- Plastic covers a range of synthetic or semi synthetic polymerization products. They are composed of organic condensation or addition polymers and may contain other substances to improve performance or economics. There are few natural polymers generally considered to be "plastics". Plastics can be formed into objects or films or fibers.
- The history of plastics goes back more than 100 years; however, when compared to other materials, plastics are relatively modern. Their usage over the past century has enabled society to make huge technological advances.The first man-made plastic was unveiled by Alexander Parkes at the 1862 Great International Exhibition in London.Plastics did not really take off until after the First World War, with the use of petroleum, a substance easier to process than coal into raw materials.
- Plastics are divided into two distinct groups: thermoplastics and thermosets. The majority of plastics are thermoplastic, meaning that once the plastic is formed it can be heated and reformed repeatedly. This property allows for easy processing and facilitates recycling. The other group, the thermosets, can not be remelted. Once these plastics are formed, reheating will cause the material to decompose rather than melt.
- Flexural properties of plastics are important to many applications. ASTM method D790 describes the appropriate procedure in detail. Fixtures for three point and four point loading are used to evaluate rigid and semi-rigid materials.Compressive properties are also important for many molded parts as described in ASTM D695. Plastic foams in particular require compressive testing. Strain gauge extensometers may be directly attached to the specimens.
- The electrical insulation, color, strength and high speed molding qualities have made plastics well suited to electrical appliances ranging from dishwashers and hair dryers, to power tools and automotive components. The aircraft and aerospace industries have used engineering plastics in structural parts and components in aircraft windows, panels and other uses due to its strength and because it is light in weight.
- Plastics can be molded into bottles or components of cars, such as dashboards and fenders. Some plastics stretch and are very flexible. Other plastics, such as polystyrene and polyurethane, can be foamed. Plastics are materials with a seemingly limitless range of characteristics and they have many inherent properties that can be further enhanced by a wide range of additives to broaden their uses and applications.
- Corvaglia total annual market volume for moulds is estimated USD 60 million, whereas total annual closures business volume for plastic closures is estimated USD 1.5 billion. This was the reason for Corvaglia AG to go a step further and expand vertically in order to siphon off the earnings from this highly profitable market. Actually, Corvaglia Closure business runs two production sites.
- In response companies are slashing production costs and looking to diversify into custom-made closures as a route to margin improvement, AMI stated. About 158 billion plastic closure units were produced in the Western European market last year, making up about 40 per cent all closures. Of these 66 per cent of the plastic closures were for used for beverages. Overall the production of plastic caps and closures will grow on average by 5.6 per cent per year, while that for metal will decline by about three per cent per year. As a result plastic closures will account for nearly half of the market by 2009.
- France and Germany are the two largest markets, each producing nearly 36 billion closures in 2004. In France the market is driven by mineral water manufacturers. In Germany the market is driven by the drinks sector and as a location of European production centres for leading brands in the personal care and household cleaning sectors.
Entrepreneur who want the information
can E-Mail us to