• Categories:Industry Trends
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• Time of issue:2019-04-10 16:06
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(Summary description)Not long ago, a French wine manufacturer launched a wine product in the United States using Tetra Prisma packaging. The package has a capacity of 1L and is recyclable for easy carrying. Compared to traditional glass packaging, this package can save up to 90% of the cost. Due to its light weight, the cost of transportation is also greatly reduced. This example shows that flexible packaging is gradually penetrating into the field of traditional rigid packaging and poses a certain threat to rigid packaging. Of course, if you really want to replace hard packaging, flexible packaging needs to go a long way, especially in the beverage industry. However, industry insiders have realized this inevitable trend, that is, plastic is gradually replacing the status of glass and metal. The threat from plastic. Plastic rigid packaging has three major advantages: solid, lightweight and low cost. If it is transparent, it will be enough to match the glass. In fact, most of the condiments originally packaged in glass bottles have been converted to PET bottles. Not only that, plastic hard packaging is widely used in products such as vegetable oil and bottled water. Transparency is a very important feature. Consumers want to see the quality of the contents through packaging, especially for vegetable oils. The most typical representative of plastic rigid packaging is a thin plastic bottle. This bottle accounts for almost half of all plastic packaging on the market, covering vegetable oil and bottled water. The main reason why thin-walled plastic bottles are so popular is low cost. Manufacturers use this plastic bottle to meet consumer demand for price. Plastic packaging has many advantages. For example, plastic packaging can be designed in a multi-layer structure, and even an aluminum foil layer can be added, which makes the function of a single package rich. But this does not meet the 3R principle, especially the last R - recycling. How plastic bottled beer is filled with oxygen-sensitive beverages in transparent plastic bottles is the focus of current technology research and development. The PET bottle weighs only 1/7 of the glass and does not break. It has achieved great success in soft drink packaging, especially for 2-3L bottles. In recent years, small-capacity, single-drink beverages have slowly abandoned the original glass or canned packaging, and instead used PET bottles. However, the road that beer wants to change from glass bottles to PET is extremely difficult. The bottle must have a strong barrier to carbon dioxide and oxygen, and must be transparent and strong. The unit cost of PET bottles is twice that of ordinary glass bottles, and it has high gas permeability, especially oxygen and carbon dioxide. The shelf life of beer depends on the longest time its taste can be maintained, and the infiltration of oxygen directly affects the taste of the beer. In addition, a reduction in the degree of carbonation can also result in a change in the taste of the beer. At present, the research focus of plastic materials is on how to improve the barrier properties of plastic bottles to oxygen and carbon dioxide, and how to extend the shelf life of plastic bottled beer. Another major obstacle is the way beer is filled. At present, 80% of the world's beer is disinfected by tunnel pasteurization. The temperature at which this process is used is not necessarily acceptable for PET bottles. At present, there are very limited types of plastic bottled beer, and only a small amount of beer can be seen on the market. Of course, technology developers will not easily admit defeat in the face of challenges. Through painstaking research, they launched a number of plastic bottled beer solutions to meet the requirements of manufacturers and consumers. However, none of these existing solutions can fully meet the needs of the market, but each has its own strengths. Different products and different markets require different solutions, and the products are often driven not by technology but by market. Barrier coating technology extends shelf life and improves oxygen barrier properties, while active multilayer bottles offer high processing flexibility and oxygen barrier properties, but have a short shelf life. In addition, regardless of the oxygen barrier capacity of the bottle, sealing is still a big problem. For small-volume bottles, the oxygen infiltrated from the mouth of the bottle has a great influence on the taste of the beer, so that efforts to spend on the barrier of the bottle wall are all in vain. Currently available caps are metal crown caps, plastic caps and aluminum caps. Plastic bottled beer requires a complete combination of the bottle and the cap, so the cap with high barrier properties is also in need of development. From the current development situation, glass bottled beer will still be used for a while, and the future of plastic bottles is also very optimistic. With the efforts of R&D personnel and the continuous improvement