Diagram of plastic. To enhance their properties they often contain additives such as fillers and reinforcements anti degradants and stabilizers flame retardants and plasticizers. A plastic process flow diagram shows the recycling of only certain plastic products such as post consumer plastic or plastic products used to full service capabilities once before being recovered. This technique is used to make large hollow plastic items toys furniture sporting equipment septic tanks garbage cans and kayaks. Typical reactions for chain assembling are polyaddition continuous or step wise and condensation polymer ization polycondensation 1 figure 11.
The rotation evenly distributes the plastic along the walls of the mold. Plastic bags once consumed cause internal blockages and usually result in death. We have also produced an faqs on plastics page which attempts to answer additional common questions on the topic. This code is not required but it is becoming more and more common.
By the data team in a paper published last. Thermoplastics are the plastics that when heated do not undergo chemical change in their composition and so can be molded again and again. On most plastic containers and bottles you will find a small number denoting the type of plastic that it is. 1 material properties of plastics 11 formation and structure the basic structure of plastics or polymers is given by macromolecule chains formulated from monomer units by chemical reactions.
On the next page well learn about new innovations in plastics and how theyre recycled. Larger pieces of plastic can also damage the digestive systems of sea birds and whales and can be potentially fatal. However the underlying attributes of a plastic material are determined by the polymer. Thermoplastics or thermosetting polymers.
The first synthetic plastic bakelite was produced in 1907 marking the beginning of the global plastics industry. Polyaddition as chain reaction. The plastic handle of a spatula that has been deformed by heat. A slide deck summary of global plastics is available here.
Plastic numbers 1 2 4 5 can be recycled. Plastic polymeric material that has the capability of being molded or shaped. This is our main data entry on plastics with a particular focus on its pollution of the environment. This property of plasticity often found in combination with other special properties such as low density low electrical conductivity transparency and toughness allows plastics to be made into a great variety of products.
Plastics are polymers of very high molecular mass.