CN115286902A - 压出式包装泡罩包装材料、包括其的压出式包装泡罩包装体及其制备方法 - Google Patents
压出式包装泡罩包装材料、包括其的压出式包装泡罩包装体及其制备方法 Download PDFInfo
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Abstract
本发明涉及新的压出式包装(PTP)泡罩包装材料、包括其的压出式包装泡罩包装体及其制备方法,更具体地涉及容易切割,可光滑地形成切割面的聚对苯二甲酸乙二醇酯(PET)类泡罩包装材料、利用其制备的泡罩包装体及其制备方法。
Description
技术领域
本发明涉及新的聚对苯二甲酸乙二醇酯(PET)类压出式包装(PTP,Press throughpackage)泡罩包装材料、利用其制备的压出式包装泡罩包装体及其制备方法。
背景技术
用于加热成型塑料片,形成一个或多个凹陷的空间,其中放入物品,用纸、纸板、塑料膜或薄片、铝箔等覆盖开口部,粘结周边部和基材的包装的塑料膜或薄片为热塑性塑料,大部分使用聚氯乙烯。该包装的特征在于,可从成型的透明的部分中看清商品,在相反的一侧的纸板部分可表示使用方法等。用途为将电池或剃须刀、牙刷等的电器产品或日用品等挂在挂架上使用,因而提高展示效果,相比于内容物,其体积大,还具有防盗(pilfer-proof)的功能。食品和医药品为了防伪还需要密封,因而进行塑料之间的加热密封。尤其,医药品中很多产品使用利用热塑性塑料片加热成型,将片剂或胶囊放入凹陷的空间,开口部由将加热密封剂涂敷于铝的材料加热密封的压出式包装(PTP,press through package)包装法,是使用时在塑料一侧加压通过铝箔取出包装的片剂、胶囊、食品等的方式。
经调查,作为压出式包装包装的一种的泡罩包装全球市场规模在2019年达到201亿美元以上,在2018~2028年CAGR预测为6.35%,其规模持续扩大。
泡罩包装(blister packaging)方式为加热加工成辊形态的薄的塑料片(或薄膜),使加热的塑料膜附着于模具,以制备包装材料的形状的成型方法,在韩国国内是多使用为真空成型和吸塑包装等术语的塑料包装容器生产的最代表性的生产工序。泡罩包装使用真空成型机,放入加热的塑料树脂,使加热的薄片紧贴在安装于成型设备内的模具,将内部形成为真空状态之后,向模具内部快速投入空气,以对产品进行成型。并且,成型的产品经过冷却过程,为了离型(或脱模-从模具中取出成型品的工作)需要裁剪成型品的切割过程。并且,对于真空成型而言,根据成型品的形状,不仅是模具的形状,需要用于离型(切割)的单独的刀板,作为用于成型的主要树脂,多使用低廉的价格的聚氯乙烯(PVC,polyvinylchloride),具有以少的力也可容易切割的优点(参照图1),但存在产生有害成分的问题,从而开发PET面料。
但是,当前,如图2的A~C中照片所示,PET面料的压出式包装泡罩包装材料即使折几十次也难以切割,即使给予强的力切割一部分,切割面也不干净,产生切割面导致割手或伤手的问题,口香糖、巧克力等食品用压出式包装泡罩包装材料存在当儿童从包装材料中拿出食品时,频繁受伤的问题。
对此,当前,如同PVC,对当施加适当的力时,容易切割,切割时可形成干净的切割面的压出式包装泡罩包装材料用PET面料的需求增大。
现有技术文献
专利文献
(专利文献0001)韩国专利授权号10-2075089号(公告日2020年2月7日)
(专利文献0002)韩国公开专利号10-2019-0088540号(公开日2019年7月26日)
发明内容
要解决的问题
本发明涉及作为解决现有PET类压出式包装泡罩包装材料的问题,即,难以切割,切割面锋利的问题的新的原材料的包装材料以最佳组合物及最佳组成比包括的压出式包装泡罩包装材料及其制备方法及包括其的泡罩包装体。
问题的解决方案
为了解决上述问题,本发明的压出式包装泡罩包装材料包括特性粘度为0.70~0.78dl/gr的PET类共聚物、特性粘度为0.80~0.85dl/gr的PET类共聚物及母料。
本发明的再一目的在于,提供加工上述包装材料制备的泡罩包装体。
