Effective recycling of composites using the CreaSolv® process
The Fraunhofer Institute for Process Engineering and Packaging IVV will present new ways for recycling composite plastic materials at K 2013 in Düsseldorf on 16-23 October (Hall 07 / B05). Three variants of the solvent-based CreaSolv® process will be introduced, permitting efficient recycling of metal-plastic composites, expanded polystyrene (EPS), and polylactide (PLA).
Recycling of plastic-containing galvanization waste
Many technical products are metal-plastic composites that utilize key properties of both these materials. In the car manufacturing and sanitary industries, for example, complex-shaped plastic parts are galvanized in order to protect the plastic bodies and enhance their optical properties. Also, plastic-covered metal products, for example distribution boxes and cable connectors, are manufactured in the automotive and electronics sectors. In general, production waste arising from the manufacture of such composites cannot be adequately separated into the individual components. This is why current recycling processes are limited to the recycling of only one component of the composite. Shredding processes are often used to destroy the complex and precision-manufactured metal core, meaning that only a small portion of the actual material value can be recovered. The CreaSolv® process, however, allows the complete separation of the composite into its constituents and can be used to efficiently recycle both the metallic and polymeric components of composites.
Recycling of EPS waste into re-expandable polystyrene
Expanded polystyrene (EPS), known as Styropor®, is at present mainly treated thermally to recover heat. This because contaminated EPS waste, mainly originating from the construction and packaging industries and sometimes containing fire retardants, cannot be effectively recycled due to the poor purification and recycling efficiency of processes developed hitherto. The new process developed at Fraunhofer IVV offers efficient purification and is able to produce virgin-quality re-expandable polystyrene from EPS waste. Simultaneously, a new logistical plan for collecting EPS waste at low cost is being set up.
New approaches for the recycling of polylactide packaging materials
Polylactide (PLA) is becoming an ever more important industrial plastic. Fraunhofer IVV has shown that combustion and composting, the two standard recycling methods used to date, are not the only options for recycling plastic packaging made of renewable raw materials. Due to the growing amount of PLA waste, Fraunhofer IVV is evaluating the whole process chain for PLA recycling, including possible effects of PLA on the recycling of other plastics. The envisaged Fraunhofer IVV process will allow pure PLA, PLA-containing fractions, PLA composites, and blends to be separated from packaging waste and processed into high-quality PLA recyclates. These recyclates can then be used for manufacturing high-quality packaging for non-food applications and for consumer goods.
Effective Recycling of Composites
Effective recycling of composites using the CreaSolv® process
The Fraunhofer Institute for Process Engineering and Packaging IVV will present new ways for recycling composite plastic materials at K 2013 in Düsseldorf on 16-23 October (Hall 07 / B05). Three variants of the solvent-based CreaSolv® process will be introduced, permitting efficient recycling of metal-plastic composites, expanded polystyrene (EPS), and polylactide (PLA).
Recycling of plastic-containing galvanization waste
Many technical products are metal-plastic composites that utilize key properties of both these materials. In the car manufacturing and sanitary industries, for example, complex-shaped plastic parts are galvanized in order to protect the plastic bodies and enhance their optical properties. Also, plastic-covered metal products, for example distribution boxes and cable connectors, are manufactured in the automotive and electronics sectors. In general, production waste arising from the manufacture of such composites cannot be adequately separated into the individual components. This is why current recycling processes are limited to the recycling of only one component of the composite. Shredding processes are often used to destroy the complex and precision-manufactured metal core, meaning that only a small portion of the actual material value can be recovered. The CreaSolv® process, however, allows the complete separation of the composite into its constituents and can be used to efficiently recycle both the metallic and polymeric components of composites.
Recycling of EPS waste into re-expandable polystyrene
Expanded polystyrene (EPS), known as Styropor®, is at present mainly treated thermally to recover heat. This because contaminated EPS waste, mainly originating from the construction and packaging industries and sometimes containing fire retardants, cannot be effectively recycled due to the poor purification and recycling efficiency of processes developed hitherto. The new process developed at Fraunhofer IVV offers efficient purification and is able to produce virgin-quality re-expandable polystyrene from EPS waste. Simultaneously, a new logistical plan for collecting EPS waste at low cost is being set up.
(double click on picture to open new window)
The CreaSolv® process allows the
recovery of high-quality recyclates
(©Fraunhofer IVV)
New approaches for the recycling of polylactide packaging materials
Polylactide (PLA) is becoming an ever more important industrial plastic. Fraunhofer IVV has shown that combustion and composting, the two standard recycling methods used to date, are not the only options for recycling plastic packaging made of renewable raw materials. Due to the growing amount of PLA waste, Fraunhofer IVV is evaluating the whole process chain for PLA recycling, including possible effects of PLA on the recycling of other plastics. The envisaged Fraunhofer IVV process will allow pure PLA, PLA-containing fractions, PLA composites, and blends to be separated from packaging waste and processed into high-quality PLA recyclates. These recyclates can then be used for manufacturing high-quality packaging for non-food applications and for consumer goods.
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