7.1.1 Status of the sector.......................................... 451 7.1.2 Development trends... more 7.1.1 Status of the sector.......................................... 451 7.1.2 Development trends......................................... 451
Journal of Material Cycles and Waste Management, 2014
To facilitate recycling, not only R&D but also the creation of efficient recycling systems-collec... more 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 enduses-is essentially important. PVC has a particular advantage in regards to mechanical recycling when compared to other major plastics. However, there is no onesize-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.
Journal of Material Cycles and Waste Management, 2015
With growing concerns on increased waste emissions, depleting capacity for final disposal which t... more With growing concerns on increased waste emissions, depleting capacity for final disposal which triggered calls for new regulations on resource managements in the society, Japan PVC Pipes and Fittings Association (PPFA) started a voluntary recycling system proactively to retain flexibly in system operation and modification for efficiency and to avoid regulations which could be rigid. The system was successfully recognized by relevant laws as means to promote recycling. The voluntary action also contributed to improve the image of vinyl products. A key for success was to design a system which benefits both the PVC pipes and fitting industry and the existing companies engaged in waste treatment, processing, and recycling. To increase the amount of recycling, it was essentially important to develop a system in a way that quality post-use products were stably collected and the manufacturers of products made with recyclates could find customers. Coordinated measures needed to be taken including development of an efficient nationwide network for collection of waste products, preparation of quality guidelines for collection of wastes, information sharing with potential partners including local government bureaus in charge of installation and maintenance of water supplies or sewer, and developing national standards for products to ensure the quality of products.
It is of huge importance for sustainability to find a pragmatic solution for recycling of a varie... more It is of huge importance for sustainability to find a pragmatic solution for recycling of a variety of wastes emitted in small mass such as the case of wallpaper replacements. A combination of two-step sorting scheme and transportation of the wastes in collaboration with the wholesalers was proposed to enhance the efficiency of recycling. The two-step sorting consists of the first sorting at the wallpaper hanging sites to separate and group wastes in a way to avoid heavy additional burden on the hanging job. Secondary sorting is conducted at a Sorting Center to re-group wastes to send to an intermediate processing company for recycling. To minimize the costs for transportation, the grouped wastes emitted at the hanging sites are brought back by the hangers and kept temporally and then moved to the wholesaler(s) on the way to receive new materials. When the wastes at the wholesaler(s) become sufficiently large for economic transportation, a truck is arranged to collect the wastes to transport them to the Sorting Center. A feasibility study to test the practicality of the method confirmed that it could be operable and the cost would be comparable or lower than that currently incurred for disposal of the wastes.
Recycling of PVC pipes and fittings in Japan: proactive approach of industry to and its impacts on legal/technical frameworks
Journal of Material Cycles and Waste Management
August 2015,
Open Access
Date: 07 Aug 2015
Recycl... more Journal of Material Cycles and Waste Management August 2015, Open Access Date: 07 Aug 2015 Recycling of PVC pipes and fittings in Japan: proactive approach of industry to and its impacts on legal/technical frameworks Shigetaka Seki, Toshiaki Yoshioka Download PDF (1,273 KB) View Article Abstract With growing concerns on increased waste emissions, depleting capacity for final disposal which triggered calls for new regulations on resource managements in the society, Japan PVC Pipes and Fittings Association (PPFA) started a voluntary recycling system proactively to retain flexibly in system operation and modification for efficiency and to avoid regulations which could be rigid. The system was successfully recognized by relevant laws as means to promote recycling. The voluntary action also contributed to improve the image of vinyl products. A key for success was to design a system which benefits both the PVC pipes and fitting industry and the existing companies engaged in waste treatment, processing, and recycling. To increase the amount of recycling, it was essentially important to develop a system in a way that quality post-use products were stably collected and the manufacturers of products made with recyclates could find customers. Coordinated measures needed to be taken including development of an efficient nationwide network for collection of waste products, preparation of quality guidelines for collection of wastes, information sharing with potential partners including local government bureaus in charge of installation and maintenance of water supplies or sewer, and developing national standards for products to ensure the quality of products.
Japan's Growing Technological Capability; Implication for U.S. Economy (1992), 1992
Technology assessment will provide important information to policymakers on how technology evolve... more Technology assessment will provide important information to policymakers on how technology evolves and is disseminated. In other words, it will tell them details about the conditions and environments that stimulate innovation and the diffusion of technology. Therefore, policymakers should be better equipped to develop policies that would create favorable conditions for innovation and the diffusion of technology.
Another important message that can be transmitted through technology assessment is the reality of deepening interdependence in industrial activities beyond natural boundaries. The question that should be raised is not to what extent should we depend on foreign sources for the supply of critical commodities and technologies, but rather how can we sustain stable relations between countries so that we can maximize the benefits of interdependence
Journal of Material Cycles Waste Management, Apr 4, 2014
To facilitate recycling, not only R&D but also
the creation of efficient recycling systems—colle... more 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 com-
pared 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 recy-
cling 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.
Reactivities of stable rotamers. VIII. Difference in reactivities of 1,2,3,4-tetrachloro-9-(2-halo-1,1-dimethylethyl)triptycene rotamers in Lewis acid-catalyzed reactions
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Papers by Shigetaka Seki
August 2015,
Open Access
Date: 07 Aug 2015
Recycling of PVC pipes and fittings in Japan: proactive approach of industry to and its impacts on legal/technical frameworks
Shigetaka Seki, Toshiaki Yoshioka
Download PDF (1,273 KB)
View Article
Abstract
With growing concerns on increased waste emissions, depleting capacity for final disposal which triggered calls for new regulations on resource managements in the society, Japan PVC Pipes and Fittings Association (PPFA) started a voluntary recycling system proactively to retain flexibly in system operation and modification for efficiency and to avoid regulations which could be rigid. The system was successfully recognized by relevant laws as means to promote recycling. The voluntary action also contributed to improve the image of vinyl products. A key for success was to design a system which benefits both the PVC pipes and fitting industry and the existing companies engaged in waste treatment, processing, and recycling. To increase the amount of recycling, it was essentially important to develop a system in a way that quality post-use products were stably collected and the manufacturers of products made with recyclates could find customers. Coordinated measures needed to be taken including development of an efficient nationwide network for collection of waste products, preparation of quality guidelines for collection of wastes, information sharing with potential partners including local government bureaus in charge of installation and maintenance of water supplies or sewer, and developing national standards for products to ensure the quality of products.
Another important message that can be transmitted through technology assessment is the reality of deepening interdependence in industrial activities beyond natural boundaries. The question that should be raised is not to what extent should we depend on foreign sources for the supply of critical commodities and technologies, but rather how can we sustain stable relations between countries so that we can maximize the benefits of interdependence
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 com-
pared 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 recy-
cling 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.