Classification and comparison of beverage packaging containers

With the rise of people's living standards, beverages have become a necessity for people's daily lives, and they have also made achievements in Wahaha, Red Bull, Coca Cola, Pepsi, and other industry giants. At present, there are a wide variety of beverage packaging on the market, basically covering plastic, glass, metal and paper packaging materials.

The following are several common beverage packaging and advantages and disadvantages:

1, mineral water packaging

The packaging requirements for mineral water are not contaminated by the odour of packaging materials and intruders. At the same time, the cost of packaging containers needs to be able to adapt to the needs of popular consumption.

In addition to packaging glass bottles, in recent years, polyoxyethylene bottles and high-density polyethylene containers (5 to 10kg per barrel) and plastic bottles (250g to 350g) have been used one after another, while the military has adopted plastic bags.

Soda packaging

Soft drinks belong to carbonated drinks. Some contain only carbon dioxide, and some contain ingredients such as juice, spices, and sugar, in addition to carbon dioxide. The amount of carbon dioxide in soda water varies. Ginger soda has a high carbon dioxide content of 4.5 volumes, while the juice soda contains only one volume of carbon dioxide (5 volumes of carbon dioxide solution requires 5 atmospheres, and the dissolved carbon dioxide concentration in the water is 1 percent).

The requirements of soft drinks for packaging are mainly resistance to internal pressure and maintaining the smell of soft drinks. The traditional use of glass bottles, recycling. The recovered empty bottles must be washed and disinfected, and the brand should be removed and relabeled. For this reason, some glass factories directly engrave the trademark pattern on the mold while blowing the glass bottle. The words and patterns on the surface of the glass bottle are projected to allow permanent reservation of the trademark; some of it is to burn the color pattern on the surface of the glass bottle. Fall off. Recently, a disposable lightweight glass bottle has appeared and is no longer recycled after use.

To sum up, the past two years of 10 years of soft drink packaging have the following trends: polyester bottles, plastic glass bottles (plastic glass bottles with high-strength ion resin, reduce damage, mainly used for recycling glass bottles), new Application of metal cans, new can lids (aluminum lids or plastic lids), and lightweight tins.

3, alcohol beverage packaging

Any beverage containing alcohol content, regardless of its content, is collectively referred to as an alcoholic beverage. Beers, wines, and a variety of high-alcoholic distilled spirits belong to this type of beverage.

Other non-blowing fruit wines and fruit sparkling wines can also be used to make sweet end-of-table fruit wines with apples, cherries, plums, black fall and tree poisons. Some dewy wines can also be made from pineapples, pears, pomegranates, citrus, grape oil, figs, dates and other fruits and honey.

All kinds of fruit wines are not suitable for metal packaging because metal will affect the aging, color and aroma of the wine, so most of them are still packaged in traditional glass bottles. The shapes and sizes of the glass bottles are extremely diverse and there are no uniform regulations.

From the perspective of the economic development trend of fruit and wine packaging, the larger capacity (1 to 2L) has been used in the "box in the bag" structure of the packaging, which is the plastic lining in the tray, there is a tap outside the box switch, easy access . White wines are packaged in paper/polyethylene composite containers. Red wines require shading and an aluminum box should be added to the composite material.

In the United States, fruit wines are packaged in plastic carton packs for travel by line passengers. Most fruits and sparkling wines are packed in glass bottles to withstand the pressure of carbon dioxide.

In recent years, the packaging improvement of spirits has mainly been in the structure of bottle caps. The conventional cork stoppers are gradually replaced with plastic screw caps and metal screw caps. The outside is sealed with a transparent or colored plastic shrink film to serve as anti-theft packaging. The gift packaging of spirits and whiskey brandy wines uses a luxurious packaging and decorating structure, which makes them rich and powerful and thus can promote sales.

