How do we choose a high-quality MDO stretching roller?

The MDO stretching roller in MDO (Machine Direction Orientation) is the core component of the entire equipment, and its application directly determines the stretching effect and final performance of the film. They play a vital role in the MDO process, accurately managing the temperature of the film during the entire stretching process (preheating, stretching, heat setting, cooling), and stably supporting, guiding and driving the film forward.

So how do we choose a high-quality MDO stretching roller during our purchasing process? Maybe you can refer to the following aspects:

1. MDO stretching rollers are usually made of steel, alloy steel seamless pipes, precision forgings and other materials, and the surface finish of the roller can reach grade 14.

2. The roller surface is processed with super mirror finish to ensure that the roller surface straightness, balance, out-of-roundness, coaxiality, etc. meet the requirements.

3. During the production process, has the roller surface been quenched or nitrided? Some manufacturers may remove these processes due to high costs. This may not be apparent on the surface, but there will be serious problems in practical use.

4. The temperature difference of MDO stretching roller during cooling or heating is not more than 1℃, the surface hardness is HRC55-58, the hardness after chrome plating and polishing is HRC62, and the thermal deformation is not more than 0.01mm.

Hope the above answer can help you! The MDO stretching roller we provide is made of high-quality raw materials and professional technology through a complete process, ensuring that every roller leaving the factory has the best performance.

If you have more questions, please feel free to contact CHEYOE!