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- Submitted by: sankar
- Views: 664
- Category: Politics: Political Science
- Date Submitted: 09/03/2011 09:06 AM
- Pages: 6
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Plastic Bag Recycling
Plastic is a non-biodegradable product and a harmful pollutant of the air, land, and water bodies. Each day tonnes of plastic wastes are disposed off into the surroundings which has proved to be harmful to the nature and the living organisms. Though plastic bags served for better replacement of paper bags to prevent deforestation, it has turned out to be a health hazard with its non- degradable property. Plastic bags are made from monomer ethylene, the molecules of which are made into polyehtylene. Three types of plastic bags are made depending on the density, which provides tensile strength and clearness or crystallinity of the plastic.
Reusing Plastic Bags
First step in recycling plastic bags is by reusing them before disposing off for recycling process. The manufacture of plastic bags has been encouraged because it consumes less energy for to manufacture compared to paper bags. Moreover, they have light weight, compact, reusable, fully recyclable, and have high fuel value. State recycling reports show residents diverted more than 540 thousand tons of recyclables from landfills in 2008 whose number has reached beyond 576-thousand tons in 2009.
Recycling Process
Plastic bags are collected for the recycling process. These are then cut into pieces and washed. It is then passed through an extruder; a device, which moves the bits of plastic to heat it to temperature till it melts. It is then burnt. High temperature is ensured for its melting. A screw device facilitates the movement of this melted plastic through a tube with electric heaters, which is further pushed
out the end through holes. The strings that look like spaghetti is chopped into little beads which are then cooled and collected into large bins.
These beads are mixed with other plastic beads to make new plastic bags or other products. Sometimes a dye is added to beads. The beads are then allowed to pass through a hopper to make new plastic bags. The hopper full of beads...
Plastic is a non-biodegradable product and a harmful pollutant of the air, land, and water bodies. Each day tonnes of plastic wastes are disposed off into the surroundings which has proved to be harmful to the nature and the living organisms. Though plastic bags served for better replacement of paper bags to prevent deforestation, it has turned out to be a health hazard with its non- degradable property. Plastic bags are made from monomer ethylene, the molecules of which are made into polyehtylene. Three types of plastic bags are made depending on the density, which provides tensile strength and clearness or crystallinity of the plastic.
Reusing Plastic Bags
First step in recycling plastic bags is by reusing them before disposing off for recycling process. The manufacture of plastic bags has been encouraged because it consumes less energy for to manufacture compared to paper bags. Moreover, they have light weight, compact, reusable, fully recyclable, and have high fuel value. State recycling reports show residents diverted more than 540 thousand tons of recyclables from landfills in 2008 whose number has reached beyond 576-thousand tons in 2009.
Recycling Process
Plastic bags are collected for the recycling process. These are then cut into pieces and washed. It is then passed through an extruder; a device, which moves the bits of plastic to heat it to temperature till it melts. It is then burnt. High temperature is ensured for its melting. A screw device facilitates the movement of this melted plastic through a tube with electric heaters, which is further pushed
out the end through holes. The strings that look like spaghetti is chopped into little beads which are then cooled and collected into large bins.
These beads are mixed with other plastic beads to make new plastic bags or other products. Sometimes a dye is added to beads. The beads are then allowed to pass through a hopper to make new plastic bags. The hopper full of beads...