The development history of packaging bags

　　The commodity of the packaging itself is becoming more and more obvious. It has become a special product that is no longer attached to the production of commodities, and a widely used product that all commodities are inseparable from.

　　Chinese scientists have developed an environmentally friendly plastic bag made of electrolytes. This environmentally friendly plastic bag can not only be decomposed harmlessly, but also dissolves in water.

　　According to scientists' explanations, it takes hundreds of years for products made of common polymer plastic materials in life to be completely decomposed and will exist on the earth for hundreds of years.

　　This new environmentally friendly plastic bag will not release harmful substances during the decomposition process, and can even be decomposed into natural substances that insects love, which is of great help in protecting the natural environment.

　　According to the production process, it is often divided into plastic packaging bags and composite packaging bags.

　　Classified by raw materials: high pressure polyethylene plastic bags, low pressure polyethylene plastic bags, polypropylene plastic bags, polyvinyl chloride plastic bags, etc.

　　Classification by shape: vest bag, straight bag, three-dimensional bag, square bottom bag. Sealed bags, plastic bags, special-shaped bags, etc.

　　Plastic bags include plastic woven bags and plastic film bags. The former has the characteristics of light weight, high strength, corrosion resistance, etc. After adding plastic film lining, it can be moisture-proof and moisture-proof; the load capacity of light bags is below 2.5kg, the load capacity of medium bags is 25-50kg, and the load capacity of heavy bags is 50-100kg. The latter's light-duty bags carry a load of more than 1kg; medium-sized bags carry a load of 1-10kg; heavy-duty bags carry a load of 10-30kg; container bags carry a load of more than 1000kg.

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