CN204265905U - 防伪功能聚酯pet超短纤维制备系统 - Google Patents
防伪功能聚酯pet超短纤维制备系统 Download PDFInfo
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Abstract
本实用新型公开了一种防伪功能聚酯PET超短纤维制备系统,包括依次连接的第一加样器、熔融螺杆挤出机、高效静态混合器、计量泵、骤冷风装置、卷绕装置、拉伸装置、纤维表面处理装置、热定型装置、超短纤维切断装置、密封包装装置,第一加样器用于加入聚酯PET切片或熔体,包括第二加样器,第二加样器与纤维表面处理装置连接,熔融螺杆挤出机与高效静态混合器之间通过纺丝熔体管道连接,包括第三加样器,第三加样器与高效静态混合器连接。本实用新型防伪功能聚酯PET超短纤维制备系统可在纺丝熔体管道上直接添加二苯乙烯基双苯并噁唑类有机单体或原液着色剂,使其均匀分散在熔体中。各加样器可单独控制,使整个系统也可用于普通聚酯PET超短纤维的制备。
Description
技术领域
本实用新型涉及防伪功能聚酯PET超短纤维制备系统,属于合成纤维技术领域。
背景技术
目视可见印刷纸张防伪技术和产品从上世纪90年代实现了工业化,采用荧光系列产品,如荧光油墨、荧光纤维是比较常用的方法。荧光油墨在制作中较简单,用于印刷商标,在特定波长的紫外灯照射下,油墨中荧光化合物会闪烁光彩,使用不同颜色的荧光化合物会发出不同颜色的光。但此种方法易仿造。
荧光纤维是近几年发展起来的新型防伪纤维,其制造工艺较为复杂,它是先将荧光化合物与成纤高聚物共混,获得荧光母粒,荧光母粒和高聚物混合,得到荧光混合物,再经纺丝、卷绕、拉伸而得。荧光纤维主要用于防伪证件、票据、商标、服装装饰和其他可识别领域。例如日本、德国用它制造防伪纸,将荧光纤维切成一定长度的超短纤维(几个毫米),将其加入纸张中则可制得防伪纸。纸中的纤维是看不到的,但在紫外线照射下纤维将呈现一种颜色。国内最新版人民币中也有荧光纤维,但上述荧光纤维都为单波长荧光化合物组成。
聚酯纤维具有生产过程相对环保,生产成本低,用于纺织行业具有非常良好的取代天然纤维的功能。而用于湿法造纸行业,纤维的表面需要特殊处理,相对应用领域的使用量较小,传统的聚酯超短纤维生产成本较高(CN 1343810 A,一种防伪纤维及采用该防伪纤维的防伪纸;CN 1405368 A,高效荧光皮芯复合纤维及其制造方法和应用;CN 2499432 Y,一种防伪纤维),用于湿法造纸的分散性不佳,防伪检测特征波段范围相对较宽,仿制的可能性高,同时,此种荧光纤维受到后加工条件和周围环境影响,荧光性能的稳定性较差。
实用新型内容
本实用新型的目的是提供一种防伪功能聚酯PET超短纤维制备系统,用于制备可明显区分于其它天然纤维或人造纤维的聚酯PET超短纤维。
为达到上述目的,本实用新型采用的技术方案为:一种防伪功能聚酯PET超短纤维制备系统,包括依次连接的第一加样器、熔融螺杆挤出机、高效静态混合器、计量泵、骤冷风装置、卷绕装置、拉伸装置、纤维表面处理装置、热定型装置、超短纤维切断装置、密封包装装置,第一加样器用于加入聚酯PET切片或熔体,还包括第二加样器,所述第二加样器与纤维表面处理装置连接,用于加入表面处理剂,熔融螺杆挤出机与高效静态混合器之间通过纺丝熔体管道连接,还包括第三加样器,所述第三加样器与高效静态混合器连接,用于加入二苯乙烯基双苯并噁唑类有机单体。
进一步的,还包括第四加样器,所述第四加样器与高效静态混合器连接,用于加入PET原液着色剂。
