For food packaging materials in China in terms of health, safety and environmental requirements

Packaging for food protection, prevent the food from outside microorganisms or other material pollution, prevent or reduce the oxidation of food and other adverse reactions. In many food packaging, plastic products and composite packaging materials possess weight status in the raising of the foot. Because of plastics and plastic composite material with other materials do not have advantage, therefore our country developing rapidly in recent decades, expect the 2 plastic packaging market will also be increased by 7% ~ 9%.
Under the new situation, the food market competition much will depend on packaging quality competition. Used in food packaging materials must have appropriate barrier property, such as oxygen demand high resistance and resistance oily grease food; Dry food demands high resistance to wet; Aromatic odor food demands high resistance; And fruits, vegetables, fresh food packaging has a certain amount of oxygen, carbon dioxide and water vapour permeability; Packing should be have good mechanical properties, mainly including the tensile strength, tear resistance, high impact strength, etc.; Have good chemical stability and should not be within and no chemical reaction occurred in the food to ensure food safety.
In addition must have the high temperature resistance, is suitable for the high temperature and low temperature disinfection of food storage, etc. Because the plastic material itself has a lot of defects, such as environmental pollution, its temperature resistance and barrier property is better than the overall problem such as metal and glass glass container, the rapid development of food industry has to chemical industry, especially the plastic products industry puts forward a new topic.
New type of high barrier property of plastic has been widely used abroad, domestic also has introduced the technology. Use high strength and high barrier property of plastic can not only improve the protection of food, and the same amount of food can reduce the plastic packaging with quantity, even can be repeated use. For high barrier property protection of processed foods and vacuum packaging, inflatable packaging, etc., are to be packed in composite materials. In the multilayer composite material must have at least a layer of high barrier property of the material.