CN116905282A - 一种热升华转印纸涂层及其制备方法和应用 - Google Patents
一种热升华转印纸涂层及其制备方法和应用 Download PDFInfo
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Abstract
本发明涉及转印纸技术领域,具体涉及一种热升华转印纸涂层及其制备方法和应用。按质量份计,热升华转印纸涂层的原料包括10~80份的吸墨材料、20~80份填料、1~5份的稳定材料、1~10份的润滑材料和1~2份的助剂;润滑材料为硬脂酸锌、硬脂酸钙、硬脂酸酰胺、油酸酰胺、乙撑双硬脂酸酰胺、石蜡中的一种或多种;稳定材料为三(2‑乙基己基)磷酸、十二烷基硫酸钠、甲基戊醇、古尔胶、脂肪酸聚乙二醇酯、聚丙烯酸钠中的一种或多种。本发明的热升华转印纸涂层,减少了生产过程中杂质产生的同时防止了涂层水分下渗至原纸层。涂层原料之间具有协同作用,具有更强的疏水性能,减少了墨水的渗透、毛边和图像重影问题,提高了图像的精度。
Description
本申请是申请日为2021年1月27日,申请号为202110122116.2,发明名称为“一种热升华转印纸涂层及其制备方法和应用”的中国发明专利申请的分案申请。
技术领域
本发明涉及转印纸技术领域,具体涉及一种热升华转印纸涂层及其制备方法和应用。
背景技术
热升华转印是将人像、风景、文字等图文使用装有热升华转印墨水的喷墨打印机以镜象方式打印在热升华转印纸上,再经过热转印设备进行加热,使热升华纸上的热转印墨升华渗入到承印物,从而把纸上的彩色图象逼真地转印到承印物上的一种工艺。热升华转印工艺具有成本低、个性化定制强、应用领域广泛等优点。
现有技术中,热升华转印纸的生产主要包括机外涂布和机内涂布两种方式。机外涂布因生产过程繁琐、效率低、成本高,无法满足现在市场对热升华转印纸的价格需求,所以机内涂布生产方式得到了越来越多的关注和应用。然而,采用机内涂布工艺时,市场上的转印纸皆存在墨量承载不够、渗透虚花现象明显、转印后印花精度低的问题,同时还存在涂布刮痕、涂料块、涂布横幅定量不均、张力不均、破边、孔洞等纸病,其中涂布刮痕、涂料块、涂布横幅定量不均占比高达70%。
因此,需对现有技术进一步改善。
发明内容
有鉴于此,有必要针对上述的问题,提供一种热升华转印纸涂层及其制备方法,解决现有技术中机内生产的热升华转印纸涂布刮痕和涂料杂质的粘附、涂布不均、图像毛边、渗透,精度不高等问题。
为实现上述目的,本发明采取以下的技术方案:
第一方面,本发明提供一种热升华转印纸涂层,按质量份计,所述热升华转印纸涂层的原料包括10~80份的吸墨材料、20~80份填料、1~5份的稳定材料、1~10份的润滑材料和1~2份的助剂;所述润滑材料为硬脂酸锌、硬脂酸钙、硬脂酸酰胺、油酸酰胺、乙撑双硬脂酸酰胺、石蜡中的一种或多种;所述稳定材料为三(2-乙基己基)磷酸、十二烷基硫酸钠、甲基戊醇、古尔胶、脂肪酸聚乙二醇酯、聚丙烯酸钠中的一种或多种。
优选的,上述热升华转印纸涂层中,所述稳定材料为聚丙烯酸钠,重均分子量为1000~5000。
优选的,上述热升华转印纸涂层中,所述润滑材料为硬脂酸钙。
进一步的,上述热升华转印纸涂层中,所述吸墨材料为羧甲基纤维素钠、聚丙烯酰胺、琼胶、羟丙基纤维素、聚乙烯吡咯烷酮、壳聚糖中的一种或多种。
