The process

The source of the technology is basically the same as the technology used in laser printing in which a toner (dry ink powder) particles are mixed with carrier particles. A carrier is a special coated ferrite (magnetic) particle with dedicated tribo properties designed to be "loaded" with toner/powder particles.
The powder loaded carrier is then transported to the substrate by a magnet drum. The powder is then released from the carrier by an electric field and deposited on the substrate. Leaving the powder on the substrate. Curing/melting of the powder on the substrate will then result in substrate with a extremely even powdercoatinglayer. The unloaded carrier goes back into the system ready to be mixed and loaded with fresh powder particles again.

Patented technology

The basic difference between toner and powder (coating) particles are differences in material properties and the sensitivity for the dynamics of mixing and charging. To overcome this elementary differences the EMB-machines are specially constructed for continues deposition with the use of al kinds of powdercoatings and exclusively use the patented fluidized bed mixing technology, by Atotech. The accuracy of the deposition of powder particles on a substrate is about the same as laser printing which enables a very controllable deposition of powder on a substrate.

The combination of toner and carrier particles in a laser printer are called "developer system" , the combination of powder and carrier in EMB is named "transfer mixture" to indicate the major process differences in properties and behavior.

Summarized; the loaded magnetic carrier particles will behave as brush under influence of a magnetic field. An electric field will release the powder particles from the carrier. Therefore the process is called EMB (Electro Magnetic Brush). Below there are 3 pictures of the carrier and powder 100x enhanced.

EMB Technology

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Contact us

EMB Technology BV
Hallseweg 21
6964 AJ  Hall
The Netherlands

info@emb-technology.com
Tel +31 (0) 313 671 930
Fax +31 (0)313 671 919
BTW 8144.19.719.B.01
KVK 37113933

News

Drawings of first stage of the 2nd generation EMB-Powdercoatingmachine finished.

20-11-2013

Stage one is released from the engineering department. Parts will be ordered as soon as possible and stage one will be assembled beginning of 2014.
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Start Development of new small scale laboratory machine.

26-8-2013

Because of the demand for small scale EMB laboratory machines, to research the possibilities of the technology with a low investment level, we decided to create a solution and develop such machine. This machine will again be a new compact concept that will combine the current EMB technology with the CCD technology.
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Start development of 2nd generation EMB-Powdercoatingmachine.

21-2-2013

With the knowledge we gained in the past 1,5 years with trials, the carrier cleaning technology and the results of coating trials. We decided to start developing a new EMB-Powdercoatingmachine that combines the CCD, and existing EMB technology in a completely new and innovative machine design.
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Carrier Cleaning Device finished.

3-2-2013

After some small adjustments to the basic design the First large scale Carrier Cleaning Device in the world is a fact. We were able to successfully separate carrier from powder/toner in a continues process. Laboratory test of the cleaned carriers (magnesium ferrite Beads) show less than 1% powder concentration in all cleaned carriers. Some types of developer show even a 0,1% powder concentration, which may even be small contamination.
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New Company location.

1-1-2013

From the 1st of January complete DG press Group can be found in its new 7000m2 company location at the Hallseweg 21, Hall. DG press bought the new building and will be housing DGPS, DGPM and EMB-Technology.
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Start assembly of Carrier Cleaning Device.

11-9-2012

A lot of effort is put into the development of the CCD device for large scale separation of carrier and powder/toner. Extensive testing has been done and we feel confident that this innovative machine will be a success. Because of the innovations within the cleaning process a Dutch patent application is put in.
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Preformed first industrial coilcoating trials with the EMB demo machine.

20-3-2012

The main focus for the application of EMB is still the coilcoating market thatí is why a lot of effort is put in developing this market and getting the right coating results. The last few weeks we were able to place the 300mm wide EMB-demomachine in-line in an industrial wet coilcoatingline. We learned a lot about the powders, curing, the EMB-process and machine in an industrial environment.
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Development of Carrier Cleaning device started.

16-2-2012

Carriers are small ferrite beads and are used in the EMB process to transfer the coatingpowders. But next to this they are also used in Laser printers and copiers all over the world. Because the growing demand for separating the used carrier from the coatingpowder (or Toner how it is called in printers) in the laser printer business, and for being able to clean our own carrier when we do a colour change-over. We decided to start the development of an carrier cleaning device (CCD).
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