From the data obtained, the trends of oxygen evolution, turbidity, and diacetylation in the baths of PET bottled beer and glass bottled beer are consistent, all of which gradually decrease, and almost no change in carbon dioxide.
At present, the status of domestic beer packaging PET bottles as packaging containers in the beverage industry has been very common, almost completely replace the beverage industry's glass containers. In recent years, PET beer bottles of high barrier materials have also been widely used in foreign countries. PET bottles not only have the performance of glass beer bottles, but also are convenient, safe, convenient for storage and recycling, and the most important one is safety. At present, beer companies often encounter problems caused by beer bottle explosions and injuries. Although the relevant national authorities have forced the use of special beer bottles with “B†for 5 years, they have not fundamentally solved the problem. It turns out that beer bottles are Blasting wounds are not all non-B bottles. Many times the B bottles are also fried. The reason is: on the one hand, the uneven quality of beer bottles in China, the inspection of beer bottles is random inspection, it is difficult to avoid the existence of defective products in batch products; on the other hand, abnormal opening or collision of consumers leads to accidents; On the other hand, in China and even in the world, the output of any kind of wine is not as large as the production of beer. With such a rapid development, the number of people who drink beer in all alcoholic products is the largest. Plus, beer itself is a nutrient that contains gas. Drinks, consumers have a great chance to contact beer bottles, and the safety factor of glass bottles is relatively small. If the PET bottle can be widely used in the beer industry, it will completely solve the above problem.
According to statistics data of China's wine industry, China's total beer production in 2005 reached 30.615 million kiloliters. If bottled beer production accounted for 70%, it would be calculated at 630 ml/bottle, and beer bottles used throughout the country would also have 34 billion yuan. Bottles, there are quite a few glass bottles below 500ml, the actual use of the number is much greater than 34 billion bottles. Therefore, as long as the PET beer bottle solves the performance problem of the barrier material, it should have a very broad prospect in the development and application of the beer industry.
PET bottle beer experiment Hebei Lanbei Wine Group Co., Ltd. and Zhuhai Zhongfu Industry Co., Ltd. began to jointly develop the PET bottled beer project in January 2005. Zhuhai Zhongfu provided PET bottle with three layers, the middle layer was EVOH (ethylene-vinyl alcohol copolymer) as barrier layer, the test bottle type was 1.6L large-capacity PET bottle, and the cap was screw cap; the liquor was 11 °P liquor.
Two months of contrasting tasting: 5 people who participated in the review, using the three-cup method, using the same period of glass bottle wine as a comparison tasting, tasting results, there are 2 people tasting correctly, the remaining 3 people are not correctly distinguished, the general feeling: There is no obvious difference between glass bottles and PET bottled beer. From the test results, the dissolved oxygen content of the test sample is slightly higher than that of the glass bottle (not a special device), but the color and turbidity of the wine do not change much during storage, and there is no increase in oxygen at the later period. With the prolonged storage time, the oxygen content Curved decline, CO2 content is stable, the change trend of diacetyl is basically the same with the glass bottle. Experiments show that Zhuhai Zhongfu PET three-layer bottle is used for beer filling. The barrier properties of the barrier material are good and it meets the requirements for beer filling.
The PET three-layer beer bottle produced by Zhuhai Zhongfu can be used to produce cooked beer, which can be pasteurized. However, the bottle wall is thin relative to the glass bottle, heat transfer is fast, the sterilization temperature must be reduced, and the temperature in the warming zone must also be lowered. The temperature in the heating zone is the same as the temperature in the holding zone. It can be at 61°C. The PU value cannot be high. The best control is between 15 and 18. In this condition, the barrier material and the PET material are not separated.
The CO2 content of PET bottled beer must be strictly controlled. Even at the above sterilization temperature, the maximum content does not exceed 0.58%, and it is absolutely safe to control within 0.55%. Otherwise, it is easy to cause deformation of the bottle. When the CO2 content is 0.58% in the test, the individual bottle full-mouth capacity increases from 1655 ml before use to 1685 ml, and the deformation rate reaches 1.81%, which makes the finished wine look untidy This problem may be related to the quality of individual bottle bottles.
PET bottles have low bactericidal PU values, but have good microbiological indicators and are suitable for pure draft beer.
Trial production of PET bottles of beer dissolved oxygen and bottleneck air relative to the glass bottles is still high, need to continue to explore and solve.
During wine testing, it was found that there were stratifications under the neck of a very small number of PET bottles.
