CN111114163A - 一种热敏成像的影像胶片及其制作方法 - Google Patents

一种热敏成像的影像胶片及其制作方法 Download PDF

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CN111114163A
CN111114163A CN201911347936.0A CN201911347936A CN111114163A CN 111114163 A CN111114163 A CN 111114163A CN 201911347936 A CN201911347936 A CN 201911347936A CN 111114163 A CN111114163 A CN 111114163A
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coating
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范一兵
田原野
李宾
涂亚舒
赵帅
程莹
李克
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Nanyang Clear Technology Co Ltd
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Abstract

一种热敏成像的影像胶片,包括PET基层、承载层、位于承载层中间的热敏成像层以及保护涂层,所述PET基层、承载层和保护涂层自下而上依次分布,所述承载层由质量组分为60‑70%的胶黏剂、质量组分为10‑15%的异丙醇、质量组分为5‑8%的纳米碳颗粒以及余量的去离子水组成;本发明采用胶黏剂作为热敏成像层的承载层,热敏成像层采用的染料微胶囊和显色剂,在制作时,在敏成像层的两侧刷上两层胶黏剂,胶黏剂固化后,会在染料微胶囊的外侧形成一个封闭的容纳腔室,对每个显像单元进行分隔,因此当显像单元中的染料微胶囊破裂显像后,不会发生减淡等现象,除高温外也不容易受到外部自然条件的影响,因此大大提高胶片成像的稳定性,便于保存。

