New Trends in the Development of Liquid Packaging Bags

Emerging transport packaging - liquid packaging bags are major reforms for traditional iron and plastic drum packaging. With the "three defenses" (moisture-proof, anti-corrosion, anti-seepage), "three resistance" (anti-pressure, anti-impact, anti-aging) outstanding advantages of the liquid packaging bag, to overcome the many defects of the iron drum and plastic drum packaging. Many of the materials originally packaged in iron drums and plastic drums can be directly changed to liquid flexible packaging bags. They have been promoted in developed countries and are emerging in the country. Their processes, technologies, and special equipment have become increasingly mature.

Liquid packaging bags can be used to fill asphalt, paraffin, rosin, solid alkali and other liquids at high temperatures, solid materials at room temperature and paint, paint and other thick materials, with low cost, high strength, acid, alkali and resistant High temperature (450t), moisture resistance, can prevent surface aging of packaged materials, anti-virus, anti-corrosion, stacking layer (above 20 layers) and neat, convenient transportation (especially railway and sea) and handling, and save storage and transportation volume It can be used for packaging of dangerous goods because it is convenient for filling and non-stick bags when opening, it can realize civilized production, used bags are free of harmful substances and easy to recycle.

The materials used for making liquid packaging bags mainly include kraft paper, plastic-woven cloth, non-woven fabrics, chemical fiber cloth, rubber, flat cloth made of cotton and linen, vinylon water-soluble yarn, composite film, and the like. , coated with high temperature anti-sticking material.

Recently, the use of various types of reinforced paper for the production of liquid flexible packaging bags with other materials has shown its characteristics, and has initially formed a trend.

The upper end of the liquid packaging bag is made into an open mouth, and a large-sized packaging bag is provided with a bottleneck-type charging port, which is sealed after filling. The bottom of the bag is sealed, with high firmness and tightness. The bag body can be reinforced with metal strips.

The liquid bags used for packaging construction petroleum asphalt, ordinary petroleum asphalt, and road petroleum asphalt have been promoted. Several domestic petrochemical companies have started to use them, and several bag-making companies have also developed several different types of asphalt packaging. Bags, some have formed industry standards, and some have corporate standards.

Recently, a packaging bag containing caustic soda and solid caustic soda has been developed.

Alkali with large water content, commonly known as caustic soda, is often transported by special tank trucks that are used by users when they are used in large quantities. After reaching their destination, they are discharged by pipelines. Or use iron drums. The successful development of solid caustic soda bags has changed the old look of solid caustic soda packaging, improved product quality, increased benefits, solved inconvenient problems in storage, transportation, and use, and reduced insecurity.

The use of packaging bags for filling thick objects also saves floor space and transportation costs for filling, cooling, storage.