summary of polythene in urdu
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Summary
Hundreds of new products are appearing in the market every day, which are dramatically proliferating into the common man’s life. Polythene is one such product, which due to its ease of use, hardiness, lightweight, waterproof nature and low cost has found wide applicability in modern society. It is largely used for packaging and storing and is most widely used as carry-bags. As the consumption of polythene has increased enormously, so has the accumulation of waste polythene, particularly in urban areas! Polythene bags lying in garbage heaps and blowing here and there has become a common sight today at most of the public places, residential colonies, tourist complexes etc., which not only is an eye-sore but also has serious environmental implications.
Polythene is non-degradable in nature in the sense that it is not degraded easily and will take hundreds of years to degrade. Chemically, polythene is a polymer of ethylene of high molecular weight. It is a thermoplastic material which when heated gets softened due to weakening of intermolecular forces and melts. On cooling, it solidifies again.
The main problem with polythene is associated with its non-degradable nature which raises the question regarding its disposability. After using the consumables contained within the polybags, the latter are just thrown away. Being light in weight, they blow away with wind and reach the drains and often cause blockage of sewage and flooding of streets, much to the discomfort of the public who themselves are the causative agents of such problems. It is a common practice to pack up the household trash in polybags and throw it away. Hardly do we realise that by doing so we are not even allowing the biodegradable kitchen-waste to get decomposed freely in the soil by microbes or even allowing the same to be eaten by animals!
Quite often cows and stray animals try to tear open the polybags in search of food and get injured by broken glass, blades, pins etc. contained therein, because very few of us ever care to segregate these materials from the kitchen waste
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