The seven types of plastics are Polyethylene Terephthalate (PET or PETE or Polyester), High-Density Polyethylene (HDPE), Polyvinyl Chloride (PVC), Low-Density Polyethylene (LDPE), Polypropylene (PP), Polystyrene, etc. CLASSIFICATION ACCORDING TO STRUCTURE OF ATOMS According to this classification , the plastics are divided into 2 groups. @�a3���ޟ癚�� �~�|�������v.����I�܋E&����P���a�M9@V��$�T��, =���� �E��Ϸ��-X7�\2���ޙ�2��-I�[�g[O%M�`������V�z�.���rz@���`� R0 Important classes of plastics exist under each of these categories. HDPE (High-density polyethylene) Example: shampoo containers or milk bottles. HDPE (High Density Polyethylene): One of the newest types of plastics, HDPE was first created in the 1950s by Karl Ziegler and Erhard Holzkamp. Thermoplastics. Are shaped by heat, their physical properties change gradually. Plastics don't corrode, though they can degrade in UV, a component of sunlight, and can be … Plastics can be broadly classified as standard plastics, commodity plastics, engineering plastics, and high-performance plastics. PET plastics are recycled into carpet, furniture, and fiber for winter garments. Polypropylene. Nearly all types of plastics can be recycled, however the extent to which they are recycled depends upon technical, economic and logistic factors. Examples include soda and water bottles, medicine containers, and many other common consumer product containers. null. Examples of thermosetting plastics are silicones, urea aldehyde and Bakelite. For chemically resistant plastic, view our Chemical Resistance of Plastics chart. HDPE is the most commonly recycled plastic and is usually deemed safe for food contact by the FDA. Plastics are usually classified by: the chemical structure of the polymer's backbone and side chains; some important groups in these classifications are: the acrylics, polyesters, silicones, polyurethanes, and halogenated plastics. Plastic resins are also used in a variety of container and packaging products, such as PET beverage bottles, HDPE bottles for milk and water, and a wide variety of other resin types used in other plastic containers, bags, sacks, wraps and lids. Plastics can be divided into two major categories: 1. Following are some typical products you will find for each of plastic: PVC (Plasticised Polyvinyl chloride or polyvinyl chloride)Example: cordial, juice or squeeze bottles. As a valuable and finite resource, the optimum recovery route for most plastic items at the ‘end-of-life’ is to be recycled, preferably back into a product that can then be recycled again and again and so on. 8 0 obj ABS plastic sheets create a clean cosmetic surface for prototypes and are easier to paint than other types of plastic. Of course, there are many differences in the plastics classified as miscellaneous by recycling programs. Polystyrene. Plastic number 7 includes new plastics, bioplastic, and items composed of different types of plastics. This recycling logo also stands for polycarbonate (PC) which contains highly dangerous BPA (Bisphenol A). The classification is intended to define and order those families which summarize physical similarities between grades of polymers which are relevant to the engineering designer by virtue of chemical similarity. Share it ! Assuming that the plastic container material does not exceed the 5 percent weight/volume allowance, the Commodity could then be considered a Class III Commodity. This process is called cracking because a catalyst is used to break larger molecules into smaller ones.The smaller molecules are those such as ethylene (ethane), C 2 H 4; propylene (propene), C 3 H 6; butane, C 4 H 8; and other hydrocarbons. 2. In other words, while other elements might be present, plastics always include carbon and hydrogen. x��]������b��i-�]&�T�r�+�T�ۘ%� fI ��'�z��������P��Q�]�ue��]�^޽���'����^�ʍ�L���~dL�9sx�⮮��7��F���������U����{��Γ���x��[wGkl���t?�{��8����]�h��`�r�k[痮?�]]U�5�]ָ�_�ޟ�z�;�t}"��>�G�Mk�����a���֘�Q1���$� �ʮ���_Ǯ�2��:"�����u���7�vK�fD��q�X�7�I��K�}���F@8`� �?S$h ��{r���iL{�������p Gh�����^a��-�ZI�����i:��,¶���g��'q����[�C՞�:M6�%Ds��2����@��D؁5u��̗s���������������q�Vaif���ᳱ�Wm���}5�U��~. 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. Plastic Number 7 - Miscellaneous Plastics The remaining plastics include: polycarbonate, polylactide, acrylic, acrylonitrile butadiene, styrene, fiberglass, and nylon. Now, let’s discuss the Classification or Types of Plastics. Plastic, polymeric material that has the capability of being molded or shaped. Examples include polyurethanes, polyesters, epoxy resins and phenolic resins. The versatility of plastic materials comes from the ability to mold, laminate or shape them and to tailor them physically and chemically. For example, China's polymer identification system has seven different classifications of plastic, five different symbols for post-consumer paths, and 140 identification codes. PET plastics are recycled into carpet, furniture, and fiber for winter garments. This is because plastics can be made to suit almost any application. Scientists can make plastics that are see-through, plastics that block oxygen, and even plastics that stretch and then return to their original shape. Yoghurt pots, foam hamburger boxes and egg cartons, plastic cutlery, protective packaging for electronic goods and toys. classification of plastics in hindi, Types Starch-based plastics. Typically, ABS plastic sheet is used on dashboards, wheel covers, and body parts because of its strength, low-temperature resistance, and rugged surface that doesn’t easily scratch. Thermoplastics are those plastics which can be molded again and again by use of heat. For example, polyethylene, polystyrene, polypropylene, and polyvinyl chloride can all be categorized as commodity plastics. Examples of thermoplastics are polyethene, polystyrene and PVC (polyvinylchloride). Bio-plastics are made from marine or plant-based materials (such as corn and sugarcane) instead of petroleum and, therefore, are considered more environmentally-friendly than regualar plastic. These types of plastics come in either of two forms, expanded or unexpanded. They take thousands of years to decompose. There are different systems like injection and molded.… �_�����J��$S��c��q��� 1`51�!1�hIk/OB��֤��J���wF|n����.��Àq���.��ھ��|�o\=��;�� "B���5:����_���!q}H�&�����'Y��I�+���]$�QN �� �m ��/���}*�i���v>} ��������;Gr�_ȃ~'! This web page is a brief summary of plastic … Once cooled and hardened, these plastics retain their shapes and cannot return to their original form. They are hard and durable. Polycarbonate (PC) is the most common plastic in this category, isn’t used as much in recent years due to it being associated with bisphenol A (BPA). The easiest and most common plastics to recycle are made of polyethylene terephthalate (PETE) and are assigned the number 1. 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