Sealed Air (Sealed Air, crosslinked film production, R & D leader), the food packaging brand, the vacuum shrink packaging, is a high barrier film for beef, pork, mutton, veal, poultry, seafood, dairy products and smoked and processed meat.
The vacuum shrinkable packaging of Cryovac is characterized by high shrinkage and high barrier property. It can prolong the preservation time of fresh meat, expand the logistics radius of fresh meat, bring green innovation to meat products, and meet the goal of building sustainable development society in China.
First, green innovative packaging conforms to the 3R principle
The green innovation brought by Cryovac vacuum packaging is reflected in the following aspects:
1, reduce the total energy consumption of the food supply chain
Under natural preservation conditions, the shelf life of fresh meat is from several hours to several days. In order to extend the shelf life of meat, it is usually treated by freezing, pickling, high temperature sterilization, and adding preservatives. This treatment will change the flavor and taste of fresh meat, and additional processing will consume more energy and resources. According to statistics, in the whole supply chain of meat production, packaging and consumption, the consumption of energy in packaging is 4%, food production itself is 63%, retail and transportation account for 6%, and consumers' cooking accounts for 27%. Through high shrinkage and high barrier property, the vacuum shrinkable packaging of Cryovac Ni can prolong the shelf life of fresh meat, reduce energy consumption and improve the efficiency of energy use.
Reducing the greenhouse gas emissions from food deterioration is considered from the GHG (Green House Gas, greenhouse gas) emissions, if the 250x400mm fast guard (Cryovac's) vacuum contraction package used for packaging 1kg raw meat is 1 units, then the GHG discharge coefficient of the production of 1kg pork is more than 100, and the production of GHG of 1 kilograms of beef is produced. More than 300. 2% of raw and fresh meat in the storage and transportation, sales process due to deterioration loss, its impact on the environment will exceed the production and use of vacuum shrink packaging. Therefore, if meat is spoiled by improper packing methods, it will generate huge greenhouse gas emissions. Cryovac vacuum packaging has extended the shelf life of fresh meat and extended the shelf life of fresh meat to several weeks and longer periods. Some products, such as fresh beef, can be extended to more than 3 months, thus reducing the loss of raw meat during transportation, storage and sales, reducing greenhouse gas emissions and reducing the impact on the environment.
2, improve the efficiency of distribution and reduce the cost of logistics
In addition, from the production, sales and logistics of fresh meat, the vacuum shrinkable packaging of the Cryovac is extended the storage time of fresh meat, the concentrated slaughter of fresh meat and the distribution of the fresh meat, and the expansion of the logistics radius of the raw meat industry. At the same time, the characteristics of Cryovac's vacuum shrink packaging make the factory be able to make large-scale production, and can be concentrated in order to make it easier to plan, reduce the number of distribution, optimize inventory management, and greatly improve the efficiency. The average transport cost of vacuum packaged meat is lower than that of the carcass. Compared with the carcass, the vacuum packed meat can be transported about 30% more per car, thus reducing the cost of transportation and logistics. For the retailer, it can reduce the loss caused by the shortage, reduce the demand for manpower, reduce the waste and loss caused by the uneven distribution of the white pig, save space and reduce the number of orders, but also increase the sales volume.
Two, excellent packaging performance
The green innovations brought by the vacuum shrinkable packaging of Cryovac's is benefited from its unique high shrinkage, high barrier, good thermal sealing performance and toughness, and improved seal strength and bulk strength by unique electronic crosslinking technology.
1, high contractility
In the process of packaging, the high shrinkage rate of the vacuum shrinkable package of the Cryovac detergent to minimize the blood water exudation caused by the folds of the bag, improve the appearance of the product and prolong the shelf life of the meat.
2, high barrier
In the long-term storage of food, oxygen in the air is the main cause of food spoilage. The Cryovac vacuum packaging system has superior oxygen barrier properties, which minimize the contact between food and oxygen in the technical range.
3. Good thermal sealing performance
Fast sealing (Cryovac) vacuum shrink packaging has good heat sealing properties, so that food will not deteriorate due to air infiltration during long-term use.
4. Good toughness
The vacuum shrinkable package of Cryovac is good toughness, which prevents the packaging from the broken bones on the raw meat during the use and transportation, and further reduces the loss of fresh meat.
