Korea Institute of Industrial Technology

Sung Won Byun

Byeong Jin Yeang

Wan-Gyu Hahm

Seung Jin Lee

Ki Sub Lim

In Woo Nam

Do Gun Kim

Dae Young Lim

Min Sun Kim

The present invention discloses a security yarn containing a multi-composite spinning fiber and security products using the same. The multi-composite spinning fiber, according to the present invention, contains, in at least one or more kinds of polymer materials, a first component selected from an IR reactive pigment or an IR absorption pigment, a second component selected from a visible pigment or an invisible UV-reactive fluorescent pigment, and a third component selected from X-ray absorption materials, so that the security yarn containing the multi-component spinning fiber can be identified by infrared and ultraviolet wavelength and easily identified when irradiated with X-rays, thus providing a multi-identification capability and being useful for preventing counterfeiting. Therefore, the security yarn containing a multi-composite spinning fiber can be useful for preventing the counterfeiting of paper money, gift certificates, marketable securities, and passports or the like, preventing imitations of expensive brand-name products, or identifying a friend or a foe for military purposes.

Security yarn containing multi-component spinning fiber and security product using the same

A method and apparatus for fabricating a conjugate fiber. Resins having different properties, for example, resins of the same or different components including functional pigments or substances are continuously and alternatively discharged in an endless state by operating a spinning nozzle unit in a melting state, thereby fabricating the conjugate fiber having the different properties in the longitudinal direction of the fiber, and having various surface effects and patterns in the longitudinal direction of the fiber. A conjugate fiber fabricated by the above apparatus and method is also provided.

Method and apparatus for fabricating conjugate fiber, and conjugate fiber fabricated thereby

A multiple fiber spinning apparatus and a method of controlling the same. The apparatus includes an extruding unit, a spin block unit and a spinning nozzle unit. The extruding unit includes extruders that melt, extrude and transfer polymer materials. The spin block unit includes a gear pump unit which has gear pumps connected to each of the extruders. The gear pumps receive the polymer materials from the corresponding extruders and discharge the polymer materials. The spin block unit further includes a flow passage unit which has flow passages connected to the respective gear pumps. The spinning nozzle unit includes spinning nozzles, each of which is connected to one of the gear pumps of each extruder by the corresponding flow passage, so that each spinning nozzle receives the molten polymer materials and spins the polymer materials into a fiber.

Multiple fiber spinning apparatus and method for controlling same

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Seoul, South Korea

Sung Won Byun