PRS Cooling Introduction & possible problem

The cooling roller is used to cool down the film after horizontal drawing to ensure its stable shape and performance. It is one of the important roller types in the traction section. Usually, the traction section has three cooling rollers, chrome-plated, anti-stick and anti-corrosion cooling rollers.

1.After the TDO , the cooling roller is chrome coating,suitable line speed 600m/min ,width 11000mm

Then the next is anti-stick coating cooling roller ,suitable line speed 600m/min ,width 11000mm

After corona station , it will be anti-corrosion cooling roller ,suitable line speed 600m/min ,width 11000mm

Because during the corona treater roller running, it will release ozone, which have corrosion , once ozone enter into the roller body, which will generate the coating bump and shed

once occur this kind of problem, it need to change the roller completely ,in only repair the surface, the bump and shed problem will occurred again after a while .

the technical details of PRS cooling roller

Double-shell construction, water inlet and outlet at same end of roller

Inner and outer shell material Q345B, outer shell interference assembly process

Flow system: offer the original flow design according to your line number.

Drive side: low carbon alloy steel forging flange, ultra high strength steel forging

shaft

Operating side: low carbon alloy steel forging flange/shaft head, interference

assembly and welding

Out of roundness:≤0. 1 mm

Cylinder fom:≤0. 1mm

Dynamic balancing G2.5 with maximum speed 630m/min

Surface:Hard Chrome Coating, anti-stick coating and O3 resistant coating

Successful case

Cooling roller have been provided to more than 100 BOPP/BOPET production lines in 10+ countries and regions around the world, cooperative customers include many well-known companies and it helps increase the efficiency of the film stretching process by more than 5-10%.