Three, material and structure design
Vacuum packaging bag is a high-tech product. It needs a number of comprehensive properties, such as low temperature toughness, anti piercing, wear resistance, oxygen resistance, heat sealing, shrinkage, transparency, gloss and printability. Fast energy (Cryovac) vacuum shrink bag excellent energy from the company's special materials technology.
The Cryovac vacuum compressor bag is a multilayer co extruded film. In the thickness of tens of microns, the functional layers, such as the antiwear outer layer, the oxygen barrier layer, the piercing layer and the sealing layer, are integrated (from the outer layer to the food contact layer), and the sealing strength and the strength of the body are improved by the unique electronic crosslinking technology.
The wear-resistant outer layer provides basic protection for the packaging bags to prevent the appearance of the products caused by friction in the course of transportation and use. At the same time, the antiwear outer layer is printable.
The Cryovac vacuum shrinkable packaging bag uses PVDC as the oxygen barrier layer. The patent extrusion technology of Hyatt solves the difficult problem of the poor thermal stability of the PVDC resin itself and difficult to process, and realizes the multi layer co extrusion of the high barrier film of the PVDC, thus providing a stable high barrier property in the high humidity environment. At the same time, the stable processing technology gives the film good transparency, without the yellowish luster of the same PVDC barrier film due to thermal degradation.
At the same time, Sealed Air developed high strength polyolefin as an anti piercing layer. This material has more than conventional transparency and flexibility.
Four. Proprietary extrusion technology
The exclusive multi-layer co extrusion technology of Sealed Air makes the functional layers perfectly combined in the thickness of tens of microns, improving the production speed and reducing the waste loss of the waste edge of the film. Proprietary technology endows the film with stable shrinkage and does not shrink due to shrinkage at normal temperature (Transportation). It has high shrinkage at specified temperature when used.
Five. Safety and safety of packaging
Sealed Air ensures that the raw materials and final products are in line with the local laws and regulations. The production of Sealed Air is strictly GMP standard. The auxiliaries and all kinds of resin raw materials used in the vacuum shrink bag of Cryovac's detergent conforms to the hygienic standard of the Chinese national standard, and the finished product conforms to the GB9683 hygienic standard.
Six, disposal of waste and energy recovery
Cryovac vacuum packaging is mainly treated by incineration (energy recovery) and landfill disposal. The greenhouse gas emission value (GHG) of the vacuum shrinkage bag is 60% of the same PA/EVOH product. The other effects of the vacuum bag on the environment are 2/3 of the same kind of PA/EVOH products (20% landfill /80% incineration, test standard ReCiPe Endpoint (H) V1.05 / Europe ReCiPe H/A / Weighting). The energy generated by the Cryovac vacuum compressor sack incineration power generation is slightly higher than that of the similar PA/EVOH product, which is suitable for energy recovery.
Seven. Application examples
A food company in Yunnan is mainly engaged in the production and processing of ham and cooked meat products. The ham products are packed in traditional packaging NY/PE vacuum composite bags. Because of the weak penetration resistance of the bags, the breakage rate in the transportation process is up to 20%~30%, and the surface mold, odor and oxidation discoloration of the damaged ham products are easy to occur after the breakage. The return rate is more than 10%. The NY/PE vacuum bag after packing has been clinging to the meat, but there are still many superfluous plastic folds covered on the surface of the product, easy to produce capillary phenomenon, suck out and store the oil that exudate after the oxidation of fat, and affect the appearance and shelf life of the product. The quality of the food company has been extended for 3 months after the use of the high barrier vacuum high barrier packaging bag to pack its ham and other products. It effectively reduces the loss in transportation and storage, and does not return the problem of return, and the loss is almost to zero.
A food company in Yantai is mainly engaged in meat processing and marketing. In response to market demand, a high-quality low-temperature meat product ham should be developed. The product's sales mode is sliced and weighed, and it needs to be distributed to about 1000 Direct stores. The shelf life requirement is higher (0~7 C, 10 days). The product was originally packaged with PE (commonly called fresh-keeping film) with paper packaging. Consumers can't see the product intuitively and easily cause customers to question and worry about the hygiene of the products. After trying Pouch and PE film, the problem of oxidative discoloration and short shelf life of ham can not be distributed to all direct stores. In view of the above problems, the high barrier shrinkage bag is recommended to the customer for the product test. The high oxygen resistance and contractility of the shrink bag not only satisfy the customer's requirement for the warranty period, but also the beautiful appearance is more pleasing to the senses. Sales of customers have been greatly improved since they were used.