Detergent stand-up bag is now the most popular liquid packaging bag, detergent stand-up bag is a plastic compound flexible packaging, with high barrier and high temperature resistance, easy to open, not easy to break, more conducive to repeated application, use is also more convenient. Compared with some packaging products on the market, the general use of the composite film, PE film product structure, with high strength, impact, impact resistance, good barrier performance and so on