Thanks to a wide range of various system sizes, F:GRAN can be implemented as a precise fit. Together with its significantly increased energy efficiency, this recycling technology is doubly cost-effective.

Description

In recycling of ground up plastics, predominantly from plastic washing sys- tems, there is no better choice than the F:GRAN. Flakes, even of varying size, are processed at a consistently high throughput rate.

F:GRAN is distinguished by its efficient material handling. The flakes to be processed are continuously circulated by rotors in a storage silo measuring up to 30 m3. This prevents problems caused by bridging from the beginning.

At a glance

• Processing regrind and film flakes
• Output rate up to 2,300 kg/h (5,070 lbs/h) depending on type
• Switching on and off by a single push button
• Simple, stable process
• Storage silo up to 30 m3 for material buffer

The operating principle of F:GRAN

In the anti-bridging silo, rotors keep the plastic flakes in motion. This prevents the flakes from bridging and ensures flowability.

In the transition area between the flake conveyor and the extruder input, the feeding screw acts like a feeder. The flakes are gently transported continuously from the large-dimensioned feeder screw into the extruder. This arrangement facilitates the processing of flakes of different sizes (the flake size is of minor importance). The pressure on the plastic flakes increases steadily as they enter the extruder intake, in order to achieve high throughput rates.

All the components are positioned in close proximity to prevent oxidation of the material and to make optimal use of heat from the shredding process.

Automatic feeder screw control

The feeder screw is automatically activated depending on the utilization of the extruder capacity. This ensures an optimized throughput without operator interference saving on labour costs.

Anti-bridging silo

The anti-bridging silo is used to store the plastic flakes and is equipped with rotors to prevent the flakes from bridging. Located directly over the feeder screw, the anti-bridging silo ensures a continuous supply of flakes.

One-button automatic ON/OFF control

The control system provides for smooth start-up of equipment components. Restart after unplanned shutdown in less than two minutes with full hopper and full extruder.

Dump and run operation

The material level in the anti-bridging silo is constantly measured and the feed is regulated accordingly. Discontinuous filling of the anti-bridging silo is possible – the NGR control unit does the rest .