优选的,上述热升华转印纸涂层中,所述吸墨材料为羧甲基纤维素钠,羧甲基纤维素钠取代度≥0.6,纯度≥90%,水分≤10%。
进一步的,上述热升华转印纸涂层中,所述填料为煅烧高岭土、轻质碳酸钙、二氧化钛、氧化淀粉、燕麦原淀粉、酯化淀粉的一种或多种。
优选的,上述热升华转印纸涂层中,所述填料为煅烧高岭土、轻质碳酸钙和氧化淀粉的混合物。
进一步的,上述热升华转印纸涂层中,所述助剂包括杀菌剂、消泡剂、流平剂。
进一步的,上述热升华转印纸涂层中,所述热升华转印纸涂层的涂布量为3~6gsm。
进一步的,上述热升华转印纸涂层中,所述热升华转印纸涂层还包括按质量份计的0.1~10份的粘性树脂。
第二方面,本发明提供一种热升华转印纸涂层的制备方法,按照上述原料配比,包括以下步骤:
步骤S1:将水与稳定材料置于高速分散罐中,低速搅拌10-20分钟;
步骤S2:向高速分散罐中缓慢添加填料,填料分两次投料,间隔10-20分钟,投料完毕后,高速分散30-60分钟;
步骤S3:缓慢添加吸墨材料,高速分散60-90分钟,直至分散均匀;
步骤S4:缓慢添加粘性树脂、润滑材料与助剂,中速搅拌10-30分钟。
进一步的,在上述热升华转印纸涂层的制备方法中,步骤S1中低速搅拌转速不低于500r/min;步骤S2中高速分散转速不低于1200r/min;步骤S3中高速分散转速不低于1200r/min;步骤S4中中速搅拌转速不低于500r/min;
第三方面,本发明提供将上述热升华转印纸涂层在制备热升华转印纸中的应用。
本发明提供一种热升华转印纸,所述热升华转印纸包括原纸层和上述的热升华转印纸涂层。
进一步的,在上述热升华转印纸中,还包括阻隔层,所述阻隔层位于原纸层和热升华转印纸涂层之间;所述阻隔层原料包括淀粉胶、聚乙烯醇、烷基乙烯酮二聚体、硅酮结构胶、聚酰胺聚脲树脂、脲醛树脂中的一种或多种。
优选的,在上述热升华转印纸中,按质量份计,所述阻隔层原料为70~95的份淀粉胶和5~30份聚乙烯醇。
进一步的,在上述热升华转印纸中,所述阻隔层通过表面施胶方式至原纸的表面;所述热升华转印纸涂层以造纸机内的涂布机构涂布方式涂覆于阻隔层上方。
本发明的有益效果为:
(一)本发明提供的热升华转印纸涂层,防止了涂层水分下渗至原纸层,使涂层水分短暂时间内停留在表面,更易烘干水分,提高干燥速度,进一步的增加了生产车速,能够适用不低于500m/min的车速进行机内一次成型的高速生产。
(二)本发明提供的热升华转印纸涂层中含有稳定材料使涂料稳定性更佳,不易聚集形成杂质颗粒;润滑材料具有良好的润滑效果,使涂料在运行过程中,不易粘附在涂布辊面,减少了料块杂质的集聚,解决了由涂料杂质引起的涂布刮痕与涂料杂质的粘附;同时使得涂料的涂布更均匀,防止局部定量偏高。
(三)本发明的热升华转印纸涂层原料之间具有协同作用,所选用的稳定材料带负电荷,与润滑材料表层形成包裹,二者之间发生物理络合作用,进一步增加润滑材料的疏水性能,从而减少了墨水的渗透、毛边和图像重影问题,提高了图像的精度。
(四)本发明的热升华转印纸涂层还兼具润滑的涂布机构的作用,延长了机内涂布机构的使用寿命。
(五)本发明的热升华转印纸包括阻隔层和热升华转印纸涂层,阻隔层原料和热升华转印纸涂层原料之间相互作用,进一步避免了打印过程中由于墨水的下渗而造成的毛边、渗透现象,提高了图像的精度。
附图说明
