纸张是印刷各种包装的物质基础，一些采用特殊工艺制造的专用纸具有防伪特点，在专用纸张中采用的防伪技术之一就是防伪短纤维。防伪短纤维的使用方法有两种，一是在造纸过程中将红、蓝、绿、棕色等彩色短纤维、各种荧光短纤维掺入纸浆内，二是在纸张未定型前或涂布胶水后将防伪短纤维撒在纸张表面，在自然光或紫外灯照射下即有不同效果色光或荧光反射。

Anti-counterfeit fiber(anti-forgery fiber,anti-clone fiber, authentication fiber, tracing and tracking fiber, anti-theftfiber, traceability fiber, security fiber):

The fiber's length is between 1 millimeterand 10 millimeters, it's diameter is between 20 micrometers and 100micrometers. There are three major types of the fibers: 1, Visible securityfiber (such as red, green, blue, also called visible fiber). 2, Invisiblesecurity fiber (also called colorless UV fluorescent security fiber), it canfluoresce(such as red, green, blue) under the ultraviolet light. 3, Compositefiber: There are more than one anti-counterfeit features on a fiber which canbe made by customer's order.

The paper is usually used to make thepackaging of products. Sometimes the paper of the packaging need to be addedsome anti-counterfeit features. To add the security fiber in the paper pulp isa effective method to make the anti-counterfeit paper, another method is todistribute the fiber on the surface of the paper which is covered by the glue. It is very difficult to counterfeit the packaging which is made by the paperwith security fibers.

Invisible three-color fluorescent securityfiber: The fibers can be added in the paper pulp to making the security paper.They are colorless(white), when they are distributed in the white paper, theyare invisible under the natural light, and they can fluoresce under thelong-wave ultraviolet light. There are three different colors such as “red,green and blue” on a fiber, the three colors are arranged by the same order.The fibers can be extracted from the paper using the needle.

造纸用防伪短纤维长度1-10毫米，直径20-100微米，具体分为三大类：（1）可见短纤维：又称有色短纤维，自然光下可见，颜色随意；（2）不可见短纤维：又称隐形短纤维、荧光短纤维，紫外灯照射下发出各色荧光；（3）色谱短纤维、复合短纤维、异形短纤维、多色段DNA色谱防伪短纤维：在一根纤维上复合多种防伪功能，可根据客户需要定制颜色组合、色段长度、纤维形状。

单根多色防伪纤维又称多色段防伪纤维、色谱防伪纤维、彩虹防伪纤维、断点防伪纤维，包含可见单根双色纤维、单根双色防伪纤维、单根三色防伪纤维、单根双色荧光防伪纤维、单根三色荧光防伪纤维。该纤维是由多种颜色组合的，在同一根纤维上有“红-蓝-绿、荧光红-荧光蓝-荧光绿”等多种颜色色段按规律排列，每种颜色可以是肉眼可见色，也可以是紫外荧光激发颜色等。该纤维用来制作防伪纸张，可以有效防止造假者用印刷细线的方式仿冒普通有色纤维和单根单色荧光纤维的视觉效果。由于印刷套色很难准确到微米级别，因此无法用印刷细线的方式模仿添加了该种纤维的防伪纸张。消费者可以用以下两种方法辨别：a、撕开纸张或用针挑出纤维直接观察，每一根纤维上都有多种颜色。b、两种色段交接处不会产生错位，若有错位，可判定为印刷仿冒。

Multi-color fiber: The fibers are usually used to be mixed in the paper pulp to make the security paper. There are more than one color (or UV excitation color) on a single fiber. The colors and the rank of them constitute a specific character of the fiber which is designed by the customer’s order. Some counterfeiters print many short lines on the paper to counterfeit the single color fiber, but it is easy to differentiate the multi-color security fiber in the paper and the short line printed on the paper by means of the following methods: a. To tear the paper or to extract the fiber from the paper by using the needle, there are two(or more) colors on a fiber. b. To observe the junction of the two adjacent colors in the short line(or on the fiber) on the paper, there is no malposition or breakpoint on the fiber, but the printed short lines are different, because the print technology level is not enough to make so high accuracy prints.

单根多色防伪纤维又称多色段防伪纤维、色谱防伪纤维、彩虹防伪纤维、断点防伪纤维，包含可见单根双色纤维、单根双色防伪纤维、单根三色防伪纤维、单根双色荧光防伪纤维、单根三色荧光防伪纤维。在同一根纤维上有“红-蓝-绿、荧光红-荧光蓝-荧光绿”等多种颜色色段按规律排列，每种颜色可以是肉眼可见色，也可以是紫外荧光激发颜色等。该纤维用来制作防伪纸张，可以有效防止造假者用印刷细线的方式仿冒普通有色纤维和单根单色荧光纤维的视觉效果。由于印刷套色很难准确到微米级别，因此无法用印刷细线的方式模仿添加了该种纤维的防伪纸张。消费者可以用以下两种方法辨别：a、撕开纸张或用针挑出纤维直接观察，每一根纤维上都有多种颜色。b、两种色段交接处不会产生错位，若有错位，可判定为印刷仿冒。

Multi-color fiber: The fibers are usually used to be mixed in the paper pulp to make the security paper. There are more than one color (or UV excitationcolor) on a single fiber. The colorsand the rank of them constitute a specific character of the fiber which is designed by the customer’s order. Some counterfeiters print many short lines on the paper to counterfeit the single color fiber, but it is easy to differentiate the multi-color security fiber in the paper and the short line printed on the paper by means of the following methods: a. To tear the paper or to extract the fiber from the paper by using the needle, there are two(or more) colors on a fiber. b. To observe the junction of thetwo adjacent colors in the short line(or on the fiber) on the paper, there is no malposition or breakpoint on the fiber, but the printed short lines are different, because the print technology level is not enough to make so high accuracy prints.

单根多色防伪纤维又称多色段防伪纤维、色谱防伪纤维、彩虹防伪纤维、断点防伪纤维，包含可见单根双色纤维、单根双色防伪纤维、单根三色防伪纤维、单根双色荧光防伪纤维、单根三色荧光防伪纤维。该纤维是由多种颜色组合的，在同一根纤维上有“红-蓝-绿、荧光红-荧光蓝-荧光绿”等多种颜色色段按规律排列，每种颜色可以是肉眼可见色，也可以是紫外荧光激发颜色等。该纤维用来制作防伪纸张，可以有效防止造假者用印刷细线的方式仿冒普通有色纤维和单根单色荧光纤维的视觉效果。由于印刷套色很难准确到微米级别，因此无法用印刷细线的方式模仿添加了该种纤维的防伪纸张。消费者可以用以下两种方法辨别：a、撕开纸张或用针挑出纤维直接观察，每一根纤维上都有多种颜色。b、两种色段交接处不会产生错位，若有错位，可判定为印刷仿冒。

Multi-color fiber: The fibers are usually used to be mixed in the paper pulp to make the security paper. There are more than one color (or UV excitation color) on a single fiber. The colors and the rank of them constitute a specific character of the fiber which is designed by the customer’s order. Some counterfeiters print many short lines on the