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Category Archives: PET

The price of making a plastic bottle

on November 17, 2014

Nov 15th 2014 | By The Economist

Plastic bottles are ubiquitous but the cost of producing them varies dramatically around the world, thanks mainly to differences in raw-material costs and energy prices. The main type of plastic used, polyethylene terephthalate (PET), is made from naphtha, an oil derivative, which can be partly substituted with ethane, a natural-gas derivative. Very little ethane is traded internationally, so only places where natural gas is cheap and abundant use it to make PET. Because of its shale-gas boom, these now include America as well as the Middle East. Europe and Asia rely only on expensive naphtha. In these places the higher cost of fuel and electricity also push up production costs for plastic bottles.

Original Article by The Economist

Varieties of PET Flakes: Hot, Cold, and Unwashed

on January 30, 2014

High-density polyethylene (HDPE) is a polyethylene thermoplastic made from petroleum. This is usually used in the production of plastic bottles. PET bottles go through treatment process and PET Flakes are produced as a result. The treatment process includes crushing, washing, separating and drying. PET Flakes are used as an alternative raw material to polyester. The raw material is used in producing a range of products.

PET has several advantages such as (a) non-toxic (b) low water absorption (c) organic solvents (d) weather resistance (e) resistance to weak acids (f) anti-chemical stability (g) little affected by temperature etc.
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