As one of the oldest UV LED Curing system manufacture in Europe, DPL starts to design and produce the first cold UV curing lamphouse in 1996. With long-term cooperation with Danish label printing manufacturer -Nilpeter and GW, DPL sold more than 3000 sets of UV Curing system in the world. After 20 years, some of DPL system is still working on these printing machines.
For most UV printer or UV curing process user, one of the biggest problems is
a high curing temperature. Because when a UV lamp is turned on, more than
60% energy output is IR. Therefore, UV lamp can reach over 1600C degree.
As you know, most printing or coating base materials are paper or film.
Neither of them can bear so high temperature.
A health UV Lamp without ozone exhaust. DPL UV lamp head uses Ozone-Free
design, which got US Pattern and proofed by EU and Danish inspection department.
- High Uniformity
Better uniformity up to 95% on the whole web way
- DPL Own designed High Power LED Module
Each module at size 41x60mm with UV energy output up to 26w/cm2.
- Individual Power unit to each LED module
Automatic controlled Adjustable current with stable voltage to each module
to make sure all module energy output is uniformity and stable
- Longer lifetime for LED module
With high efficient cooling system, our LED module's standard working lifetime is 50000-60000 hours.
DPL is much more than just products, we also share our experience on UV curing printing, UV coating, and UV bonding onto wood, glass, metal, plastic and paper products. Our experienced engineers not only help our clients design their new UV printing and coating equipment but also help them to modify their old existing machine by adding new high-value function as holographic UV casting and curing. Welcome to read more on our Case Study and Blog.
Holographic embossing machines are designed specifically to individual customer requirements relative to web width, embossing speed and complexity.
The following steps explain one method for the commercial production of a holographic image of a three-dimensional object.
Embossing: Working shims with hologram pattern are mounted in embossing machines. A roll of polyester film or similar material which has been covered with an acrylic coating is run through the machine. Under intense heat and pressure, the shim presses the holographic image onto the film transferring the image. The embossed film can then be rewound onto a roll for finish converting.
Mastering: A laser is used to illuminate the physical object, with the reflected light falling on the plate. Simultaneously, a reference beam from the laser also falls directly on the plate. The interference patterns of these two light beams react with the photo-sensitive coating to record a holographic image of the object. The plate on which the original hologram is recorded is called the hologram master. Hologram master design includes wallpaper design and security customer design. Wallpaper designs are typically used as graphic backgrounds, like rainbow, city stars, crystal. Download our design book.
Electroforming: The master is mounted into a framework (JIG) and sprayed with silver paint to achieve good electrical conductivity. The jig is lowered into a tank along with a supply of nickel. An electric current is introduced, and the master is electroplated with nickel. The jig is removed from the tank and washed with de-ionized water. The thin, nickel coating, which is called the metal master shim, is peeled off the master plate. It contains a negative image of the master hologram (the negative is actually a mirror image of the original hologram). Using similar processes, several generations of shims are created. Those made from the metal master shim are known as “grandmothers,” and they contain positive images of the original hologram. At this stage, numerous copies of the original image are “combined” (duplicated in rows) on one shim that can be used to print multiple copies with a single impression. The stamper shims are negative images that will be used during actual production runs to print the final product holograms.
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