CN110588119A - 一种高遮盖低透光双轴取向尼龙薄膜及其制备方法 - Google Patents
一种高遮盖低透光双轴取向尼龙薄膜及其制备方法 Download PDFInfo
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Abstract
本发明涉及软包装材料技术领域,特别涉及一种高遮盖低透光双轴取向尼龙薄膜及其制备方法。薄膜包括五层结构,由上至下依次为防粘表层、遮盖层、刚性支撑芯层、遮盖层、防粘表层;遮盖层采用60%~90%的尼龙6和10%~40%的聚酰胺弹性体组成;遮盖层内含有扁球形气孔,气孔平行于薄膜平面的直径为2~8um,气孔垂直于薄膜平面的最大高度为0.1~0.5um。本发明提供的高遮盖低透光双轴取向尼龙薄膜,无需使用到无机颜料或油墨,在回收再利用上无任何限制,甚至是回收做成无色透明的制品也没有问题,另外遮盖层的气孔可降低材料的表观密度,满足现在绿色轻量化设计的需求,具有极高的光线遮盖性、低透光性、表观密度低,保持极佳的力学性能等优点。
Description
技术领域
本发明涉及软包装材料技术领域,特别涉及一种高遮盖低透光双轴取向尼龙薄膜及其制备方法。
背景技术
在软包装薄膜领域,由于一些包装内容物对光线敏感,需要在包装薄膜上对外部光线进行遮挡。而最常见的遮盖手段是使用乳白色薄膜或黑色薄膜,通过在薄膜里面添加大量的钛白粉、炭黑等颜料将薄膜染色,从而达到对光线的遮盖效果。但添加大量的无机颜料会严重降低薄膜的韧性,使包装本身的可靠性降低,另外颜色的存在也使薄膜在回收再利用上遇到很大的限制,大量的颜料填充也进一步使薄膜的密度增大,不利于薄膜的轻量化设计。
整版进行白色印刷也是包装薄膜上遮光常用的手段之一,通过白色油墨的高遮盖力来保护内容物,但是在薄膜上印刷白色油墨,一方面增加了加工工序,另一方面做多层复合时会降低复合的强度影响包装的可靠性。有色油墨的使用也极大限制了薄膜的回收再利用性。
发明内容
为解决上述背景技术中提到的软包装薄膜的遮光性问题,本发明提供一种高遮盖低透光双轴取向尼龙薄膜,包括五层结构,由上至下依次为防粘表层、遮盖层、刚性支撑芯层、遮盖层、防粘表层;
所述遮盖层采用60%~90%的尼龙6和10%~40%的聚酰胺弹性体组成;
所述遮盖层内含有扁球形气孔,气孔平行于薄膜平面的直径为2~8um,气孔垂直于薄膜平面的最大高度为0.1~0.5um,气孔的数量为5.0×105~1.0×108个/mm3。
在上述技术方案的基础上,进一步地,所述防粘表层采用99.45%~99.89%的尼龙6,0.01%~0.05%的爽滑剂和0.1%~0.5%的开口剂组成;
所述刚性支撑芯层的采用80%~90%的尼龙6和10%~20%的刚性聚酰胺组成。
在上述技术方案的基础上,进一步地,所述开口剂为滑石粉、二氧化硅、碳酸钙、玻璃微珠、粘土、硅藻土、氧化铝中的一种或多种组合。
在上述技术方案的基础上,进一步地,所述爽滑剂为芥酸酰胺、亚乙基双硬脂酰胺、硅酮粉、硅油、聚乙烯蜡中的一种或多种组合。
在上述技术方案的基础上,进一步地,所述聚酰胺弹性体中软段为聚烯烃、聚酯或聚醚,硬段为尼龙6、尼龙11或尼龙12。
在上述技术方案的基础上,进一步地,所述的刚性支撑层中刚性聚酰胺为尼龙45、尼龙46、MXD6、尼龙6/6T共聚物中的一种或多种组合。
在上述技术方案的基础上,进一步地,所述的防粘表层的厚度为1~2um,遮盖层的厚度为2~14um,刚性支撑层的厚度为4~13um。
在上述技术方案的基础上,进一步地,所述的薄膜其表观密度为0.950~1.050g/cm3。
本发明还提供一种根据如上任意所述高遮盖低透光双轴取向尼龙薄膜的制备方法,包括以下步骤:
S100、将防粘表层、遮盖层和刚性支撑芯层中各组分按比例分别进行混合,并通过高速搅拌机分散均匀;
S200、将防粘表层、遮盖层和刚性支撑芯层的原料分别通过各自的挤出机熔融挤出,其中遮盖层通过化学法或物理法进行发泡成孔,三台挤出机通过适配器分流成五层结构,经过T型模头流出,并在冷辊上冷却,形成未拉伸片材;
S300、将未拉伸片材在50~90℃加热下进行分步或同步拉伸,拉伸倍率为3.0×3.0;
