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| Fiber optic dye amplifier |
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| Battery post clamp |
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Method for marking and fading textiles with lasers
| Details |
Inventors: Lockman, William J.; Clayson, Frank J.;
Assignee: Icon, Inc. (Apopka, FL)
Primary Examiner: Ensman; Margaret
Assistant Examiner:
Attorney, Agent or Firm: Maguire, Voorhis & Wells, P.A.
The present invention relates to an environmentally safe, water-free method for color fading and for producing patterns on textile materials (1, 10) by exposure to laser radiation (7, 12) of sufficient intensity to cause photo-decomposition of the coloring agent while leaving the underlying textile material undamaged. The pre-dyed material (1, 10), such as denim, is scanned by a laser beam (19, 20) generated by a selected laser having selective output characteristics to produce uniform fading and patterns of photo-bleached marks on the textile material (1, 10). When the laser radiation is modulated at a selected frequency, the fading may take the form of stone washing (18a and 18b), echo ball washing, or acid washing techniques commonly used on denim materials. The patterns (17a and 17b) may take the form of any desired image, line, or picture in the substrate material. For mass production the textile materials may be moved under the laser by a conveyer belt or similar means. |
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DETAILED DESCRIPTION The primary object of the present invention is to provide an improved and environmentally safe, water free method for uniformly fading and fading with patterns various textile materials, including finished colored denim, using a laser.
Another object of the present invention is to provide an environmentally safe, water free process for producing stone washing and acid washing effects on various textile materials, including finished colored denim, with lasers.
Another object of the present invention is to provide a method for marking patterns and images on various textile materials, including finished colored denim, using a laser.
Another object of the present invention is to provide such a method that does not damage the textile material on which it is used.
Another object of the present invention is to provide such a method that does not require the use of chemicals or acids.
The present invention fulfills the above and other objects by providing a method for color fading and producing patterns on textile materials with a laser by placing under the laser a pre-dyed textile material and then scanning a laser beam having a selected wavelength, power density, pulse width, and repetition rate over the textile material until the desired degree of fading or the selected pattern is achieved.
The laser would preferably be a q-switched Nd:YAG laser with a wavelength of about 1064 nanometers, although other lasers, such as CO.
sub.
2 gas lasers or Excimer gas lasers may be utilized.
The wavelength of the laser is chosen to give optimal dye photo-decomposition without affecting the textile material.
The scanning of the laser beam over the textile material may be controlled by galvanometric mirror, acousto-optic deflector, deflector, magneto-optic beam deflector, polygon mirror, or a moving holographic optical element.
The textile material may be made of natural, synthetic, woven, knit, or pressed fiber textile materials.
The patterns which would be made of a series of lines and/or dots may take the form of images, text, or pictures on the textile material
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Optical Systems 
