56 / 84
HGM 60/200 Swivel-type Screen Support
Herbold Meckesheim:
the five columns
of our plastics recycling
T
he machine and plant manufacturer from
Meckesheim/Germany will present their five columns for
an efficient and cost-effective recycling of plastic waste, cha-
racterised by low operating costs and a higher efficiency.
Pre-size-reduction
Pre-size-reduction is an important process step if the feeding
material is too bulky for the usual procedure or if the material
is in a first step only to be coarsely shredded for a subsequent
sorting, classification or inspection. For this purpose, shred-
ders, granulators, guillotines and hammer mills are used as
pre-size-reduction machines, e.g.
HOG Shredder HGM series
Designed for size-reducing difficult, especially viscous materi-
als or materials containing foreign bodies where the service
lives of standard granulators are too short and where traditio-
nal shredders do not yield the desired end product. Available
in wet execution for extremely abrasive materials, such as agri-
cultural film, WEEE, etc.
Size-reduction
Herbold size-reduction machines grind all types of plastic
waste, it does not really matter whether it comes from injec-
tion or blow moulding, thermoforming, rotomoulding, flat film
extrusion or blow moulding extrusion, calendaring or waste
from the production of pipes, profiles and plates or from the
manufacture of other plastic products, e.g.:
Granulator SB with forced feeding (patented)
The patented Herbold granulators with forced feeding of the
SB type have been successfully in operation worldwide for
Herbold Wet Shredder HGM 60/200
Extrusion International 5/2016
56
many years now. The material is not fed into the grinding
chamber by gravity as is the case with traditional granulators
but as a continuous and even flow by means of feeding
screws. In case of difficult applications, only few suppliers in
the market are able to find an appropriate solution.
The problem’s solution is the rotor design of the SMS Granu-
lator (Exhibit SMS 80/120 SB 2). The one-piece rotor guaran-
tees stability. Welding seams cannot break since they do not
exist. The knives of this rotor cannot shift because they are
crewed onto a massive back limit stop. This special design fa-
cilitates cleansing for there are no “dead angles” where rem-
nants of grinding material could depos
Fine Grinding
“Fine grinding“ in our application is pulverising below 1 mm.
For this purpose – depending on the product – we use granu-
lators or impact disc pulverisers, e.g.:
Impact Disc Pulveriser PU Series
Herbold impact disc pulverisers are high-speed fine grinders.
They are used with granular and brittle materials, e.g. PE gra-
nules or rigid PVC grinding materials.
Washing, Separating and Drying
End of life post-industrial and post-consumer plastic products
are used, mixed and contaminated plastics. Before they can
be used again, they have to be washed and/or separated. With
the successful commissioning of the film washing line at Ro-
depa Plastics B.V. Herbold Meckesheim proved that a high-
quality end product can be obtained by separating undesirable
plastics with the hydrocyclone separation step.
Mark Langenhof Managing Director from Rodepa Plastics B.V
underlines: “Rodepa has taken a big step forward in recycling
contaminated waste that is to newly integrate the production
of film. This has only been possible with the best plant engi-
neering. With Herbold Meckesheim we have now found the
ideal partner in order to cooperate successfully.”