Development prospect of flexible packaging plastic

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Industry trends; Development prospect of flexible packaging plastics

transition of flexible packaging

as a traditional packaging form, glass is favored by high-end products. But in reality, plastic seems to be more popular for cost reasons. The application scope of plastics has been expanding and gradually extended to the field of traditional glass bottle packaging. Red wine is one example

not long ago, a French red wine producer launched a red wine product packaged with Tetra Pak PRISMA in the United States. The package has a capacity of 1l, which is recyclable and easy to carry. Compared with traditional glass packaging, this packaging can save up to 90% of the cost. Because of its light weight, the transportation cost is also greatly reduced. This example shows that flexible packaging is gradually penetrating into the field of traditional hard packaging, and poses a certain threat to hard packaging. Of course, if we want to really replace hard packaging, soft packaging needs to go a long way, especially in the beverage industry. However, industry insiders have realized the inevitable trend that plastic is gradually replacing glass and metal

the threat from plastics

plastic hard packaging has three advantages: firmness, light weight and low cost. If you add transparency, it is comparable to glass. In fact, most condiments originally packaged in glass bottles have been converted to PET bottles. Not only that, plastic hard packaging is widely used by vegetable oil, bottled water and other products. Transparency is a very important feature. Consumers want to see the quality of the contents through packaging, especially vegetable oil and other products

the most typical representative of plastic hard packaging is the plastic bottle with very thin wall, which accounts for almost half of all plastic packaging in the market, covering vegetable oil, bottled water, etc. The main reason why thin-walled plastic bottles are so popular is low cost. By using this plastic bottle, the manufacturer meets the price requirements of consumers and uses thermoplastic elastomer in the feet

plastic packaging has many advantages. For example, plastic packaging can adopt multi-layer structure design, and even add aluminum foil layer, which enriches the functions of a single packaging. But this does not conform to the 3R principle, especially the last R is recyclable

plastic bottled beer

how to fill oxygen sensitive beverages with transparent plastic bottles is the focus of current technology research and development. 6. Select the appropriate force value and gear and clear it. The weight of PET bottle is only 1/7 of that of glass bottle and will not be broken. It has achieved great success in soft drink packaging, especially l-capacity bottles. In recent years, small volume, single person ready to drink beverages have gradually abandoned the original glass or canned packaging and adopted PET bottles instead

however, it is extremely difficult for beer to change from glass bottle to pet. The bottle body must have strong barrier performance against carbon dioxide and oxygen, and must have the advantages of transparency and firmness. The unit cost of PET bottle is twice that of ordinary glass bottle. It has high permeability, especially oxygen and carbon dioxide. The shelf life of beer depends on the longest time that its taste can be maintained, and the infiltration of oxygen will directly affect the taste of beer. In addition, the reduction of carbonation will also lead to changes in beer taste. At present, the research focus of plastic materials is on how to improve the barrier performance of plastic bottles against oxygen and carbon dioxide, and how to extend the shelf life of plastic bottles of beer

another major obstacle is the way beer is filled. At present, 80% of beer in the world is disinfected by tunnel pasteurization. PET bottles may not be able to withstand the temperature of this process

at present, the types of beer that can be bottled in plastic bottles are very limited. What can be seen in the market is only small capacity beer used in some sports competitions and other occasions

of course, technology R & D personnel will not easily admit defeat in the face of challenges. Through hard work in product evaluation and label management, they launched a number of plastic bottled beer programs to meet the requirements of manufacturers and consumers. However, none of these existing schemes can fully meet the needs of the market, but each has its own advantages. Different products and markets need different solutions, and it is often not technology that drives products, but the market. Barrier coating technology extends the shelf life and improves the oxygen barrier performance, while the active multilayer bottle has high processing flexibility and oxygen barrier performance, but the shelf life is short

in addition, no matter how strong the oxygen barrier capacity of the bottle is, sealing is still a big problem. For the small volume bottle, the oxygen infiltrated from the bottle mouth has a great impact on the beer taste, so that the efforts spent on the bottle wall barrier are in vain. Currently, the caps that can be used include metal crown caps, plastic caps and aluminum screw caps. Plastic bottled beer needs a full set of solutions that combine the bottle body and bottle cap, so bottle caps with high barrier performance also need to be developed

from the current development situation, glass bottled beer will still be used for some time, and the future of plastic bottles is also very optimistic. With the efforts of R & D personnel and the continuous improvement of technology, plastic bottled beer will have a good development prospect

the development prospect of plastics

the characteristics of plastics determine that it is non renewable, even for plastic hard packaging. At present, there are various innovative technologies and material applications in the field of plastic hard packaging, including blow molding, injection molding, extrusion, thermoforming and vacuum molding

pp is a kind of raw material worthy of attention for plastic hard packaging, which is suitable for various processing processes and applications. It can be used to process bottles, tubes, barrels and cans of various sizes. PP can be used for packaging food and industrial chemicals. PP trays can be used to pack fresh, refrigerated or frozen foods, such as salads, snack foods, etc

at present, the most commonly used plastic bottle material is PE, which is widely used in carbonated beverages, bottled water, fruit juice and personal care products

with the rise of plastic hard packaging, the resulting challenges make technicians work day and night. At present, they need to find a complete set of solutions for plastic bottled beer, including solutions to the problem of gas infiltration and the design of plastic bottle packaging that meets the taste needs of beer consumers. Carbonated beverages also encounter many problems when they are packaged in plastic bottles. Let's wait and see how these difficulties can be overcome one by one

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