Beer bottle and preparation method thereof

Abstract

The invention provides a beer bottle and a preparation method thereof, and belongs to the technical field of metal bottle / can processing. The beer bottle comprises a bottle body, a bottom cover and a bottle cover. The bottle body and the bottom cover are made of laminated iron, and the side, covered with a first film, of the laminated iron is located on the inner side of the bottle body and the inner side of the bottom cover. According to the preparation method of the beer bottle, the beer bottle is obtained through cold stamping and stretching, and finally, the beer bottle is heated for a certain time, so that the surface layer of the thin film is subjected to hot melting and recrystallization, a compact isolation layer is formed, and therefore, the compactness and the barrier property of the beer bottle are improved.

Description

technical field [0001] The invention relates to the technical field of metal bottle / can processing, in particular to a beer bottle and a preparation method thereof. Background technique [0002] As we all know, the beer consumption market is huge. At present, my country is the largest beer consumption country, accounting for about 25% of the global market. Common beer packaging includes glass bottles, aluminum cans, one-piece aluminum cans (bottles), three-piece iron cans, and barrels, etc., with a volume of 330mL-660mL, of which 330mL-500mL aluminum cans account for a large proportion, and glass bottle packaging is mostly Below 660mL. According to statistics, China's beer production in 2019 was 37.65 million kiloliters (kiloliter is the industry's customary unit of measurement), of which the canning rate of packaging reached 30%, about 28.9 billion cans. In 2020, the economy will be severely affected by the epidemic, and public places such as catering and entertainment wi...

AI Technical Summary

Problems solved by technology

If aluminum cans are used for packaging, the thickness of the aluminum material must be greatly increased, and special-shaped cans have higher requirements on the forming performance of the material. If the aluminum material shrinks or expands too much, it is prone to wrinkles and cracks, which cannot stabilize production. There is currently no equipment in this field

Therefore, aluminum cans are not suitable for use in this field

[0006] 2. The investment in aluminum pop can equipment is very large. For example, a set of 330mL pop can equipment has an investment of RMB 300-400 million, an output of about 3,000 cans / min, and an equipment area of ​​24,000 square meters. It is only suitable for large-scale and mass production, and it is difficult to meet The production demand of differentiated small-batch products with capacity above 500mL

It was quickly promoted in the differentiated beer packaging market, but there were several problems: After the tinplate surface was coated and dried, after cutting, seam welding, recoating, drying, rib expansion, diameter reduction, flanging and Roll sealing and other processes form a metal packaging container

Since beer is an acidic content that is easily oxidized in direct contact with tinplate, the barrier layer between beer and tinplate is paint. After the liquid paint is coated on the surface of tinplate, its compactness will decrease after multiple canning processes.

It cannot effectively block the chemical reaction between beer acid and tinplate for a long time, and there is a risk of iron ion precipitation

Moreover, there are also weld quality risks in multiple processes such as bottle body welding, repainting, curing, and molding.

Under the acidic chemical reaction of beer cans and the pressure up to 620kPa, there are problems such as weld leakage, rust and iron ion precipitation in three-piece cans

In addition, there are grooves in the countersunk tank with the upper cover of the three-piece can. After cleaning with sterile water, it cannot be completely discharged by blowing and sucking upside down. The residual water will affect the quality of beer.

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