Sustainability has become and important issue in the world as the Green Movement continues to gain popularity. One area where research is being conducted to find a more sustainable production process is plastic films. Plastic films are defined as a packaging material, usually less than ten mils (a mil is 0.001 inch) in thickness, with an average of 0.7–1.5 mils, that can be used as a bag or wrapper. They are composed of a broad range of materials, which can be simple or complex depending on what a particular product or package demands (Osborn & Jenkins, 1992). There are two main categories of films used in packaging, conventional films and sustainable films.
Conventional plastic films are much more widely used and have a larger market than sustainable films. The film can be made with different resins, each of which have unique structures and are ideal for specific applications. The films can be clear or colored, printed or plain, single- or multilayered and are often combined with other materials such as aluminum and paper. Examples of plastic films usages include Ziploc bags, trash bags, grocery sacks, drycleaner bags, and plastic wrap.
The only common characteristic of all plastic conventional film is that it is flexible in nature. The most common resin used to create these plastic film packages is low-density polyethylene (LDPE). As a film LDPE has decent clarity, is a good moisture and gas barrier, and it can be heat sealed while retaining its strength and flexibility. Polypropylene (PP) is also a common resin used to create plastic film. It has an excellent moisture barrier, good transparency, gloss, and tensile strength. The PP resin also has a high melting point, which makes it appropriate for packages that need to be st...
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...petroleum, which has been around for significantly longer and has a strong hold on the market. As sustainability continues to become an emerging concern for consumers bio-plastics will grow in importance in the packaging industry. Similar to auto companies who are searching for alternative sources of energy for automobiles, chemical companies are searching for alternatives to manufacture of plastic materials (Perkins & Lindsay, 2011). We have a limited supply of fossil fuels and ate the rate plastic products such as film are being produced and consumed each year, it is hard to say how long they will last. Bio-plastics currently represent only a small fraction of the emerging area of sustainable development, but their usage is growing. There is great potential for bio-plastics as replacements for the less-sustainable fossil fuel based plastics used in plastic film.
• Lowering freight costs because of the light weight of plastics. • Plastics can be shaped and made in different patterns hence advantageous for marketing and shipping. • Plastics are made from natural resources such as
National Center for Manufacturing Sciences. (2004, August 11). Environmental Roadmapping Initiative. Retrieved October 14, 2011, from Plastics Impacts, Risks and Regulations: http://ecm.ncms.org/ERI/new/IRRPlastics.htm
The plastic obtained from polyethylene can be pressed into varying shapes, ranging from the simplest to the most complicated. The ethylene market is indirectly driven by the increased polyethylene consumption for the production of several plastic components. In 2011, the global propylene market is valued at more than $ 90 billion and significant growth is anticipated in the coming years. Acrylic fibers and coatings, PVC plasticizers and coatings, polyurethane resins, epoxy resins and propylene polymers are applied on polycarbonates and solvents, that are used in the production of propylene. The automotive industry is the biggest end-user of polypropylene. The enormous expansion of ethylene and propylene production will contribute to the growth of the ethylene and propylene market, along with the rising demand for downstream products from India, China, and the Middle East. Tight environmental regulations, fluctuations in raw material prices and political uncertainties in crude oil producing regions are the main factors limiting the ethylene and propylene market [9].
According to the American Council of Chemistry, plastics, which are otherwise known as polymers, are comprised of carbon, hydrogen, chlorine, nitrogen, sulfur, oxygen, and other elements that are combined through the conversion of natural products like oil, natural gas, or coal (ACA, n.d.). Between 7 and 8 % of the oil and natural gasses produced annually are used either directly in the conversion of such fossil fuels to plastics, or in powering the processes to produce plastics (Hopewell, Dvorak & Kosior, 2009). Plastic combinations can either form as thermoplastics, which are plastics whose atoms are connected in long chains that can be melted and reused, or thermosets, which are plastics whose atoms are arranged in three dimensional patterns that cannot be melted or reused (ACC, n.d.). Plastics are used in a wide range of products. For example, polyesters are used in textiles and fabrics, polyvinylidene chlorides are used for food packaging, polycarbonates are used for glasses and disks, and more. By the United States energy averages of 2015, each kg of plastic produced requires 62-108 mega joules of energy. The plastic requiring the largest amount of energy per kg is silicon which required about 235 mega joules of energy per kg. Three hundred and twenty two million metric tons of plastic produced in 2015 alone, and that value continues to raise, (Global plastic production,
Most of the necessities humans need are provided in supermarkets, in fact supermarkets have become a necessity for our everyday life. They are now the main source of water, food, clothes and everyday tools. Therefore, the plastic bags demanded and supplied in this industry increase every day. In the past decade, we produced as much plastic as we did in the whole twentieth century (Freinkel, 2011). This exponential increase of a non-biodegradable material has negatively impacted our environment immensely. Plastic production requires our dwindling fossil fuel resources, robs away animal lives, litters our beautiful landscapes and even affects our very own well-being. Hence, if plastic production doesn’t diminish immediately, we will suffer great
Polyethylene (PE) is one of the most commonly used polymers which can be identified into two plastic identification codes: 2 for high-density polyethylene (HDPE) and 4 for low density polyethylene (LDPE). Polyethylene is sometimes called polyethene or polythene and is produced by an addition polymerisation reaction. The chemical formula for polyethylene is –(CH2-CH2)n– for both HDPE and LDPE. The formation of the polyethylene chain is created with the monomer ethylene (CH2=CH2).