本发明的另一目的在于,提供上述压出式包装泡罩包装材料和/或包装体的制备方法。
发明的效果
由本发明的压出式包装泡罩包装材料制备的薄片或薄膜形态的泡罩包装体可提供即使不施加过度的力也容易切割,尤其,不锋利地形成切割面,可预先防止锋利的切割面使使用人员受伤,作为可再利用的环保原材料具有高的商品性的泡罩包装体。
附图说明
图1为用手切割利用普通的聚氯乙烯原材料的压出式包装泡罩包装材料包装的产品的照片。
图2为用手切割利用以往PET原材料的压出式包装泡罩包装材料包装的产品的照片。
图3表示本发明的薄膜(或薄片)形态的压出式包装泡罩包装体的制备工序照片。
具体实施方式
以下,更具体说明本发明的压出式包装泡罩包装材料。
本发明的压出式包装泡罩包装材料导入两种特性粘度不同的PET类共聚物树脂制备,具体地,包括:第一树脂,包括低特性粘度(Intrinsic Viscosity)的PET类共聚物;第二树脂,包括作为高特性粘度的PET类共聚物;以及母料。
上述第一树脂及第二树脂的PET类共聚物的特性粘度差为0.06~0.02dl/gr,优选为0.05~0.03dl/gr,更优选为0.05~0.04dl/gr。此时,当特性粘度差大于0.06dl/gr时,作为压出式包装泡罩包装材料所需的机械物性有可能下降,当特性粘度差小于0.02dl/gr时,有可能存在利用本发明的包装材料制备的泡罩包装体的切割面不光滑的问题,因而优选地,使用具有上述范围内的特性粘度差的PET树脂。
上述第一树脂的低特性粘度的PET类共聚物包括间苯二甲酸、对苯二甲酸及(C1~C5的亚烷基)二醇的共聚物,优选地,可包括间苯二甲酸、对苯二甲酸及(C2~C4的亚烷基)二醇的共聚物,更优选地,可包括间苯二甲酸、对苯二甲酸及(C2~C3的亚烷基)二醇的共聚物。
上述低特性粘度的PET类共聚物的特性粘度为0.70~0.78dl/gr,优选为0.72~0.78dl/gr,更优选为0.745~0.765dl/gr。此时,当特性粘度小于0.70dl/gr时,有可能存在压出式包装泡罩包装材料的机械物性降低的问题,当特性粘度大于0.78dl/gr时,几乎无与第二树脂的特性粘度差,无法制备所要制备的包装材料,优选地,使用具有上述范围内的特性粘度的PET类共聚物。并且,上述第一树脂的热分解温度(Decomposition temperature)可以为300℃以上,熔点(melting point)可以为240℃以上,相对密度(Relative density)可以为1.36~1.50gr/cm3,优选地,相对密度可以为1.38~1.46gr/cm3。
压出式包装泡罩包装材料组成中上述第二树脂的高特性粘度的PET类共聚物包括间苯二甲酸、对苯二甲酸及乙二醇的共聚物,热分解温度可以为300℃以上,熔点可以为240℃以上,相对密度可以为1.38~1.40gr/cm3。上述高特性粘度的PET类共聚物的特性粘度可以为0.80~0.85dl/gr,优选地,可以为0.80~0.82dl/gr。
压出式包装泡罩包装材料组成中母料起到第一树脂和第二树脂配合物的固化及断裂物性变化作用,可包括分散剂、分解剂及PET类共聚物。
母料成分中上述分散剂起到使压出式包装泡罩包装材料组成之间很好地配合的作用,用于吸附物质,可包括选自ZnO、聚乙烯蜡(polyethylene wax)及表面活性剂(surfactant)中的一种以上,优选地,可包括选自ZnO及聚乙烯蜡中的一种以上。
并且,在母料总重量中,分散剂的含量为0.5~2.0重量百分比,优选地,可以为0.5~1.5重量百分比,更优选地,可以为0.7~1.2重量百分比。此时,当分散剂含量小于0.5重量百分比时,其使用量太少,有可能存在配合物之间混合性不足的问题,当分散剂含量大于2重量百分比时,属于过量使用,反而有可能存在压出式包装泡罩包装材料的柔韧性下降的问题,因而优选地,在上述范围内使用。
母料成分中上述分解剂起到容易断裂,使切割面变得光滑的作用,在母料总重量中,包括0.5~3.0重量百分比,优选地,可包括0.6~2.0重量百分比,更优选地,可包括0.8~1.5重量百分比。此时,当分解剂含量小于0.5重量百分比时,其使用量太少,可使切割面变得光滑的效果不完善,当分解剂含量大于3.0重量百分比时,属于过量使用,反而有可能存在当压出式包装泡罩包装材料的薄膜生产时断裂耽误生产的问题,因而优选地,在上述范围内使用。
