Why use glass bottles instead of plastic bottles for beer bottles? Many people may have this question because most beverage bottles are made of plastic, but most beer is bottled in glass, and of course, there are also canned ones, but only those without plastic bottles. So what are the reasons?

1. Glass bottles have the advantages of good gas resistance, long storage life, good transparency, and easy recycling. Beer is extremely sensitive to light and oxygen, and the shelf life is usually 120 days. It is required that the oxygen permeability of beer bottles should not exceed 1 × 10-6g within 120 days, and the loss of CO2 should not exceed 5%. This requirement is 2-5 times that of pure PET bottles.

2. One of the important ingredients in beer is hops, which give beer a special bitter taste. The ingredients in hops are photosensitive and will decompose under the action of ultraviolet rays in sunlight, producing an unpleasant "sun odor". Colored glass bottles can to some extent reduce the occurrence of this reaction. However, brown bottles have a better effect than green, and there are colorless transparent bottles of beer on the market. The hops added in production are processed. Ordinary window glass, oil bottles, wine bottles, etc. have a faint green color, which is caused by the impurities of divalent iron ions in the raw materials used to manufacture glass. Some medicine bottles, beer bottles, and soy sauce bottles are brownish yellow, which is still caused by iron impurities, but not divalent iron ions, but trivalent iron ions.

3. Beer contains organic components such as alcohol, and the plastic in plastic bottles belongs to organic compounds, which are harmful to the human body. According to the principle of comprehensive compatibility, these organic substances will dissolve in beer. When people drink such beer, they will also ingest these toxic organic substances, causing harm to the human body. Therefore, beer does not need to be packaged in plastic bottles.

Therefore, the above reasons determine that plastic bottles cannot be used for beer. Some breweries use the pasteurization method for beer, requiring a peak temperature resistance of 298 ℃. However, the strength, heat resistance, and gas barrier properties of pure PET bottles do not meet the requirements of beer bottles. Therefore, people are competing to research and develop various new materials and processes for barrier and enhancement.

Xuzhou Junding Glass Products Co., Ltd. (18260727877) is a glass bottle manufacturer engaged in the design, packaging, and manufacturing of glass bottles. It specializes in producing and exporting orchid tissue culture bottles, glass candle holders, seasoning bottles, and is equipped with mold factories, bottle cap factories, cardboard box factories, and mature freight logistics. It is a comprehensive glass bottle manufacturer