scholarly journals Situation and trends of recycling of container packaging, especially waste plastic products. Experiment of PET bottle recovery at stores and real execution in Kishiwada City.

1997 ◽  
Vol 26 (12) ◽  
pp. 794-798
Author(s):  
Shigeki KONDO
Keyword(s):  
Waste Plastic ◽  
Plastic Products

Study on fuel oil production from waste plastic products

2002 ◽  
Vol 2002.42 (0) ◽  
pp. 100-101
Author(s):  
Toshiki HASEBE ◽  
Shigeru TOSAKA ◽  
Yasuhiro FUJIWARA ◽  
Yoshinori TOMITA ◽  
Isao KUNITA
Keyword(s):  
Oil Production ◽  
Fuel Oil ◽  
Waste Plastic ◽  
Plastic Products

scholarly journals Upcycling plastic waste through empirical implementation of large-scale 3D printing

2021 ◽  
Author(s):  
◽  
Watcharawat Ritthisri
Keyword(s):  
3D Printing ◽  
Global Economy ◽  
Large Scale ◽  
Extrusion Process ◽  
Urban Environments ◽  
Plastic Waste ◽  
Waste Materials ◽  
Waste Plastic ◽  
Plastic Recycling ◽  
Plastic Products

<p>Plastic waste presents a real global challenge and a threat to health, environment and the global economy. While awareness of the devastating effects of plastic waste on the environment has increased, the production of plastic products is still on the rise. As a result, many countries do not prioritise waste plastic recycling or the export of plastic wastes to other countries for recycling. However, the products from recycled waste plastics are considered to be of low quality and uneconomical to produce on large scale, thus making individuals and corporations giving preference using plastics from virgin materials rather than producing products from recycled plastics. These is therefore a need to develop an effective process through the use of technology to upcycle plastic waste locally to produce products of higher value from waste plastic. The current research sought to investigate the potential of distributed upcycling to change the production and consumption of plastic products in future. To this end, the study sought to prepare high value design application for upcycling and investigated how they could be implemented through large-scale 3D printing in urban environments. To achieve this, the researcher collected plastic waste materials from Wellington in New Zealand to be used in the study experiments. The plastic waste materials were first cleaned, sorted and cut into small pieces using a granulator before being taken through thermal processes to dry them out and set the right temperatures to ensure consistency of the plastic waste extrusion before being taken through the extrusion process. 3D Printing was used to design and make various final products from the recycled plastic waste. Experimentation with different formulations of waste plastic led to production of a high-quality filament successfully achieving the study objectives. As such, upcycling plastic waste using 3D Printing technology provides a locally viable solution to making useful products in large scale as a model for future development.</p>

Manufacturing and Evaluation of Woodfibre-Waste Plastic Composite Sheets

2003 ◽  
Vol 11 (6) ◽  
pp. 433-440 ◽  
Author(s):  
Debes Bhattacharyya ◽  
Krishnan Jayaraman
Keyword(s):  
Renewable Resources ◽  
Tensile Modulus ◽  
Polymeric Materials ◽  
Solid Wastes ◽  
Waste Plastics ◽  
Waste Plastic ◽  
Plastic Composite ◽  
Single Use ◽  
Complex Parts ◽  
Plastic Products

Plastic products used for packaging are often discarded after a single use resulting in an inexhaustible supply of waste polymeric materials. The stiffness and strength of polymeric materials have been known to improve with the addition of lignocellulosic fibres available in abundance in nature. Hence, composite materials containing natural fibres and waste plastics would result in the reduction of solid wastes and the use of cheap, renewable resources. Composite sheets have been manufactured from Pinus Radiata woodfibre mats produced by a novel mat forming technique and Kerbside waste plastics. The tensile modulus and strength of these composite sheets have been shown to improve with the amount of woodfibres. The formability of these sheets has been assessed through dome forming. The presence of woodfibres reduces the localised thinning while thermoforming, which is a significant advantage since excessively thin areas may cause component weakness and as a result, defective parts. Complex parts have been thermoformed successfully from these composite sheets confirming the enormous potential for their use in industry.

scholarly journals Green Mortar by Partial Introduction of Shredded Waste Plastic

2021 ◽  
Vol 1 (1) ◽  
pp. 1-4
Author(s):  
Anant Agarwal ◽  
Keyword(s):  
Building Materials ◽  
Daily Life ◽  
Plastic Waste ◽  
Industrial Products ◽  
Environment Friendly ◽  
Waste Plastic ◽  
Effective Manner ◽  
Massive Scale ◽  
Basic Need ◽  
Plastic Products