S400、将拉伸后的薄膜进行热定型,其中定型温度为180~210℃,定型时间为10~20s,最后得到所述的双轴取向尼龙薄膜,薄膜厚度为10~45um。
在上述方案的基础上,进一步地,所述发泡工艺为:
步骤a、将遮盖层的挤出机熔体温度控制在260~280℃,熔体压力控制在20~25MPa;
步骤b、将压力为7~10MPa、温度为40~50℃的超临界二氧化碳通过计量泵打入遮盖层的挤出机中,打入的超临界二氧化碳量为遮盖层质量百分比的2%~5%;
步骤c、将T型模头内熔体的压力控制在12~16MPa,此时二氧化碳开始气化形成极微小气孔,并进一步膨胀长大并稳定下来,即完成遮盖层的发泡;
当熔体经过激冷辊冷却成未拉伸片材时,此时遮盖层内的气孔为圆球形,经过双向拉伸之后,因为拉伸的两个方向在薄膜平面两个方向上,片材平面面积变大而厚度减少,圆球形气孔也经过同样的变化,从而形成扁球形气孔。
本发明提供的高遮盖低透光双轴取向尼龙薄膜,通过发泡成孔形成遮盖层,气孔对光有反射及散射作用,有效阻止光透光尼龙薄膜,双轴取向进一步扩大了气孔的有效遮盖面积。
在遮盖层中添加聚酰胺弹性体可有效控制气孔的尺寸,当添加过少时,气孔成长过大,一定程度上破坏了膜层的连续性结构,严重影响薄膜的力学性能,而当添加量过多时,则气孔过小,遮盖性差。在薄膜的芯层中添加刚性聚酰胺,进一步加强了薄膜的韧性,使薄膜能保持优异的力学性能。
当熔体经过激冷辊冷却成未拉伸片材时,此时遮盖层内的气孔为圆球形,经过双向拉伸之后,因为拉伸的两个方向在薄膜平面两个方向上,片材平面面积变大而厚度减少,圆球形气孔也经过同样的变化,从而形成扁球形气孔。
本发明提供的高遮盖低透光双轴取向尼龙薄膜,无需使用到无机颜料或油墨,在回收再利用上无任何限制,甚至是回收做成无色透明的制品也没有问题,另外遮盖层的气孔可降低材料的表观密度,满足现在绿色轻量化设计的需求,具有极高的光线遮盖性、低透光性、表观密度低,保持极佳的力学性能等优点。
附图说明
为了更清楚地说明本发明实施例或现有技术中的技术方案,下面将对实施例或现有技术描述中所需要使用的附图作一简单地介绍,显而易见地,下面描述中的附图是本发明的一些实施例,对于本领域普通技术人员来讲,在不付出创造性劳动性的前提下,还可以根据这些附图获得其他的附图。
图1为本发明的高遮盖低透光双轴取向尼龙薄膜的结构示意图;
图2为本发明中气孔从平行于薄膜平面方向看的俯视示意图;
图3为本发明中气孔从薄膜截面方向看的结构示意图。
附图标记:
10 防粘表层 20 遮盖层 30 防粘表层
具体实施方式
为使本发明实施例的目的、技术方案和优点更加清楚,下面将结合本发明实施例中的附图,对本发明实施例中的技术方案进行清楚、完整地描述,显然,所描述的实施例是本发明一部分实施例,而不是全部的实施例。基于本发明中的实施例,本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例,都属于本发明保护的范围。
在本发明的描述中,需要说明的是,术语“中心”、“纵向”、“横向”、“上”、“下”、“前”、“后”、“左”、“右”、“竖直”、“水平”、“顶”、“底”、“内”、“外”等指示的方位或位置关系为基于附图所示的方位或位置关系,仅是为了便于描述本发明和简化描述,而不是指示或暗示所指的装置或元件必须具有特定的方位、以特定的方位构造和操作,因此不能理解为对本发明的限制。此外,术语“第一”、“第二”仅用于描述目的,而不能理解为指示或暗示相对重要性。
本发明提供以下高遮盖低透光双轴取向尼龙薄膜的具体制备实施例:
S100、将防粘表层、遮盖层和刚性支撑芯层中各组分按比例分别进行混合,并通过高速搅拌机分散均匀;
S200、将防粘表层、遮盖层和刚性支撑芯层的原料分别通过各自的挤出机熔融挤出,其中遮盖层通过化学法或物理法进行发泡成孔,三台挤出机通过适配器分流成五层结构,经过T型模头流出,并在冷辊上冷却,形成未拉伸片材;
S300、将未拉伸片材在80℃加热下进行分步或同步拉伸,拉伸倍率为3.0×3.0;
S400、将拉伸后的薄膜进行热定型,其中定型温度为200℃,定型时间为20s,最后得到所述的双轴取向尼龙薄膜。
其中,发泡成孔的工艺为:
步骤a、将遮盖层的挤出机熔体温度控制在260~280℃,熔体压力控制在20~25MPa;
