In frozen food packaging, how does automatic packaging film for frozen food prevent bacterial growth and ensure food hygiene?
Publish Time: 2024-11-26
In frozen food packaging, automatic packaging film for frozen food uses a variety of technical means to prevent bacterial growth and ensure food hygiene and safety.1. Air permeability controlChoose appropriate oxygen permeability: Automatic packaging film for frozen food usually chooses materials with appropriate oxygen permeability to prevent excessive oxygen concentration inside the package, thereby inhibiting the growth of aerobic bacteria. Films with low oxygen permeability can effectively reduce the entry of oxygen into the package and extend the shelf life of food.Reasonable air permeability: Appropriate air permeability can also help release moisture and gas (such as carbon dioxide) in the package to prevent the formation of high humidity and high carbon dioxide environment inside the package, thereby reducing the possibility of bacterial growth.2. Barrier propertiesHigh barrier materials: Automatic packaging film for frozen food usually uses high barrier materials, such as polyethylene (PE), polypropylene (PP), nylon (PA), ethylene-vinyl alcohol copolymer (EVOH), etc. These materials can effectively prevent the invasion of external air, moisture and bacteria, and maintain the sanitary environment inside the package.Multi-layer composite structure: In order to improve the barrier properties, the packaging film usually adopts a multi-layer composite structure, combining the advantages of different materials, such as the composite of PE and PA, which not only ensures good barrier properties, but also takes into account flexibility and mechanical strength.3. Antibacterial materialsAdding antibacterial agents: Some automatic packaging films for frozen food will add antibacterial agents such as silver ions and titanium dioxide during the production process. These antibacterial agents can form an antibacterial environment inside the packaging and inhibit the growth and reproduction of bacteria.Antibacterial coating: Some high-end packaging films are coated with antibacterial coatings. These coatings can form an antibacterial barrier on the packaging surface to prevent bacteria from attaching and spreading.4. Aseptic packaging technologyAseptic environment: Aseptic packaging technology is used in the packaging of some high-end frozen foods. The entire packaging process is carried out in an aseptic environment, including food pretreatment, packaging material sterilization, packaging operations, etc., to ensure that food and packaging materials are not contaminated by bacteria during contact.High temperature sterilization: In aseptic packaging, food and packaging materials are usually sterilized at high temperature, which can kill most bacteria in a short time and ensure the hygiene and safety of the inside of the package.5. Sealing performanceGood sealing performance: automatic packaging film for frozen food has good sealing performance, which can effectively prevent external bacteria from entering through the packaging gap. Packaging film with good sealing performance can form a closed environment and reduce the chance of bacterial contamination.Heat sealing technology: Heat sealing technology is usually used in the packaging process to ensure that the edges of the packaging film are tightly sealed without leaving gaps to prevent bacterial invasion.6. Storage conditionsLow-temperature storage: During the storage and transportation of frozen food packaging film, it is usually necessary to store it in a low-temperature environment. Low temperature can significantly inhibit the growth and reproduction of bacteria, further ensuring the hygiene and safety of food.Avoid contamination: During storage and use, the packaging film needs to avoid direct contact with the ground or other sources of contamination to ensure the cleanliness and hygiene of the packaging film.In summary, automatic packaging film for frozen food effectively prevents bacterial growth and ensures the hygiene and safety of frozen food through various means such as air permeability control, barrier properties, antibacterial materials, aseptic packaging technology, sealing performance, food safety certification and appropriate storage conditions.
