The first flow diagram illustrates the process manufacturing of glass containers, such as bottles, and the second demonstrates the recycling of used glass. The first method uses three main raw materials, flowing through four stages, to make glass containers. The second process consists of five steps where used glass is recycled and converted into new items.
Glass container production begins with the mixing of sand, soda ash, limestone, and other chemicals, followed by melting the mixture in a glass furnace at temperatures of approximately 1,500 degrees Celsius. After that, the melted glass mixture is shaped into glass containers through the molten glass blowing method.
In the glass recycling process, firstly, the used glass is accumulated for sorting. Secondly, the collected glass is sorted according to its colors, followed by impurity removal, which is done by washing the glass. Finally, the cleaned glass is crushed, melted, and passed through the molding machine to be molded into new glass products.