Biaxially-oriented polyethylene terephthalate (boPET) polyester film is used for its high tensile strength, chemical and dimensional stability, transparency, gas and aroma barrier properties and electrical insulation. Polyethylene terephthalate (aka. ... For the film, see the article Polyester (film) Close-up of a polyester shirt SEM picture of a bend in a high surface area polyester fiber with a seven-lobed cross section Polyester is a category of polymers, or, more specifically condensation polymers, which contain the ester functional group in... It has been suggested that this article or section be merged into Strength of materials. ... A chemical substance is any material substance used in or obtained by a process in chemistry: A chemical compound is a substance consisting of two or more chemical elements that are chemically combined in fixed proportions. ... In geometry, two objects are of the same shape if one can be transformed to another (ignoring color) by dilating (that is, by multiplying all distances by the same factor) and then, if necessary, rotating and translating. ... The word stability has a number of technical meanings, all related to the common meaning of the word. ... This article needs to be cleaned up to conform to a higher standard of quality. ... Lightning strikes during a night-time thunderstorm. ... // Definition An Insulator is a material or object which resists the flow of electric charge. ...

A variety of companies manufacture boPET and other polyester films under different trade names. Most of these companies are members of AMPEF (the Association of Manufacturers of Polyester Film): AMPEF website. This article does not cite its references or sources. ... McDonalds, represented by the Golden Arches, is one of the worlds most famous brands In marketing, a brand is the symbolic embodiment of all the information connected with a company, product or service. ...

History and manufacture

Biaxially oriented PET film was developed in the mid-1950s, originally by DuPont and ICI. In 1960 and 1964 NASA launched the Echo satellites, 100-foot diameter (30-meter dia.) balloons of metallized 0.005 inch (0.13 mm) thick boPET film. // Events and No. ... This article is about the DuPont company. ... ICI can refer to: Imperial Chemical Industries PLC. The ICI programming language. ... NASA logo Listen to this article · (info) This audio file was created from an article revision dated 2005-09-01, and does not reflect subsequent edits to the article. ... Test inflation of an Echo satellite in a blimp hangar at Weeksville, North Carolina. ...

In manufacture, a film of molten PET is cast on a roll and subsequently stretched orthogonally to the direction of travel. One side is normally microscopically smooth, while the other side contains microscopic asperities which promote adhesion of coatings and printing media. Polyethylene terephthalate (aka. ... In mathematics, orthogonal is synonymous with perpendicular when used as a simple adjective that is not part of any longer phrase with a standard definition. ... Coat can refer to any one of the following: The fur coat of a mammal. ... The folder of newspaper web offset printing press Printing is a process for production of texts and images, typically with ink on paper using a printing press. ...

Biaxially oriented PET film can be aluminized by sputtering a thin film of metal onto it. The result is much less permeable to gasses (important in food packaging) and reflects up to 99% of light, including much of the infrared spectrum. Like aluminium foil, aluminized boPET has a shiny reflective side and a dull side. General Name, Symbol, Number aluminium, Al, 13 Chemical series poor metals Group, Period, Block 13, 3, p Appearance silvery Atomic mass 26. ... Sputtering is a physical process whereby atoms in a solid target material are ejected into the gas phase due to bombardment of the material by energetic ions. ... Thin-film optics is the branch of optics which deals with very thin structured layers of different materials. ... Modified atmosphere is a common technical definition that describes the practice of modifying the composition of the internal atmosphere of a package (commonly food packages, but this technique is also used for drugs) in order to improve the shelf life. ... Image of a small dog taken in mid-infrared (thermal) light (false color) Infrared (IR) radiation is electromagnetic radiation of a wavelength longer than that of visible light, but shorter than that of microwave radiation. ... Aluminium foil (Aluminum foil in North American English) is aluminium prepared in thin sheets (on the order of 0. ...

Metallized nylon (or "foil") balloons used for floral arrangements and parties are often mistakenly called "Mylar", one of the trade names for boPET film. Nylon represents a family of synthetic polymers, a thermoplastic material, invented in 1935 by Wallace Carothers at DuPont. ... Balloons, like greeting cards or flowers, are given for special occasions. ...

Uses for boPET film

Uses for boPET polyester films include, but are not limited to:

• Covering over paper
  • A clear overlay on a map, on which notations, additional data, or copied data, can be drawn without damaging the map
  • Metallized boPET is used as a mirror-like decorative surface on some book covers, T-shirts, and other flexible cloths.
  • Protective covering over buttons/pins/badges
  • The glossy top layer of a Polaroid SX-70 photographic print
  • As a backing for very fine sandpaper
  • Biaxially oriented PET film is used in bagging comic books, in order to best protect them during storage from environmental conditions (moisture, hot and cold) that would otherwise cause paper to slowly deteriorate over time. This material is used for archival quality storage of documents by the Library of Congress

