Optical Sorter Recycling Green Eye®

Equipment Spotlight: Optical sortation ‘down to the molecular level’

Green Machine has released an optical sorter that incorporates newly patented technology.

The Green Eye Optical Sorting Recycling System provides an automated sorting process that incorporates artificial intelligence, according to its manufacturer. Its learning ability gives it “the flexibility to sort multiple commodities with the ability to evolve with each market challenge in real time,” according to Green Machine.

The optical sorter can handle a conveyor operating at up to 900 feet per minute. The optical unit collects three-dimensional information about each item that travels through its field of view. It collects details “down to the molecular level,” according to Green Machine.

“This lets the Green Eye system remove or block undesired materials from the air ejector miss-hits,” the company says. It can achieve a clean pick rate that operates with at least 95 percent accuracy.

According to its patent, the optical sorter uses a hyperspectral camera that observes infrared and visible light that gives it information about the target material. A single sensor identifies items by composition and color with a higher degree of positive identification.

“In most cases, this optical sorting system removes any need for post sorting,” the company stated.

The Green Eye equipment is designed for plastics recovery facilities (PRFs) and other standard residential recyclables processing plants.

The patent was filed for in April 2014 and issued in April 2018.

Green Eye Optical Sorter

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Plastic furniture manufacturer is now a full circle recycler.

Plastic Optical Sorting System Casual Living 10TPH Baled

Pictured from left, Tim Dohner; Jim and son Jerry

Pictured from left, Tim Dohner; Jim and son Jerry

Casual Living Unlimited’s newly commissioned baled plastics processing plant began accepting mixed bales this January. James Allgyer, owner of Casual Living, needed a cheaper, more reliable source of clean feed stock for his highqualityplasticwood furniture company.

Mr. Allgyer says, “My furniture company depends on high-quality resins to produce the exotic color schemes that separate us from the competition. Green Machine designed and manufactured a system that delivered us the clean product we needed to feed our grinders, wash tanks and ourplastic extruders.”

John Green, President of Green Machine, says, “It was a pleasure working with Jim and his two sons, Justin (furniture plant manager) and Jerry (recycling production supervisor). We all worked closely in determining a final design that would be capable of automatically processing highly contaminated bales of plastics.”

The Green Machine system design begins with an infeed system with a bale
breaker. Mixed plastic bales with fiber, fines and residue contamination are then fed to our rubber disc inclined polishing screen, where the agitation provided by our high speed rotating discs helps to declump bale fragments, while the waste fiber climbs to the top and declumped plastics with fines fall off the bottom. A 2” minus fines screen then removes all small particulates, and a cross belt magnetic separator collects metals. Three patent-pending GREEN EYE® optical sorting systems remove PET plastic, natural HDPE and finally colored HDPE. Each commodity
is blown to huge holding bunkers with live floor conveyors that automatically feed downstream processing equipment.

Mr. Allgyer says, “Our Green Eyes sort cleaner than any other system I visited. We are able to sort with little or no manual postsorting. We are ready to accept mixed plastics bales with plenty of contaminants and sort that material by grade at a rate of 10 tons per hour and produce the cleanest end product. We are now looking to buy mixed bales of plastics from recyclers all over the East Coast and use that material to produce our high-quality furniture products. Our company is truly a full-circle recycler now.”

Designers, Manufacturers and Dealers of Waste Processing Products & Services

Plastics Processing Plant

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