Plug in Performance

EREMA LASERFILTER: HIGH-PERFORMANCE FILTER FOR CONTINUOUS CONTAMINANT DISCHARGE.
FOR HIGH THROUGHPUTS EVEN WITH HIGH DEGREES OF CONTAMINATION.

Plug in Performance

EREMA LASERFILTER: HIGH-PERFORMANCE FILTER FOR CONTINUOUS CONTAMINANT DISCHARGE.
FOR HIGH THROUGHPUTS EVEN WITH HIGH DEGREES OF CONTAMINATION.

 
Free Flow. Because the melt quality is crucial. HOW THE LASERFILTER WORKS
1

Coming from the extruder the contaminated plastic melt flows via a circular distributor ring into the housing between two parallel configured laser-drilled screen discs.

2

The melt is pressed through the screen discs, flows through and leaves the filter in a clean state via the collection channel.

3

The contaminant particles collect on the screen as the melt flows through. A scraper disc with three scrapers on each side rotates between the screen discs. The pressed on scrapers lift the contaminants immediately from the smooth, hardened screen discs and forward them directly to the discharge system.

LET IT FLOW.
 

The Laserfilter lets the melt flow unhindered. This is the free flow concept in a nutshell. The key to success: short dwell times, static screens and a highprecision scraper which rotates only in the area of the melt which is still contaminated – while maintaining constant pressure.

As soon as the melt is freed from its contaminants and flows into the clean section, its flow is not disturbed by any moving or rotating parts. This functional principle avoids dead spaces with short dwell times and prevents „black spots“ from resulting.

CONTINUOUS CLEANING:
HIGH THROUGHPUT EVEN WITH HEAVY CONTAMINATION

One strong efficiency benefit of the Laserfilter is its high screen cleaning frequency. This is because three scrapers are available in every rotation to lift the contamination from the screen immediately and forward it to the coaxial discharge screw without delay. This ensures that the contaminant particles only spend an extremely short time on the screen. The screen holes are, therefore, quickly free again to filter new melt. Thanks to this continuous scraping, the filter achieves high throughput rates even when the melt is heavily contaminated

WHAT IS CLEAN, STAYS CLEAN
STATIC SCREEN, ROTATING SCRAPER.

The Laserfilter screen is a clear and reliable line between contaminated and clean material. Because, thanks to the static design of the screen, it can be perfectly sealed, thus preventing any filtered contaminants from getting into the high-grade plastic melt. This is a significant benefit over many traditional filter systems in which the screen rotates and a seal represents a bigger challenge. In short: EREMA Laserfilter – top level, reliable filtration

 
CONSTANT PRESSURE OPERATION =
STABLE, CONTINUOUS PROCESS

The scraper and discharge screw speeds depend on the pressure and are controlled fully automatically („constant pressure operation“).

EXTREMELY LOW MELT LOSS

The optimised scraper technology ensures that the contaminants are discharged in a controlled manner and with only a minimum of melt – up to 50% thickening is possible.

 
dot.png
 
MATERIAL-ALL-ROUNDER. FROM POST-CONSUMER TO PET.
 

The high-performance filter has the contaminants of a multitude of different plastics perfectly under control. The spectrum ranges from post-consumer and post-industrial applications with higher degrees of contamination to relatively clean PET material.

 
Post Consumer

The current trend which can be observed in the direction of „poorer“ input material will continue. Films are becoming thinner and thinner in order to reduce packaging weight. However, the relative share of contaminants such as paper labels, for example, which have to be removed in the course of processing increases as a result. High-performance filtration is thus becoming more and more a key function in plastics recycling systems. The Laserfilter is the ideal solution for this task.

Better for PET

The EREMA Laserfilter is also playing an increasing role in the PET sector. The reason for this is that the increased use of rPET in end products requires high process stability. This stability is also required if the degrees of contamination increase – which is currently the case. The benefits of the Laserfilter: it processes input material with a degree of contamination of over one per cent without any difficulty. The functional principle avoids dead spaces and makes for short dwell times, which in turn prevents „black spots“ with PET.

A system of this kind, which offers high melt and recyclate quality, has clear benefits especially in the case of food contact grade applications. Another argument which underpins the costeffectiveness of the Laserfilter: whereas the melt losses with piston filters are usually between one and two per cent, it has been possible to reduce them to clearly below one per cent with the Laserfilter thanks to the newly developed discharge unit.

 
Mission: REMOVE CONTAMINANTS.
 

Whether it is paper, wood, aluminium or copper – the EREMA Laserfilter removes undesired impurities from the plastic melt reliably for you. It is also the ideal solution for the efficient filtering of rubber, silicone and foreign polymers such as PET or PA (in polyolefin recycling). What‘s more: it is a high-performance filter which additionally stands out through remarkably strong throughput.

RUBBER & CO.:
TAKE OUT WHAT OTHERS CAN‘T.

The Laserfilter is a real specialist when it comes to removing rubber-like, nonmelting contaminants like silicone or linked polymers. This is because, whereas these contaminants can slip through the screens of traditional systems due to pressure and a longer dwell time on the scraper, the Laserfilter has an effective means of dealing with this undesired effect. We call it continuous screen cleaning. In this process, rubber & co. are lifted off the screen immediately again by the scraper star and conveyed out reliably via the discharge screw.

 
dot.png
 
POWERFUL FILTRATION
 

Perfect design, high-precision manufacturing and a robust build.

sieb.jpg
THE SCREEN. STRENGTH IN
SIMPLICITY.
 

