Glass bottles are more and more used as packaging containers for carbonated beverages, because carbonated beverages are mainly due to the taste problem caused by the content of carbon dioxide. Carbon dioxide gas is easy to volatilize. At the same time, glass bottles have high molecular density and good airtightness. , So the taste will be better.
Why do glass bottles have this advantage for carbonated beverages?
This is due to the production process of glass bottles. The production process of glass bottles mainly includes: ①Pre-processing of raw materials. Crush the bulk raw materials (quartz sand, soda ash, limestone, feldspar, etc.) to dry the wet raw materials, and remove iron from the iron-containing raw materials to ensure the quality of the glass. ② Preparation of batch materials. ③Melting. The glass batch material is heated at high temperature (1550~1600 degrees) in a pool furnace or a pool furnace to form a uniform, bubble-free liquid glass that meets the molding requirements. ④Forming. Put the liquid glass into the mold to make glass products of the required shape, such as flat plates and various utensils. ⑤ Heat treatment. Through annealing, quenching and other processes, eliminate or produce internal stress, phase separation or crystallization of the glass, and change the structural state of the glass .
What is advantages of glass bottle for carbonated drinking over other packaging ?
Glass bottles are the least likely to leak gas, so they have the best taste The difference between plastic bottles and metal cans is that plastic is a polymer material, and the arrangement of molecules must not be as close as metal atoms, which makes carbon dioxide more likely to leak. The gas in carbonated drinks in the same glass bottle is also It is not easy to leak. Therefore, the taste of cola in glass bottles and cans is better than plastic bottles. In the process of transportation and storage, plastic bottles and canned cans will cause pressure drop due to packaging deformation. This problem does not exist for glass bottles. In addition, the permeability of glass, aluminum cans and plastic cans may still be different. The glass is stable, and the inner wall only needs to be cleaned before use; however, the inner wall of the can made of aluminum alloy is actually coated, and the inner wall of the plastic bottle is similar.Plastics or plastic coatings may react with cola liquid during storage, thereby affecting the taste.
Different parts of the tongue touch the drink first, and the taste is different. Some people think that the different opening shapes of cans and plastic bottles result in different contact positions with the tongue, resulting in a difference in taste: when drinking cans, cola touches the front part of the tongue, which has richer taste buds and is more sensitive to bubbles and sweetness. So I feel better. When drinking in a bottle, the cola is poured directly into the middle and back of the tongue, and the taste is not as good as the former, but because a large number of bubbles enter the stomach directly, it feels more refreshing.
Post time: Jan-13-2021