图1为本发明的热升华转印纸涂层涂覆在阻隔层的结构示意图;
图2本发明的热升华转印纸涂层直接涂覆在原纸层的结构示意图;
图3是本发明实施例2、对比例1和对比例4打印纸重影对比图;
图4是本发明实施例2、对比例1和对比例4打印纸纸面杂质对比图;
图5是本发明实施例2、对比例1和对比例4打印纸打印虚花对比图;
图6是本发明实施例2、对比例1和对比例4打印纸打印精度对比图。
具体实施方式
为使本发明的目的、技术方案和优点更加清楚,下面将结合本发明实施例,对本发明的技术方案作进一步清楚、完整地描述。需要说明的是,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。
在本发明的描述中,需要说明的是,实施例中未注明具体条件者,按照常规条件或制造商建议的条件进行。所用试剂或仪器未注明生产厂商者,均为可以通过市售购买获得的常规产品。
实施例1
一种热升华转印纸涂层,按质量份计,热升华转印纸涂层原料包括吸墨材料32份、填料61份、稳定材料2份、润滑材料4份和助剂1份。所述吸墨材料为羧甲基纤维素钠;所述填料为煅烧高岭土、轻质碳酸钙与氧化淀粉的混合物;所述稳定材料为重均分子量2000的聚丙烯酸钠,所述润滑材料为硬脂酸钙;所述助剂为杀菌剂、消泡剂和分散剂的混合物。
所述热升华转印纸涂层的制备方法包括以下步骤:
步骤S1:将水与稳定材料置于高速分散罐中,低速搅拌10分钟;
步骤S2:向高速分散罐中缓慢添加填料,填料分两次投料,间隔10分钟,投料完毕后,高速分散30分钟;
步骤S3:缓慢添加吸墨材料,高速分散60分钟,直至分散均匀;
步骤S4:缓慢添加粘性树脂、润滑材料与助剂,中速搅拌10分钟。
实施例2
如图1所示,一种热升华转印纸,包括原纸层、阻隔层和实施例1的热升华转印纸涂层。所述阻隔层位于原纸层和热升华转印纸涂层之间;按质量份计,所述阻隔层原料为80份淀粉胶和20份聚乙烯醇。
热升华转印纸制备方法为:
步骤1、分别配制阻隔层原料和热升华转印纸涂层原料;其中阻隔层原料的固含量为13%,粘度为40mpa.s;热升华转印纸涂层原料的固含量为31%,粘度为1300mpa.s。
步骤2:将原纸层浆料经过流浆箱、成型网、刮水板及压榨部脱水成型后,经杨克缸修饰得到未施胶的原纸;
步骤3:在高速纸机内以辊式施胶的方式将阻隔层涂料涂覆到步骤2制备的原纸层的上方;施胶量为1.0g/m2。
步骤4:在高速纸机内以机内涂布的方式将热升华转印纸涂层原料涂布在步骤3制备的阻隔层上方;涂覆量为5g/m2。
步骤5:对步骤4得到的产品在高速纸机内进行干燥、压光、收卷;高速纸机外分切、复卷、包装;高速纸机的车速为500m/min以上;即得。
实施例3
如图2所示,一种热升华转印纸,包括原纸层和热升华转印纸涂层。按质量份计,热升华转印纸涂层原料包括吸墨材料15份、填料70份、稳定材料2份、润滑材料8份、粘性树脂5份和助剂2份。所述吸墨材料为羧甲基纤维素钠;所述填料为煅烧高岭土、轻质碳酸钙与氧化淀粉的混合物;所述稳定材料为重均分子量1000的聚丙烯酸钠;所述润滑材料为硬脂酸钙、所述粘性树脂为丁苯胶乳;所述助剂为杀菌剂、消泡剂和分散剂的混合物。热升华转印纸涂层制备方法同实施例1。
热升华转印纸制备方法为:
步骤1、配制热升华转印纸涂层原料;热升华转印纸涂层原料的固含量为40%,粘度为1500mpa.s。