Flat, straightforward design and 1.5 mm thick. The property spectrum of the filter screen made of hardened special steel is second to none. Because, thanks to its robust design and mechanical stiffness, the quality product even deals with stubborn contaminants with no trouble at all and stands out through a long service life. As a result, considerably fewer screen change processes are necessary, and the ones which are required are carried out in no time at all. Compared to screens with a cylindrical design, the flat design comes with another economic benefit: it can be manufactured relatively easily and thus, by comparison, more cost-effectively.

 
INGENIOUS DESIGN

Flat screen, straightforward design

PERFECT MATERIAL

Robust: made of hardened special steel, wall thickness around 1.5 mm

EXTREMELY STIFF

Excellent mechanical stiffness

PARTICULARLY FINE

Thousands of ultrafine drilled holes, filtration fineness up to 70 μm

COST BENEFIT

Thanks to the flat design the screen can be made easily and inexpensively compared to screens with a cylindrical design

DESIGN BONUS

The screen does not turn, instead it is used statically so there is a perfect seal between contaminated and clean melt

LONG SERVICE LIFE

Notably fewer screen changes as a result

QUALITY BONUS

The screen discs are made at the EREMA Group subsidiary 3 S in Austria – a company known for its high manufacturing quality.

 
LASER TECHNOLOGY
THE FINE DIFFERENCE
 

The Laserfilter gets its name from the filter screen. Advanced laser technology cuts thousands of ultrafine holes into a hardened special steel disk. A self-cleaning effect is achieved through the conical shape of the holes. The filtration fineness reaches up to 70 μm.

THE SCRAPER STAR. WITH DISCHARGE SYSTEM.

 

Perfect design, high-precision manufacturing and a robust build – the scraper star and discharge system are a dynamic duo with precise interaction. Together they are responsible for continuous screen cleaning, high throughput even with heavily contaminated melt and top filtration reliability. Turn after turn. Thanks to the innovative scraper geometry and the directly connected discharge channels any contaminants are lifted from the screen immediately and forwarded to the coaxial discharge screw. The high quality of the parts is ensured by extremely wear-resistant materials and fabrication by the specialists 3 S – an EREMA Group subsidiary.

 
LONG FILTRATION CYCLES

Rotating scraper disc for self-cleaning enables days and weeks of continuous filtration

INNOVATIVE DESIGN

Ensures better discharge capacity – lowest melt losses through increased thickening

HIGH SCREEN SERVICE LIFE

Considerably longer screen service life through increased cleaning efficiency

PERFECT MATERIAL

Top-quality scraper elements made in highly wear-resistant material

YOUR QUALITY BONUS

The screen elements are made at the EREMA Group subsidiary 3 S in Austria – a company known for its high manufacturing quality

SELF-ADJUSTING SCRAPER

Through contact pressure of the scraper on the filter surface

SELF-SHARPENING SCRAPER KNIVES

As the screen is harder than the scrapers

 
Continuous screen cleaning
EXTREMELY SHORT PARTICLE DWELL TIME
 

Not just one but three knives are located on each side of the continuously rotating scraper star. Every contaminant particle only comes into contact very briefly with the screen as it is picked up by one of three knives, lifted and conveyed immediately to the discharge system; this means that it is difficult for so-called „soft particles“ such as rubber or silicone contaminants to pass through the screen. Moreover, the rapid lifting of the particles prevents an undesired grinding effect of the contaminants.

 
dot.png
 
POWERFUL. THROUGH AND THROUGH. FROM SINGLE TO QUATTRO.
infoButton_en.png

 

Up to 6,000 kilograms of filtrated melt per hour. The brand new EREMA Laserfilter LF 2/354 QUATTRO is a real top performer and sets the standard in terms of throughput. But the series not only delivers remarkable, compelling performance at the top end of the scale. Because whether it is SINGLE, TWIN, TRIPLE or QUATTRO – every individual design ensures you have high-capacity melt filtration even with high degrees of contamination. Your specific requirements and desired throughput finally decide which solution is the best for you.

infoBox_en.png
 
LF 2/354

Total filter area: 1342 cm²
Number of heating zones: 7
Heating capacity: 23 kW
Drive power: 4 kW
Scraper disc speed: 1-8 U/min
Max. operating pressure: 320 bar
Throughput capacity: 200-2000 kg/h



LF 2/354 TWIN

Total filter area: 2684 cm²
Number of heating zones: 14
Heating capacity: 66 kW
Drive power: 8 kW
Scraper disc speed: 1-8 rpm
Max. operating pressure: 320 bar
Throughput capacity: 800-3500 kg/h



LF 2/354 TRIPLE

Total filter area: 4026 cm²
Number of heating zones: 14
Heating capacity: 85 kW
Drive power: 12 kW
Scraper disc speed: 1-10 rpm
Max. operating pressure: 320 bar
Throughput capacity: 1800-4600 kg/h



LF 2/354 QUATTRO

Total filter area: 5368 cm²
Number of heating zones: 18
Heating capacity: 106 kW
Drive power: 16 kW
Scraper disc speed: 1-10 rpm
Max. operating pressure: 320 bar
Throughput capacity: 2500-6000 kg/h