Since 1978, Japanese manufacturers have developed solid powdered alcoholic beverages that use composite flexible packaging. When drinking, only the solid powder is poured into human water to become an alcoholic beverage. Domestic research and development of tin cans packaging alcoholic beverages

The regulations for the management of alcoholic beverages in foreign countries stipulate that the labeling on alcoholic beverages must include descriptions: 1 trademark name; 2 categories and models; 3 names and addresses of bottlers and packers; 4 ethanol content; Net Weight (Metric Unit) 6 Importers must have the name and address of the importer.

Attachment: Comparison of beverage packaging materials

Polyester bottle

Among the plastic bottles, polyvinyl chloride bottles are more commonly used for packaging liquid beverages such as juice and dewy wines, as well as soy sauce, vinegar, and edible oils. Polyvinyl chloride bottles have better transparency and chemical stability, and the vinyl chloride sheets must be controlled within the limits allowed by the hygiene regulations.

In recent years, due to the innovation and development of plastic container molding process technology, new processes such as stretching (orientation) blow molding technology, extrusion and blowing, and injection and blowing have been developed. Polyvinyl chloride bottles made by the stretch blow molding process are more improved in terms of performance than unstretched orientation.

However, due to the low heat resistance of polyvinyl chloride bottles, the requirements for hot filling cannot be met, and at the same time, the mechanical strength is also low, and the compressive strength of packaged carbonated beverages is difficult to perform. In this respect, compared with polyester bottles, There is less. Therefore, the development speed of polyester bottles is faster, especially for large-capacity bottles. The strength and toughness of polyester bottles is the unmatched advantage of various plastic bottles.

In terms of bottle process performance, PVC bottles are prone to defects such as uneven thickness and stress cracking during stretch blow molding. They are not suitable for producing large-capacity bottles. Polyester bottles are very suitable for injection-blow processes. Capacity can reach 10L or more.

Recently, polyester bottles have been used for whisky packaging. Lightweight and not easily broken is its biggest advantage. In the aircraft-like class, polyester bottle-wrapped whisky was officially sold.

Metal cans

Fruit juices and fruit juice concentrates are often packaged and transported in metal cans, mainly tinplate cans, and can also be packaged in paint cans, especially those with higher acidity. The filling process is hot filling, aseptic filling and cold filling after pasteurization. Products containing sulfite (or sulfur dioxide as a preservative) should not be packaged in metal cans, because metal containers easily react with sulfur to produce sulphides, which increase the content of tin and iron ions in fruit juice beverages, causing deterioration and discarding of beverages. In recent years, there are also commonly used aluminum two easy-open canned fruit juice beverages.

In the conventional hot filling process, the juice is first degassed to increase the stability of the aroma of the fruit juice beverage, and then pasteurized to kill the microorganisms and inactivate the enzymes. After cooling, it should be closed immediately without cooling. In this way, after cooling, the liquid in the tank shrinks, resulting in a low vacuum level in the remaining space. At this time, the oxygen content is the lowest, and the metal surface is also prone to corrosion.

If cold filling is used, the sulfur dioxide should be filled prior to sealing to replace the oxygen in the remaining space and the same effect can be achieved. o Frozen concentrated orange juice usually uses a metal can or paper/plastic composite with a capacity of approximately 178 ml. Can packaging and shipping. There are many structural forms of jars, including hand-drawn metal cans and paper combination cans. Concentrated juices are generally not pasteurized to maximize their umami taste. If the concentrated juice is not frozen, its storage period will not be very long and it will be easily deteriorated.

Paper package

Pasteurized juices are packaged in polythene-coated cartons. The results are very good. Of course, such packaged juices are stored refrigerated, and their shelf life can be appropriately extended. If you take sterilized packaging, take hot filling or non-sterile packaging of juice. Its quality is more delicious and delicious, and the storage period is longer.

Rapid pasteurization (for example , 15 seconds at 85 °C ) kills yeast and pectinase in the juice and stabilizes the quality of the juice. Non-sterilely packaged fruit juices need to be stored in frozen storage, usually at a temperature of about 2 °C . Fruit juices and fruit juices with preservatives are also preferably refrigerated. However, the antioxidant effect of sulfur dioxide has shown that the circulation of these products at room temperature is still entirely feasible.