Laser Print and Laser Fading on Denim Garment Washing | Procedure of Laser treatment on Garments

Laser fading (Marking) is a popular dry process for denim now a day. It has been used extensively as the replacement of some conventional dry processes which are potentially harmful and disadvantageous in some manner. Apart from this, Laser systems are used in fashion design, pleating, cutting and modification of fabric surface to impart some special finish. Laser fading works with better precision butalso have some drawbacks.

A laser system generates monochromatic, coherent photons in a low-divergent beam.
As monochromatic, the light is of a single color. As coherent, all the emissions originate from a stable oscillator with a uniform constant frequency and have the same wavelength

Advantage of laser
•    Any design at any place
•    Faster process
•    High accuracy
•    Suitable for wide range of material
•    Comparatively less strength loss
•    Low hairiness
•    Environment friendly
•    Zero water waste
•    Requires no chemical
•    Less manpower required

Disadvantage of laser
•    Initial investment is very high
•    Skilled operator is needed, which might be a disadvantage in some particular circumstances
•    Producing natural effect might be difficult
•    The laser beam itself and the produced fumes are health hazardous
•    Maintenance and servicing of the laser system may be troublesome in some circumstances

Mechanism of laser fading

Transfer certain designs onto the surface of textile material by changing the dye molecules in the fabric and creating alterations in its color quality by directing the laser to the material at reduced intensity.
The surface mtl experience photodecomposition resulting the expose of white warp yarn
The laser action on the colored denim fibers is mainly carried out with the indigo color, by thermal effect.
A pair of high-speed computer-controlled mirrors moves the laser beam on the denim material
Various levels of color removal with little or no damage to the denim material are achieved by using different laser parameters.
Through this process micrographics can be applied on the garment; special logos or characters can be applied to denim products.
laser beams from CO2 laser (wavelength: 10600 nm) applied to denim fabric in various pulse times.

Laser M/C component:

• In order to determine the optimum process conditions of laser fading technology, a laser surface design machine was used.
• The specifications of the machine:
• A laser source operating along a galvanometer consisting of a mirror and a computer operating program that controls the galvanometer mirrors and the power of the laser beam.
• Nominal power of the machine: 250Watt.
• Wavelength of the laser beams: 196nm-235nm
• CO laser =10600 nm.
• Pulse times: 20-350 μs.

Laser Print and Laser Fading on Denim Garment Washing | Procedure of Laser treatment on Garments

Posted by Firoz Kabir 1 comment

Laser fading (Marking) is a popular dry process for denim now a day. It has been used extensively as the replacement of some conventional dry processes which are potentially harmful and disadvantageous in some manner. Apart from this, Laser systems are used in fashion design, pleating, cutting and modification of fabric surface to impart some special finish. Laser fading works with better precision butalso have some drawbacks.

A laser system generates monochromatic, coherent photons in a low-divergent beam.
As monochromatic, the light is of a single color. As coherent, all the emissions originate from a stable oscillator with a uniform constant frequency and have the same wavelength

Advantage of laser
•    Any design at any place
•    Faster process
•    High accuracy
•    Suitable for wide range of material
•    Comparatively less strength loss
•    Low hairiness
•    Environment friendly
•    Zero water waste
•    Requires no chemical
•    Less manpower required

Disadvantage of laser
•    Initial investment is very high
•    Skilled operator is needed, which might be a disadvantage in some particular circumstances
•    Producing natural effect might be difficult
•    The laser beam itself and the produced fumes are health hazardous
•    Maintenance and servicing of the laser system may be troublesome in some circumstances

Mechanism of laser fading

Transfer certain designs onto the surface of textile material by changing the dye molecules in the fabric and creating alterations in its color quality by directing the laser to the material at reduced intensity.
The surface mtl experience photodecomposition resulting the expose of white warp yarn
The laser action on the colored denim fibers is mainly carried out with the indigo color, by thermal effect.
A pair of high-speed computer-controlled mirrors moves the laser beam on the denim material
Various levels of color removal with little or no damage to the denim material are achieved by using different laser parameters.
Through this process micrographics can be applied on the garment; special logos or characters can be applied to denim products.
laser beams from CO2 laser (wavelength: 10600 nm) applied to denim fabric in various pulse times.

Laser M/C component:

• In order to determine the optimum process conditions of laser fading technology, a laser surface design machine was used.
• The specifications of the machine:
• A laser source operating along a galvanometer consisting of a mirror and a computer operating program that controls the galvanometer mirrors and the power of the laser beam.
• Nominal power of the machine: 250Watt.
• Wavelength of the laser beams: 196nm-235nm
• CO laser =10600 nm.
• Pulse times: 20-350 μs.