With the rapid development of Chinas economy, the purchasing power and consumption desire of domestic residents are gradually increasing, and the consumption concept will further improve the quality of life. Beverages, wine, edible oil and flavoring liquid food demand will also be with the development of economy and the improvement of peoples living standards steadily, especially the consumption capacity in rural areas will greatly enhance the consumption of beverages and other liquid food, commodity economy, commodity packaging bag itself is also more and more obviously, it has become a kind of special product is no longer attached to the production of goods, widely used for all goods, products cannot do without,

Food packaging bag is in direct contact with food, and food containers for containing protective film, so we should use food grade plastic film production, food packaging bags for packaging materials is generally more than two layers, the different characteristics of the composite materials together, in order to improve the air permeability and moisture permeability of packaging materials resistance, oil resistance, water resistance, chemical resistance, the insect resistant, dustproof and anti microbial isolation, light, smell, odor smell, mechanical strength and processing applicability and heat resistance and cold resistance, impact resistance is better, and has good decorative effect and printing. Food packaging composite packaging materials, eventually made into a variety of packaging bags can be used. The bag has two ways, one is the use of packaging film manufacturers use in automatic packing machine for filling, and a variety of molding packaging bags; another is due to a variety of packaging bag bag making mechanism after loading the contents. As a result of professional bag making, precise control, beautiful bag, bag change, bag type, so in a lot of cases, first made into bags.

All kinds of food packaging composite packaging bag production process from planned vs. design vs. printing vs. composite vs. aging vs. cutting vs. bag vs. vs. finished product inspection, mainly divided into: plastic bags, aluminum foil bags, aluminum foil bags, aluminum foil, aluminum foil composite packaging film packing bag, paper plastic composite packaging bags and special bags, packaging bags, shape sucking mouth organ bags, in sealed bags, three side sealing bag, four sides sealing bag, zipper bags, pouches, bags of yin and Yang, the scope of its application can be divided into: general food packaging bags, food packaging bags, vacuum inflatable food packaging bags, food packaging bags, cooking boiled food packaging bags and functional food packaging bags etc..

The development of the packaging bags has gone through four distinct stages: the primitive packaging stage, the big packing bag stage, the small packing bag stage, and now gradually enters the new phase of the environmental protection (green) packing bag.

From a variety of colorful packaging bags, we can find that the current commodity packaging is not only the pursuit of practicality, commercial, and its artistry can not be ignored. As the mainstream technology of packaging and printing, gravure printing, especially gravure printing, should also strengthen exchanges, and the simultaneous development of packaging.

Food packaging complex packaging bags of various sizes, specifications, therefore, design and production personnel often ignore the bag making method, but the finished product packaging is not satisfactory, and even become waste. Experience tells us that only when we understand the types of commonly used packaging products, we can give full play to the design ideas, to prevent inconsistent with the bag making works, and design a practical and perfect package of various finished products.