Plastic products have become an integral part of our daily life as a basic need. It is produced on a massive scale worldwide and its production crosses 150 million tons per year globally. In India, approximately 9 million tons of plastic products are consuming every year (2010) which is expected to rise to 12 million tons by 2012 and estimates say it would double this value in 2025. Its broad range application is mainly in packing films, wrapping materials, fluid containers, clothing, household, and industrial products, and building materials. This project deals with an effective method of dumping plastic waste that has accumulated. Using plastics in building mortar and plasters can be employed in an effective manner that is completely environment friendly.

scholarly journals Community Waste Plastic Recycling System Through Plastic Injection Molding

2021 ◽  
Vol 335 ◽  
pp. 03009
Author(s):  
Lih Zhang Koo ◽  
Douglas Kum Tien Tong ◽  
Matias Rinne
Keyword(s):  
Injection Molding ◽  
Ventilation System ◽  
Plastic Injection Molding ◽  
Mold Design ◽  
Molding Process ◽  
Melt Flow Rate ◽  
Plastic Properties ◽  
Waste Plastic ◽  
Plastic Injection ◽  
Plastic Products

High demand for plastic worldwide has resulted in increasing environmental pollution. To make the plastic manufacturing process more environmentally friendly, recycling of waste plastic must be considered. In view of this a social enterprise called Me.reka Makerspace aims to use waste plastic to produce recycled plastic products using injection molding. However, injection molding is a complex process. In the past Me.reka experienced numerous failures resulting in defective plastic products and cost wastage. To assist with Me.reka’s objective, this study aimed to recommend a process capable of producing good quality recycled plastic products that meet dimensional accuracy and surface roughness requirements. Literature review done on plastic waste separation techniques, plastic properties testing for injection molding, and ventilation systems. Manual plastic sorting was found to be the best for Me.reka, where it can separate all 7 types of plastics collected by Me.reka with the highest accuracy and efficiency and the lowest cost. The melt flow rate of specific plastic type can determine its compatibility for use in the injection molding machine. Furthermore this study found that the best ventilation system for Me.reka Makerspace’s plastic injection molding facility was the displacement ventilation. It is expected that with the installation of an efficient ventilation system, the hazardous gasses produced during the process will be efficiently expelled thus protecting the health of workers. With regards to injection molding, a mold design was made for a book cover mold by applying the applicable mold design principles. However, this mold was later sent for testing at another facility. A flowerpot mold that had arrived at Me.reka which required immediate testing was tested instead. Through testing, improvements were made to the mold and the molding process by finding out the optimum injection molding temperature for the waste plastic used and the mold sprue diameter required to produce a well formed molding.

scholarly journals Upcycling plastic waste through empirical implementation of large-scale 3D printing

2021 ◽  
Author(s):  
◽  
Watcharawat Ritthisri
Keyword(s):  
3D Printing ◽  
Global Economy ◽  
Large Scale ◽  
Extrusion Process ◽  
Urban Environments ◽  
Plastic Waste ◽  
Waste Materials ◽  
Waste Plastic ◽  
Plastic Recycling ◽  
Plastic Products

<p>Plastic waste presents a real global challenge and a threat to health, environment and the global economy. While awareness of the devastating effects of plastic waste on the environment has increased, the production of plastic products is still on the rise. As a result, many countries do not prioritise waste plastic recycling or the export of plastic wastes to other countries for recycling. However, the products from recycled waste plastics are considered to be of low quality and uneconomical to produce on large scale, thus making individuals and corporations giving preference using plastics from virgin materials rather than producing products from recycled plastics. These is therefore a need to develop an effective process through the use of technology to upcycle plastic waste locally to produce products of higher value from waste plastic. The current research sought to investigate the potential of distributed upcycling to change the production and consumption of plastic products in future. To this end, the study sought to prepare high value design application for upcycling and investigated how they could be implemented through large-scale 3D printing in urban environments. To achieve this, the researcher collected plastic waste materials from Wellington in New Zealand to be used in the study experiments. The plastic waste materials were first cleaned, sorted and cut into small pieces using a granulator before being taken through thermal processes to dry them out and set the right temperatures to ensure consistency of the plastic waste extrusion before being taken through the extrusion process. 3D Printing was used to design and make various final products from the recycled plastic waste. Experimentation with different formulations of waste plastic led to production of a high-quality filament successfully achieving the study objectives. As such, upcycling plastic waste using 3D Printing technology provides a locally viable solution to making useful products in large scale as a model for future development.</p>

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