本实用新型防伪功能聚酯PET超短纤维制备系统可在纺丝熔体管道上直接添加二苯乙烯基双苯并噁唑类有机单体或原液着色剂,使其均匀分散在熔体中。各加样器可单独控制,使整个系统也可用于普通聚酯PET超短纤维的制备。
附图说明
图1为防伪功能聚酯PET超短纤维制备系统的结构示意图。
下面结合附图对本实用新型的实施方式做进一步说明。
具体实施方式
实施例1
本防伪功能聚酯PET超短纤维制备系统,用于防伪功能聚酯PET超短纤维的制备,包括依次连接的第一加样器1、熔融螺杆挤出机2、高效静态混合器4、计量泵6、骤冷风装置7、卷绕装置8、拉伸装置9、纤维表面处理装置10、热定型装置11、超短纤维切断装置12、密封包装装置13,第一加样器1用于加入聚酯PET切片或熔体,还包括第二加样器14,所述第二加样器14与纤维表面处理装置10连接,用于加入表面处理剂,熔融螺杆挤出机2与高效静态混合器4之间通过纺丝熔体管道连接,还包括第三加样器3和第四加样器5,所述第三加样器3与高效静态混合器4连接,用于加入二苯乙烯基双苯并噁唑类有机单体,所述第四加样器5与高效静态混合器4连接,用于加入PET原液着色剂。
用本防伪功能聚酯PET超短纤维制备系统来制备防伪功能聚酯PET超短纤维的方法,其步骤包括:
1)、聚酯PET切片或熔体通过第一加样器1加入到熔融螺杆挤出机2中,然后进入高效静态混合器4,同时,具有耐高温荧光效果的二苯乙烯基双苯并噁唑作为紫外线吸收剂通过第三加样器3进入高效静态混合器4中,聚酯PET原液着色剂Solvent Blue 104 蓝色通过第四加样器5进入高效静态混合器4中,与聚酯熔体混合;其中二苯乙烯基双苯并噁唑的加入量为聚酯熔体重量的0.010%wt,Solvent Blue 104 蓝色的加入量为聚酯熔体重量的0.001%wt,二苯乙烯基双苯并噁唑的结构式为 。
2)、经过原液着色的含紫外线吸收剂的熔体,通过计量泵6进行熔融纺丝,纺丝温度不大于295℃,通过骤冷风装置7对丝束进行凝固冷却,冷却风的温度控制在24±4℃,成型后的原丝通过卷绕装置8进入拉伸装置9,对纤维进行拉伸,然后进入纤维表面处理装置10,表面处理剂通过第二加样器14进入纤维表面处理装置10,对纤维表面进行亲水化处理; 表面处理剂由长链烷基聚氧乙烯醚硫酸钠(a)、脂肪醇聚氧乙烯醚(b)和脂肪族醇酸合成酯(c)组成,占聚酯熔体重量的0.4%wt;三组分的比例a:b:c分别为40~45:35~40:25:15。
3)、经表面处理的纤维进入热定型装置11进行热定型,压切式的超短纤维切断装置12,对经过热定型的纤维丝束进行切断,切断后的纤维长度为3-8毫米,根据最终使用要求进行调节,切断后的纤维通过密封包装装置13进行密封包装,适用于湿法造纸的超短纤维含水率控制在10±4%之内,与聚烯烃共混用的超短纤维含水率控制在0.45±0.05%。使用氮气或二氧化碳隔氧包装。
Claims (2)
1.一种防伪功能聚酯PET超短纤维制备系统,包括依次连接的第一加样器、熔融螺杆挤出机、高效静态混合器、计量泵、骤冷风装置、卷绕装置、拉伸装置、纤维表面处理装置、热定型装置、超短纤维切断装置、密封包装装置,第一加样器用于加入聚酯PET切片或熔体,还包括第二加样器,所述第二加样器与纤维表面处理装置连接,用于加入表面处理剂,熔融螺杆挤出机与高效静态混合器之间通过纺丝熔体管道连接,其特征在于:还包括第三加样器,所述第三加样器与高效静态混合器连接,用于加入二苯乙烯基双苯并噁唑类有机单体。
2.根据权利要求1所述的防伪功能聚酯PET超短纤维制备系统,其特征在于:还包括第四加样器,所述第四加样器与高效静态混合器连接,用于加入PET原液着色剂。
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