Online pre-stretch wrapping machine, mainly applied to production is large, modern and more efficient logistics operations, and meet the packaging requirements of lighter or heavier goods. According to the actual needs of different products and the site, customized packaging systems, automatically sensing, packing, and delivery in the whole process, conveyor idlers, belts, chains can be used in different forms, such as automatically on a broken membrane bodies may realize unmanned operation. Is now widely used in food, beverage, pharmaceutical, chemical, pulp and paper, building materials and other industries.