IT Plast Maggio 2021 | Page 66

ANCILLARY EQUIPMENT
Innovation in the field of ancillary equipment for plastics processing never stops at SB Plastics Machinery , involving for example biopolymers drying , PET and HDPE recycling an lab superdrying projects . All this without forgetting the role played by customer ser-vice .
Dry to Melt dehumidification unit of 2,500 m 3 / h with hopper made in “ hygienic design ”

INNOVATIONS IN DRYING AND RECYCLING

Italian technology plast / May 2021
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SB Plastics Machinery is an Italian company specialising in the design , manufacturing and marketing of machines and equipment for the heat treatment of plastic polymers and biopolymers . Today , the main markets targeted by SB in order to consolidate its growing business are the drying of biopolymers and the recycling of PET and HDPE , as well as the laboratory applications of the so-called “ super-drying ” technology . All this , as described below , with a particular attention to the aspects related to spare parts and maintenance services .
NEW EFFICIENCY STANDARDS FOR BIOPOLYMERS DRYING The most important innovation of SB for 2021 regards the introduction of the new DRY-TO-MELT range of dryers , specially developed for biopolymers . These units take the fea-tures of the conventional desiccant dryers to a higher level from many points of view . First of all , the drying air has been optimised in terms of flow rate , pressure and speed : now , it can be modulated in order to adapt it to the biopolymer grade to be processed , with the possibility of monitoring the product ’ s moisture content in-line . In addition , the open-loop processing option is available , making it possible to eliminate contaminants from the material ( such as THF or similar substances ), while the treatment temperature range from 49 ° C to 170 ° C covering all process cases , including the drying of biopolymers which must remain amorphous (< 60 ° C ) or their crystallisation plus drying ( PLA , PHA , PBS , etc ..) Finally , in order to minimise changeover times when shifting from one material to anoth-er , the hoppers and , more generally , all those parts coming in contact with the biopoly-mers , have been engineered in compliance with hygienic design principles , simplifying the access to the equipment and , consequently , its cleaning and decontamination . The DRY-TO-MELT dryers are the result of an R & D work conducted both in-house and in cooperation with major international
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