Description

一种热敏成像的影像胶片及其制作方法
技术领域
本发明属于影像胶片技术领域,具体涉及一种热敏成像的影像胶片及其制作方法。
背景技术
热敏工艺是一种特殊的涂布加工,在胶片上面涂布一层热敏发色层,发色层是由胶粘剂、显色剂、无色染料(或称隐色染料)组成,没有通过微胶囊予以隔开,化学反应处于“潜伏”状态。当热敏纸遇到发热的打印头时,打印头所打印之处的显色剂与无色染料即发生化学反应而变色,形成图文。热敏材料被置于70℃以上环境时,热敏涂层开始变色。其变色的原因还要从它的成份谈起。热敏材料涂层中的热敏成份主要是两种:一种是无色染料或称隐色染料;另外一种是显色剂。这类热敏材料也被称为双组分化学型热敏记录材料。常用作无色染料的主要是:三苯甲烷基苯酞体系的结晶紫内酯(CVL)、荧烷体系、无色苯酰亚甲基蓝(BLMB)或螺吡喃体系等物质。常用作显色剂的主要是:对位羟基苯甲酸及其酯类(PHBB、PHB)、水杨酸、2,4-二羟基苯甲酸或芳族砜等物质。
热敏材料上的图文不稳定会自然退色,其原因是热敏材料的显色反应是可逆的,有色产物会不同程度地自行分解,图文颜色会慢慢退色越来越浅淡,直至自然退色到图文完全消失,因此放置时间长、光照时间长,受热时间长以及在较高的环境温度下、环境潮湿、接触胶纸等外界条件的作用下,还会加速颜色产物的分解,使图文退色加快,用户在储存后再次使用时,可能影像上的像发生轻微的改变,但是这对病灶的观察以及后期的影响是较大的。
发明内容
本发明提供了一种热敏成像的影像胶片及其制作方法,以解决上述背景技术中提出的问题。
为实现上述目的,本发明提供如下技术方案:一种热敏成像的影像胶片,包括PET基层、承载层、位于承载层中间的热敏成像层以及保护涂层,所述PET基层、承载层和保护涂层自下而上依次分布,所述承载层由质量组分为60-70%的胶黏剂、质量组分为10-15%的异丙醇、质量组分为5-8%的纳米碳颗粒以及余量的去离子水组成,所述热敏成像层由质量组分为30-40%的热敏材料和质量组分为60-70%的显色剂组成,所述热敏材料为染料微胶囊。
优选的,所述染料微胶囊的直径为0.5-0.8微米,所述染料微胶囊包括囊壁和囊芯,所述囊壁材料为多异氰酸酯;所述囊壁的厚度为0.1-0.15微米,所述囊芯包括染色剂和染色溶剂。
优选的,所述染色剂为光引发剂和二氨基苯甲酸衍生物,所述染色溶剂为甘油。
优选的,所述胶黏剂为环氧树脂、水性聚氨酯和丙烯酸酯中的一种。
一种热敏成像的影像胶片的制作方法,包括以下步骤:
步骤S1、将承载层所需的胶黏剂、异丙醇以及去离子水按比例投入到均质设备中,然后再添加纳米碳颗粒,进行均质30-50min;
步骤S2、将热敏材料和显色剂采用混合容器混合,搅拌速度为20-30r/min
,搅拌时间为20min;
步骤S3、使用凹版涂布机在PET基层上涂布S1中的混合液,涂布厚度为2-5微米,再均匀的涂布一层S2中的混合液,涂布厚度为1-2微米,待风干后,再涂布一层S1中的混合液,涂布厚度为2-5微米;
步骤S4、将UV材料喷涂在S3步骤完成后的涂层上方,形成保护涂层,然后进行烘干,同时进行UV灯照射固化,得到影像胶片。
优选的,在S3中的涂布速度为2.5g/min,采用热风机进行风干,风干的温度为30-35℃,风干时间为10min。
优选的,在S4中烘干的温度为40-50℃,烘干时间为40-70min,在S4中UV灯的波长为380nm。
优选的,在S4中所述的UV材料由UV稀释剂80%、三丙烯酸丙烷三甲醇酯10-15%、光引发剂3-5%和UV助剂2-3%。
与现有技术相比,本发明的有益效果是:
本发明采用胶黏剂作为热敏成像层的承载层,热敏成像层采用的染料微胶囊和显色剂,在制作时,在敏成像层的两侧刷上两层胶黏剂,胶黏剂固化后,会在染料微胶囊的外侧形成一个封闭的容纳腔室,对每个显像单元进行分隔,因此当显像单元中的染料微胶囊破裂显像后,不会发生减淡等现象,除高温外也不容易受到外部自然条件的影响,因此大大提高胶片成像的稳定性,便于保存。
具体实施方式
下面将对本发明实施例中的技术方案进行清楚、完整地描述,显然,所描述的实施例仅仅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。
实施例1
本发明提供以下技术方案:一种热敏成像的影像胶片,包括PET基层、承载层、位于承载层中间的热敏成像层以及保护涂层,所述PET基层、承载层和保护涂层自下而上依次分布,所述承载层由质量组分为65%的胶黏剂、质量组分为12%的异丙醇、质量组分为7%的纳米碳颗粒以及余量的去离子水组成,所述热敏成像层由质量组分为35%的热敏材料和质量组分为65%的显色剂组成,所述热敏材料为染料微胶囊。
本实施例中,将承载层所需的质量组分为65%的胶黏剂、质量组分为12%的异丙醇、质量组分为7%的纳米碳颗粒以及余量的去离子水,进行均质30-50min;将质量组分为35%的热敏材料和质量组分为65%的显色剂采用混合容器混合,搅拌速度为20-30r/min,搅拌时间为20min;使用凹版涂布机在PET基层上涂布均质设备中的混合液,涂布厚度为2微米,再均匀的涂布一层搅拌设备中的混合液,涂布厚度为1微米,待风干后,再涂布一层均质设备中的混合液,涂布厚度为2微米;再将UV材料喷涂在涂层上方,形成保护涂层,然后进行烘干,同时进行UV灯照射固化,得到影像胶片。
具体的,所述染料微胶囊的直径为0.8微米,所述染料微胶囊包括囊壁和囊芯,所述囊壁材料为多异氰酸酯;所述囊壁的厚度为0.1微米,所述囊芯包括染色剂和染色溶剂。
具体的,所述染色剂为光引发剂和二氨基苯甲酸衍生物,所述染色溶剂为甘油。
具体的,所述胶黏剂为环氧树脂。
上述的一种热敏成像的影像胶片的制作方法,包括以下步骤:
步骤S1、将承载层所需的胶黏剂、异丙醇以及去离子水按比例投入到均质设备中,然后再添加纳米碳颗粒,进行均质30-50min;
步骤S2、将热敏材料和显色剂采用混合容器混合,搅拌速度为20-30r/min
,搅拌时间为20min;
