防偽纖維

防偽短纖維長度1-10毫米，直徑20-100微米。目前，螢光纖維作為一種最基本的防偽材料，幾乎在世界各國的所有紙幣、護照、郵票、有價證券以及各類防偽紙中廣泛採用並獲得認同，目前國內的煙包行業也採用了該項防偽技術，套用範圍廣泛，且數十年均沒有改變。螢光防偽纖維又稱為安全纖維，它根據發射波長的不同分長波長、短波長等品種。螢光防偽纖維目前國內外研究比較少，只有少數國家公開過類似的專利或其他文獻。而雙波長螢光防偽纖維的研製幾乎還處於空白。這種纖維具有兩種螢光光譜，在不同波長的特殊光線照射下呈現不同的顏色，起到防偽作用，是普通防偽纖維的升級換代產品。預計未來幾年防偽纖維需求量將出現增長態勢。

基本介紹

• 中文名：防偽纖維
• 外文名：Anti fake fiber

基本介紹

，具體分為三大類：
（1）可見短纖維：又稱有色短纖維，自然光下可見，顏色隨意；
（2）不可見短纖維：又稱隱形短纖維、螢光短纖維，紫外燈照射下發出各色螢光；
（3）色譜短纖維、複合短纖維、異形短纖維、多色段DNA色譜防偽短纖維：在一根纖維上複合多種防偽功能，可根據客戶需要定製顏色組合、色段長度、纖維形狀。

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.

用途

紙張是印刷各種包裝的物質基礎，一些採用特殊工藝製造的專用紙具有防偽特點，在專用紙張中採用的防偽技術之一就是防偽短纖維。防偽短纖維的使用方法有兩種，一是在造紙過程中將紅、藍、綠、棕色等彩色短纖維、各種螢光短纖維摻入紙漿內，二是在紙張未定型前或塗布膠水後將防偽短纖維撒在紙張表面，在自然光或紫外燈照射下即有不同效果色光或螢光反射。

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.

分類

普通彩色短纖維

該纖維可用來製作防偽紙張。該纖維是有顏色的（紅、藍、綠等），混入紙漿抄紙後，自然光下觀察，彩色纖維隨機分布在紙張中，用針可將纖維挑出。

Colored security fiber: The colored (suchas red, green, blue) fibers can be added in the paper pulp to making thesecurity paper. When they are distributed in the paper, and they can be found underthe natural light. The fibers can be extracted from the paper using the needle.

不可見短纖維

該纖維又稱隱形短纖維、螢光短纖維，可用來製作防偽紙張。該纖維在自然光下為近白色，混入紙漿抄紙後，自然光下纖維不可見，用紫外燈照射，可見隨機分布在紙張中的纖維發出螢光（紅、藍、綠等），用針可將纖維挑出。

Invisible fluorescent security fiber (alsocalled colorless UV fluorescent security fiber): The fibers can be added in thepaper pulp to making the security paper. They are colorless(white) under thenatural light, when they are distributed in the white paper, they are invisibleunder the natural light, but they can fluoresce(such as red, green, blue) underthe ultraviolet light. The fibers can be extracted from the paper using theneedle.

雙波長螢光短纖維

該纖維可用來製作防偽紙張。該纖維在自然光下為近白色，混入紙漿抄紙後，自然光下纖維不可見，用長波紫外燈照射，可見隨機分布在紙張中的纖維發出一種顏色螢光（比如紅），用短波紫外燈照射，纖維發出另一種顏色螢光（比如綠），用針可將纖維挑出。

Double-wavelength fluorescent securityfiber: The fibers can be added in the paper pulp to making the security paper. Theyare colorless(white) under the natural light, when they are distributed in thewhite paper, they are invisible under the natural light, they can fluoresce(suchas red) under the long-wave ultraviolet light and fluoresce(another color suchas green) under the short-wave ultraviolet light. The fibers can be extracted fromthe paper using the needle.