Conclusion after trial production The domestic bottle production technology of PET three-tier bottle produced by Zhuhai Zhongfu in Zhuhai has been relatively perfect. The barrier of the material to oxygen and carbon dioxide has reached the beer filling technical requirements. The process control can solve the thermal deformation problem of PET three-layer bottles in the sterilization of buses. PET bottles cannot be vacuumed like glass bottles, and long tube fillers are preferred in production. In the case of long tube filling machines, the dissolved oxygen after CO2 replacement may be lower, and the preservation performance of beer in the increase of PET bottles will be better, and the amount of carbon dioxide used will also be reduced. Under the condition of process conditions, the smaller the difference between full capacity and effective volume, the better, which is conducive to reducing the bottleneck air. After sterilization, the liquid level in the bottle is also easier to observe.
PET Beer Packaging Cost PET bottle costs are currently slightly higher, but it is expected to decrease after the beer industry has been widely promoted. After the large amount of bottles is produced, the unit cost of the bottles will be reduced. Our preliminary calculation: 1.6L beer is equivalent to about 3 bottles of glass beer, if you use a new bottle, the glass bottle price will be 1.8 yuan for 0.6 yuan, and the PET bottle will be 2.0 yuan. The difference between the two bottles is 0.2 yuan. 1.6L
Only one set of bottle and one bottle cap are used, and three glass bottles are used; the new glass bottle also goes through the bottle washing machine, which consumes electricity and consumes steam. The PET bottle washing machine can be used to stop the operation. Only a few fans with very low power can be sent to the wine machine. The energy consumption can be reduced by a large amount; the transportation cost can be reduced by more than 40%, especially bottled wine and glass bottles. The weight accounts for more than 40% of the gross weight of the beer, and a 1.6 liter PET triple layer bottle is only 72 ± 1 gram. According to the results of the accounting, if all new bottles are used, the PET bottles and glass bottles will have a similar cost. ?
The use of PET beer bottles is conducive to environmental protection, can reduce the amount of sewage treatment, a bottle washing machine of 24,000 bottles per hour, according to the bottle washing machine instructions, each bottle of water consumption 0.5 liters, the lowest hourly water consumption 12 cubic meters, the daily water consumption must also be above 24 cubic meters. The workshop's production environment will be better. Personally think that PET bottles are indeed the development direction of beer packaging technology, and it is also a revolution of beer packaging technology.
PET bottles completely replace glass bottles in the beer industry, which requires the simultaneous development of the beer packaging machinery industry, especially the development of long tube filling machines that are suitable for PET bottle filling technology requirements. Consumers need to have a cognitive process for PET bottled beer. They need the support, advocacy and guidance of relevant industry units and need the joint efforts of the beer industry.
At present, the status of domestic beer packaging PET bottles as packaging containers in the beverage industry has been very common, almost completely replace the beverage industry's glass containers. In recent years, PET beer bottles of high barrier materials have also been widely used in foreign countries. PET bottles not only have the performance of glass beer bottles, but also are convenient, safe, convenient for storage and recycling, and the most important one is safety. At present, beer companies often encounter problems caused by beer bottle explosions and injuries. Although the relevant national authorities have forced the use of special beer bottles with “B†for 5 years, they have not fundamentally solved the problem. It turns out that beer bottles are Blasting wounds are not all non-B bottles. Many times the B bottles are also fried. The reason is: on the one hand, the uneven quality of beer bottles in China, the inspection of beer bottles is random inspection, it is difficult to avoid the existence of defective products in batch products; on the other hand, abnormal opening or collision of consumers leads to accidents; On the other hand, in China and even in the world, the output of any kind of wine is not as large as the production of beer. With such a rapid development, the number of people who drink beer in all alcoholic products is the largest. Plus, beer itself is a nutrient that contains gas. Drinks, consumers have a great chance to contact beer bottles, and the safety factor of glass bottles is relatively small. If the PET bottle can be widely used in the beer industry, it will completely solve the above problem.
According to statistics data of China's wine industry, China's total beer production in 2005 reached 30.615 million kiloliters. If bottled beer production accounted for 70%, it would be calculated at 630 ml/bottle, and beer bottles used throughout the country would also have 34 billion yuan. Bottles, there are quite a few glass bottles below 500ml, the actual use of the number is much greater than 34 billion bottles. Therefore, as long as the PET beer bottle solves the performance problem of the barrier material, it should have a very broad prospect in the development and application of the beer industry.
PET bottle beer experiment Hebei Lanbei Wine Group Co., Ltd. and Zhuhai Zhongfu Industry Co., Ltd. began to jointly develop the PET bottled beer project in January 2005. Zhuhai Zhongfu provided PET bottle with three layers, the middle layer was EVOH (ethylene-vinyl alcohol copolymer) as barrier layer, the test bottle type was 1.6L large-capacity PET bottle, and the cap was screw cap; the liquor was 11 °P liquor.
