Abstract
To facilitate recycling, not only R&D but also the creation of efficient recycling systems—collection and processing of recyclates as well as finding appropriate end-uses—is essentially important. PVC has a particular advantage in regards to mechanical recycling when compared to other major plastics. However, there is no one-size-fits-all approach to a solution. Specific situations of used or off-cut products and their applications need to be well studied. Vinyl industry in Japan has devoted itself for many years to the promotion of recycling of vinyl products. It started an R&D support program in 2007 and seven projects have been completed since then. Some of the new developments include mechanical recycling for products like wall covering and tarpaulin which were considered difficult to recycle in the past. Progress in chemical recycling has been made with a technology for the removal of chlorine from shredder dusts. Recovery of chlorine is a challenge for the future. Collaboration among the various players involved in the recycling of a specific product is essential for obtaining a successful result.
Highlights
Some of the new developments include mechanical recycling for products like wall covering and tarpaulin which were considered difficult to recycle in the past
PVC products have an advantage over other plastics with regard to their suitability for mechanical recycling
There is a general feeling among the expert members of the Assessment Committee for the R&D and Vinyl Environmental Council (VEC) members that the lessons learned though the course of adopting and following the specific projects have contributed to the assessments of new project proposals
Summary
PVC products have an advantage over other plastics with regard to their suitability for mechanical recycling. The R&D support program in Japan is a unique approach, development of new or more efficient technologies or applications for used PVC materials is a common interest for vinyl industry in many parts in the world. Separate PVC compounds and fibers as they are found in products such as tarpaulins and wall coverings by hitting chopped pieces of composite material with fins attached to a high speed rotating drum. PVC compounds and fibers are detached and separated from each other through their different specific gravities [12] It was an innovative recycling technology proposal for PVC composite products which had been considered difficult to recycle mechanically. The company made efforts to improve the machine, its durability, as well as the material feeder in order to efficiently chop the wall coverings It plans to treat tarpaulins in the future.
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