pet documentary

Polyethylene terephthalate (sometimes written poly(ethylene terephthalate)), commonly abbreviated PET, PETE, or the obsolete PETP or PET-P, or referred to by the brand name Dacron, is a thermoplastic polymer resin of the polyester family and is used in synthetic fibers; beverage, food and other liquid containers; thermoforming applications; and engineering resins often in combination with glass fiber. The term polyethylene terephthalate is a source of confusion because this substance, PET, does not contain polyethylene. Thus, the alternate form, poly(ethylene terephthalate), is often used in scholarly journals for the sake of accuracy and clarity. Depending on its processing and thermal history, polyethylene terephthalate may exist both as an amorphous (transparent) and as a semi-crystalline polymer. The semicrystalline material might appear transparent (particle size < 500 nm) or opaque and white (particle size up to a few microns) depending on its crystal structure and particle size. Its monomer (bis-β-hydroxyterephthalate) can be synthesized by the esterification reaction between terephthalic acid and ethylene glycol with water as a byproduct, or by transesterification reaction between ethylene glycol and dimethyl terephthalate with methanol as a byproduct. Polymerization is through a polycondensation reaction of the monomers (done immediately after esterification/transesterification) with water as the byproduct. The majority of the world's PET production is for synthetic fibers (in excess of 60%), with bottle production accounting for around 30% of global demand. In the context of textile applications, PET is referred to by its common name, "polyester," whereas the acronym "PET" is generally used in relation to packaging. Polyester makes up about 18% of world polymer production and is the third-most-produced polymer; polyethylene (PE) and polypropylene (PP) are first and second, respectively. PET consists of polymerized units of the monomer ethylene terephthalate, with repeating C10H8O4 units. PET is commonly recycled, and has the number "1" as its recycling symbol.

Major Facts About Pet

Facts On Pet Know the Facts PET plastic (also known as PETE and designated by a recyclable “1”) does not contain BPA. Most single-serve plastic bottles, including those for water, soft drinks and juices, are made with PET. PET is globally recognized as a safe, recyclable packaging material. Numerous tests have created a broad scientific consensus that PET is non-toxic and is a safe material for the storage of food and beverages. Facts on PET supports the efforts of regulators to ensure that plastics are safe for the public through scientific testing and analysis. PET Safety The International Life Sciences Institute, a nonprofit organization dedicated to advancing the scientific understanding of topics related to food safety, toxicology and risk assessment, has drafted a comprehensive review of PET available as a PDF. There are numerous sources for accurate information about PET and the plastics industry. We encourage you to learn about PET from knowledgeable sources in the academic and regulatory communities. To submit questions about PET, please e-mail us at facts@factsonpet.com. Sustainability PET is a cost-effective and environmentally friendly packaging option. A recent Life Cycle Analysis (LCA) conducted by the Allied Development Corporation determined how the environmental footprint and greenhouse gas emissions of manufacturing and transporting PET relates to alternative forms of packaging. The first study found that in North America, PET is the most favorable alternative when compared to aluminum cans and glass bottles for a 355 ml carbonated soft drink application. When measuring greenhouse gas emissions and energy consumption, PET containers had the best performance. The following LCA studies relating to PET are available for viewing: CSD Beverage Package Performance in North America CSD Beverage Package Performance in Europe Wine Package Performance in North America Bottlers have been consistently reducing the amount of material that goes into manufacturing beverage containers. Half-liter plastic water bottles now use as little as 12 grams of PET, nearly 40% less than the average amount just a few years ago. Likewise, soft drink bottles, though heavier to keep in carbonation, are becoming increasingly lighter. These lightweight PET bottles require fewer raw materials to produce, less fuel for transport and are still completely recyclable. We encourage the development of new technologies to decrease the environmental impact of PET containers, increase recycling services and improve consumer recycling habits of PET and other recyclable products. Husky Injection Molding Systems (www.husky.ca) recently announced the development of new manufacturing equipment that helps increase the amount of recycled material in PET bottles, helping to make them even more sustainable. Know Your Plastics Most plastic containers are labeled with a recycling code, a single digit ranging from 1 to 7 that helps recyclers sort the different kinds of plastics in the market. While the Society of the Plastics Industry (SPI) created the code to facilitate recycling, consumers can use the system to understand what kind of plastics can be recycled in their area.