What are the protective performances of food packaging?

 

Nutrition and safety (hygiene) are natural attributes of food, which embodies the practical performance of the food, but the food and very perishable, so the basic characteristics of food packaging is the need to ensure food and nutrition in the process of storage and distribution, the quality of health and quality of flavor. Different food deterioration due to different reasons damage and performance requirements for protective packaging is not the same, but the basic requirements generally include the following: a)Rigid packaging requirements has a certain toughness and strength, in order to ensure safe food storage. b)Adaptability, means shall be suitable for the needs of various techniques for food packaging, such as adaptation frozen, pasteurized, special needs, chemical corrosion, radiation sterilization and salts, sugars and other pickled. c)Health and safety requirements of packaging containers pollution, disease-causing bacteria do not exceed the health sector. Packaging materials, non-toxic , does not react chemically with the food, the material should be non-toxic after aging, toxic decoration printing inks; material and the total content of the resolved food substances like solvents harmful heavy metals in particular not more than national regulations. d)Barrier packaging including moisture, gas and aroma barrier properties. The packaging material should prevent the penetration of water vapor, gas or vapor barrier has full or minimal permeability to prevent oxygen from entering the packaging to prevent smell emanating from packaging, food packaging to prevent water evaporation and water vapor into the outside . From the viewpoint of food packaging, aroma retention is important, it is need to contain food hydrocarbons, aliphatic esters and other substances take different techniques. e)Shading is mainly for greasy food. For example, in order to prevent lipid oxidation and rancidity caused by ultraviolet radiation, generally require the use of aluminum foil, metallized film and paper packaging. 5)Packaging for powdered food, for example, many powder food products are packed in PE bags,PP woven bags or PP bags,the product powder and the generated electrostatic adsorption of the bag, the impact strength of heat-sealing of food packaging and sealing effect. In general, anti-static packaging of external law and internal anti-static method. External antistatic method is considered to prevent generation of static electricity can be charged using the characteristics of the material, so that the opposite side of the charged, so that mutual cancel or reduce the friction between the film and the pressure roller, and an increase in environmental humidity. Internal antistatic electrostatic method is a rapid production process leak, the main methods to improve the conductivity of the film material and increasing the humidity of the surface, such as adding an antistatic additive or coating during film forming. The additive is a surfactant, the conductivity mechanism is a hydrophilic group by means of adsorption of molecules of water in the air, the water forms a film-like conductive material in the plastic.

Nutrition and safety (hygiene) are natural attributes of food, which embodies the practical performance of the food, but the food and very perishable, so the basic characteristics of food packaging is the need to ensure food and nutrition in the process of storage and distribution, the quality of health and quality of flavor. Different food deterioration due to different reasons damage and performance requirements for protective packaging is not the same, but the basic requirements generally include the following:

a)Rigid packaging requirements has a certain toughness and strength, in order to ensure safe food storage.

b)Adaptability, means shall be suitable for the needs of various techniques for food packaging, such as adaptation frozen, pasteurized, special needs, chemical corrosion, radiation sterilization and salts, sugars and other pickled.

c)Health and safety requirements of packaging containers pollution, disease-causing bacteria do not exceed the health sector. Packaging materials, non-toxic , does not react chemically with the food, the material should be non-toxic after aging, toxic decoration printing inks; material and the total content of the resolved food substances like solvents harmful heavy metals in particular not more than national regulations.

d)Barrier packaging including moisture, gas and aroma barrier properties. The packaging material should prevent the penetration of water vapor, gas or vapor barrier has full or minimal permeability to prevent oxygen from entering the packaging to prevent smell emanating from packaging, food packaging to prevent water evaporation and water vapor into the outside . From the viewpoint of food packaging, aroma retention is important, it is need to contain food hydrocarbons, aliphatic esters and other substances take different techniques.

e)Packaging for powdered food, for example, many powder food products are packed in PE bags,PP woven bags or PP bags,the product powder and the generated electrostatic adsorption of the bag, the impact strength of heat-sealing of food packaging and sealing effect. In general, anti-static packaging of external law and internal anti-static method. External antistatic method is considered to prevent generation of static electricity can be charged using the characteristics of the material, so that the opposite side of the charged, so that mutual cancel or reduce the friction between the film and the pressure roller, and an increase in environmental humidity. Internal antistatic electrostatic method is a rapid production process leak, the main methods to improve the conductivity of the film material and increasing the humidity of the surface, such as adding an antistatic additive or coating during film forming. The additive is a surfactant, the conductivity mechanism is a hydrophilic group by means of adsorption of molecules of water in the air, the water forms a film-like conductive material in the plastic.

 

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