CN114539937A - 一种牛皮纸胶带及其制备方法 - Google Patents
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Abstract
本发明公开了一种牛皮纸胶带,基材结构如下,离型层、淋膜层、原纸层和胶黏剂层;本发明专利通过在牛皮原料中添加纳米碳酸钙和纳米颗粒,利用纳米颗粒和纳米颗粒,通过颗粒填补牛皮纸内部组织孔隙和表面凹凸不平处,使得牛皮纸的表面能够更加平滑细腻,从而时牛皮纸在进行印刷,其表面不会因为粗糙出现印刷不均、掉分和脱粉现象,通过在牛皮纸内壁添加纯棉纤维,利用纯棉纤维对电的超快释放性能,能够极大的降低牛皮纸摩擦所产生的静电,从而避免牛皮纸印刷过程会出现吸附纸毛、灰尘和互相排出等状况,进而有利于进而有效的提高了牛皮纸在印刷时的印刷质量。
Description
技术领域
本发明涉及牛皮纸胶带技术领域,具体为一种牛皮纸胶带及其制备方法。
背景技术
牛皮纸胶带以牛皮纸为基材,单面淋膜涂离型或无淋膜直接填缝防粘处理,背面涂上油胶或热熔胶制作而成。具有防水、粘性强、抗拉强度高、保持力好、不翘边、环保无污染、可回收再利用等优点。牛皮纸胶带主要用于工业方面,如纸箱印字的屏蔽、服装表面的处理、轻重物体的包装等。牛皮纸胶带分为自粘性牛皮纸胶带和湿水性牛皮纸胶带。
自粘性牛皮纸胶带是以淋膜牛皮纸为基材,涂以丙烯酸胶或天然橡胶胶水制成,具有防水、粘性强、抗拉强度高、保持力好、不翘边、耐候性能稳定等优点。
湿水性牛皮纸胶带是以牛皮纸原纸为基材,涂可食用植物淀粉胶粘制成,过水后产生粘性,具有环保无污染,可回收再生资源,防拆箱,高粘性不起翘,保质期久,保证不受潮的情况下粘性长期有效。
然而上述的两者牛皮纸胶带无论是哪一种,在印刷过程中都会出现一下问题:
第一,牛皮纸制备完成后,牛皮纸内部之间的纤维组织之间结合后,因为组织粗细大小程度不一,会造成牛皮纸表面粗糙不够平滑细腻,在印刷过程极易出现油墨印刷不均匀、上翘下扒、掉毛、脱粉现象;
第二,牛皮纸在印刷过程中,在印刷机输纸带与压纸轮的摩擦作用下向前输送,纸与机器之间,始终处于摩擦状态,而随着摩擦会产生电荷,当电荷聚集时,牛皮纸就带有电荷,牛皮纸带有同种极性电荷时,牛皮纸之间会互相排斥,造成印刷时套印不准与收纸不齐,且带有静电的纸张表面也容易吸附纸毛和灰尘,导致印品图像发花或出现斑点等现象。
为此提出一种牛皮纸胶带及其制备方法,来解决此问题。
发明内容
本发明的目的在于提供一种牛皮纸胶带及其制备方法,解决了目前牛皮纸胶带在印刷时因为表面粗糙易出现油墨印刷不均匀和在印刷过程会产生静电的问题。
为实现上述目的,本发明提供如下技术方案:一种牛皮纸胶带,基材结构如下:
离型层、淋膜层、原纸层和胶黏剂层。
优选的,所述离型层具体为硅油。
优选的,所述淋膜层具体为PE塑料粒子。
优选的,所述原纸层具体为牛皮纸。
优选的,所述胶黏剂层具体为热熔胶。
优选的,所述离型层、淋膜层、原纸层和胶黏剂层由上至下依次设置。
一种牛皮纸胶带及其制备方法,包括以下步骤:
步骤1:材料准备:根据比例需求准备好需要的硅油、PE塑料粒子、热熔胶和用于制备牛皮纸的木材纤维40%、胶料5%、填料5%、染料5%、分散剂5%、纯棉纤维20%、纳米碳酸钙10%和纳米颗粒10%。