并且,上述分解剂可包括使过氧化二异丙苯(Dicumyl peroxide)、钠粉末、锌粉末、沸石粉末、碳酸钙及(C1~C4的亚烷基)双硬脂酰胺((C1~C4 alkylene)bisstearamide)聚合来制备的聚合物,优选地,可包括使过氧化二异丙苯5~8重量百分比、钠粉末3~6重量百分比、锌粉末5~10重量百分比、沸石粉末8~12重量百分比、碳酸钙0.1~1.0重量百分比及余量的(C1~C4的亚烷基)双硬脂酰胺聚合来制备的聚合物,更优选地,可包括使过氧化二异丙苯6~8重量百分比、钠粉末3~5重量百分比、锌粉末5~8重量百分比、沸石粉末10~12重量百分比、碳酸钙0.1~0.5重量百分比及余量的(C2~C3的亚烷基)双硬脂酰胺聚合来制备的聚合物。
并且,母料成分中PET类共聚物优选地使用作为第二树脂的上述高特性粘度的PET类共聚物。
本发明的泡罩包装材料可包括上述第二树脂18~25重量百分比、上述母料5~15重量百分比及余量的上述第一树脂,优选地,可包括上述第二树脂18.5~23.5重量百分比、上述母料7.5~12.5重量百分比及余量的上述第一树脂,更优选地,可包括上述第二树脂19.0~22.0重量百分比、上述母料8.0~12.0重量百分比及余量的上述第一树脂。此时,当第二树脂含量小于18重量百分比或大于25重量百分比时,有可能存在制备的压出式包装泡罩包装材料的机械物性差,或切割面不光滑的问题。并且,当母料含量小于5重量百分比时,有可能存在难以断裂的问题,当大于15重量百分比时,属于过量使用,有可能存在当生产断裂耽误生产的问题,因而优选地,在上述范围内使用。
本发明的压出式包装泡罩包装材料除了前面说明的第一树脂、第二树脂及母料之外,在防止物性下降的范围内还可包括增塑剂、防紫外线剂、抗氧化剂、增强剂、阻燃剂、冲击加固剂等添加剂。
本发明的泡罩包装体可以为将前面说明的压出式包装泡罩包装材料成型加工的薄膜或薄片形态。
并且,泡罩包装体由收容包装对象物的收容部、平坦部及盖包装体形成,上述盖包装体可包括由本发明的压出式包装泡罩包装材料制备的薄膜或薄片。
并且,上述盖包装体在上述薄膜或薄片的压出式包装泡罩包装材料的上部和/或下部还可包括气密层、印刷层等。
上述平坦部可包括铝箔等。
若对其更具体说明,则如图3中由照片表示制备工序,可执行如下工序来制备薄膜或薄片形态的泡罩成型体,上述工序包括:第一步骤,配合前面说明的压出式包装泡罩包装材料,以制备配合物;第二步骤,将上述配合物投入于结晶器之后,执行结晶化工序;第三步骤,将执行结晶化工序的配合物投入于干燥机之后,执行干燥工序;以及第四步骤,对执行干燥工序的配合物执行成型工序,以制备薄膜或薄片化的成型物。
并且,还可包括含有使第四步骤的上述成型物滚压(rolling)来包装的第五步骤的工序。
第一步骤的压出式包装泡罩包装材料的组成及组成比如上所述。
第二步骤的结晶化工序为防止在干燥工序中原材料熔敷于料斗内部的工序,可在底板加热器温度为200~230℃,优选为210~230℃,更优选为220~230℃的条件下执行2~6小时,优选地,可执行3~5小时左右。此时,当底板加热器温度小于200℃时,有可能存在在干燥工序中原材料成团的问题,当底板加热器温度大于230℃时,有可能存在在压出式包装泡罩包装材料成分内第一树脂和/或第二树脂热分解的问题,因而优选地,在上述范围内执行结晶化工序。
第三步骤的干燥为用于原料除湿的工序,在120~180℃中,优选地,在120~160℃中,执行30分钟~2小时左右。此时,当干燥工序温度小于120℃时,工序时间变得太长,存在生产率降低的问题,当干燥工序温度大于180℃时,有可能存在原料碳化,导致产生黑点、斑点等的问题,因而优选地,在上述温度范围内执行干燥工序。
第四步骤的上述成型工序可通过该领域中使用的常规的成型方法执行,例举优选一例,可在挤压头温度为250~290℃、T冲模温度为230~270℃及压力为10~14kgf/cm2的条件下执行挤压成型,以制备薄片或薄膜。