步骤b、将压力为7~10MPa、温度为40~50℃的超临界二氧化碳通过计量泵打入遮盖层的挤出机中,打入的超临界二氧化碳量为遮盖层质量百分比的2%~5%;
步骤c、将T型模头内熔体的压力控制在12~16MPa,此时二氧化碳开始气化形成极微小气孔,并进一步膨胀长大并稳定下来,即完成遮盖层的发泡。
本发明提供的高遮盖低透光双轴取向尼龙薄膜包括五层结构,如图1所示,由上至下依次为防粘表层10、遮盖层20、刚性支撑芯层10、遮盖层20、防粘表层10,所述遮盖层采用60%~90%的尼龙6和10%~40%的聚酰胺弹性体组成;所述遮盖层内含有扁球形气孔(如图2和图3所示),气孔平行于薄膜平面的直径为2~8um,气孔垂直于薄膜平面的最大高度为0.1~0.5um,气孔的数量为5.0×105~1.0×108个/mm3。
具体实施例如下:
实施例1
防粘表层的组成为:尼龙6质量百分比含量为99.58%,爽滑剂芥酸酰胺质量百分比含量为0.02%,开口剂二氧化硅质量百分比含量为0.4%。
遮盖层的组成为:尼龙6质量百分比含量为85%,聚酰胺弹性体(阿克玛公司,Pebax HD 4313)质量百分比为15%;气孔使用超临界二氧化碳进行物理发泡形成。
刚性支撑芯层的组成为:尼龙6质量百分比含量为88%,刚性聚酰胺MXD6质量百分比含量为12%。
实施例2
防粘表层的组成为:尼龙6质量百分比含量为99.75%,爽滑剂亚乙基双硬脂酰胺质量百分比含量为0.05%,开口剂二氧化硅质量百分比含量为0.2%。
遮盖层的组成为:尼龙6质量百分比含量为75%,聚酰胺弹性体(阿克玛公司,Pebax HD 6313)质量百分比为25%;气孔使用超临界二氧化碳进行物理发泡形成。
刚性支撑芯层的组成为:尼龙6质量百分比含量为85%,刚性聚酰胺PA46质量百分比含量为15%。
实施例3
防粘表层的组成为:尼龙6质量百分比含量为99.47%,爽滑剂硅酮粉质量百分比含量为0.03%,开口剂二氧化硅质量百分比含量为0.5%。
遮盖层的组成为:尼龙6质量百分比含量为62%,聚酰胺弹性体(阿克玛公司,Pebax HD 5533)质量百分比为38%;气孔使用超临界二氧化碳进行物理发泡形成。
刚性支撑芯层的组成为:尼龙6质量百分比含量为80%,刚性聚酰胺尼龙6/6T共聚物质量百分比含量为20%。
比较例1
防粘表层的组成为:尼龙6质量百分比含量为99.69%,爽滑剂芥酸酰胺质量百分比含量为0.01%,开口剂二氧化硅质量百分比含量为0.3%。
遮盖层的组成为:尼龙6质量百分比含量为100%;气孔使用超临界二氧化碳进行物理发泡形成。
刚性支撑芯层的组成为:尼龙6质量百分比含量为85%,刚性聚酰胺MXD6质量百分比含量为12%。
比较例2
防粘表层的组成为:尼龙6质量百分比含量为99.77%,爽滑剂芥酸酰胺质量百分比含量为0.03%,开口剂二氧化硅质量百分比含量为0.2%。
遮盖层的组成为:尼龙6质量百分比含量为40%,聚酰胺弹性体(阿克玛公司,Pebax HD 4313)质量百分比为60%;气孔使用超临界二氧化碳进行物理发泡形成。
刚性支撑芯层的组成为:尼龙6质量百分比含量为95%,刚性聚酰胺PA46质量百分比含量为5%。
比较例3
市售15um白色尼龙薄膜(添加钛白粉颜料)。
将上述实施例和对比例制备得到的尼龙薄膜进行以下测试,其中:
气孔数计算方法:使用扫描电子显微镜对薄膜的截面在MD和TD方向上进行观察,随机取100um长度,数出在MD和TD方向上的气孔数a和b,将a×b则可以得出在100um×100um×遮盖层厚度H这个体积上气孔的数量,然后根据比例倍数扩展到1mm3体积内气孔的数量;
气孔尺寸计算方法:使用扫描电子显微镜对薄膜的截面及平面进行观察,测量出气孔的各方向尺寸;
薄膜表观密度计算方法:用电子天平称量薄膜质量,使用排液体法测算出薄膜的体积,根据密度公式进行计算。
测试结果如表1所示:
表1
实施例1 | 实施例2 | 实施例3 | 比较例1 | 比较例2 | 比较例3 | |
遮盖层厚度/um | 2 | 6 | 12 | 5 | 8 | - |
刚性芯层厚度/um | 4 | 7 | 12 | 9 | 8 | - |
