Pressure vessels are special equipment, and the state implements a system of manufacturing qualification licensing and compulsory supervision and inspection of product safety performance for pressure vessel manufacturers and users. For the pressure vessels manufactured by overseas enterprises for domestic use, the overseas production enterprises must first obtain the "Boiler and pressure vessel Manufacturing License of the People's Republic of China" issued by the State Administration of Quality Supervision, Inspection and Quarantine before import. Since 2012, Zhangjiagang Bureau has seized 3 batches of imported pressure vessels without manufacturing licenses, which have been destroyed according to law. In this regard, the inspection and quarantine department reminds relevant enterprises, when importing mechanical and electrical equipment should pay attention to whether the pressure vessel is entailed, if the pressure vessel with a waste pressure vessel or can not provide a valid qualification certificate, it must be removed in time before overseas shipment to ensure that it meets China's safety, health, environmental protection and other mandatory requirements.
Mainly used in food industry, chemical industry and so on. Convenient for large vehicles to carry out integrated mass transportation. The use of container bag transportation can better package and transport the product, and there will be no vehicle directly installed powder, and the scene of blowing in the wind during transportation. The use of container bags can also be better convenient loading and unloading. It can reduce a lot of burden on the transportation staff. The container bag is manufactured and processed with polypropylene as the raw material, and then some raw materials with stable properties are added to fully process and manufacture, so that it becomes a series of very thin films. The diaphragm is then cut into silk either mechanically or with a knife. In processing, high strength and low elongation PP raw silk is made, and then woven and coated into a plastic woven fabric base cloth, and stitched together with accessories such as suspenders to make tons of bags.
Ton bags, also known as container bags, as export packaging, to ensure that the export goods in the loading and unloading, transportation and storage process to effectively protect the loaded goods, safe and intact transport the goods to the destination. Therefore, the design of ton bag manufacturers must meet the four main points, that is, safety, storage, usability, and tightness. Because of its good tensile strength, low price and convenient transportation, tons of bags are widely used in the packaging of cement, chemical raw materials, fertilizers, minerals, grain, sugar and other powder material products, this container bag packaging has been increasing year by year in recent years. Ton bag manufacturers should consider the packaging volume, the weight of the load and the number of packaging units in the design, but also consider the distance of transportation and the number of handling times, which means of transport and transportation methods. Pay attention to the use of anti-violet agents and the selection of materials in the production process. The effect of substrate coating process and sewing process on the sealing property should be considered.