The main principle of pressing records from vinyl matter has remained unchanged for several decades. There have, however, been some slight improvements in the technology though, such as electronically controlled presses or automatic production. In a hydraulic press fitted with 2 pre-heated moulds and fitted with stampers, the pre-heated vinyl matter is inserted into the machine sandwiched between two completely dry labels. Once the pressing process is started, the labels and vinyl matter are pressed under a pressure of 100 or more tons at a temperature of 160°C (345°F) for a precise amount of time. The surfaces of the grooved stampers are copied exactly into the vinyl matter. After the pressing mould is sufficiently cooled, the press opens and the vinyl record is removed, trimmed to the required size and visually inspected.
GZ Vinyl has been using proven and reliable manual double-presses from the German company Taunus Ton Technik (TTT) for years. Experienced and skilled operators carry out their work on these machines including a standard visual inspection of each pressed record. In addition to pressing classic black records, manual presses allow us to produce more unique and interesting records with different colours and effects as well as records with full surface picture labels embedded into them (picture discs). In 2012, GZ increased the pressing capacity of black and single coloured records after purchasing several automatic presses manufactured by the Swedish company Alpha Toolex.
Test pressings are highly recommended. They allow for the producer, band, label, etc to check the overall quality of the cut, sound and metalwork used for the production of your records before we press the full amount. Generally, we will send you 5 test pressings - black vinyl records with blank white labels, which you will need to listen to and approve. Once these have been approved, we can continue with the rest of the production.
Nowadays, the production of vinyl records requires a high quality material which ensures a low background noise so that audiophiles can enjoy listening to their favourite music without the disturbing background noise which was commonly present on records in the past. Most manufacturers of vinyl records must purchase the vinyl compound that they require for pressing their records from 3rd party suppliers, but here in GZ, we produce our own vinyl compound according to our own special formula of raw material. Our specially formulated compound has won several international awards and our GZ brand vinyl is highly praised on both sides of the Atlantic. With the current high demand for vinyl records, GZ has absolutely no problem manufacturing enough vinyl compound to sufficiently cover our production quantity needs.
The progress of all processes in GZ is monitored and recorded from the initial entering of an order into the internal system through to the production of the vinyl records and printed parts and finally to the transportation of the goods to the customer. Of course, the supplied audio data and its suitability for the production of vinyl records as well as the preparation and possible correction of supplied graphic materials for printed products - labels, packaging etc are also thoroughly checked. A visual inspection is carried out among all products in the production department and a random sample of each record is chosen for listening after being pressed.