Extrusion International 4-2019

PREVIEW 54 Extrusion International 4/2019 Efficiency and Quality in Plastic Recycling The machine and plant manufacturer from Meckesheim, Germany will be presenting tried and tested process solutions for the treatment of plastic waste in Düsseldorf in addition to its wide range of machines. “Size reduc- ing, washing, separating and drying, and agglomeration are our main pro- cesses. Our customers value our wide range of machine options and the ability to obtain custom plant designs from a single source. With our focus on the circular economy, we are fully in line with the current spirit of the times and with one of the main topics of the K 2019 trade fair,” says Werner Herbold, one of the two general man- agers. Pre-shredding is an essential process step when the feed material is too bulky to process or when it has to be coarsely broken up before sorting, visual inspection, or testing. We use shredders, granulators, guillotines, and hammer mills for pre-crushing. For example, the New EWS 60/210 Shredder: The demand for high-per- formance shredders that can process entire bales is increasing, especially when used in washing lines. Herbold will present the EWS 60/210 for the first time at the K 2019 trade fair. This shredder was developed for dry oper- ation as well as for wet operation and will impress you with its maintenance- friendly design in addition to its high capacity. The machine is designed to be very robust and durable. In many plants, the crusher is the first stage in the process. In this stage, foreign bod- ies are often impossible to avoid. For this reason, the company has taken some of the special features of this stage into account during its develop- ment that cannot be found in any oth- er machines on themarket. “We focus on making a perfect wear-protected rotor that, in addition to custom knife configurations, is equipped in partic- ular with bolted armor plating and a special grinding chamber seal,” stat- ed Daniel Zeiler, Head of Sales. The time-consuming hardfacing of rotors is therefore unnecessary. The two-sided belt drive is low-mainte- nance, and to safeguard against for- eign bodies, there is a clutch that pre- vents damage to the machine when uncrushable feed material is encoun- tered. The maintenance concept is tailored to ensure optimal accessibility based on ergonomic considerations. The first machines are already suc- cessfully in use at customers in Eu- rope, and the official product launch will take place at the K 2019 trade fair. The new DWS two-shaft shredder: A new two-shaft shredder with the stator positioned in the middle will be presented as a new innovation at the fair. Due to the large surface area of the rotor, the machine has a very good feed performance and is suit- able for materials that can only be fed in doses using conventional shredders such as big bags or high-volume con- tainers. Size reduction: Herbold granulators grind all plastic waste materials, re- gardless of whether it’s generated from injection molding, blow mold- ing, deep drawing, rotomolding, flat sheet or blown film extrusion, and calendering processes or waste gen- erated during the manufacture of pipes, profiles, sheets, or other plastic products. For example, SB granulators with force feeding: The Herbold SB series granulators with force feeding have been used successfully world- wide for many years. “We have con- sciously redesigned this series of ma- chines to enable complete horizontal charging,” stated Karlheinz Herbold, who is responsible for the technology as the Executive Director. The feed material is not fed into the grinding chamber from the top through the force of gravity as in the case of stan- dard granulators, but by even feeding the material into the grinding cham- F series rotor with replaceable wear protection 1. Knife pressure strip 2. Rotor knife 3. Replaceable wear part Modern filmwashing lines with hot washing