步骤S3、使用凹版涂布机在PET基层上涂布S1中的混合液,涂布厚度为2微米,再均匀的涂布一层S2中的混合液,涂布厚度为1微米,待风干后,再涂布一层S1中的混合液,涂布厚度为2微米;
步骤S4、将UV材料喷涂在S3步骤完成后的涂层上方,形成保护涂层,然后进行烘干,同时进行UV灯照射固化,得到影像胶片。
具体的,在S3中的涂布速度为2.5g/min,采用热风机进行风干,风干的温度为30-35℃,风干时间为10min。
具体的,在S4中烘干的温度为50℃,烘干时间为40min,在S4中UV灯的波长为380nm。
具体的,在S4中所述的UV材料由UV稀释剂80%、三丙烯酸丙烷三甲醇酯13%、光引发剂5%和UV助剂2%。
实施例2
本发明提供以下技术方案:一种热敏成像的影像胶片,包括PET基层、承载层、位于承载层中间的热敏成像层以及保护涂层,所述PET基层、承载层和保护涂层自下而上依次分布,所述承载层由质量组分为60%的胶黏剂、质量组分为15%的异丙醇、质量组分为8%的纳米碳颗粒以及余量的去离子水组成,所述热敏成像层由质量组分为30%的热敏材料和质量组分为70%的显色剂组成,所述热敏材料为染料微胶囊。
本实施例中,将承载层所需的质量组分为60%的胶黏剂、质量组分为15%的异丙醇、质量组分为8%的纳米碳颗粒以及余量的去离子水,进行均质50min;将质量组分为30%的热敏材料和质量组分为70%的显色剂采用混合容器混合,搅拌速度为30r/min,搅拌时间为20min;使用凹版涂布机在PET基层上涂布均质设备中的混合液,涂布厚度为2微米,再均匀的涂布一层搅拌设备中的混合液,涂布厚度为1微米,待风干后,再涂布一层均质设备中的混合液,涂布厚度为2微米;再将UV材料喷涂在涂层上方,形成保护涂层,然后进行烘干,同时进行UV灯照射固化,得到影像胶片。
具体的,所述染料微胶囊的直径为0.6微米,所述染料微胶囊包括囊壁和囊芯,所述囊壁材料为多异氰酸酯;所述囊壁的厚度为0.1微米,所述囊芯包括染色剂和染色溶剂。
具体的,所述染色剂为光引发剂和二氨基苯甲酸衍生物,所述染色溶剂为甘油。
具体的,所述胶黏剂为环氧树脂。
上述的一种热敏成像的影像胶片的制作方法,包括以下步骤:
步骤S1、将承载层所需的胶黏剂、异丙醇以及去离子水按比例投入到均质设备中,然后再添加纳米碳颗粒,进行均质50min;
步骤S2、将热敏材料和显色剂采用混合容器混合,搅拌速度为30r/min
,搅拌时间为20min;
步骤S3、使用凹版涂布机在PET基层上涂布S1中的混合液,涂布厚度为2微米,再均匀的涂布一层S2中的混合液,涂布厚度为1微米,待风干后,再涂布一层S1中的混合液,涂布厚度为2微米;
步骤S4、将UV材料喷涂在S3步骤完成后的涂层上方,形成保护涂层,然后进行烘干,同时进行UV灯照射固化,得到影像胶片。
具体的,在S3中的涂布速度为2.5g/min,采用热风机进行风干,风干的温度为35℃,风干时间为10min。
具体的,在S4中烘干的温度为50℃,烘干时间为40min,在S4中UV灯的波长为380nm。
具体的,在S4中所述的UV材料由UV稀释剂80%、三丙烯酸丙烷三甲醇酯12%、光引发剂5%和UV助剂3%。
实施例3
本发明提供以下技术方案:一种热敏成像的影像胶片,包括PET基层、承载层、位于承载层中间的热敏成像层以及保护涂层,所述PET基层、承载层和保护涂层自下而上依次分布,所述承载层由质量组分为70%的胶黏剂、质量组分为10%的异丙醇、质量组分为8%的纳米碳颗粒以及余量的去离子水组成,所述热敏成像层由质量组分为40%的热敏材料和质量组分为60%的显色剂组成,所述热敏材料为染料微胶囊。
本实施例中,将承载层所需的质量组分为70%的胶黏剂、质量组分为10%的异丙醇、质量组分为8%的纳米碳颗粒以及余量的去离子水,进行均质50min;将质量组分为30%的热敏材料和质量组分为70%的显色剂采用混合容器混合,搅拌速度为30r/min,搅拌时间为20min;使用凹版涂布机在PET基层上涂布均质设备中的混合液,涂布厚度为5微米,再均匀的涂布一层搅拌设备中的混合液,涂布厚度为2微米,待风干后,再涂布一层均质设备中的混合液,涂布厚度为5微米;再将UV材料喷涂在涂层上方,形成保护涂层,然后进行烘干,同时进行UV灯照射固化,得到影像胶片。
具体的,所述染料微胶囊的直径为0.5微米,所述染料微胶囊包括囊壁和囊芯,所述囊壁材料为多异氰酸酯;所述囊壁的厚度为0.1微米,所述囊芯包括染色剂和染色溶剂。
具体的,所述染色剂为光引发剂和二氨基苯甲酸衍生物,所述染色溶剂为甘油。
具体的,所述胶黏剂为丙烯酸酯。
上述的一种热敏成像的影像胶片的制作方法,包括以下步骤:
步骤S1、将承载层所需的胶黏剂、异丙醇以及去离子水按比例投入到均质设备中,然后再添加纳米碳颗粒,进行均质40min;
步骤S2、将热敏材料和显色剂采用混合容器混合,搅拌速度为20r/min
,搅拌时间为20min;
步骤S3、使用凹版涂布机在PET基层上涂布S1中的混合液,涂布厚度为5微米,再均匀的涂布一层S2中的混合液,涂布厚度为2微米,待风干后,再涂布一层S1中的混合液,涂布厚度为5微米;
步骤S4、将UV材料喷涂在S3步骤完成后的涂层上方,形成保护涂层,然后进行烘干,同时进行UV灯照射固化,得到影像胶片。
具体的,在S3中的涂布速度为2.5g/min,采用热风机进行风干,风干的温度为35℃,风干时间为10min。
具体的,在S4中烘干的温度为45℃,烘干时间为60min,在S4中UV灯的波长为380nm。
具体的,在S4中所述的UV材料由UV稀释剂80%、三丙烯酸丙烷三甲醇酯12%、光引发剂5%和UV助剂3%。
最后应说明的是:以上所述仅为本发明的优选实施例而已,并不用于限制本发明,尽管参照前述实施例对本发明进行了详细的说明,对于本领域的技术人员来说,其依然可以对前述各实施例所记载的技术方案进行修改,或者对其中部分技术特征进行等同替换。凡在本发明的精神和原则之内,所作的任何修改、等同替换、改进等,均应包含在本发明的保护范围之内。