步骤2:牛皮纸制备:根据制备比例需求,将准备好的木材纤维、胶料、填料、染料、分散剂、纯棉纤维、纳米碳酸钙和纳米颗粒,将木材纤维和纯棉纤维经过化学方法制浆,木材纤维制浆后加入打浆机进行打浆,打浆过程中,依次加入胶料、填料、染料、分散剂、纳米碳酸钙和纳米颗粒,使材料充分混合,将全部材料然后通过造纸机抄成纸张形状,并进行干燥和裁切,完成牛皮纸的制备;
步骤3:纸张印刷:将经裁切干燥后的牛皮纸,放入印刷机,根据印刷所需图案进行印刷工作,印刷过程中,牛皮纸内部的纳米颗粒能够有效的填补牛皮纸内部限位组织之间凹凸不同的空间,从而使牛皮纸表面更加光滑,印刷图案成型更加清晰,并且牛皮纸内部纯棉纤维,能够在印刷过程中将产生的静电进行快速释放,从而使牛皮纸印刷过程,静电不会吸附空气中的异物,从而避免会出现印品图像发花或出现斑点等现象;
步骤4:牛皮纸淋膜:将PE塑料粒子通过流延机涂覆在经过印刷后的牛皮纸的上表面,并进行干燥,使牛皮纸表面形成淋膜层;
步骤5:硅油涂抹:牛皮纸经过淋膜干燥后,通过涂布机将硅油涂布于淋膜层的上表面,并进行干燥,使其形成离型层;
步骤6:胶水涂覆:通过胶水涂覆装置在牛皮纸的下面涂覆热熔胶,之后进行干燥,干燥后对牛皮纸进行收卷,最后收卷裁断完成牛皮纸胶带的制备。
优选的,所述在步骤2中,纳米碳酸钙和纳米颗粒在打浆过程,充分的和浆料混合,在浆料进行制纸时,能够有效的填补牛皮纸内部纤维之间凹凸不平的位置,从而使纸张平滑细腻,并且还能够增强纸张的光泽和韧性。
优选的,所述在步骤2中,牛皮纸制备后的干燥时间为1min或2min,干燥温度为90℃-120℃之间。
优选的,所述在步骤3中,若是胶带不需要进行图案或LOGO的印刷则直接跳过该步骤,进入下一步骤。
与现有技术相比,本发明的有益效果是:
本发明专利通过在牛皮原料中添加纳米碳酸钙和纳米颗粒,利用纳米颗粒和纳米颗粒,通过颗粒填补牛皮纸内部组织孔隙和表面凹凸不平处,使得牛皮纸的表面能够更加平滑细腻,从而时牛皮纸在进行印刷,其表面不会因为粗糙出现印刷不均、掉分和脱粉现象,通过在牛皮纸内壁添加纯棉纤维,利用纯棉纤维对电的超快释放性能,能够极大的降低牛皮纸摩擦所产生的静电,从而避免牛皮纸印刷过程会出现吸附纸毛、灰尘和互相排出等状况,进而有利于进而有效的提高了牛皮纸在印刷时的印刷质量。
附图说明
图1为本发明结构示意图;
图2为本发明工艺流程示意图。
图中:1、离型层;2、淋膜层;3、原纸层;4、胶黏剂层。
具体实施方式
下面将通过实施例的方式对本发明作更详细的描述,这些实施例仅是举例说明性的而没有任何对本发明范围的限制。
在本发明的一个方面,本发明提供一种技术方案:一种牛皮纸胶带,基材结构如下:
离型层1、淋膜层2、原纸层3和胶黏剂层4。
根据本发明的实施例,所述离型层1具体为硅油,根据本发明的实施例,硅油通常指的是在室温下保持液体状态的线型聚硅氧烷产品,一般分为甲基硅油和改性硅油两类;
最常用的硅油是甲基硅油,也称为普通硅油,其有机基团全部为甲基,甲基硅油具有良好的化学稳定性、绝缘性,疏水性能好;
它是由二甲基二氯硅烷加水水解制得初缩聚环体,环体经裂解、精馏制得低环体,然后把环体、封头剂、催化剂放在一起调聚就可得到各种不同聚合度的混合物,经减压蒸馏除去低沸物就可制得硅油;
硅油一般是无色或淡黄色、无味、无毒、不易挥发的液体;
硅油具有耐热性、电绝缘性、耐候性、疏水性、生理惰性和较小的表面张力,此外还具有低的粘温系数、较高的抗压缩性、有的品种还具有耐辐射的性能;
硅油的应用范围非常广泛,它不仅作为航空、尖端技术、军事技术部门的特种材料使用,而且也用于国民经济各部门,其应用范围已扩大到:建筑、电子电气、纺织、汽车、机械、皮革造纸、化工轻工、金属和油漆、医药医疗等等;