步骤2:将原纸层浆料经过流浆箱、成型网、刮水板及压榨部脱水成型后,经杨克缸修饰得到未施胶的原纸;
步骤3:在高速纸机内以机内涂布的方式将热升华转印纸涂层原料涂布在步骤2制备的原纸层上方;涂覆量为6g/m2。
步骤4:对步骤3得到的产品在高速纸机内进行干燥、压光、收卷;高速纸机外分切、复卷、包装;高速纸机的车速为500m/min以上;即得。
实施例4
一种热升华转印纸,结构与制备方法同实施例2。热升华转印纸涂层的原料与实施例2不同。本实施例中,按质量份计,热升华转印纸涂层原料包括吸墨材料24份、填料70份、稳定材料3份、润滑材料4份、粘性树脂1份和助剂1份。所述吸墨材料为羧甲基纤维素钠;所述填料为煅烧高岭土、轻质碳酸钙与氧化淀粉的混合物;所述稳定材料为重均分子量3000的聚丙烯酸钠,所述润滑材料为硬脂酸钙;所述粘性树脂为丁苯胶乳;所述助剂为杀菌剂、消泡剂和分散剂的混合物。热升华转印纸涂层制备方法同实施例1。
实施例5
一种热升华转印纸,结构与制备方法同实施例2。热升华转印纸涂层的原料与实施例2不同。本实施例中,按质量份计,热升华转印纸涂层原料包括吸墨材料32份、填料61份、稳定材料2份、润滑材料4份和助剂1份。所述吸墨材料为羧甲基纤维素钠;所述填料为煅烧高岭土、轻质碳酸钙与氧化淀粉的混合物;所述稳定材料为三(2-乙基己基)磷酸,所述润滑材料为硬脂酸钙;所述助剂为杀菌剂、消泡剂和分散剂的混合物。热升华转印纸涂层制备方法同实施例1。
实施例6
一种热升华转印纸,结构与制备方法同实施例2。热升华转印纸涂层的原料与实施例2不同。本实施例中,按质量份计,热升华转印纸涂层原料包括吸墨材料32份、填料61份、稳定材料2份、润滑材料4份和助剂1份。所述吸墨材料为羧甲基纤维素钠;所述填料为煅烧高岭土、轻质碳酸钙与氧化淀粉的混合物;所述稳定材料为十二烷基硫酸钠,所述润滑材料为硬脂酸钙;所述助剂为杀菌剂、消泡剂和分散剂的混合物。热升华转印纸涂层制备方法同实施例1。
对比例1
一种热升华转印纸,结构与制备方法同实施例2。热升华转印纸涂层的原料与实施例2不同。本对比例中热升华转印纸涂层原料中不包含稳定材料和润滑材料,热升华转印纸涂层其他原料组分以及含量与实施例2相同。
对比例2
一种热升华转印纸,结构与制备方法同实施例2。热升华转印纸涂层的原料与实施例2不同。本对比例中热升华转印纸涂层原料中不包含润滑材料,其他原料组分以及含量与实施例2相同。
对比例3
一种热升华转印纸,结构与制备方法同实施例2。热升华转印纸涂层的原料与实施例2不同。本对比例中热升华转印纸涂层原料中不包含稳定材料,其他原料组分以及含量与实施例2相同。
对比例4
市售的常规的机内一次成型生产的热升华转印纸。(购自广东冠豪高新技术有限公司35g热升华转印纸)
数据对比
将实施例2~6、对比例1~3制备的热升华打印纸以及市售常规的热升华转印纸分别进行纸张的重影情况、纸面杂质粒、打印虚花以及打印精度方面进行对比,数据如表1所示。其中实施例2和对比例1、对比例4的对比图如图3~6所示。图3~6中,a为实施例2转印纸,b为对比例1转印纸。c为对比例4转印纸。
表1、转印纸的检测