拉伸强度/MPa | 245 | 238 | 251 | 165 | 218 | 200 |
气孔数/个/mm<sup>3</sup> | 9.8×10<sup>5</sup> | 3.6×10<sup>6</sup> | 2.8×10<sup>7</sup> | 6.9×10<sup>3</sup> | 5.4×10<sup>9</sup> | - |
气孔直径/um | 7.2 | 5.6 | 3.0 | 26.7 | 0.3 | - |
气孔高度/um | 0.48 | 0.33 | 0.19 | 2.3 | 0.11 | - |
表观密度/g/cm<sup>3</sup> | 1.01 | 0.98 | 0.99 | 1.01 | 1.03 | 1.20 |
透光率/% | 3.2 | 2.4 | 2.1 | 6.7 | 50 | 25 |
遮盖效果 | 好 | 好 | 好 | 好 | 差 | 一般 |
由上表可知,采用本发明所生产的高遮盖低透光双轴取向尼龙薄膜具有极高的光线遮盖性、低透光性、表观密度低,保持极佳的力学性能等优点。
尽管本文中较多的使用了诸如防粘表层、遮盖层、刚性支撑芯层、遮盖层、防粘表层等术语,但并不排除使用其它术语的可能性。使用这些术语仅仅是为了更方便地描述和解释本发明的本质;把它们解释成任何一种附加的限制都是与本发明精神相违背的。
最后应说明的是:以上各实施例仅用以说明本发明的技术方案,而非对其限制;尽管参照前述各实施例对本发明进行了详细的说明,本领域的普通技术人员应当理解:其依然可以对前述各实施例所记载的技术方案进行修改,或者对其中部分或者全部技术特征进行等同替换;而这些修改或者替换,并不使相应技术方案的本质脱离本发明各实施例技术方案的范围。
Claims (10)
1.一种高遮盖低透光双轴取向尼龙薄膜,其特征在于:包括五层结构,由上至下依次为防粘表层、遮盖层、刚性支撑芯层、遮盖层、防粘表层;
所述遮盖层采用60%~90%的尼龙6和10%~40%的聚酰胺弹性体组成;
所述遮盖层内含有扁球形气孔,气孔平行于薄膜平面的直径为2~8um,气孔垂直于薄膜平面的最大高度为0.1~0.5um,气孔的数量为5.0×105~1.0×108个/mm3。
2.根据权利要求1所述的高遮盖低透光双轴取向尼龙薄膜,其特征在于:所述防粘表层采用99.45%~99.89%的尼龙6,0.01%~0.05%的爽滑剂和0.1%~0.5%的开口剂组成;
所述刚性支撑芯层的采用80%~90%的尼龙6和10%~20%的刚性聚酰胺组成。
3.根据权利要求2所述的高遮盖低透光双轴取向尼龙薄膜,其特征在于:所述开口剂为滑石粉、二氧化硅、碳酸钙、玻璃微珠、粘土、硅藻土、氧化铝中的一种或多种组合。
4.根据权利要求2所述的高遮盖低透光双轴取向尼龙薄膜,其特征在于:所述爽滑剂为芥酸酰胺、亚乙基双硬脂酰胺、硅酮粉、硅油、聚乙烯蜡中的一种或多种组合。
5.根据权利要求1所述的高遮盖低透光双轴取向尼龙薄膜,其特征在于:所述聚酰胺弹性体中软段为聚烯烃、聚酯或聚醚,硬段为尼龙6、尼龙11或尼龙12。
6.根据权利要求1所述的高遮盖低透光双轴取向尼龙薄膜,其特征在于:所述刚性支撑层中刚性聚酰胺为尼龙45、尼龙46、MXD6、尼龙6/6T共聚物中的一种或多种组合。
7.根据权利要求1所述的高遮盖低透光双轴取向尼龙薄膜,其特征在于:所述的防粘表层的厚度为1~2um,遮盖层的厚度为2~14um,刚性支撑层的厚度为4~13um。
8.根据权利要求1所述的高遮盖低透光双轴取向尼龙薄膜,其特征在于:所述的薄膜其表观密度为0.950~1.050g/cm3。
9.一种根据权利要求1-8任一项所述高遮盖低透光双轴取向尼龙薄膜的制备方法,其特征在于,包括以下步骤:
S100、将防粘表层、遮盖层和刚性支撑芯层中各组分按比例分别进行混合,并通过高速搅拌机分散均匀;
S200、将防粘表层、遮盖层和刚性支撑芯层的原料分别通过各自的挤出机熔融挤出,其中遮盖层进行发泡成孔,采用三台挤出机通过适配器分流成五层结构,经过T型模头流出,并在冷辊上冷却,形成未拉伸片材;
S300、将未拉伸片材在50~90℃加热下进行分步或同步拉伸,拉伸倍率为3.0×3.0;
