１、Film blower machine down-run air ring is usually located below the die head of the extruder and cools and shapes the extruded melt by blowing downward. The main function of this wind ring is to make the melt cool quickly after leaving the die head to form a stable film form.

２、Film blower machine down-run air ring cools the wind ring and melt through an internal water circulation system. Water flows inside the wind ring and reduces the temperature of the melt through heat exchange, thereby improving the quality and production efficiency of the film.

３、Film blowing machine downward blowing air ring has a better cooling effect, higher film transparency and uniformity, and can accommodate higher production speeds. It is often used in applications that require high-quality films, such as food packaging, medical packaging, etc.

４、Different manufacturers and suppliers may use different terms to describe similar devices. Therefore, in specific technical literature or product descriptions, Down-run air ring,air rings, or other similar terms may be used to refer to the same type of equipment.