IMPORTANCE OF PLASTIC:- Plastics are a subset of materials known as Polymers. These are composed of large molecules formed by joining many smaller molecules together (monomers). Other kinds of polymers are fibres‚ elastomers‚ surface coating and biopolymers‚ such as cellulose‚ proteins and nucleic acids. Plastics owe their name to their ability to be shaped to form articles of practical value by various conversion and forming processes. These are some peculiar properties of plastics materials‚ which
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From the time we hit our plastic alarm clock in the morning until the time we squeeze tooth paste out of its plastic sleeve onto our plastic tooth brush when we go to bed‚ we are surrounded by plastic. Our food is packaged in it‚ our children play with toys made from it‚ we talk on plastic cell phones‚ and we sit on chairs of plastic at work writing with plastic pens‚ drinking from plastic water bottles. Plastic is everywhere. Where does all this plastic end up? It does not just disappear when we
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|Just about everyone knows that plastic valves‚ pipes‚ tanks‚ and fittings are molded‚ but there ís a bit more to it than that. Knowing something | |about the processes that are used to produce these products will help to make you more knowledgeable in selecting and using them in various | |applications. | |
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A plastic material is any of a wide range of synthetic or semi-synthetic organic solids that are moldable. Plastics are typically organic polymers of high molecular mass‚ but they often contain other substances. They are usually synthetic‚ most commonly derived from petrochemicals‚ but many are partially natural.[1] A plastic material is any of a wide range of synthetic or semi-synthetic organic solids that are moldable. Plastics are typically organic polymers of high molecular mass‚ but they often
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devices‚ plastics are now used in almost every aspect of everyday life‚ creating a much simpler and safer world. Although plastics carry hundreds of benefits‚ these do not completely counter the harmful effects that they have on the environment and on the health of humans. The amount of plastic that has been created since 2000 is nearing the total amount that was created in the entire last century‚ and as this demand increases‚ so does the knowledge of their environmental costs. Plastics are now known
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Polymer technology explained using text and animations Multimedia Design and Technology Education Plastics Technology Animations of Processes This “Plasics Module” covers the plastics technology specifications for KS3 and GCSE courses‚ including: Structure‚ composition and properties of polymers Polymer composites Formulae of common polymers Hazards – polymers leaching chemicals Sustainability Recycling Abbreviations of polymers
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recycling of plastics bringing any long-term benefits to the environment? Plastics are one of the most popular building materials of modern human culture‚ but its widespread has brought many problems and caused environmental issues of extraordinary scale. Throughout the years‚ discarded plastics are accumulating as debris in landfills and in natural habitats worldwide. To control this issue‚ governments of many countries have established industrial processes for transforming discarded plastic into useful
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reputation as a high-quality maker of plastic molds‚ especially "thinwall" molds used to make vending cups and other containers. As demand for the injection-molding machinery rose around the globe‚ Husky expanded to Europe in the mid-1960s and established a joint venture in Japan in 1971. A new line of molding systems‚ tailored for the production of PET bottle preforms‚ pulled Husky out of its crisis by the end of the 1970s. Profits from this area allowed the company to expand into other product lines
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EPIC B521 G111 X721 2007 Ekoplastik PPR system Assembly regulations PPR FOR WATER AND HEATING Intelligent Solutions for Plumbing & Heating Projects ASSEMBLY REGULATIONS PPR FOR WATER AND HEATING CONTENT X. 4 4 4 4 4 Assembly regulations 1. General 2. Linear expansion and contraction 3. Spacing distances of pipe supports 4. Pipe fixing 5. Pipeline routing 6. Linking of pipes into a system 7. Insulation 8. Pressure test XI. Material Transport and Storage
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Ocean Turns Into Plastic Island? Could Happen Have you ever wondered what happens to that plastic bottle or plastic bag that you throw away? What if I told you that the bag and the bottle are slowly killing off marine life and slowly turning our oceans into dumps? This is the case and the problem is only growing and everybody is responsible for it and everybody needs to pitch in and clean up this mess. We all use plastic because it’s convenient for us‚ but in the end it ends up killing the marine
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