Plastics are manufactured in different forms such as moulding pipes, sheets and films. They are formed or expanded to produce materials of low density. Dissolved in solvents or dispersed as emulsions, they are used in paints, varnishes and adhesives. At present, plastics find use in buildings mainly in thin coverings, panels, sheets, foams, pipes etc. skilful use of plastics will expand the usefulness and life of conventional building materials and help them to function more efficiently and
Look around, and try to find an everyday object that is not made out of plastic. You should find only a few. Plastic takes up more than 75% of our everyday items… And humans are facing the pollution that plastic is causing to the earth. There isn 't a realistic solution to this, because plastic is used in automobile tires, and also is used in electronic devices, silicon etc. The reason plastic is used in many products is because it can withstand up to tons of pressure per cm3, is cheap, is durable, and finally, there is no worry for discoloring.
After the invention of different methods for the polymers’ manufacturing, the industry of plastics developed significantly. Plastic has several essential advantages, such as light weight, durability, an available price compared with other materials and an ability to be easily molded (Andrady and Neal 2009). That is why plastics are progressively more used in many areas; for example, in packaging, transportation, medicine, sport, agriculture, electronics, building and construction. By controlling the temperature inside the package using oxygen scavenger technology and gas-flush packaging, it is possible to provide storage and secure of products (Andrady and Neal 2009). Therefore, plastics have a great contribution to the safety of water and food packaging, and subsequently to the consumers’ health.
Plastic bags and paper bags are used for various purposes such as for shopping, packaging, disposal, carrying and transporting of products from one place to another etc. Millions of people all over the world uses plastic bag as compared to paper bag because they are densely used everywhere (Cave, 2011). The manufacturing process of plastic bags consumes less energy but they have an adverse effect on the environment than paper bags. These plastic bags are generated from the natural resources like petroleum as well as through natural gas because both resources are easily available in a plenty of amount and are cheaper than paper bags. However, paper bags are manufactured by the tree named as “Pulpwood” and they consumes 4 times more energy than plastic bags.
Plastic Bags: The Enemy of the Environment Plastic is a commodity that people use everyday which makes daily life easier and safer. People take pills, use cell phones, and wear bike helmets in addition to a plethora of other activities, but tend to forget that one common element in all of them is the use of plastic. One of the main sources of plastic that has been polluting the environment over the last few decades are plastic bags. Plastic bags can be found in nearly every store to hold groceries, accessories, or toys. While plastic bags may provide convenience for customers, there is an overwhelming concern about the effect of them on the health and safety of people, marine life, and the surrounding environment.
1.0 Introduction Plastics have proven to be essential to society. The versatile nature of plastics makes it one of the most sought-after material. According to The New York Times (2011), close to 300 million tons of plastic is being produced annually. Furthermore, an article by The World Counts (2014) suggests that only 1 to 3% of the plastic produced is recycled globally. Even more worrying is the fact that plastic is a non-biodegradable material which means that it is extremely difficult to dispose of, thus resulting in a surplus of unwanted plastic that has no means of proper disposal.
Typical uses of Plastic made Products and Major Industries in Which Plastic Fabrication Process is used? Polyethylene Terephthalate: 2-liter soda bottles, single-use water bottles, cooking oil bottles, peanut butter jars, etc. High Density Polyethylene: Detergent bottles, yoghurt tubs, milk jugs, bottle caps, backpack frames, hard hats, hula hoops, etc. Polyvinyl Chloride: Plastic pipes, Saran wraps, outdoor furniture, flooring, siding, etc. Polypropylene: Bottle caps, food containers, drinking straws, etc.
With the constant development in the world, plastic materials are considered as one of an essential product of human’s invention. It has become the main industrial item in our current days. As can be seen in these days that there are new and various types of plastic materials. Plastics are used in industry, agriculture, education and medicine, thus, people’s lives have become very dependent on it. Lately, the studies and tests demonstrate the impact of plastic materials not only on the human health, but also animals, and the environment.
Plastic is a word that originally meant “pliable and easily shaped.” It only recently became a name for a category of materials called polymers. The word polymer means “of many parts,” and polymers are made of long chains of molecules. Polymers are abound in nature. Over the last century and a half humans have learned how to make synthetic polymers, sometimes using natural substances like cellulose, but more often using the plentiful carbon atoms provided by petroleum and other fossil fuels. Synthetic polymers are made up of long chains of atoms, arranged in repeating units, often much longer than those found in nature.
As you are reading this article, you may find several plastic items within your reach, your computer or phone, a pen, maybe an old food container in your kitchen. Today, plastic is everywhere in our lives. It has become an icon of convenience culture. IS IT REALLY SAFE? Before we take a call whether plastic we are using is safe or not, it is important to understand different type of plastics.