Two months of contrasting tasting: 5 people who participated in the review, using the three-cup method, using the same period of glass bottle wine as a comparison tasting, tasting results, there are 2 people tasting correctly, the remaining 3 people are not correctly distinguished, the general feeling: There is no obvious difference between glass bottles and PET bottled beer. From the test results, the dissolved oxygen content of the test sample is slightly higher than that of the glass bottle (not a special device), but the color and turbidity of the wine do not change much during storage, and there is no increase in oxygen at the later period. With the prolonged storage time, the oxygen content Curved decline, CO2 content is stable, the change trend of diacetyl is basically the same with the glass bottle. Experiments show that Zhuhai Zhongfu PET three-layer bottle is used for beer filling. The barrier properties of the barrier material are good and it meets the requirements for beer filling.
The PET three-layer beer bottle produced by Zhuhai Zhongfu can be used to produce cooked beer, which can be pasteurized. However, the bottle wall is thin relative to the glass bottle, heat transfer is fast, the sterilization temperature must be reduced, and the temperature in the warming zone must also be lowered. The temperature in the heating zone is the same as the temperature in the holding zone. It can be at 61°C. The PU value cannot be high. The best control is between 15 and 18. In this condition, the barrier material and the PET material are not separated.
The CO2 content of PET bottled beer must be strictly controlled. Even at the above sterilization temperature, the maximum content does not exceed 0.58%, and it is absolutely safe to control within 0.55%. Otherwise, it is easy to cause deformation of the bottle. When the CO2 content is 0.58% in the test, the individual bottle full-mouth capacity increases from 1655 ml before use to 1685 ml, and the deformation rate reaches 1.81%, which makes the finished wine look untidy This problem may be related to the quality of individual bottle bottles.
PET bottles have low bactericidal PU values, but have good microbiological indicators and are suitable for pure draft beer.
Trial production of PET bottles of beer dissolved oxygen and bottleneck air relative to the glass bottles is still high, need to continue to explore and solve.
During wine testing, it was found that there were stratifications under the neck of a very small number of PET bottles.
Conclusion after trial production The domestic bottle production technology of PET three-tier bottle produced by Zhuhai Zhongfu in Zhuhai has been relatively perfect. The barrier of the material to oxygen and carbon dioxide has reached the beer filling technical requirements. The process control can solve the thermal deformation problem of PET three-layer bottles in the sterilization of buses. PET bottles cannot be vacuumed like glass bottles, and long tube fillers are preferred in production. In the case of long tube filling machines, the dissolved oxygen after CO2 replacement may be lower, and the preservation performance of beer in the increase of PET bottles will be better, and the amount of carbon dioxide used will also be reduced. Under the condition of process conditions, the smaller the difference between full capacity and effective volume, the better, which is conducive to reducing the bottleneck air. After sterilization, the liquid level in the bottle is also easier to observe.
PET Beer Packaging Cost PET bottle costs are currently slightly higher, but it is expected to decrease after the beer industry has been widely promoted. After the large amount of bottles is produced, the unit cost of the bottles will be reduced. Our preliminary calculation: 1.6L beer is equivalent to about 3 bottles of glass beer, if you use a new bottle, the glass bottle price will be 1.8 yuan for 0.6 yuan, and the PET bottle will be 2.0 yuan. The difference between the two bottles is 0.2 yuan. 1.6L
Only one set of bottle and one bottle cap are used, and three glass bottles are used; the new glass bottle also goes through the bottle washing machine, which consumes electricity and consumes steam. The PET bottle washing machine can be used to stop the operation. Only a few fans with very low power can be sent to the wine machine. The energy consumption can be reduced by a large amount; the transportation cost can be reduced by more than 40%, especially bottled wine and glass bottles. The weight accounts for more than 40% of the gross weight of the beer, and a 1.6 liter PET triple layer bottle is only 72 ± 1 gram. According to the results of the accounting, if all new bottles are used, the PET bottles and glass bottles will have a similar cost. ?
The use of PET beer bottles is conducive to environmental protection, can reduce the amount of sewage treatment, a bottle washing machine of 24,000 bottles per hour, according to the bottle washing machine instructions, each bottle of water consumption 0.5 liters, the lowest hourly water consumption 12 cubic meters, the daily water consumption must also be above 24 cubic meters. The workshop's production environment will be better. Personally think that PET bottles are indeed the development direction of beer packaging technology, and it is also a revolution of beer packaging technology.
PET bottles completely replace glass bottles in the beer industry, which requires the simultaneous development of the beer packaging machinery industry, especially the development of long tube filling machines that are suitable for PET bottle filling technology requirements. Consumers need to have a cognitive process for PET bottled beer. They need the support, advocacy and guidance of relevant industry units and need the joint efforts of the beer industry.
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