SPRING BAR

At present, the method of reciprocating sweeping pouring is generally adopted, the surface material
moves forward continuously at a certain speed, and the reciprocating sweeping pouring head continuously
sprinkles the PU material on the surface material. Its disadvantage is that the PU material pours on both sides
repeatedly and wastefully. It is easy to mix a lot of bubbles during pouring. There are some defects in the
product, such as bubble, different density distribution of core material and insufficient filling due to uneven
pouring. According to years’ production experience and repeated adjustment of production process, this
spraying bar is developed by adopting fixed pouring method. By improving the defects of traditional foam
spraying, the quality of sandwich panel can also be greatly improved