How are glass bottles produced and manufactured?
Release time:2024-02-21 13:30:45

In daily life, we often use various types of glass products, such as glass windows, glass cups, glass sliding doors, etc. Glass products balance aesthetics and practicality, making them both appealing with their crystal clear appearance and fully utilizing their hard and durable physical properties. Some art glass even adds more patterns to the glass, enhancing the decorative effect.

1、 How is a glass bottle made

The production process of glass bottles mainly includes:

① Raw material pre-processing: Crush block shaped raw materials (quartz sand, soda ash, limestone, feldspar, etc.) to dry moist raw materials, and remove iron from iron containing raw materials to ensure glass quality.

② Batch preparation

③ Melting: The glass batch is heated at high temperature (1550-1600 degrees) in a tank or furnace to form a uniform, bubble free liquid glass that meets the molding requirements.

④ Forming: Put liquid glass into a mold to make glass products of the required shape, such as flat plates, various vessels, etc.

⑤ Heat treatment: Through annealing, quenching and other processes, it can eliminate or produce stress, phase separation or crystallization inside the glass, as well as change the structural state of the glass.


2、 The difference between tempered glass and heat-resistant glass

1. Different uses

Tempered glass is widely used in the construction, decoration, automotive manufacturing industries (doors and windows, curtain walls, interior decoration, etc.), furniture manufacturing industries (furniture accessories, etc.), and home appliance manufacturing industries (televisions, ovens, air conditioners, refrigerators, etc.).

The main applications of heat-resistant glass are in the daily necessities industry (heat-resistant glass preservation boxes, heat-resistant glass tableware, etc.), and in the medical industry (mostly used in medical ampoules and experimental beakers).

2. The impact of temperature changes varies

Heat resistant glass is a type of glass with strong heat resistance and impact resistance (able to withstand sudden changes in temperature and low coefficient of thermal expansion), and can be used at high temperatures (high strain and softening temperatures). Therefore, it can be safely used in ovens and microwaves even in the event of sudden temperature changes.

Tempered glass may experience cracking when subjected to sudden temperature changes in a microwave oven. During the production of tempered glass, due to the presence of nickel sulfide inside, the glass may expand over time and temperature, leading to the possibility of self explosion. It cannot be used in an oven at all.

3. Different crushing methods

When heat-resistant glass is broken, it produces cracks and does not fly. There is no risk of self explosion due to nickel sulfides in heat-resistant glass because it gradually cools down and there is no condensation energy inside the glass. So when it breaks, it won't fly away.

When tempered glass breaks, it will shatter and fly away. During the tempering process, tempered glass forms pre-stress and condenses energy inside the glass. Therefore, when it is damaged or self explodes, the condensed energy will be released, forming fragments that fly away and producing explosive sounds.