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Laser cutting and engraving on leathers

Updated:2011/3/11 5:15:36  Source:hanzlaser  Edit:hanzlaser  Views:

 Leather engraving is usually used in upper vamp, handbags, and dermises, boxes and cases, and so on. The processing forms include drilling holes, drawing lines on the surface or cutting pictures.The process requirements: no yellowing on the surface of the lines, the bottom color of the materials should be showed, no blacking at the incision of the dermis,the engraving is clear. Materials include synthetic leather, PU leather, PVC leatherroid, Rough dermis materials, semi-products, various kinds of leather upper materials, and so on. The engraving speed is determined by sizes of graphics.The slower speed, 0.8 meter per minute, is for small pictures and the higher, 1.5-3 meters per minute, is for big pictures.The slower speed, 0.8 meter per minute, is for small pictures and the higher, 1.5-3 meters per minute, is for big pictures.The optical density 75% is enough to breakdown most leathers. The speed of dermis cutting will be slower, 0.4-1.2 meters per minute and the optical density is 60-75%.The incision of dermis will become black.Air slash will generate oxide layers.It’s difficult to meet the requirements of no blacking at the incision of dermis. To meet these requirements, some processing is need, such as move away the blacking edge with plasticine.And until now, there is no resolution to the odor generated in the cutting process。Cutting with nitric require high pressure nitric and it’s of slow speed and high cost.But it’s of better effect to cut non-oxide layer。Different leather should use different cutting methods.For example, in marking of leatherroid, the leather can be wetted first and then marking for better effect。For cutting of dermis, masking tape can be laid on to avoid yellowing; blacking of incision need special treatment.

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