• Insulating material
  • An electrical insulating material
  • As base material for audio or video magnetic recording tapes
  • Insulation for houses and tents in cold environments, covering the inner walls with the metallized surface facing inward, thus reflecting heat back into the space
  • Insulation for houses and tents in hot environments, covering the outer walls with the metallized surface facing outward, thus reflecting heat away from the space
  • Five layers of Mylar in NASA's spacesuits make them radiation resistant and keep astronauts warm.
  • Metallized boPET film "emergency blankets" conserve a shock victim's body heat.
  • As a thin strip to form an airtight seal between the control surfaces and adjacent structure of aircraft, especially sailplanes

• Solar and marine applications
  • Solar sails as an alternative means of propulsion for spacecraft such as Cosmos 1
  • Metallized boPET solar curtains reflect sunlight and heat away from windows.
  • Aluminized, as an inexpensive solar eclipse viewer, although care must be taken, because invisible fissures can form in the metal film, reducing its effectiveness.
  • High performance sails for sailboats

• Electronic / acoustic applications
  • Very thin boPET film is often used as the diaphragm material in electrostatic loudspeakers.
  • Biaxially oriented PET film has been used in the production of drumheads since 1958 due to its durability and acoustical properties when stretched over the bearing edge of the drum. They are made in single- and double-ply versions, with each ply being between 2 mils and 10 mils (0.05 – 0.25 mm) in thickness, with a clear or opaque surface, originally used by the company REMO.
  • Metallized boPET film, along with other plastic films, is used as a dielectric in foil capacitors.
  • For materials in kites

MAP can refer to: Austronesian languages (ISO 639 alpha-3, map) Maghreb Arab Press, the News agency Malawi Against Polio Manifold absolute pressure, an important sensor in automobiles maximum a posteriori estimator, an estimator in statistics Missouri Assessment Program Mobile Application Part, an SS7-based protocol used in GSM networks... Data is the plural of datum. ... A badge is a device, patch, or accoutrement which is presented or displayed to annote some feat of service, a special accomplishment, as a symbol of authority (ex: police), or as a simple means of identification. ... Polaroid (a trademark of the Polaroid Corporation) is the name of a type of synthetic plastic sheet which is used to polarise light. ... SX-70 with electronic flash attachment The SX-70 is a Land Camera produced by the Polaroid Corporation in the 1970s. ... sheets of sandpaper Sandpaper is a form of paper where an abrasive material has been fixed to its surface; it is part of the coated abrasives family of abrasive products. ... // Definition An Insulator is a material or object which resists the flow of electric charge. ... Magnetic tape is a non-volatile storage medium consisting of a magnetic coating on a thin plastic strip. ... Insulation must not be confused with insolation (the latter word has an o where the former has a u). Insulation is any material used to reduce or “slow down” or “resist” the flow of energy. ... Insulation must not be confused with insolation (the latter word has an o where the former has a u). Insulation is any material used to reduce or “slow down” or “resist” the flow of energy. ... NASA logo Listen to this article · (info) This audio file was created from an article revision dated 2005-09-01, and does not reflect subsequent edits to the article. ... Apollo 15 space suit A spacesuit is a complex system of garments, equipment, and environmental systems designed to keep a person alive and comfortable in the harsh environment of outer space. ... Radiation has a variety of different meanings. ... In medicine, shock (hypoperfusion) is a life-threatening medical emergency characterized by inability of the circulatory system to supply enough oxygen to meet tissue requirements. ... Gliders are un-powered heavier-than-air aircraft. ... Concept image of a solar sail spacecraft in the process of unfurling sails. ... A remote camera captures a close-up view of a Space Shuttle Main Engine during a test firing at the John C. Stennis Space Center in Hancock County, Mississippi Spacecraft propulsion is used to change the velocity of spacecraft and artificial satellites, or in short, to provide delta-v. ... An Ariane 5 launch vehicle lifts off with the Rosetta space probe on March 2, 2004. ... An artists rendering of Cosmos 1 orbiting the Earth. ... The Sun (occasionally referred to as Sol) is the star at the centre of our solar system. ... Photo taken during the French 1999 eclipse A solar eclipse occurs when the Moon passes in front of the Sun and obscures it totally or partially. ... A sail is any type of surface intended to generate thrust by being placed in a wind —in essence a vertically-oriented wing. ... A sailboat is a relatively small wind-driven vessel used primarily for sports and personal purposes. ... Schematic showing an electrostatic speakers construction and its connections. ... A drumhead is a membrane stretched over one or both of the open ends of a drum. ... Mil can refer to a number of different things. ... Remo may refer to: a Panoan language of Brazil and Peru: Remo language a Goan (India) singer: Remo Fernandes A U.S. drum skin company : Remo a Goan (India) Programmer: Remo Noronha Category: ... A dielectric, or electrical insulator, is a substance that is highly resistant to the flow of electric current and has a relative permittivity greater than unity. ... A capacitor is a device that stores energy in the electric field created between a pair of conductors on which equal but opposite electric charges have been placed. ... Yokaichi Giant Kite Festival held on the fourth Sunday every May in Higashiomi, Shiga, Japan. ...

External links

• Plastics: Background Information for Teachers. by The American Plastics Council (HTML format) or (PDF format) - 1.9MB), which includes the "chasing arrow" recycling symbols (PET is #1) and a description of plastics.

Links to all manufacturers of boPET films are available at the AMPEF website