由表1可知,本申请热升华转印纸涂层的原料中添加稳定材料与润滑材料时,二者之间发生物理络合,产生协同作用,增加了润滑材料的疏水特性,减少了墨水的渗透、毛边以及图像重影问题,提高了图像的精度;同时稳定材料改善了涂料在运行过程中的粘度、粒径的稳定性能,防止涂料聚集而形成杂质颗粒造成涂布刮痕;润滑材料通过以及润滑材料使涂料不易粘附在涂布辊面防止了涂布过程中形成涂布刮痕,且由于其疏水性能增加了设计车速,润滑了涂布机构,使其更加适用于机内高速生产。
以上所述实施例仅表达了本发明的几种实施方式,其描述较为具体和详细,但并不能因此而理解为对本发明专利范围的限制。应当指出的是,对于本领域的普通技术人员来说,在不脱离本发明构思的前提下,还可以做出若干变形和改进,这些都属于本发明的保护范围。因此,本发明专利的保护范围应以所附权利要求为准。
Claims (10)
1.一种热升华转印纸涂层,其特征在于,按质量份计,所述热升华转印纸涂层的原料包括10~80份的吸墨材料、20~80份填料、1~5份的稳定材料、1~10份的润滑材料和1~2份的助剂;所述润滑材料为硬脂酸锌、硬脂酸钙、硬脂酸酰胺、油酸酰胺、乙撑双硬脂酸酰胺、石蜡中的一种或多种;所述稳定材料为三(2-乙基己基)磷酸、十二烷基硫酸钠、甲基戊醇、古尔胶、脂肪酸聚乙二醇酯、聚丙烯酸钠中的一种或多种;
所述涂层能够适用不低于500m/min的车速进行机内一次成型的高速生产。
2.一种热升华转印纸涂层,其特征在于,按质量份计,所述热升华转印纸涂层的原料包括10~80份的吸墨材料、20~80份填料、1~5份的稳定材料、1~10份的润滑材料和1~2份的助剂;
所述润滑材料为硬脂酸锌、硬脂酸钙、硬脂酸酰胺中的一种或多种;
所述稳定材料为三(2-乙基己基)磷酸、十二烷基硫酸钠、聚丙烯酸钠中的一种或多种;
所述吸墨材料为羧甲基纤维素钠、聚丙烯酰胺、羟丙基纤维素中的一种或多种;
所述填料为煅烧高岭土、轻质碳酸钙、二氧化钛、氧化淀粉、燕麦原淀粉、酯化淀粉的一种或多种。
3.根据权利要求1或2所述的热升华转印纸涂层,其特征在于,所述吸墨材料为羧甲基纤维素钠、聚丙烯酰胺中的一种。
4.根据权利要求1或2所述的热升华转印纸涂层,其特征在于,所述助剂包括杀菌剂、消泡剂、流平剂。
5.根据权利要求1或2所述的热升华转印纸涂层,其特征在于,所述热升华转印纸涂层的涂布量为3~6gsm。
6.根据权利要求1或2所述的热升华转印纸涂层,其特征在于,所述热升华转印纸涂层还包括按质量份计的0.1~10份的粘性树脂。
7.权利要求1~6任意一项所述热升华转印纸涂层的制备方法,其特征在于,包括以下步骤:
步骤S1:将水与稳定材料置于高速分散罐中,低速搅拌10-20分钟;
步骤S2:向高速分散罐中缓慢添加填料,填料分两次投料,间隔10-20分钟,投料完毕后,高速分散30-60分钟;
步骤S3:缓慢添加吸墨材料,高速分散60-90分钟,直至分散均匀;
步骤S4:缓慢添加粘性树脂、润滑材料与助剂,中速搅拌10-30分钟。
8.权利要求1~6任意一项所述热升华转印纸涂层在制备热升华转印纸中的应用。
9.一种热升华转印纸,其特征在于,包括原纸层和权利要求1~6任意一项所述的热升华转印纸涂层。
10.根据权利要求9所述的热升华转印纸,其特征在于,还包括阻隔层,所述阻隔层位于原纸层和热升华转印纸涂层之间;所述阻隔层原料包括淀粉胶、聚乙烯醇、烷基乙烯酮二聚体、硅酮结构胶、聚酰胺聚脲树脂、脲醛树脂中的一种或多种。
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