Claims (8)

1.一种热敏成像的影像胶片,其特征在于:包括PET基层、承载层、位于承载层中间的热敏成像层以及保护涂层,所述PET基层、承载层和保护涂层自下而上依次分布,所述承载层由质量组分为60-70%的胶黏剂、质量组分为10-15%的异丙醇、质量组分为5-8%的纳米碳颗粒以及余量的去离子水组成,所述热敏成像层由质量组分为30-40%的热敏材料和质量组分为60-70%的显色剂组成,所述热敏材料为染料微胶囊。
2.根据权利要求1所述的一种热敏成像的影像胶片,其特征在于:所述染料微胶囊的直径为0.5-0.8微米,所述染料微胶囊包括囊壁和囊芯,所述囊壁材料为多异氰酸酯;所述囊壁的厚度为0.1-0.15微米,所述囊芯包括染色剂和染色溶剂。
3.根据权利要求2所述的一种热敏成像的影像胶片,其特征在于:所述染色剂为光引发剂和二氨基苯甲酸衍生物,所述染色溶剂为甘油。
4.根据权利要求1所述的一种热敏成像的影像胶片,其特征在于:所述胶黏剂为环氧树脂、水性聚氨酯和丙烯酸酯中的一种。
5.根据权利要求1所述的一种热敏成像的影像胶片的制作方法,其特征在于:包括以下步骤:
步骤S1、将承载层所需的胶黏剂、异丙醇以及去离子水按比例投入到均质设备中,然后再添加纳米碳颗粒,进行均质30-50min;
步骤S2、将热敏材料和显色剂采用混合容器混合,搅拌速度为20-30r/min,搅拌时间为20min;
步骤S3、使用凹版涂布机在PET基层上涂布S1中的混合液,涂布厚度为2-5微米,再均匀的涂布一层S2中的混合液,涂布厚度为1-2微米,待风干后,再涂布一层S1中的混合液,涂布厚度为2-5微米;
步骤S4、将UV材料喷涂在S3步骤完成后的涂层上方,形成保护涂层,然后进行烘干,同时进行UV灯照射固化,得到影像胶片。
6.根据权利要求5所述的一种热敏成像的影像胶片的制作方法,其特征在于:在S3中的涂布速度为2.5g/min,采用热风机进行风干,风干的温度为30-35℃,风干时间为10min。
7.根据权利要求5所述的一种热敏成像的影像胶片的制作方法,其特征在于:在S4中烘干的温度为40-50℃,烘干时间为40-70min,在S4中UV灯的波长为380nm。
8.根据权利要求5所述的一种热敏成像的影像胶片的制作方法,其特征在于:在S4中所述的UV材料由UV稀释剂80%、三丙烯酸丙烷三甲醇酯10-15%、光引发剂3-5%和UV助剂2-3%。
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