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A plastic bag, poly bag, or pouch is a type of container made of thin, flexible, plastic film, nonwoven fabric, or plastic textile. Plastic bags are used for containing and transporting goods such as foods, produce, powders, ice, magazines, chemicals, and waste. It is a common form of packaging.
Plastic bags were found to constitute a significant portion of the floating marine debris in the waters around southern Chile in a study conducted between 2002 and 2005. [29] Plastic bags don't do well in the environment, but several government studies have found them to be an environmentally friendly carryout bag option.
Polyethylene was first synthesized by the German chemist Hans von Pechmann, who prepared it by accident in 1898 while investigating diazomethane. [12] [a] [13] [b] When his colleagues Eugen Bamberger and Friedrich Tschirner characterized the white, waxy substance that he had created, they recognized that it contained long −CH 2 − chains and termed it polymethylene.
The winner of the 2014 [1] and the 2016 [2] People's Voice Webby Award, [3] the show is downloaded more than 1 million times per week and is consistently on iTunes’ Top 10 podcast rankings. [4] Stuff You Should Know's "beautifully, beautifully done" production has set "the audio standard," according to podcast reviewers Pod on Pod .
Polyethylene or polythene film biodegrades naturally, albeit over a long period of time. Methods are available to make it more degradable under certain conditions of sunlight , moisture , oxygen , and composting and enhancement of biodegradation by reducing the hydrophobic polymer and increasing hydrophilic properties.
HDPE is known for its high strength-to-density ratio. [4] The density of HDPE ranges from 930 to 970 kg/m 3. [5] Although the density of HDPE is only marginally higher than that of low-density polyethylene, HDPE has little branching, giving it stronger intermolecular forces and tensile strength (38 MPa versus 21 MPa) than LDPE. [6]
The Sonali Bag, also known as the Golden Bag, Jute Polymer, or Eco-friendly Poly Bag (in Bengali: সোনালী ব্যাগ), is a bag made of a biodegradable bioplastic. It was created in Bangladesh as a sustainable alternative to traditional plastic bags by scientist Mubarak Ahmad Khan .
A 50 cent plastic bag levy was implemented on 1 April 2015 across Hong Kong. The use of plastic bags dropped 90% after the introduction of the levy. [79] Signs show that Hong Kong is phasing out the use of plastic bags at a dramatic rate. A sign proclaiming that polythene bags thinner than 30 μm are prohibited in Kasaragod, Kerala, India.