SKAKO ”FLIP-FLOW” SCREEN EFFICIENT SCREENING USING TRAMPOLINE EFFECT DESIGNED FOR PROBLEMATIC MATERIAL The new “Flip-Flow” elastic mesh screens type SN-FF with polyurethane meshes are designed for the screening of problematic materials. This could be due to excessive moisture, low density or materials with a tendency to get caught in the meshes. In particular materials which cannot be screened efficiently with other technologies such as rotary screens, conventional vibrating screens, etc. The panels are fixed to both the main frame of the screen and the sub resonant frame. The vibration of the main frame is amplified on the sub resonant frame and as the polyurethane panels are fixed to both frames they make a “bump” effect called “flip-flow”. This “flip-flow” bump effect prevents the screened material from sticking or pegging in the screen apertures. Equipped with a sub resonant frame that amplifies the vibration of the main frame, resulting in acceleration on meshes of up to 50 G. The fixing of the polyurethane panels is done manually by wedges of polyurethane. This makes maintenance of the machine simple due to its quick replacement and easy assembly. The screening surface is made of high density polyurethane panels. These panels are mounted on separate modules which vary in size depending on the product to be screened and mesh opening needed. The screen aperture size range is from 0.8 mm to 50 mm and the hardness and thickness of the polyurethane can be varied according to screen and the product to be processed.

The applications where these screens are used are becoming more numerous but include among others: • Urban solid waste • Used cars recycling • Construction waste recycling • Used tires recycling • Expired food • Glass recycling • Biomass • Expired drugs • Slags from incineration For some applications where different types of screening is required, the "Flip-Flow” can be combined with different types of screen surfaces either on the same machine or as a set of two machines. With the advantage of separate machines being the ability to combine different vibration frequencies and amplitudes appropriate...