它是一种无毒而且起泡性低,抗泡性强的油;
总之利用硅油作为离型层1使用,能够有效的起到降低牛皮纸离型力的功能,并能够对牛皮纸起到一定防护作用。
根据本发明的实施例,所述淋膜层2具体为PE塑料粒子,根据本发明的实施例,PE(聚乙烯)塑料粒子,未着色时呈乳白色半透明,蜡状;
用手摸有滑腻的感觉,柔而韧,稍能拉长,一般低密度聚乙烯较软;
在工业上,也包括乙烯与少量α-烯烃的共聚物,聚乙烯无臭,无毒,手感似蜡,具有优良的耐低温性能最低使用温度可达-100~-70℃,化学稳定性好,能耐大多数酸碱的侵蚀不耐具有氧化性质的酸,常温下不溶于一般溶剂,吸水性小,电绝缘性优良;
主要有高压管式法和釜式法两种。为降低反应温度和压力,管式法工艺普遍采用低温高活性引剂引发聚合体系,以高纯度乙烯为主要原料,以丙烯、丙烷等为密度调整剂,使用高活性引发剂在约200℃~330℃、150~300MPa条件下进行聚合反应。反应器中引发聚合的熔融聚合物,必须要经过高压、中压和低压冷却、分离,高压循环气体经过冷却、分离后送入超高压300MPa压缩机入口,中压循环气体经过冷却、分离后送入高压30MPa压缩机入口,而低压循环气体经过冷却、分离后送入低压0.5MPa压缩机循环利用,而熔融聚乙烯经过高压、低压分离后送入造粒机,进行水中切粒,在造粒时,企业可以根据不同应用领域,加入适宜的添加剂,颗粒经包装出厂;
PE塑料粒子主要用作农膜、工业用包装膜、药品与食品包装薄膜、机械零件、日用品、建筑材料、电线、电缆绝缘、涂层和合成纸等;
聚乙烯树脂为无毒、无味的白色粉末或颗粒,聚乙烯膜的透水率低但透气性较大,不适于保鲜包装而适于防潮包装,易燃、氧指数为17.4,燃烧时低烟,有少量熔融落滴,火焰上黄下蓝,有石蜡气味,聚乙烯的耐水性较好,制品表面无极性;
总之采用PE塑料粒子作为淋膜层2能够有效的增加牛皮纸的防水,防油效果。
根据本发明的实施例,所述原纸层3具体为牛皮纸,根据本发明的实施例,牛皮纸,用作包装材料,强度很高,通常呈黄褐色,半漂或全漂的牛皮纸浆呈淡褐色、奶油色或白色,定量80~120g/m2,裂断长一般在6000m以上,抗撕裂强度、破裂功和动态强度很高,多为卷筒纸,也有平板纸,采用硫酸盐针叶木浆为原料,经打浆,在长网造纸机上抄造而成,可用作水泥袋纸、信封纸、胶封纸装、沥青纸、电缆防护纸、绝缘纸等。
根据本发明的实施例,所述胶黏剂层4具体为热熔胶,根据本发明的实施例,热熔胶是一种可塑性的粘合剂,在一定温度范围内其物理状态随温度改变而改变,而化学特性不变,其无毒无味,属环保型化学产品;
因其产品本身系固体,便于包装、运输、存储、无溶剂、无污染、无毒型,以及生产工艺简单,高附加值,黏合强度大、速度快等优点而备受青睐;
EVA热熔胶是一种不需溶剂、不含水分100%的固体可熔性聚合物;它在常温下为固体,加热熔融到一定温度变为能流动,且有一定粘性的液体。熔融后的EVA热熔胶,呈浅棕色或白色,EVA热熔胶由基本树脂、增粘剂、粘度调节剂和抗氧剂等成分组成;
总之使用热熔胶作为胶粘剂层能够使牛皮纸具有高粘性、初粘性好、保持力佳、防水防潮、快速粘贴固定等优点;
而热熔胶的内部还含有白油,白油无色、无味,无毒,还具有防油斑作用,不迁移到牛皮纸表面,牛皮纸表面不产生油斑。
