It provides a summary of the quantities and type of plastics in the waste stream and also the main. Since the previous edition, several new materials have been announced. The society of the plastics industry spi established a classification system in 1988 to allow consumers and recyclers to identify different types of plastic. Any particulate material added to a plastic will behave like a filler. The plastics revolution eindhoven university of technology. Publishers pdf, also known as version of record includes final page, issue and volume numbers. Ldpe is the plastic used for plastic bags in grocery stores. Code 7 is used to designate miscellaneous types of plastic not defined by the other six codes.
Buckets, automobile parts, crates, tanks, pipes, bottles, carry bags, ropes, profiles etc. On a sunny day at the park, where would you prefer to sit and relax on a wooden bench, stone pedestal, concrete sidewalk, or grassy lawn. It is usual to express the temperature coefficient of the free volume as being the. Affordable and search from millions of royalty free images, photos and vectors. It probably depends on if you want to be warm or cool. Pdf plastic products in developing and civilizing countries are. Plastic processing can be defined as the process of converting the plastics raw material into semifinished products.
Injection, extrusion, blow, compression and transfer moulding. During the polymerization process, depending on the type of polymer, side chains. Each type of filler lends a unique property set to the host polymer. This document pdf may be used for research, teaching and private study purposes. Plastics technology handbook plastics properties and testing. The number indicates the type of plastic used to make the product you are holding right now. There are many different types and sizes of vacuum forming machine available. Plastics materials and plastic products are extremely resource.
Complete plastic data sheets for engineering parts design. As with previous editions, an explanation of the properties of these new materials in terms of their structure and morphology involving the principles laid down in the earlier chapters is presented. For example, polystyrene is rarely recycled because the process is usually not cost effective. Typical reactions for chain assembling are polyaddition continuous or step wise and condensation polymer ization polycondensation 1 figure 1. Polycarbonate pc is used in baby bottles, compact discs, and medical storage containers. Compare various plastic materials using specific property and design criteria. Examples of this type of polymers are polypropylene pp, lowdensity polyethylene ldpe. This type of plastic has the simplest plastic polymer chemical structure, making it very easy and very cheap to process. Polyethylene terephthalate pete or pet highdensity polyethylene hdpe polyvinyl chloride pvc lowdensity polyethylene ldpe polypropylene pp polystyrene or styrofoam ps miscellaneous plastics includes. Plastics material data sheets sortable compare materials. Fillers are an extremely diverse group of materials.
In addition, developments also continue with condensation polymers with several new polyester type materials of interest for bottleblowing andor degradable plastics. Polycarbonate and polylactide are included in this category. Amorphous free standing zanussi oz fridge, with insulation and. Plastic is material consisting of any of a wide range of synthetic or semisynthetic organic. Recycling certain types of plastics can be unprofitable as well. A stiff plastic used for more robust plastic packaging like laundry detergent containers as well as for construction applications or trash bins. Many of these materials result from metallocene catalyst technology. Ldpe polymers have significant chain branching including long side chains making it less dense and less crystalline structurally ordered and thus a generally thinner more flexible form of polyethylene. There are 7 kinds of plastics which are lowdensity, durable. See a full breakdown of each kind of plastic, along with its. Some of them are reusable, the others produce hazardous material after several uses. This information will help you sort plastic materials more effectively for recycling.