使用前面说明的压出式包装泡罩包装材料制备的本发明的薄膜以及薄片形态的泡罩包装体的断裂点物性优秀,如同现有PVC原材料的泡罩包装,容易切割,切割面光滑。
当根据ASTM D1708测定时,利用本发明的上述薄片形态的泡罩包装体制备的压出式包装泡罩包装体的拉伸强度为600kg/cm2以上,优选地,可满足600~700kg/cm2。
并且,当根据ASTM D256方法测定时,利用上述薄片形态的泡罩包装体制备的压出式包装泡罩包装体的冲击强度为3.7kg·cm/cm以上,优选地,可满足3.9~5.0kg·cm/cm,更优选地,可满足3.9~4.7kg·cm/cm。
并且,当根据ASTM D177方法测定时,利用上述薄片形态的泡罩包装体制备的压出式包装泡罩包装体的热导率为(6.5~8.0)×104/℃,优选地,可满足(6.5~7.7)×104/℃,更优选地,可满足(6.5~7.5)×104/℃。
并且,当根据ISO527测定时,利用上述薄片形态的泡罩包装体制备的压出式包装泡罩包装体的断裂点为25~35%,优选地,可满足27~34%。
以下,通过实施例更具体说明本发明,但以下实施例并不限制本发明的范围,其应被解释为有助于理解本发明。
实施例
实施例1:压出式包装泡罩包装材料及薄片型包装体的制备
-(1)压出式包装泡罩包装材料的制备
准备包括使间苯二甲酸、对苯二甲酸及(C2~C3的亚烷基)二醇共聚来制备的特性粘度为0.76dl/gr的PET类共聚物(热分解温度为300℃以上,熔点为240℃以上,相对密度为1.38~1.46gr/cm3)的第一树脂。
准备包括使间苯二甲酸、对苯二甲酸及乙二醇二醇共聚来制备的特性粘度为0.80dl/gr的PET类共聚物(热分解温度为300℃以上,熔点为240℃以上,相对密度为1.38~1.40gr/cm3)的第二树脂。
准备混合及搅拌作为分散剂的ZnO 1重量百分比、分解剂1重量百分比及余量的上述特性粘度为0.80dl/gr的PET类共聚物来制备的母料。
上述分解剂包括使过氧化二异丙苯7.2重量百分比、钠粉末3.8重量百分比、锌粉末6.2重量百分比、沸石粉末11.3重量百分比、碳酸钙0.4重量百分比及余量的乙烯双硬脂酰胺聚合来制备的聚合物。
然后,将上述第二树脂20重量百分比、上述母料10重量百分比及余量的上述第一树脂投入于配合机之后,配合20分钟,以制备压出式包装泡罩包装材料(比重为1.25~1.40)(参照图3)。
(2)薄片型泡罩包装体的制备
将上述压出式包装泡罩包装材料,即,配合物投入于结晶器之后,在底板加热器温度为225~230℃的条件下将结晶化工序执行4小时。
然后,执行结晶化工序的配合物投入于干燥机之后,在140℃中执行干燥1小时。
然后,在挤压头温度为270℃,T冲模温度为250℃及压力为11~12kgf/cm2的条件下,对执行干燥工序的配合物执行挤压成型,以制备薄片型泡罩包装体。
然后,卷绕(滚压)执行挤压成型工序来制备的薄片,以制备成品(参照图3)。
实施例2~6及比较例1~6
以与上述实施例1相同的方法制备薄片型压出式包装泡罩包装体,如下列表1中所示,改变制备包装材料所需的第一树脂、第二树脂及母料的组成及组成比来分别制备压出式包装泡罩包装材料之后,利用其制备薄片型压出式包装泡罩包装体,以分别实施实施例2~6及比较例1~6。
此时,构成比较例5的第二树脂的PET共聚物的特性粘度为0.86dl/gr,比较例6的第二树脂与第一树脂相同。
表1
实验例:物性测定
测定在上述实施例1~6及比较例1~6中制备的压出式包装泡罩包装体的比重、拉伸强度、冲击强度、热导率及断裂点,将其结果示于下列表2中。
此时,根据ASTM D1708方法测定拉伸强度。根据ASTM D256方法测定冲击强度。根据ASTM D177方法测定热导率。根据ISO527测定断裂点。
表2
察看上述表2的物性测定结果,可确认由本发明的压出式包装泡罩包装材料制备的薄片型包装体的拉伸强度为600~700kg/cm2,冲击强度为3.9~5.0kg·cm/cm,热导率为(6.5~7.5)×104/℃及适当断裂点(ISO527测定)为25~35%左右。
