1. Glass overview
What is glass
Glass is an amorphous solid that is cooled and hardened by molten material. In a narrow sense, glass refers to inorganic glass. That is, silicate non-metallic materials with continuous irregular network structure, the chemical oxide composition is: Na2O·CaO·6SiO2, and the main component is silicon dioxide.
Second, the use of glass
Glass can be adjusted by scientifically adjusting the formula composition, combined with various process methods to adjust the physical and chemical properties of the glass to meet a wide range of practical requirements, and can be made into various hollow and solid cores by a variety of molding methods. The shape can also be made into complex-shaped devices through processing methods such as welding and powder sintering.
As structural and functional materials, glass is widely used in building materials, light industry, transportation, medicine, food, chemicals, optics, electronics, aerospace and atomic energy.
Three, the advantages of glass packaging containers
Glass packaging containers: mainly used for packaging wine, beverages, food, condiments, medicines, cosmetics, chemicals, etc. It is a traditional industry belonging to the people's livelihood economy with a long history and has always been an indispensable role in the social economy. The development of the glass packaging container industry is directly related to and closely related to the daily life of the people. It not only provides high-quality packaging materials for other industries, but also provides safe, green and environmentally friendly home glass products for urban and rural residents, making positive contributions to improving and enhancing people's living standards and promoting consumption.
The glass packaging container has two excellent characteristics of its own material:
1. Environmentally friendly
In terms of recycling, waste and broken glass products can be recycled nearly 100%, remelted, and made into new glass containers, which will not cause waste pollution to the environment. It is one of the important raw materials that can be recycled and reused (in theory, it can be recycled indefinitely as raw materials) and has the least carbon footprint. Can greatly save limited resources and energy.
2. Green and healthy type
It has good permeability (the condition of the contents can be observed), excellent chemical stability (non-toxic to the contents and no pollution), excellent plasticity (easy to make packaging containers of different shapes with precise dimensions), ideal Sealing, easy to clean and so on.
In the process of glass melting, the introduced waste glass cullet only needs to undergo physical changes during melting to be melted into molten glass. It can reduce the surface tension of the solution and increase the heat radiation transmittance of the material layer due to its wettability. Good, easy to distribute into batches. The waste glass cullet is equivalent to a certain decarbonized raw material, and the use of waste glass cullet can reduce about 150 kg of CO2 released by the decomposition of carbonate in the glass raw material. According to expert estimates, every 10% increase in waste glass cullet can save energy consumption by 2.5%. When the amount of waste glass cullet cited in the glass raw material formula reaches 60%, theoretically energy consumption can be reduced by 6% and carbon dioxide emissions can be reduced by 5 Around %-20%. This is of great significance to energy saving, emission reduction and carbon emission reduction! It is a veritable green industry in line with the national industrial policy for the development of circular economy.
Fourth, a brief history of glass
About 3700 BC, the ancient Egyptians had made glass ornaments and simple glassware, but only colored glass was available at that time.
About 1000 BC, China had produced colorless glass. Commercial glass appeared in the 12th century.
In the 18th century, in order to meet the needs of developing telescopes, optical glass was produced.
In 1874, Belgium first produced flat glass.
In 1906, the United States produced flat glass leading to the machine.
Since then, with the industrialization and large-scale production of glass, glass of various uses and various properties has come out one after another. In modern times, glass has become an important material in daily life, production, and science and technology.
Glass has a long history in China. The history of manufacturing glass in ancient China can be traced back to the Western Zhou Dynasty (1046 BC-771 BC), Han Dynasty (202 BC-220 BC), and there have been records since the Sui and Tang Dynasties.
