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polyethylene terephthalate

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polyethylene terephthalate

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Also known as poly(ethylene terephthalate), PET, PETE, poly(oxyethyleneoxyterephthaloyl), polyester, Dacron, Terylene, Mylar

type of polyester commonly used for bottles and clothing

Wikidata facts

Subclass of
thermoplastic
Has part
hydrogen
Image
Polyester Shirt, close-up.jpg
Said to be same as
Dacron
Has use
PET bottle
Show 10 more facts
different from
polyester
Commons category
Polyethylene terephthalate
recycling code
1
density
1.38
tensile modulus of elasticity
2800.3100
melting point
260
boiling point
350
short name
PETE
CXSMILES
[*]CCOC(=O)c1cc(ccc1)C(=O)O[*] |Sg:n:1,2,3,4,5,6,7,8,9,10,11,12,13,14::ht|
polymer of
ethylene glycol
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Encyclopedic overview

Polyethylene terephthalate (or poly(ethylene terephthalate), PET, PETE, or the obsolete PETP or PET-P) is the most common thermoplastic polymer resin of the polyester family and is used in fibres for clothing, containers for liquids and foods, and thermoformed parts for manufacturing, and in combination with glass fibre for engineering resins.

In 2025, annual global production of PET was 31 million tons with 2031 projections showing over 40 million tons. 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. PET used in non-fiber applications (i.e. for packaging) makes up about 6% of world polymer production by mass. Including the >60% fraction of polyethylene terephthalate produced for use as polyester fibers, PET is the fourth-most-produced polymer after polyethylene (PE), polypropylene (PP), and polyvinyl chloride (PVC).

Excerpted from Wikipedia’s “polyethylene terephthalate” article, available under the CC BY-SA 4.0 licence.

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