相反,第二树脂含量小于18重量百分比的比较例1相比于实施例1及实施例2,存在机械物性相对大大减少的问题,第二树脂大于25重量百分比的比较例2相比于实施例1及实施例3,拉伸强度优秀,但反而呈现无冲击强度增大效果,断裂点过高的结果,呈现包装体的切割面不光滑的结果。
并且,母料含量小于5重量百分比的比较例3相比于实施例4,存在断裂点急剧增加的问题,其结果,存在包装体难以断裂的问题。
并且,母料含量大于15重量百分比的比较例4相比于实施例5,反而存在断裂点过低,生产率差的问题。
第一树脂和第二树脂的特性粘度差大于0.06dl/gr的比较例5相比于实施例1及实施例6,热导率优秀,但存在拉伸强度、冲击强度及断裂点的机械物性大大减少的问题。
并且,在第一树脂和第二树脂的无特性粘度的比较例6中,存在断裂点非常高的问题,存在包装体的切割面不光滑的问题。
通过上述实施例及实验例,可确认利用本发明的压出式包装泡罩包装材料制备的压出式包装泡罩包装体具有优秀的机械物性,具有适当范围的断裂点,可提供切割面光滑地形成的压出式包装泡罩包装体。
Claims (10)
1.一种压出式包装泡罩包装材料,其特征在于,包括:
第一树脂,包括特性粘度为0.70~0.78dl/gr的聚对苯二甲酸乙二醇酯类共聚物;
第二树脂,包括特性粘度为0.80~0.85dl/gr的聚对苯二甲酸乙二醇酯类共聚物;以及
母料。
2.根据权利要求1所述的压出式包装泡罩包装材料,其特征在于,第一树脂及第二树脂的聚对苯二甲酸乙二醇酯类共聚物的特性粘度差为0.06~0.02dl/gr。
3.根据权利要求1所述的压出式包装泡罩包装材料,其特征在于,
上述第一树脂的聚对苯二甲酸乙二醇酯类共聚物包括间苯二甲酸、对苯二甲酸及(C1~C5的亚烷基)二醇的共聚物,
上述第二树脂的聚对苯二甲酸乙二醇酯类共聚物包括间苯二甲酸、对苯二甲酸及乙二醇二醇的共聚物。
4.根据权利要求1所述的压出式包装泡罩包装材料,其特征在于,
上述第一树脂的聚对苯二甲酸乙二醇酯类共聚物的热分解温度为300℃以上,熔点为240℃以上,相对密度为1.36~1.50gr/cm3,
上述第二树脂的聚对苯二甲酸乙二醇酯类共聚物的热分解温度为300℃以上,熔点为240℃以上,相对密度为1.38~1.40gr/cm3。
5.根据权利要求1所述的压出式包装泡罩包装材料,其特征在于,包括上述第二树脂18~25重量百分比、上述母料5~15重量百分比及余量的第一树脂。
6.根据权利要求1所述的压出式包装泡罩包装材料,其特征在于,
上述母料包括分散剂0.5~2.0重量百分比、分解剂0.5~3.0重量百分比及余量的聚对苯二甲酸乙二醇酯类共聚物树脂,
上述聚对苯二甲酸乙二醇酯类共聚物树脂为与上述第二树脂相同的树脂。
7.根据权利要求6所述的压出式包装泡罩包装材料,其特征在于,
上述分散剂包括选自ZnO、聚乙烯蜡及表面活性剂中的一种以上,
上述分解剂包括使过氧化二异丙苯、钠粉末、锌粉末、沸石粉末、碳酸钙及(C1~C4的亚烷基)双硬脂酰胺聚合来制备的聚合物。
8.根据权利要求7所述的压出式包装泡罩包装材料,其特征在于,上述聚合物使过氧化二异丙苯5~8重量百分比、钠粉末3~6重量百分比、锌粉末5~10重量百分比、沸石粉末8~12重量百分比、碳酸钙0.1~1.0重量百分比及余量的(C1~C4的亚烷基)双硬脂酰胺聚合来制备而成。
9.一种压出式包装泡罩包装体,其特征在于,呈加工权利要求1至8中任一项所述的压出式包装泡罩包装材料的薄膜或薄片形态。
10.一种压出式包装泡罩包装体的制备方法,其特征在于,执行如下工序,上述工序包括:
第一步骤,配合权利要求1至8中任一项所述的压出式包装泡罩包装材料,以制备配合物;
第二步骤,将上述配合物投入于结晶器之后,执行结晶化工序;
第三步骤,将执行结晶化工序的配合物投入于干燥机之后,执行干燥工序;
第四步骤,对执行干燥工序的配合物执行成型工序,以制备薄膜或薄片化的成型物;以及
第五步骤,使上述成型物滚压来包装。
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