根据本发明的实施例,所述离型层1、淋膜层2、原纸层3和胶黏剂层4由上至下依次设置,根据本发明的实施例,由上至下依次设置离型层1、淋膜层2、原纸层3和胶黏剂层4,保证胶带完成制备的情况下,使该胶带能够同时具备防潮、防水、防静电和防油斑等优点。
制备的方法
在本发明的第二方面,本发明提供一种制备前面所描述的牛皮纸胶带的方法,该方法包括:首先材料准备,根据比例需求准备好需要的硅油、PE塑料粒子、热熔胶和用于制备牛皮纸的木材纤维40%、胶料5%、填料5%、染料5%、分散剂5%、纯棉纤维20%、纳米碳酸钙10%和纳米颗粒10%,然后进行牛皮纸制备,根据制备比例需求,将准备好的木材纤维、胶料、填料、染料、分散剂、纯棉纤维、纳米碳酸钙和纳米颗粒,将木材纤维和纯棉纤维经过化学方法制浆,木材纤维制浆后加入打浆机进行打浆,打浆过程中,依次加入胶料、填料、染料、分散剂、纳米碳酸钙和纳米颗粒,使材料充分混合,将全部材料然后通过造纸机抄成纸张形状,并进行干燥和裁切,完成牛皮纸的制备,之后进行纸张印刷,将经裁切干燥后的牛皮纸,放入印刷机,根据印刷所需图案进行印刷工作,印刷过程中,牛皮纸内部的纳米颗粒能够有效的填补牛皮纸内部限位组织之间凹凸不同的空间,从而使牛皮纸表面更加光滑,印刷图案成型更加清晰,并且牛皮纸内部纯棉纤维,能够在印刷过程中将产生的静电进行快速释放,从而使牛皮纸印刷过程,静电不会吸附空气中的异物,从而避免会出现印品图像发花或出现斑点等现象,再之后对牛皮纸淋膜,将PE塑料粒子通过流延机涂覆在经过印刷后的牛皮纸的上表面,并进行干燥,使牛皮纸表面形成淋膜层2,随后进行硅油涂抹,牛皮纸经过淋膜干燥后,通过涂布机将硅油涂布于淋膜层2的上表面,并进行干燥,使其形成离型层1,最后胶水涂覆,通过胶水涂覆装置在牛皮纸的下面涂覆热熔胶,之后进行干燥,干燥后对牛皮纸进行收卷,最后收卷裁断完成牛皮纸胶带的制备。先进行材料准备,是为了方便后续不同的工序对不同的材料进行快速使用;牛皮纸制备,是为了形成新的牛皮纸,从而克服传统牛皮纸所存在的不足之处;对纸张印刷是为了能使胶带表面形成特殊的图案或LOGO;对牛皮纸淋膜是为了使牛皮纸具有防水和防油效果,硅油涂抹,是降低牛皮纸所存在的离型力,胶水涂覆,是为了对胶带的制备完成做下一步准备,使牛皮纸具有粘接性能,并且也方便将牛皮纸进行收卷入库,由此通过在牛皮原料中添加纳米碳酸钙和纳米颗粒,利用纳米颗粒和纳米颗粒,通过颗粒填补牛皮纸内部组织孔隙和表面凹凸不平处,使得牛皮纸的表面能够更加平滑细腻,从而时牛皮纸在进行印刷,其表面不会因为粗糙出现印刷不均、掉分和脱粉现象,通过在牛皮纸内壁添加纯棉纤维,利用纯棉纤维对电的超快释放性能,能够极大的降低牛皮纸摩擦所产生的静电,从而避免牛皮纸印刷过程会出现吸附纸毛、灰尘和互相排出等状况,进而有利于进而有效的提高了牛皮纸在印刷时的印刷质量。
根据本发明的实施例,纳米碳酸钙和纳米颗粒在打浆过程,充分的和浆料混合,在浆料进行制纸时,能够有效的填补牛皮纸内部纤维之间凹凸不平的位置,从而使纸张平滑细腻,并且还能够增强纸张的光泽和韧性,根据本发明的实施例,牛皮纸平滑细腻后,能够保证在后续的印刷中,印刷油墨能均匀的分布到牛皮纸的表面,从而使牛皮纸能够满足更加细腻的印刷需求,从而在提高印刷质量的前提下,也提高了牛皮纸自身的质量。
根据本发明的实施例,牛皮纸制备后的干燥时间为1min或2min,干燥温度为90℃-120℃之间,根据本发明的实施例,牛皮纸干燥,是为了方便后续对牛皮纸进行其他加工,在90℃-120℃之间的温度下,干燥1min或2min,能够脱去牛皮纸所存在的水份,并能够满足后续工序对牛皮纸的干燥度需求。
