Security Threads
There are two kinds of security threads. One is a thin aluminum coated and partly demetalized polyester film thread with microprinting which is embedded in the security paper as banknote or passport paper.
The other kind of security thread is the single or multicolor sewing thread made from cotton or synthetic fibers, mostly UV fluorescent, for the bookbinding of passport booklets.
Read more about this topic: Security Printing
Famous quotes containing the words security and/or threads:
“The horror of class stratification, racism, and prejudice is that some people begin to believe that the security of their families and communities depends on the oppression of others, that for some to have good lives there must be others whose lives are truncated and brutal.”
—Dorothy Allison (b. 1949)
“The greatest blunders, like the thickest ropes, are often compounded of a multitude of strands. Take the rope apart, separate it into the small threads that compose it, and you can break them one by one. You think, “That is all there was!” But twist them all together and you have something tremendous.”
—Victor Hugo (1802–1885)