Development of Packaging Bags
The development of packaging bags has gone through four distinct phases: original bags stages, the stage of big packaging bags, the stage of small packaging bags, and so far, it has gradually entered a new stage of environmental (green) packaging bags. With the development of commodity economy, the packaging of the commodity itself is also growing significantly, it has become no longer attached to the commodity production of special products, and it has become a kind of all goods are inseparable from the widely used products, packaging bags wholesale is gradually becoming a competitive industry . The country scientists have developed an electrolyte made of green plastic packing bags, this environmentally friendly plastic bags can not only be harmless decomposition, and this green plastic bags can also soluble in water. According to the explanation of scientists, the polymer plastic materials products need hundreds of years to a complete decomposition, and it will exist hundreds of years on Earth. The actual figures show that 80% used plastic bags end up with ordinary garbage that transported to the garbage Tin processing, only seven percent of the plastic is recycled and used again. This new environmentally friendly plastic bags in the decomposition process does not release harmful substances, but it can even decomposition favorite insect of the natural substance, play a great help to protect the natural environment.
Classification of Packaging Bag
According to different production process, packaging bag can be divided into aluminum foil bags and composite packaging bags. Plastic packaging bags is including plastic bags and plastic film bags. The former has a light weight, high strength, corrosion resistance and other features, to join the lining of the plastic film, it can be moisture-proof; the light bag load is usually 2.5kg or less, the medium-sized bag load is 25-50kg, heavy bag load is 50-100kg. The latter light bag load is more than 1kg; medium-sized bag load is 1-10kg; heavy bag load is 10-30kg; and the FIBC bag load is 1000kg or above.
Basics of Food Packaging Bags
Food packaging bag is a film container that is direct contact with food for storage and protection of food. Food packaging bag should be made of food-grade plastic film, which is generally have more than two composite bags. Food packaging should be marked the information: the name of the food, food ingredients, nutrients, performance standards, shelf life, storage methods, consumption, and manufacturer's information. According to their scope of application, food packaging bags can be divided into ordinary food bags, vacuum food bags, inflated food packaging bags, boiled food packaging bags, cooking and food packaging bags and functional food bags. And among them, the aluminum foil bags is the most common bags for the packing of cooked food.