South Africa installs Herbold film recycling system

South Africa installs Herbold film recycling system

System installed near Johannesburg can process up to 8,000 tons per year of film scrap.

February 9, 2018
Edited by Brian Taylor
Equipment & Products International Recycling News Plastics

A plastic film recycling plant supplied by Germany-based Herbold Meckesheim has been installed in Germiston South, near Johannesburg, in South Africa. It is being billed by Herbold “the first large-scale plant for the recycling of heavily contaminated PE [polyethylene] film waste” in that nation.

The plant can process up to 8,000 tons per year of film, used big bags and similar plastic scrap. The film scrap arrives in pre-sorted bales, which are then shredded and have contaminants removed by a pre-washing unit and an initial washing stage.

In the next stage, more contaminants are dissolved in a wet granulator that create intense friction. A subsequent friction washer separates the dirty water from the end product.

A hydro cyclone separates heavy contaminants and non-PE plastics from the desired fraction. “This separation process has a particularly high separation effect and ensures the high quality of the produced film flakes,” states Herbold.

In two drying steps, involving a centrifugal dryer and hot air dryer, the product reaches a residual humidity level deemed suitable for further material processing into pellets in a downstream extruder. The pellets are then ready to be converted into “high-quality film,” the company indicates.

LDPE Polyethylene/PE