根据本发明的实施例,若是胶带不需要进行图案或LOGO的印刷则直接跳过该步骤,进入下一步骤,根据本发明的实施例,牛皮纸胶带的印刷是可选择的步骤,根据客户需求,能够在胶带上印刷不同的图案和LOGO能满足不同客户对牛皮纸胶带的使用需求。
Claims (10)
1.一种牛皮纸胶带,其特征在于:基材结构如下:
离型层(1)、淋膜层(2)、原纸层(3)和胶黏剂层(4)。
2.根据权利要求1所述的一种牛皮纸胶带,其特征在于:所述离型层(1)具体为硅油。
3.根据权利要求1所述的一种牛皮纸胶带,其特征在于:所述淋膜层(2)具体为PE塑料粒子。
4.根据权利要求1所述的一种牛皮纸胶带,其特征在于:所述原纸层(3)具体为牛皮纸。
5.根据权利要求1所述的一种牛皮纸胶带,其特征在于:所述胶黏剂层(4)具体为热熔胶。
6.根据权利要求1所述的一种牛皮纸胶带,其特征在于:所述离型层(1)、淋膜层(2)、原纸层(3)和胶黏剂层(4)由上至下依次设置。
7.一种牛皮纸胶带及其制备方法,根据权利要求1~6任一项,其特征在于:包括以下步骤:
步骤1:材料准备:根据比例需求准备好需要的硅油、PE塑料粒子、热熔胶和用于制备牛皮纸的木材纤维40%、胶料5%、填料5%、染料5%、分散剂5%、纯棉纤维20%、纳米碳酸钙10%和纳米颗粒10%。
步骤2:牛皮纸制备:根据制备比例需求,将准备好的木材纤维、胶料、填料、染料、分散剂、纯棉纤维、纳米碳酸钙和纳米颗粒,将木材纤维和纯棉纤维经过化学方法制浆,木材纤维制浆后加入打浆机进行打浆,打浆过程中,依次加入胶料、填料、染料、分散剂、纳米碳酸钙和纳米颗粒,使材料充分混合,将全部材料然后通过造纸机抄成纸张形状,并进行干燥和裁切,完成牛皮纸的制备;
步骤3:纸张印刷:将经裁切干燥后的牛皮纸,放入印刷机,根据印刷所需图案进行印刷工作,印刷过程中,牛皮纸内部的纳米颗粒能够有效的填补牛皮纸内部限位组织之间凹凸不同的空间,从而使牛皮纸表面更加光滑,印刷图案成型更加清晰,并且牛皮纸内部纯棉纤维,能够在印刷过程中将产生的静电进行快速释放,从而使牛皮纸印刷过程,静电不会吸附空气中的异物,从而避免会出现印品图像发花或出现斑点等现象;
步骤4:牛皮纸淋膜:将PE塑料粒子通过流延机涂覆在经过印刷后的牛皮纸的上表面,并进行干燥,使牛皮纸表面形成淋膜层(2);
步骤5:硅油涂抹:牛皮纸经过淋膜干燥后,通过涂布机将硅油涂布于淋膜层(2)的上表面,并进行干燥,使其形成离型层(1);
步骤6:胶水涂覆:通过胶水涂覆装置在牛皮纸的下面涂覆热熔胶,之后进行干燥,干燥后对牛皮纸进行收卷,最后收卷裁断完成牛皮纸胶带的制备。
8.根据权利要求7所述的一种牛皮纸胶带及其制备方法,其特征在于:所述在步骤2中,纳米碳酸钙和纳米颗粒在打浆过程,充分的和浆料混合,在浆料进行制纸时,能够有效的填补牛皮纸内部纤维之间凹凸不平的位置,从而使纸张平滑细腻,并且还能够增强纸张的光泽和韧性。
9.根据权利要求7所述的一种牛皮纸胶带及其制备方法,其特征在于:所述在步骤2中,牛皮纸制备后的干燥时间为1min或2min,干燥温度为90℃-120℃之间。
10.根据权利要求7所述的一种牛皮纸胶带及其制备方法,其特征在于:所述在步骤3中,若是胶带不需要进行图案或LOGO的印刷则直接跳过该步骤,进入下一步骤。
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