S400、将拉伸后的薄膜进行热定型,其中定型温度为180~210℃,定型时间为10~20s,最后得到所述的双轴取向尼龙薄膜,薄膜厚度为10~45um。
10.根据权利要求9所述的高遮盖低透光双轴取向尼龙薄膜的制备方法,其特征在于,所述发泡工艺为:
步骤a、将遮盖层的挤出机熔体温度控制在260~280℃,熔体压力控制在20~25MPa;
步骤b、将压力为7~10MPa、温度为40~50℃的超临界二氧化碳通过计量泵打入遮盖层的挤出机中,打入的超临界二氧化碳量为遮盖层质量百分比的2%~5%;
步骤c、将T型模头内熔体的压力控制在12~16MPa,此时二氧化碳开始气化形成极微小气孔,并进一步膨胀长大并稳定下来,即完成遮盖层的发泡。
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Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1533431A (en) * | 1975-02-21 | 1978-11-22 | Minnesota Mining & Mfg | Compressible printing plate mount |
CN1046343A (zh) * | 1989-03-29 | 1990-10-24 | 窒素公司 | 不透明模塑产品及其制造方法 |
CN101605841A (zh) * | 2007-01-31 | 2009-12-16 | 东丽株式会社 | 白色聚酯薄膜和反射片 |
JP2010234552A (ja) * | 2009-03-30 | 2010-10-21 | Toyobo Co Ltd | 積層2軸延伸ポリアミド系フィルム |
CN103217729A (zh) * | 2013-05-02 | 2013-07-24 | 江苏裕兴薄膜科技股份有限公司 | 聚酯反射膜及其制备方法 |
CN108290395A (zh) * | 2015-12-03 | 2018-07-17 | 克洛克纳潘特塑料欧洲有限两合公司 | 不透光收缩性包装膜 |
CN108883570A (zh) * | 2016-03-31 | 2018-11-23 | 东洋纺株式会社 | 含孔洞的热收缩性聚酯系薄膜 |
-
2019
- 2019-08-29 CN CN201910810374.2A patent/CN110588119B/zh active Active
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1533431A (en) * | 1975-02-21 | 1978-11-22 | Minnesota Mining & Mfg | Compressible printing plate mount |
CN1046343A (zh) * | 1989-03-29 | 1990-10-24 | 窒素公司 | 不透明模塑产品及其制造方法 |
CN101605841A (zh) * | 2007-01-31 | 2009-12-16 | 东丽株式会社 | 白色聚酯薄膜和反射片 |
JP2010234552A (ja) * | 2009-03-30 | 2010-10-21 | Toyobo Co Ltd | 積層2軸延伸ポリアミド系フィルム |
CN103217729A (zh) * | 2013-05-02 | 2013-07-24 | 江苏裕兴薄膜科技股份有限公司 | 聚酯反射膜及其制备方法 |
CN108290395A (zh) * | 2015-12-03 | 2018-07-17 | 克洛克纳潘特塑料欧洲有限两合公司 | 不透光收缩性包装膜 |
CN108883570A (zh) * | 2016-03-31 | 2018-11-23 | 东洋纺株式会社 | 含孔洞的热收缩性聚酯系薄膜 |
Non-Patent Citations (1)
Title |
---|
彭运秋: "超临界二氧化碳聚苯乙烯挤出发泡工艺研究", 《机电产品开发与创新》 * |
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