Liwell flip-flow screen

Technology designed for efficient sifting of sticky, damp and abrasive material.

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Avoid sprouting in screen cloth

In the final tensioning phase, the sieve mat is overstretched which causes the hole size to change. Overgrown material is released from the screen cloth and any plugging comes loose from the holes – even with difficult materials.

Acceleration forces of up to 50 G are achieved, while the aiming frame is only subjected to 2-3 G.

Sieve difficult materials with LIWELL’s unique flip flow technology.

Long life with PU screen cloth developed with special elastic properties.

Stone bounces off the Flip flow’s screen cloth, which stretches up to 600 times a minute. For effective screening of sticky, moist and abrasive material.

The supplier makes screens in different designs to provide optimal visibility for each customer. See combinations further down the page.

Trampoline effect of the flip-flow technology avoids, among other things, sprouting and plugging of the screen fabric.

Flip-flow screen fabrics are slackened and tensioned around 600 times per minute. They will work for thousands of hours and have to transport many tons of rock, sand, coal, coke and other materials during their lifetime.

Therefore, a special type of polyurethane is used, which the supplier makes in different versions to provide optimal visibility for each customer.

The mats are produced in the following designs :

• Square hole perforation from 2.0 x 2.0 to 40 x 40 mm
• Longitudinal perforation from 0.2 x 6.0 to 20 x 40 mm
• Different PU grades to achieve the right properties