our virtual classroom for the design processes course at nift gandhinagar - august 2008

Thursday, August 21, 2008

cd manufacturing process

PRE MASTERING

High quality reproduction that is backed by ISO certification.

MASTERING

Then we create a glass master covered with a photosensitive layer and engrave all our customer’s information on it with a laser light. To help fight against piracy on behalf of our customers, the plant engraves its International Federation of the Phonographic Industry (IFPI) number on every glass disc it produces. Following that, a fine silver coating is applied to the glass master’s surface by a process known as vacuum evaporation.

ELECTROPLATING

The glass master is then transformed into a “mould” which is used to press discs. This is achieved by adding a layer of nickel on the glass master by means of electrolysis. The nickel layer is then separated from the glass base to recover the negative of the CD. The result is what is called the stamperCDs can now be replicated. Liquefied polycarbonate is then injected into the mould and, after only a few seconds of pressing, a compact disc containing all the data is quickly created.

METALLIZATION

In order for the CD to be readable, it must be covered with a micro thin layer of aluminum which is vacuum laid. The aluminum surface acts as a mirror to reflect the laser light back so information can be read.

VARNISHING

To protect the CD and its information from harm — scratching, bending, or dropping it — the disc is covered with a layer of varnish. The lacquer envelops the aluminum and seals it from the elements. .

LABEL PRINTING

The final touch comes with the printing of the label right on the disc, either by a silk screen or offset process and with up to six colors.

PACKAGING

Highest quality printing services and the most complete selection of packaging solutions in the industry.

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