Production process is based on three dominant technologies for production of glass packgagings:
- NNPB method (narrow neck press and blow): applied in the production of narrow neck thin walled packgagings. It uses pressing force of a plunger on the side of blank moulds and blow-out force on the side of moulds. After a gob is loaded into a blank mould, a bulb is formed by means of a plunger. A closure of the product is formed in the final phase of pressing. Then the bulb is transferred by means of a roller to a finish mould where a finished product is finally blown out. NNPB method ensures better distribution of glass in the finished product and saves the amount of molten glass used in production. Packgagings manufactured in NNPB technology can have 92 mm diameter, maximum finish diameter of 48 mm and they can be 60 to 283 mm high.
- PB method (press and blow): the manufacturing process is the same as in the case of NNPB method described above. The PB method is applied for producing wide neck packagings. Orzesze Glassworks can manufacture packgagings in the PB technology whose diameter is up to 95 mm, height is from 32 up to 288 mm and finish diameter is up to 90 mm.
- BB method (blow and blow): it is applied for production of narrow neck thick walled packgagings. It applies blow-up for the entire operation of moulding, both on the side of blank moulds and finish moulds. After a gob is loaded into a blank mould, a bottle closure is formed and a bulb is blown out whose shape depends on the pattern of a finished product. Then the bulb is transferred by means of a roller to a finish mould where a finished product is finally blown out. Using the BB method Orzesze Glassworks can manufacture packagings with maximum diameter of 95 mm, height of 32 up to 325 mm and finish diameter of up to 48 mm.