Food plastic packaging is one of the most active branches in the field of packaging materials. With the continuous improvement of people's demands for quality of life and food safety, more and more requirements and higher and higher standards have been put forward for the function of food packaging. Under this background, the development of new varieties of plastic film for food packaging is also active in various countries around the world to maximize the market's individual needs.
Identification of packaging films for genetically modified raw materials
France introduced two new packaging films processed from ordinary polyvinyl chloride (PVC) materials to the market that can be used to identify the use of genetically modified raw materials for packaged foods. If soybean oil is processed from genetically modified soybean raw materials, it can be clearly identified even for soybean foods containing only 5%-10% of the genetically modified components.
At present, this kind of film is mainly used for packaging non-genetically modified soybean planted in southern Europe as a follow-up inspection, and it is guaranteed that it cannot be blended with genetically modified soybean raw materials during circulation.
BOPE security film for salt packaging
Shandong Xinlik Plastics Co., Ltd. has successfully developed a special BOPE security film for packaging. The key technology is to add several kinds of nanoscale special additives to the production raw materials, and then obtain it through a gradual biaxial stretching process. Just take the money detector and take a picture, the colorless packaging film will emit bright light, which can play a good anti-counterfeiting effect on the iodine-added food. The film also has the advantages of good barrier properties, UV resistance, and safe use.
Salad oil anti-UV shrinkable transparent film
The anti-ultraviolet (UV) shrink film imported and developed by Kerry Grain & Oil of China is used to package salad oil, which can protect vitamin components in oil from ultraviolet radiation and protect nutrients from damage. The film is a packaging machine 'target=_blank> transparent film, crystal clear and translucent, to overcome the inconvenience caused by the use of non-packaging machine's target=_blank>transparent film material packaging to obstruct the UV line. The film utilizes a variety of advanced technologies such as spectrum analysis, nanotechnology, nutrition, and hygiene to incorporate a substance that effectively absorbs ultraviolet rays in the packaging material, that is, an ultraviolet sensitized granule that protects vitamins in the oil. Destroyed.
Dedicated double laminated film for packaging meat
France introduced to the market a double-layered laminated film dedicated to the packaging of meat. The outer layer is a high-density polyethylene film with special structure and properties, and the inner layer is edible paper. The superimposed bilayer membrane is translucent. The film is very thin and only 12 microns thick, but it is strong, safe and non-toxic and can be directly contacted with meat. Packaging the meat with the film can solve the problem that the common material packaging meat can be immersed in bleeding and grease, is not easily separated from the meat, and causes the surface to form a hard skin, and can maintain the original color, fragrance and taste of the meat.
Suitable for microwave heating special coating film
Switzerland has recently developed, produced and introduced to the market a special cover film for microwave oven heating – Simkashin. The film is not only resistant to high pressure, but also has good anti-fog properties. This cover film is used for heating various dishes in a microwave oven and can be quickly and conveniently heated for eating. Dishes made of various vegetables, fish, poultry, and meat can be directly used in microwave ovens under pressure, using this special film lidding material (polypropylene for lidstocks) when heated in microwave without the need of adding liquid excipients. Microwave cooking. During the heating process, the pressure generated by water vapor can be safely released through the membrane.
Can detect special packaging film for pathogens
Canada developed a packaging film that can detect pathogenic bacteria, using protein-based antibodies. The packaging film can detect Salmonella, E. coli, Listeria and other pathogens. When contacted with contaminated foods, the film undergoes a color change reaction to determine the presence or absence of bacterial contamination and prevent the deterioration of the food. (Li Jun)
Source: China Packaging Industry