Properties of Recycled Polyester
5
Fig. 3 Process of polyester recycling
the environment. These materials do not pose any direct damage to the living organisms and the ecosystem, but their nonbiodegradable nature remains as one of the
biggest threat worldwide resulting in the elevation of polyester solid waste. In addition, their greatest defiance against the biological degradation and environmental
factors pulls the polyesters into the list of major harmful pollutants. The remediation
of polyester waste can be effectively done by two approaches such as incineration
and recycling. As the incineration process emits noxious gases into the environment
which are capable of causing adverse health disorders and damaging the ecosystem.
Uncertainty, the recycling approach will be chosen as an effective method for managing polyester waste. The recycling of polyesters reduces the higher expenditure
involved in the production of virgin fibers. In addition, it also paves the way in conservation of energy sources [7]. The process of recycling of polyesters is depicted in
the Fig. 3.
4 Identification of Plastic and Its Recycling Code
Before entering into the recycling process, there is frequently a need to distinguish
which specific plastic material has been utilized for the guaranteed item. Most purchasers perceive the kinds of plastics by the numerical coding framework made by
the Society of the Plastics Industry (SPI) in the late 1980s. The sort of plastic that
the compartment is made out of is obviously stepped onto it. The image of a triangle
framed by three arrow mark is the common symbol of the type of plastic; there is
likewise a number inside and a letter code underneath. Based on the numbers inside
the triangle the plastics are distinguished:
(1) Poly(ethylene terephthalate) (PETE or PET)
PET is one of the major polymer used in the food packaging industries, water
bottles, and construction industries. The recycled PET in the form of fibers is
used in the pillow manufacturing and carpet industry. Majority of the recycled
5
Fig. 3 Process of polyester recycling
the environment. These materials do not pose any direct damage to the living organisms and the ecosystem, but their nonbiodegradable nature remains as one of the
biggest threat worldwide resulting in the elevation of polyester solid waste. In addition, their greatest defiance against the biological degradation and environmental
factors pulls the polyesters into the list of major harmful pollutants. The remediation
of polyester waste can be effectively done by two approaches such as incineration
and recycling. As the incineration process emits noxious gases into the environment
which are capable of causing adverse health disorders and damaging the ecosystem.
Uncertainty, the recycling approach will be chosen as an effective method for managing polyester waste. The recycling of polyesters reduces the higher expenditure
involved in the production of virgin fibers. In addition, it also paves the way in conservation of energy sources [7]. The process of recycling of polyesters is depicted in
the Fig. 3.
4 Identification of Plastic and Its Recycling Code
Before entering into the recycling process, there is frequently a need to distinguish
which specific plastic material has been utilized for the guaranteed item. Most purchasers perceive the kinds of plastics by the numerical coding framework made by
the Society of the Plastics Industry (SPI) in the late 1980s. The sort of plastic that
the compartment is made out of is obviously stepped onto it. The image of a triangle
framed by three arrow mark is the common symbol of the type of plastic; there is
likewise a number inside and a letter code underneath. Based on the numbers inside
the triangle the plastics are distinguished:
(1) Poly(ethylene terephthalate) (PETE or PET)
PET is one of the major polymer used in the food packaging industries, water
bottles, and construction industries. The recycled PET in the form of fibers is
used in the pillow manufacturing and carpet industry. Majority of the recycled