There is also debate on how much better biodegradable plastics are in the first place. This is because as biodegradable plastics break down, they break up into smaller and smaller pieces, but never quite disappear. This leaves the potential that the plastic would continue entering the food chain. But although biodegradable plastics aren’t perfect, they are still much safer than standard plastic and present a much lower risk. In addition, by making the shift to ban single use plastics, research towards better plastic alternatives will speed up and better solutions will become available. Over time, these new alternatives to plastics may spread to other items that aren’t single use, making an even greater impact on the health of humans and the
Biomass Packaging Co., et al. Plastic in the ocean does not biodegrade, it only breaks down into smaller, and smaller pieces, some pieces are so small they cannot be seen by the naked eye.... ... middle of paper ... ... 11 April 2014.
The 2016 documentary Sustainable, directed by Matt Wechsler provides interesting insights from a food activism perspective into various parts of dominant and alternative American food systems. Calling for a shift back to small-scale farming, the film uses various statistics as well as personal anecdotes to illustrate the benefits of doing so, as well as the dangers of the current model going forward. On the level of small farmers, the film explores the struggles and opportunities associated with maintaining small, diverse farms. Looking at the current dominant model, the film elaborates on some of the harmful techniques used on various levels of the dominant food system – or systems as it argues – and how they are negatively impacting American citizens. Finally, looking at sustainability in the broad context of both theory and practice, the film provides a call to action for the greater good.
In addition, the plastics have shown to generate more damage to the environment in the long-term than any other sources of energy. So, it becomes our responsibility to preserve the environment creating mass awareness. The practice of bio-plastics are an environment friendly method, which doesn’t use the landfills while recycling and deposition, but it is also not that convenient method because the cost of manufacturing bio-plastics are much higher than ordinary method. This directly indicates that the cost of minimizing the waste, the cost of human health and environmental pollution is much higher than the production of
... converting plastic waste into useful products are being affected by pollution; this contamination is found within containers where plastics are collected. But the same risk of pollution carries downside consequences in which workers and people responsible for cleaning and disinfecting the plastic materials are not doing the best to eliminate plastic waste, and to disinfect the infected bacteria and microorganisms from the atmosphere and environment. Organizations from China and India are the largest in the world, they collect and purchase used plastic from United States, Europe, Asia and Latin America (Minguez 2013). These companies do not bother to sanitize the products before the recycling process; for this reason the planet earth is getting a worse environmental condition, and it is destroying lives of living beings, and natural resources as well (Uddin 2014).
Over the course of the past 60 years, an increasing amount of the current population is using plastic and reusable products to try and reduce the amount of waste that is being thrown away. Bisphenol A (BPA) is used to manufacture polycarbonate #7 plastic which have help strengthen plastic bottles, food containers and epoxy resins (University of Minnesota, 2008). BPA is used in a range of products from every day plastic beverage containers and plastic dinnerware, to compact disks, impact-resistant safety equipment, automobile parts, and toys (Centers for Disease Control and Prevention, 2013). The CDC (2013) also states that BPA epoxy resins are used in the protective linings of food cans, in dental sealants, and in other products (Centers for Disease Control and Prevention, 2013).
Millions of plastic bags are given out to consumers by supermarkets and stores to carry their goods in. They are also cheap, light, durable, easy to carry and in many cases, free. The most commonly used shopping bag is made of High Density Polyethylene (HDPE). This type is used in the majority of supermarkets and stores. After these bags are used, they often end up in landfills or as litter, roughly only three percent of plastic bags is actually recycled per year (Planet Ark, 2011). The materials used in making plastic bags make them non-biodegradable. According to the science dictionary, 2011 refers to “these materials cannot be decomposed into environmentally safe waste materials by the action of soil bacteria.” These harmful substances are toxic and take approximately four hundred years to break down, or in this case photo-degrade; which is how plastics made from (HDPE) break down. Since they are not biodegradable, they remain in the environment and are absorbed in soil or water (Indian Centre for Plastics in the Environment, 2010). This essay will discuss the various harmful effects of plastic bags, and demonstrate the risks that these bags impose on humans, animals and the environment. It will also discuss a series of suggested solutions that could help reduce plastic bag usage.
Everyone has heard a cashier one time or another mumble, “Paper or plastic?” as he puts their groceries in a bag, but do shoppers know the effects of each vessel in which they carry their comestibles? There are many issues and benefits to both paper and plastic. The making and recycling of both paper and plastic bags can harm the environment. One must also look at the costs of making each bag. The convenience of each is also something to look at.
are required and less energy is needed to make recycled plastic products than to make