5%、爽滑母料0.5~2%、余量为消光转移料。
5.根据权利要求1所述的抗静电涂层转移消光膜,其特征在于,所述消光转移料包括下述质量百分比的原料:消光剂20~30%、增容剂6~10%、抗氧剂0.1~0.3%、余量为二元共聚物聚丙烯;所述消光转移料在230℃/2.16KG标准测试下的熔融指数为3.0~5.0g/10min。
6.根据权利要求1所述的抗静电涂层转移消光膜,其特征在于,所述爽滑母料包括下述质量百分比的原料:均聚聚丙烯80~90%、爽滑剂10~20%;所述爽滑母料在230℃/2.16KG标准测试下的熔融指数为15~20.0g/10min。
7.根据权利要求1所述的抗静电涂层转移消光膜,其特征在于,所述抗粘母料包括下述质量百分比的原料:均聚聚丙烯94~96%、合成类二氧化硅4~6%;所述抗粘母料在230℃/2.16KG标准测试下的熔融指数为4.0~9.0g/10min。
8.根据权利要求1所述的抗静电涂层转移消光膜,其特征在于,所述下表层、次下表层的厚度之和为2.0~2.5μm,芯层的厚度为18~19.5μm,上表层的厚度为0.8~1.5μm;优选地,所述下表层、次下表层的厚度之和为2.0~2.3μm,芯层的厚度为18.5~19.1μm,上表层的厚度为0.8~1.1μm。
9.一种如权利要求1~8任一项所述的抗静电涂层转移消光膜的制备方法,其特征在于,包括下述步骤:分别将下表层、次下表层和上表层的原料加入三台辅挤出机中,将芯层的原料加入主挤出机中,进行加热熔融,然后经过模头复合共挤出,经过急冷辊冷却,形成铸片,将铸片经过纵向拉伸后,再经过预热、横向拉伸、定型,冷却后即得。
10.根据权利要求9所述的抗静电涂层转移消光膜的制备方法,其特征在于,下表层、次下表层的加热熔融温度为220~225℃,芯层的加热熔融温度为250~260℃,上表层的加热熔融温度为235~245℃;
所述纵向拉伸的拉伸比为4.8~5.1,温度为110~125℃;
所述横向拉伸的温度为155~180℃。
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