CTP stock and PS version of the aluminium version of the requirements of what is the
askaluadmin > 12-18-2017, 01:34 AM
CTP technology has become increasingly popular and rapid development, as well as CTP stockprices continue to decline, CTP technology has been more and more loved by the majority of printing practitioners, CTP stock use also quickly catch up with the traditional PS version of the trend. Printing on the stock of the overall requirements are high, especially the current CTP stock used for high-grade color printing stock, to ensure that the stock quality, version of the apparent quality of the base is a prerequisite. CTP technology is characterized by CTP stock with the base quality, such as the apparent quality, physical performance and adaptability of electrolytic properties have certain requirements, printed cat net supplies franchisee for the CTP stock based on the commonly used aluminium version of the introduction.
1.CTP stock and PS version of the aluminium version of the apparent performance requirements of the difference
The basic requirements for the aluminium version of the basic requirements are clean, smooth, no cracks, corrosion pits, points, vent holes, scratches, injury, marks, from the skin, pine branches, oil marks and other ills; Non-metallic pressure and sticky injury, horizontal skin, stripes and other defects; do not allow a slight color, bright and other issues; can not have drums, lotus leaf and other phenomena. The PS version can ignore the above problems, mainly because the CTP device using scanning imaging, unlike the PS version of the copy is to take the vacuum way to make the layout and film close, such as the flatness of the stock is poor, will affect the laser imaging quality.
2.CTP stock and PS version of the aluminium version of the geometric requirements of the difference between the requirements
1) aluminium plate thickness difference
CTP stock with aluminium plate thickness is generally 0.280mm, slightly thicker than the current production of PS version (PS version of the base thickness of 0.270mm ± 0.005mm). Some foreign companies use 0.275mm thick aluminium plate of the base, the thickness tolerance are ± 0.005mm. Aluminium plate thickness thicker, stock stiffness will be better, not easy to bend.
2) aluminium roll width difference
China CTP stock production is generally not installed on-line trimming device, so the width of the aluminium roll tolerance ≤ ± 0.5mm, the best no tolerance. Aluminium roll cutting quality also has a clear requirement, that is, after the longitudinal roll of aluminium should not have burrs, lotus leaf and other phenomena. Of course, before the coating should be cut on both sides of the electrolytic side.
3) version of the vertical and horizontal uniformity
[url=http://www.aluminiumcheckerplate.com/][/url]aluminium plate longitudinal and transverse thickness tolerance should be ≤ ± 0.005mm. The thickness of the stock is set to 0.280mm or 0.275mm. The thickness deviation will affect the stock making, and the parameters set by the CTP stocks are not allowed to be adjusted at will.