有色-螢光短纖維

該纖維可用來製作防偽紙張。該纖維是有顏色的，混入紙漿抄紙後，自然光下觀察，彩色纖維隨機分布在紙張中，用紫外燈照射，可見隨機分布在紙張中的纖維發出螢光（紅、藍、綠等），用針可將纖維挑出。

Colored fluorescent security fiber: Thefibers can be added in the paper pulp to making the security paper. When they aredistributed in the paper, they can be found under the natural light, and theycan fluoresce(such as red, green, blue) under the ultraviolet light. The fiberscan be extracted from the paper using the needle.

有色螢光雙波長纖維

該纖維可用來製作防偽紙張。該纖維是有顏色的，混入紙漿抄紙後，自然光下觀察，彩色纖維隨機分布在紙張中，用長波紫外燈照射，可見隨機分布在紙張中的纖維發出一種顏色螢光（比如紅），用短波紫外燈照射，纖維發出另一種顏色螢光（比如綠），用針可將纖維挑出。

Colored Double-wavelength fluorescentsecurity fiber: The fibers can be added in the paper pulp to making thesecurity paper. When they are distributed in the paper, they can be found underthe natural light, they can fluoresce(such as red) under the long-waveultraviolet light and fluoresce(another color such as green) under theshort-wave ultraviolet light. The fibers can be extracted from the paper usingthe needle.

可見單根雙色纖維

該纖維可用來製作防偽紙張。該纖維是有顏色的，混入紙漿抄紙後，自然光下觀察，可見紙中彩色纖維隨機分布，在同一根纖維上有“紅-藍”等兩種顏色色段組合，用針可將纖維挑出。

Bicolor security fiber: The fibers can beadded in the paper pulp to making the security paper. When they are distributedin the paper, and they can be found under the natural light. There are twodifferent colors such as "blue and red" on a fiber, the two colorsare at opposite ends of the fiber. The fibers can be extracted from the paperusing the needle.

不可見單根三色螢光纖維

該纖維可用來製作防偽紙張。該纖維在自然光下為近白色，混入紙漿抄紙後，自然光下纖維不可見，用紫外燈照射，可見隨機分布在紙張中的纖維發出螢光，在同一根纖維上有“紅-藍-綠”等三種螢光色色段組合，用針可將纖維挑出。

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 the long-waveultraviolet light. There are three different colors such as “red, green andblue” on a fiber, the three colors are arranged by the same order. The fibers canbe extracted from the paper using the needle.

單根多色纖維

該纖維又稱色譜纖維、多色段DNA色譜防偽短纖維，如單根雙色纖維、單根三色螢光纖維等，纖維包含多種顏色，不同顏色色段按一定規律間隔排列，每種顏色可以是肉眼可見色，也可以是紫外螢光激發顏色，可按客戶指定的顏色組合定製，使終端產品包裝具有唯一性和不可複製性，達到良好的防偽效果。

該纖維用來製作防偽紙張，可以有效防止造假者用印刷細線的方式仿冒普通有色纖維和單根單色螢光纖維的視覺效果。由於印刷套色很難準確到微米級別，因此造假者無法用印刷細線的方式模仿添加了該種纖維的防偽紙張，解決了單根單色纖維的不足之處。消費者可以用以下兩種方法辨別：

a、撕開紙張或用針挑出纖維直接觀察，每一根纖維上都有多種顏色。b、兩種色段交接處不會產生錯位，若有錯位，可判定為假冒。

Multi-color security fiber: The fibers canbe added in the paper pulp to making the security paper. There are more thanone color or one anti-counterfeit feature on a fiber which can be made bycustomer's order. The colors and their rank is a feature of specificity for theproduct’s packaging which is made by the paper with security fiber.

Some people print short line on the paperto counterfeit the security fiber. But using the following methods, it is easyto differentiate the multi-color security fiber in the paper and the short linewhich is printed on the paper:

a. To tear the paper or to extract thefiber from the paper using the needle, there are two(or more) colors on afiber. b. To watch the connection of the two colors in the short line(or thefiber) on the paper, there is no malposition or breakpoint on the fiber, butthe short line which is printed is different, because the print technologylevel is not enough to make so high accuracy prints.