The main characteristics of glass packaging containers are: non-toxic, odorless; transparent, beautiful, good barrier, airtight, abundant and common raw materials, low price, and can be used multiple times. And it has the advantages of heat resistance, pressure resistance and cleaning resistance, and can be sterilized at high temperature and stored at low temperature. It is precisely because of its many advantages that it has become the preferred packaging material for many beverages such as beer, fruit tea, and sour jujube juice.
71% of the world’s beer is filled in glass beer bottles, and China is also the country with the highest proportion of glass beer bottles in the world, accounting for 55% of the world’s glass beer bottles, more than 50 billion per year. Glass beer bottles are used as beer packaging. Mainstream packaging, after a century of vicissitudes of beer packaging, is still favored by the beer industry due to its stable material structure, no pollution, and low price. Glass bottle is the preferred packaging when it has the best touch. In general, glass bottle is still the usual packaging for beer companies.” It has made a huge contribution to beer packaging, and most people love to use it.
The glass bottle production process mainly includes: ① raw material preprocessing. The bulk raw materials (quartz sand, soda ash, limestone, feldspar, etc.) are crushed, the wet raw materials are dried, and the iron-containing raw materials are subjected to iron removal treatment to ensure the quality of the glass. ②Preparation of ingredients. ③ Melting. The glass batch is heated at a high temperature (1550~1600 degrees) in a pool kiln or pool furnace to form a uniform, bubble-free liquid glass that meets the molding requirements. ④Molding. Put the liquid glass into the mold to make glass products of the required shape, such as flat plates, various utensils, etc. ⑤ heat treatment. Through annealing, quenching and other processes, the stress, phase separation or crystallization inside the glass is eliminated or generated, and the structural state of the glass is changed.
Field advantages
Advantages of glass packaging containers in the field of beverage packaging
glass bottle
glass bottle
Glass packaging materials and containers have many advantages: 1. Glass materials have good barrier properties, which can well prevent the invasion of oxygen and other gases to the contents, and can prevent the volatile components of the contents from volatilizing into the atmosphere;
2. The glass bottle can be used repeatedly, which can reduce the packaging cost;
3. The glass can easily change the color and transparency;
4. Glass bottles are safe and hygienic, have good corrosion resistance and acid corrosion resistance, and are suitable for the packaging of acidic substances (such as vegetable juice drinks, etc.);
5. In addition, because glass bottles are suitable for the production of automatic filling production lines, the development of automatic glass bottle filling technology and equipment in China is also relatively mature, and the use of glass bottles to package fruit and vegetable juice beverages has certain production advantages in China.